E1 - Moped on Methanol/Nitromethane, The Journey Begins. - Booze Cruise

[@Jack-tx2ve]

I used to run a 50cc two stroke on petrol but it had a second small carb for nitromethane which only opened on full throttle. It worked.

[@2STROKESTUFFING]

+Jet S Cool!

[@nathanhamers9160]

was the petrol one closed at full throttle? or were they both fully open?

[@freeman626]

that’s literal boost lol

[@jediknight1294]

@Chris Jackson there are ways and means of doing stuff similar to methanol injection. Fucking c9ol though.

[@tyladube801]

You gotta lmk how I can make a set up like that

[@BLThackrey]

we used nitromethanol mixed with 2 stroke at a 50/50 ratio on our racing scooters back in 1999 . we ended up winning the championship with 1st and 3rd . good luck

[@2STROKESTUFFING]

+B.L Thackrey Cool!

[@christophercastor6666]

“... and There’s piston all over the plug. I think this means a teardown.” Infinite patience!!!! The zen master mechanic!

[@biko9824]

Chill Scandinavian spirit

[@Headerflame]

If I remember correctly, you’ll need close to 5 to 7 times the amount of nitro versus gasoline. Of course the methanol is like 2.5 times gasoline. So, It depends on what ratio is being mixed and also what the corrected altitude and weather stats of the moment are, but I’ll take a wild stab in the dark and say shooting for 4 times the fuel versus gas setup.

[@larrythomas3624]

When I was probably about 12 years old, many, many moons ago, I had a Honda PA-50 moped. I put a piece of window screen in place of the stock air filter, cut took the muffler off, and eventually discovered model airplane fuel and unscientifically just tipped the bottle and poured some into the gas tank, mixing it with the conventional gas. It made a HUGE difference. Stock, going downhill it would top out like it had a governor, but with mods it would just keep revving. It was faster on flat ground and uphills too. I had two friends with mopeds that all ran the same until the mods. After the mods, one day we all hit the road (illegally) to go to 7-11 and I made thru a game of pinball and about half a slurpie before they got there! I never pulled a plug or touched the carb. Never hurt anything. I kept the secret from them through about a week of their badgering me and finally told them. One guy had success, the other melted a float in his carb. (Different brand moped, probably plastic vs brass if I had to guess) or he went crazy with the amount. Good times!!

[@tylerangieslayton7455]

Love watching your old videos I learn so much in every episode

[@danwoodrow1855]

you are the best on tube. loads of great videos. no messing about. cut well. no time waisted and to the point. awesome. keep it up.. currently doing my third dt125lc build and keeping this one so dont mind forcing the boundaries.. took note of your porting tech and other tips.. going to see what we get.. thanks fella. dan.

[@satt131313]

I’m like the other commentators. I was mixing up all kinds of fuels from nitro to Av gas and trying to port and polish the riding mower and changing all the drive pulleys. My dad would get so angry with me messing with every motor I could find from the chainsaw to the lawnmower. Man you cooked that plug and piston.

[@cheaprubbergarage6015]

Hey mate great video But you need to add castor oil to the methanol or you won't get enough lubricant on the bearings, these fuels are designed for glow ignition engines and have different fuel to oil ratio. Keep up the great videos and I suggest you try methanol again ! Also you will need a carb that is meant for alcohol or methanol I think they have different materials in the seals Also I'm no expert just a big rc and 2 stroke nut And yes I've burnt up a 2 stroke with rc fuel before, my bike was going about 60 mph then I blew the rod bearings Ahh and the smell of nitro is so amazing always reminds me of the drag strip and top fuel cars

[@hopsgarage5513]

hopefully a small set back, great job keep it up. can't wait to see the numbers

[@2STROKESTUFFING]

+Ben Hop Thanks!

[@warrenfloyd1484]

Also decreasing the back pressure on the tip of the exhaust helps at the high rpm range

[@OldSkoolF]

We did this back in the late 70's early 80's... Always had idle and flow problems... Solved it by putting 12hp carb on a 5hp engine! also a super strong return spring. I love the smell.

[@henrypowell4240]

That's a cool ass bike. Like the set up. Nitro bike never heard of it until now.

[@2STROKESTUFFING]

+Henry Powell Thanks!

[@stoffes]

Is it just look like front forks bent?

[@2STROKESTUFFING]

They're straight, wide angle lens distortion.

[@neilpetersen5287]

We did the nitro fuel in a go-ped ONCE! It was spectacular. The trick was getting the block hot enough. Afterwards it cooled into one piece. But, it was awesome while it lasted

[@2STROKESTUFFING]

+neil petersen haha, awesome!

[@rajgill7576]

I have done with before, you need to throw a lot more fuel at the engine to avoid this kind of damage. It will run hotter and faster, so the extra lubricity of the fuel helps, but most importantly the volume of fuel helps keep things cool

[@2STROKESTUFFING]

+Navraj Gill You are right about needing more fuel!

[@2STROKESTUFFING]

+Navraj Gill Check out my other videos with the bike on nitromethanol! Had a few successful dyno sessions before the intake disc drive nut put an end to it. Gained almost 2 wheel hp over gasoline so far, and that's with no other modification to the engine but carb adjustment. Currently doing a rebuild and some port work.

[@rajgill7576]

Ayy, will do. Cool vids man just discovered you today

[@2STROKESTUFFING]

+Navraj Gill Great, thanks!

[@jamestrainor8121]

I'm not sure if you know this now but when we covert out 4 stroke flathead racing engines from pump gas to straight methanol we have to increase the main jet almost 150% from stock

[@jamestrainor8121]

also we have to advance the timing even more for maximum fuel burn

[@AuMechanic]

If you are running an engine on the dyno and not sure if its lean, use a small bottle of propane and give it a small toot of gas in the carb while running to see if revs up, if revs go up its too lean.

[@2STROKESTUFFING]

+I Make and Fix Stuff Great tip, thanks!

[@AuMechanic]

It's a quick way to do a rich test on the fly for many uses. Like a no start you can give it a chooch in the carb of gas and see if it runs for a second or not to tell if its not starting from lack of fuel or too much and has spark or not. Also quick test to see which way you need to turn mixture screws at any point before making adjustments at idle, or if main jet is right for wide open but not sure about mid range you can give it a shot at part throttle on the dyno to see if it likes more or less at mid range before you adjust the needles and or slide cutaways which are time consuming to do each adjustment on. And a quick way to find intake leaks like manifolds and crank seals at idle. I have a long 13mm heater hose on my bottle to sit on the floor and a length of 6 mm vac hose off the end to use like a wand to direct the gas in places.

[@MrLethal1986]

Safety glasses bro. a piece of metal in the eye is no fun, and if it's not a alloy there is a very high chance the optometrist is going to be using a very simular tool to sand rust off your eye ball. if it gets behind your eye your rubber ducked, they will have to pop your eye out the socket then sand it while your awake. I was lucky and only had to have a needle in my eye to flick out the piece of zamac from under my cornea which had started to grow over it after only 24hrs. This might sound like bullish but if you don't believe me search eye rust removal. Peace out cool content just be safe.

[@2STROKESTUFFING]

+MrLethal1986 Thanks! I'll be more careful!

[@stevevanmeel5647]

Thanks for doing and sharing your experience, blowing up stuff in the name of R&D is how we learn. Good work bud thanks keep it up.

[@CAoffRoading]

Kinda crazy what a lean fuel mix will do to an engine. Had the fun of rebuilding a 70L Cat V12 after it was run with a failing fuel pump causing several pistons to get melted clean through breaking pieces off and destroying both heads in the process. 30 hours later it was good as new.

[@2STROKESTUFFING]

+Richard Adrian yes, totally crazy how fast it melted that plug!

[@CAoffRoading]

2STROKE STUFFING I do wish you the best of luck getting that puppy going again. That's one badass bike. Really love the creativity your putting into it.

[@2STROKESTUFFING]

+Richard Adrian Thanks, means a lot!

[@dougbawden4321]

I believe that a rule of thumb when going from gas to methanol, you double the jet sizes plus some.. I'm no expert tho

[@2STROKESTUFFING]

+Doug Bawden With methanol and 20% nitro I'm at over 4x the area of my gas jets now. You can see tank level drop during a dyno pull...

[@jenpsakiscousin4589]

Just get ya a keihin pwk from sudco or a used KX85 carb which is a 28mm PwK. They make jets with a very wide range, I've used a KX80 motor for a superKart and kept the stock PWK carb. Ran on alchy to.

[@guidosamson682]

I could hear the mess coming. Whennu go to extreem fuels u need to change the head compression and bowl and work on ignition timing.

[@mojje1999]

Very interesting! Just hope it does not become too expensive to repair the engine! So we'll see a little more HP in the end! Good luck ! I'm anyway happy that you test o shows honest results and then it becomes a little scrap on the journey!

[@2STROKESTUFFING]

+Morgan Nilsson Thanks! Breaking stuff is half the fun isn't it!

[@groomlake51]

Also nitro will only burn at its full potential when the engine has a load on it. When idling you need a over rich mixture to quench the heat and keep the piston cool. But when applying a load the engine will want fuel at a exponential rate via the loading condition . Also some say nitro burns slower but I was taught is harder to light. So you need to take in to consideration of the working speed of the expansion of the combustion process, and maybe regear the bike to a taller gear slowing the piston down and giving the nitro time to expand and creat the cylinder pressure needed for the higher power out put. Remember making power at a higher rpm is via angular momentum not big cylinder pressures . If your trying to gain performance by using nitro or alcohol or both you need to change the set up so that the engine works in its optimal dynamic RPM range. Your using nitro to creat big cylinder pressures this will result in a higher horse power number at a lower RPM. Most nitro engines I work on and engineer make peak power at 6,200-6,800rpm. What I’m trying to say is that motor was turning way too much rpm to take advantage of the fuel your using . But be ware !!!! Making power at a lower rpm it what hurts parts and stress them to the max. Making power at a higher rpm is often easer on most engine parts. If the valve train ,wrist pin, and con rod fasteners are up to it.

[@2STROKESTUFFING]

+Groom Lake Thanks! I'll experiment more as soon as the engine is back together again.

[@t.w.3]

I have a 50cc watercooled pocketbike that runs on 100% Methanol. 18:1 compression. Top RPM is just under 20k. Will try to post video of it. I haven't dared to put nitro methane in it yet. I buy the pure methanol at Caravan dealers that have it for the Eføy fuel cells. Cheap and very clean compared to some of the RC stuff.

[@2STROKESTUFFING]

+Thor Warenskjold Cool! What pocketbike? My cylinder is from an iame m50. You've got to post that video, and thanks for the tip on methanol!

[@nlo114]

Don't forget that every 1% oil that you add to the fuel-mixture = less combustible fuel in the fuel/air-mixture, so makes it weaker. Extra oil may lube the engine better, but it makes the engine more prone to pre-ignition. (I've melted a few pistons finding this out).

[@2STROKESTUFFING]

+nlo114 Thanks for the tip! Pure methanol and (especially) nitromethane is pretty restricted here in Norway, otherwise I would mix my own fuel with lower oil content.

[@roberthoard639]

Yes , to much oil makes for lean run, oil displaces fuel.

[@jackass123455]

also you should consider switching to a reactive metal ignition source or GLOW plug removing the electric system from the coil completly

[@2STROKESTUFFING]

+kyle hubner Would be a fun experiment!

[@chadman2275]

Rc runs on glow at high compression gas engines are made to combust some degree before tdc it's not designed for the fuel so that being it won't run on it

[@2STROKESTUFFING]

+Chad Nordstrom It It actually runs very good on it!

[@shanekersey9272]

thats a awesome bike. with lots of power to me awesome job.

[@2STROKESTUFFING]

+shane kersey Thanks!

[@davidnunkt4751]

Hey we did the same mods on a pwk in 2008. If you use e85 first you will get some experiences. Those are usefull for the next level on nitro ;) Also the premix for rc engines have often more oil than needed. (up to 25%). That reduces your power again. By the way nice videos.

[@2STROKESTUFFING]

+David Nunkt Thanks!

[@zephyrold2478]

Hi The best way to lapp the valve seat is to make a alu or hard wood plug with yhe right angle and use diamond lapping compound, cheap on Ebay. I got a set like yours and it is to course in my opinion.

[@2STROKESTUFFING]

+Zephyr Old Thanks for the tip!

[@zephyrold2478]

The diamond grains gets imbedded in the alu or wood, so dont throu the plug out after use it can be used again, sets of small syringes with different grain sizes are rather cheap.

[@shoominati23]

PWKs are good cheap carbs for the money, I've only ever used the genuine ones though, so i don't know how good the taiwanese ones are. I have liked Dellorto VHSTs on my bigger engines, I find they have a crisp throttle response. I currently have a PHBG 21mm on my 70cc Aerox, my only 2 stroke currently in my arsenal..

[@jt-wy8qc]

I been told when u do this its best to use a big carb to get 2 times the fuel I did this with big chainsaws but I was still using some gas but it still made more power then with just gas I don't like to use it it make a lot of rush . running more oil and more Nitromethane helped cooling but i cant find a fix to stop the rushing use to make homemade glow fuel if you have a foaming problem of the fuel use 2 drops of armorall original to 1 gal

[@raymondj8768]

its 3 times bro its gotta be 3 times fatter then gasoline

[@2STROKESTUFFING]

+Raymond J Actually I had to go past 4x gasoline.

[@raymondj8768]

dam really when we change over drag racing cars they are about 3 to 3.5 times more on methanol so i guess thats about rite then lol i run super comp dragsters with 1100 HP it runs 830s in the 1/4 mile fun stuff bro

[@2STROKESTUFFING]

+Raymond J Sounds cool!

[@Lord_Verminaard]

Need MOAR FUEL! :) Hopefully it isn't wrecked too much!

[@2STROKESTUFFING]

+Brendan Doyle Crossing fingers!

[@CannondaleF700]

This was an expensive experienced learnt. New top end just ect I'm subscribing 😀

[@2STROKESTUFFING]

+fishsticks yep. Thanks!

[@dunezilla2268]

These things happen when you're innovating. Def lean on top - maybe even mid. Sucks you burned a hole in the piston. What changes did you make with the needle and its position? I'd imagine you'll need a richer needle from pwk to begin with. Or better yet, make your own! Also, why not put an air filter on it? Will def help with the lean issues. Are you jetting for no air filter just for max HP on the dyno? Anyway, i hope you stay with it - love the engineering. I'm Interested to see how this project turns out.

[@2STROKESTUFFING]

+Josh P Thanks! I'll have to pull the top end, but I actually think the piston might have survived. Crossing fingers! Needle is in thr middle, next try I'll set it full rich and start with a ridiculous main jet, just to be safe(r). Could need a different needle altogether, we'll see next time!

[@jianoconnor8414]

I notice on your table NGK BR10 EG plug box. That's a resister plug. As a Powerdynamo happy customer; I/we don't use resister plugs at all. I humbly suggest that resister is not necessary nor desireable in your application. There is literally a resister inside the center core of the plug. Perhaps your ignition can take it; but I suggest that it's not conducive with outright absolute power. Which after-all ; isn't that what you/we are about ?. Anyway I bet the Dutch guys aren't using resister plugs. Bet my bottom Kroner !! :)

[@curtisthomas7915]

cr250 on methanol 38m keihin carby .7m pilot, 290 main jet, drill the needle jet 2.95, stock needle diameter(2.90) but turn down the taper , compression 15.1and i don't touch nothing else hope this can help you

[@christopherknee5756]

Did you get carburetor icing? Where I raced, Durban SA, it was humid.

[@piecrustslob7004]

I’ve always wanted to do this with dirt bike when I was a kid but was way to scared of catching fire

[@dighsx]

You took that shockingly well. I figured we'd get at least on swear word outta ya. You'll get it figured out. I have no doubt. Keep hammering on it, Jay

[@2STROKESTUFFING]

+Jay Dighsx Might be different when I pull the cylinder...

[@dighsx]

You should make it your life mission to teach us to swear in Norwegian

[@2STROKESTUFFING]

+Jay Dighsx That's a plan!

[@MrOddsen]

I can help :)

[@jediknight1294]

@@2STROKESTUFFING how are we doing on this plan now we have the engine running and idling and pretty close to the ring sorted?

[@shaegrover9516]

I have a seriously odd two stroke problem. My 1976 suzuki ts250 will sometimes idle and sometimes will rev to full max rpm. Obviously I'm playing with the fuel air mixture screw. The cylinder and head gaskets are new. It will start fist kick. My hunch is that it is too lean or I have an or leak somewhere. Sound good? What's a good rule for the fuel or screw mixture setting? The exhaust system has a huge leak until tomorrow could the improper "ping" be throwing off the fuel? Sucking air back in through the gap?

[@2STROKESTUFFING]

+shae grover That exhaust leak might cause this, report back when you've fixed it.

[@DeliciousDeBlair]

So it maybe burned the plug and piston? Need titanium piston and platinum plug?

[@warrenfloyd1484]

Oh another tip, if you leave a twist in the main jet when.you drill it it increases atomization 😎

[@jamienichols6277]

I think it could be a compression ratio issue? I used to race r/c 1/8 scale and any time you up the nitro ratio it;s recommended to add a shim to the head.

[@brianbarnes7007]

Wotta maniac project!! Totally barking MAD. Keep on with it mate.

[@2STROKESTUFFING]

+Brian Barnes haha, thanks!

[@saisokuhashiriya8069]

A little advice.. avoid OKO/SPR/UmaRacing carburetors.. they are ridiculously unstable on AFR.. spend a bit more for Keihin or Mikuni carb..

[@2STROKESTUFFING]

+Saisoku Hashiriya Don't know about the others but I've had good experience with Oko.

[@bricelarie6527]

I be glad you find the way the proper "plug" thought it was called sparkle but ... With two stroke running with high compression ratio, which mean small combustion chambers the place, sense, and qualities the sparkle plug appears to be a kind a limit ... I do think that due to dynamics the fluids in the chambers the sparkle should not be directed from up to down but laterally ... But finding spark plugs to re-built using a water cooled engine must be more difficult than for the air cooled ones, but don't change the manufacturer products "offers" ... And it's not only some two strokes concerned matter but obviously a kindan "industrial" way of thinking limit ... No oil any to avoid frictions in the spirits used ?

[@2STROKESTUFFING]

+Brice Larie Actually having the spark plug bang in the middle is ideal - equal distance from bore, squishband, chamber edge etc. Shortest possible distance for the flame front to travel in any direction - higher resistance to detonation. No worries, I'm running 15% oil(not by choice, the RC fuel is premixed).

[@bricelarie6527]

2STROKE STUFFING I do not, By choice or ways to think, Mine is closer to the intake the fresh gases than the exhaust ... It's a temp matter, and the up the piston is work leading the exploding gases from intake to exhaust in creating like a "water" drop on it up ... There's no way you start on classic fuels then once in temp slowly change the mix the engine use ? However nice configuration ... A bit a work done, even if it not always runs as "asked" ...

[@TheSteelweasel]

i use a chop stick shaped to polish the needle seat

[@fdfx3]

Is there a reason for why you are not using a wideband oxygen sensor? I mean in my mind this coul have been easily avoided by doing so, not to mention it would have made it so much easier for you to tune it/dial it in. Anyways nice work.

[@2STROKESTUFFING]

+fdfx3 Thanks! No, not really. A bit pricey to get one, and the probes usually don't last too long in two stroke pipes. Would be a great tuning tool!

[@wimvandesompel]

Why do you not start the engine with an elctric drill? I think it would be much easier! Good luck with the further tuning. greets Wim

[@2STROKESTUFFING]

+wimvandesompel Sounds tempting! Thanks!

[@wimvandesompel]

2STROKE STUFFING I did it a lot and it works super easy. Drill directly on the flywheel/crank with a 13mm socket it was on my honda camino pa50

[@2STROKESTUFFING]

+wimvandesompel I've done it too, but on the Spx I have to do it anti clockwise on the variator side, and I'm worried I'll undo the nut.

[@gabbermaikel]

my brother drove his moped for about a year with a drill in the luggage compartment to get it started. He was to lazy to fix the kick starter and the electric starter on the moped.

[@smokepeddler]

Nitro runs in it's own environment. Good luck.

[@grabir01]

Should have gone with a mix of pump gas and Nitro and work from there. Or does it not mix with pump gas?

[@2STROKESTUFFING]

+grabir01 Won't mix...

[@lancelawson4552]

we need more guys out there like you

[@charlieward7606]

what is up with a lot of the engine moving under throttle? btw i think you are going to need like a 250cc carb, the fuel already has oxygen in it so you are going to need a HUGE amount of fuel, good luck looks awesome, im from portugal and 50cc tunning is really big here, ive moved on to cars but still love this stuff, but never seen a bike on nitro, just ethanol

[@2STROKESTUFFING]

+Charlie Ward Thanks! It's how this transmission setup works, called "single variated". As the belt moves up the variator the engine is pulled towards the fixed rear pulley. It's a cool setup cause I have some manual control over gearing with a foot lever, the downside is 0.5x range vs typical scooter CVT's. Going from 24 to 30mm after porting.

[@turbotyoma]

Awesome guy! Like staff like that!

[@2STROKESTUFFING]

Thanks!

[@amiruladlin5522]

by using higher ethanol fuel for example(E97) ..does it run better for 2stroke bike..

[@2STROKESTUFFING]

+Amirul Adlin There is potential for more power, but you'll have to do some modification. Mainly you need to up the compression and make a shorter expansion chamber.

[@amiruladlin5522]

+2STROKE STUFFING Some says.by running a higher ethanol fuel,will increase chances of 2stroke bike seize so easily..cuz it burn unefficiently.. Does it true?

[@2STROKESTUFFING]

+Amirul Adlin Not true. As long as you keep on the rich side alcohol fuels are "safer" than gasoline. Runs cooler and higher detonation resistance. Don't go lean, you'll melt plugs(or even pistons) in seconds.

[@jvsyoutube3298]

this channel is right up my alley at the time! very greatful for finding this, will for shure follow! keep up the good work and spirits ;) hello from schweeeeden hehe! (ratbiking my yamaha dt at this time)

[@2STROKESTUFFING]

+jimmy vahviala Great that you like it, thanks! Good luck with the dt rat, building a rat is alot of fun!

[@shoominati23]

Why does the engine move back on forth when you rev it? Is that an Aprilia RS 50 / 125 Frame? Whats the carby bellmouth (mm) ? I'll send you a high end air filter

[@2STROKESTUFFING]

+shoominati23 Single variated, the moving engine is how this transmission works. There's no variable rear pulley like on scooters, the engine is spring loaded and moves as the belt works its way up the variator sheaves. If you're talking about the frame in the background it's a derbi senda. Carb bellmouth is 70mm, I appreciate the offer but I never run filters on race stuff - it always cost power, no matter how much you rejet.

[@Nick-dz4ml]

hey! if i'm correct they still sell the pistons used in the kreidlers, maybe you should get one of those?

[@2STROKESTUFFING]

+Nick Great tip! I'm actually running a Barikit PE65, ment for Kreidler Van Veen, and will get a replacement if this one's toast.

[@michaelkhobbs3815]

And now I know why the rabbit hole was tripped on LOL 🏍️🚀✌️👌🤘🖖💓

[@boosthit811]

nitromethane, methanol mix at 20% nitro needs around 3 or 4 parts air to one part fuel!!! Also nitro requires a lower compression ratio. At that ratio probably about 10 or 12:1

[@SB-fe4gt]

Why only 20% Nitromethan...it would be interesting to see the difference between 20% and 30%. Great videos...Thank You.

[@marcusmcclelland]

i really like your videos mate

[@2STROKESTUFFING]

+marcus mcc Thanks!

[@premix3663]

When I was a kid I ran my 1997 cr80 on nitro fuel for a few days then it blew up lol

[@allenheilig3737]

just wanted to know if you had any extra oil to that stuff cuz it don't work for me I wrecked the Rings cousin lack of oil sorry about the other text it does

[@2STROKESTUFFING]

+Allen Heilig Nope, just the 15% of ester based that's in it already.

[@ganon420]

Allen Heilig add some klotz kl100 to bring the oil up to at least 20%. and methanol like a AF ratio of 2:1, so keep that in mind when you try this again. I think you may be better of with gasoline with methanol injection on the top end.

[@fenainvespa]

Ciao anche io ho fatto un po' di prove sulla mia vespa elaborata con miscele di etanolo e anche di metanolo...a parte rapporto di compressione altissimi e tempi di accensione molto ampi io ho trovato grossi problemi di carburazione anche con carburatori molto grandi (32mm).ho poi capito che oltre un certo limite alzare il numero del getto nn migliorava...anzi a un certo punto ho dovuto ridurre il passaggio di aria ( come nel video quando chiudi l'aspirazione con la mano). Un altra cosa che forse sai già, il Metanolo è molto pericoloso se respirato perché come residuo di combustione produce FORMALDEIDE CHE PORTA ANCHE ALLA CECITÀ. Quindi quando carburi ti consiglio di indossare maschera e soprattutto occhiali o schermo.......molto meglio provare miscele di benzine ossigenate tipo Avio o Pantah omologata dalle federazioni motociclistiche....qua però devi abbassare drasticamente il rapporto di compressione altrimenti i pistoni ti dicono Ciao Ciao...Comunque stai facendo ottimi lavori seguo con interesse i tuoi video da un po' e devo dire che ci sai proprio fare... Saluti Diego ITALY

[@Chris-yy7qc]

How much horse power? Whole bike looks dangerous, but the engine itself looks tiny??

[@2STROKESTUFFING]

+Chris It's a tiny engine, 50cc. Best so far is 17.4 wheel hp with belt slip. There's uncertainty around transmission loss of the variator, but judging by how warm it gets(the belt even started smoking on the 17.4 pull) it's pretty inefficient. I estimate crank power to be around 22-24hp.

[@willw941]

not that this has anything to do with your lean vs rich situation have you thought of trying any other carbs or fuel injection in the quest to beat RvRT? The Yoshimura mjn conversions seems pretty interesting. Great work and congrats on having a kid!

[@2STROKESTUFFING]

+William Warnock Thanks! I like the PWK, mostly because I'm familiar with it, but I've been thinking of getting something else.

[@chrismiller701]

My man you need to jet it up 30% for nitromethane it needs 30% increase in fuel to run on nitromethane

[@jianoconnor8414]

"Light blue touch paper and stand well back ! "

[@MrSnowman2110]

so cool i was just thinking the other day after watching some 2 stroke videos if rc fuel would work then i find this

[@2STROKESTUFFING]

+Jeff C Thanks!

[@DerKrawallkeks]

Amazing video! Just being a smartass, don't mind me;) I think nitro-methane air/fuel ratio is around an insane 2:1, and methanol around 7:1! I think you're absolutely right about running lean. A gasoline carb needs not just some tuning.. It has to provide more than 3 times the fuel!;) I'm gonna watch your other parts now. Really really nice bike and video! Cool to see someone do this with the right knowledge. A little question: why is the engine moving? and what about those springs

[@2STROKESTUFFING]

+DerKrawallkeks Thanks! Yep, you're right about that. It's been running good with over 4x gasoline jetting. Abot the moving engine, it's how this transmission setup works, called "single variated". As the belt moves up the variator the engine is pulled towards the fixed rear pulley. It's a cool setup cause I have some manual control over gearing with a foot lever, the downside is 0.5x range vs typical scooter CVT's

[@DerKrawallkeks]

Aaah ok, very interesting! I think, (you most likely already know this) that you'll not have another problem with heat as long as you run rich enough, since nitro-methane does some incredible cooling inside the engine. I'm sure you got some of that stuff on your skin and felt that. That's really in your favor when trying to make a small engine powerful.

[@adamadamhoney]

DerKrawallkeks IMHO consider running a kenosine base fuel with the nitro blend. Even in top fuel drag cars they basically diesel after the first second under loss as there is no electrode left. If possible the coldest range motocross bike plug will be the best option

[@DerKrawallkeks]

Paul Bearer what does dieseling have to do here? And what is the advantage of kerosene over methanol (which is the third component in rc fuel)

[@2STROKESTUFFING]

+Paul Bearer I've been running 10 plugs with good results, no going to 10.5, fine wire ground and center electrode.

[@adamadamhoney]

What % nitro overall? Even when it's tuned up plug life will be limitied to power and drags, but I guess its an easy change. Newbie to the Chanel, just subbedz keennto see your work, I miss carby tuning 👍

[@2STROKESTUFFING]

+Paul Bearer 20% Nitro. I'll have to stock up on plugs... Thanks for subscribing!

[@potjnkye86]

I run RC vehicles with 30% nitro 70% methanol and it's amazing what a 3.3 cc motor can do. Even a 3.0. 2.2 HP

[@jediknight1294]

Rc engines are insane fr9m a hp/tonne pov, shame scaling them up is so hard.

[@potjnkye86]

@@jediknight1294 they pretty much have been. top fuel and funny car dragsters run off pretty much the same fuel just a higher nitromethane content and 4 stroke not 2 and lastly use spark plugs for ignition not glow plugs and compression.

[@jediknight1294]

@@potjnkye86 so 4 stroke and spark not glow plug isn't a scaled up rc engine then. Not throwing shade just pointing that out the fact they run similar fuel at a different ratio isn't particularly relevant here to my point.

[@potjnkye86]

@@jediknight1294 I get what you're saying but you were talking about the horsepower to pound ratio and just trying to say the fuel used in Nitros is used in other engines and they get ridiculous power

[@HighMileageOffroad]

You should do more with the motorized bike engines! Like porting and pipe type and design as it's a very popular and growing subject right now and we need your skills and knowledge!

[@burtjohnson7298]

what timing are you running with the nitro, you will have to educate me on the flame propagation pump fuel v nitro?

[@2STROKESTUFFING]

+Burt Johnson Same as with gasoline atm. I'm not sure how flame propagation compares to gasoline, I'll play around with timing on the dyno later.

[@colta51]

2STROKE STUFFING methanol generally burns slower so needs more advance but not sure when nitro is added to the mix.. i ran the 250 today and it took ages to warm up and clear out but when it did it pulled hard in any gear. :)

[@2STROKESTUFFING]

+Sean Fiba I'm not sure about the nitro, it certainly adds some heat, maybe speed too. That might be the trick for safe running - tuning it so that it takes ages to warm up and clear out!

[@jons6125]

Am I mad to want to nitro fuel fog inject my 2stroke outboards airbox? Is there an issue with lubrication or corrosion? Would I even see any benefit at wot 6000rpm I’m thinking the oxygen chemically in the nitro fuel would mean more power and cooler running.

[@skrillexss71]

Is it possible if you have a full tank of original fuel and add some rc fuel methanol will it make different? Of course i will have oil just curious

[@shanekersey9272]

i heard oko carbs are hard to dial in.

[@2STROKESTUFFING]

+shane kersey No worse then the others in my opinion.

[@bps.1]

Is their other fuel advatives that would stop dentnation

[@bitsurfer0101]

How could you tell if you're running too lean? by EGT? My brother had a nitromethane snowmobile racer and used to start it with some WD-40 since it's cheap fuel.

[@2STROKESTUFFING]

With methanol/nitro it's simple - the plug melts in seconds.

[@rickburnout666]

holey piston Batman, We did this crazy stuff about 28 years ago with a Honda Amigo (Proper moped)

[@nickgill8759]

hope youve pulled a lot of timing out of it! You're basically running semi diesel.

[@grapsorz]

Hey. where in Norway r you located? i'm in Vestby Follo.

[@2STROKESTUFFING]

+grapsorz Halden.

[@grapsorz]

ahh 40 minuts ;) nice to se a Norwegian getting a mechanical channel up an running :) wish i was making more videos myself :)

[@jianoconnor8414]

I suggest a good cartridge/s respirator :)

[@groomlake51]

To burn nitro you will need close to 600% more fuel than gas. But where your really lacking is you need close to 60 degrees of ignition timing aka lead with 90% ch2no3 with straight meth you will need 225% more fuel than gas @ about 28 degrees lead

[@2STROKESTUFFING]

+Groom Lake I was going to start playing with ignition timing last dyno session, but then a piece from the intake disc drive nut thrashed the piston... I'll be back!

[@groomlake51]

2STROKE STUFFING also it’s going to want 11.5 to 13:1 compression . I would keep a small carb on it and modified it to flow more fuel. When we are burning nitro in funny cars and dragster we will almost burn it one to one with Air . Your going to have to keep restricting the air to keep power out put from blowing it up

[@2STROKESTUFFING]

+Groom Lake Thanks for the advice!

[@jimmysmyth7510]

did you forget to add premix?

[@07scoobywrx]

I ran rc fuel in a Yamaha blaster I had back in the day thing ran like a monster for about 20 mins then seized up lol

[@2STROKESTUFFING]

+14ev0x Sounds like nitro allright...

[@S0daB]

But how do you oil the engine if the fuel doesn't have any oil in it? :/

[@2STROKESTUFFING]

The RC fuel has plenty oil, 15% in fact!

[@S0daB]

2STROKE STUFFING oh okay I didn't know that. :D Thx

[@seanthomas2906]

You are amazing mate I know that will kick ass great idea shame you can't use Hydrazine 😎

[@seanthomas2906]

Getting a 2 stroke and joining your game thanks for the inspiration. Outstanding

[@2STROKESTUFFING]

+sean thomas Thanks! Yeah, Hydrazine would've scared it up! Comes with pretty nasty side effects tho...

[@roystonfence816]

Can you use Denso iridium plugs or is this a glow plug set up?

[@bps.1]

the r/c fuel works it runs on it but im thinking that the r/c needs to be mixed with gas just reg gas , and then mix two stroke oil with the gas ,but how much r/c fuel do you add to the gas is the question i mix pre mix to 32.1 and i have high comp and with reg gas it predentnates ,if i use av gas its fine but that too much , so i would like to know what or how would i mix the r/c with the pre mix

[@2STROKESTUFFING]

+SHANE DICOCHEA Mixing RC fuel with gasoline is problematic, it separates without a mixing agent. Acetone works to an extent. Why not convert to methanol mix in some nitro?

[@roberthoard639]

No, cause nitro will not blend into gasoline

[@fergusonhr]

you earned my subscription because you are AWESOME

[@2STROKESTUFFING]

+Gary Ferguson Jr Thanks!

[@colonialroofingofnorthcaro441]

What made you feel it was running to lean, thanks for the vids

[@jediknight1294]

Eating pistons is kind of a clue

[@fakesfraudsfools9649]

By looking at the spark or the color of the exhaust

[@Realryancurry]

What kind of 2 stroke oil are you running?

[@2STROKESTUFFING]

+Ryan Curry I usually run Castrol A747 in everything, but the RC fuel comes with it's own synthetic variety.

[@roberthoard639]

@@2STROKESTUFFING sabre oil 100 to 1 will make the most hp, more room for fuel

[@roberthoard639]

For gasoline

[@rudolfsjozuus987]

What you found inside engine? Piston and cilinder not broken?

[@2STROKESTUFFING]

+Rudolfs Jozuus Just a melted plug and a few markings in the squishband. Got lucky!

[@Metaljunkie77]

Could those modifications on the carb for Rc fuel be applied for e85? If not what should be done to a two stroke with e85?

[@2STROKESTUFFING]

Yep, and you'll probably get away with just a larger float seat and jets, or even just the jets, depending on which carb.

[@iron5998]

Do you need to add 2stroke oil still?

[@2STROKESTUFFING]

Nope, it's premixed.

[@bittasweetsymphony726]

2 questions: Do you think its ok to put a bit of rc fuel in the 2 stroke petrol? just for fun. and why does my 2 stroke idle bad? it revs up and then will die if idle adjusted, its like a air leak but ive changed the intake gasket.