RC-One : Stage6 R/T FL100 Exhaust Tested : More Power? : RC1 : Part 13

[@pubbiehive]

Detachable stinger is usually so that you can use a stuffer to make the opening into the silencer narrower afaik.

[@49ccscoot]

I think you're the first one to get it in the comments. 190mech on the forum said the insert that goes in before the stinger goes on is a "Fath Nozzle". Helmut Fath came up with the idea (long ago) as a way to adjust pipes while racing without having to cut and weld/braze.

[@pubbiehive]

@@49ccscoot It's some real high level race tuning stuff for sure. Also be very careful if you try it because you can easily ruin your engine doing it.

[@49ccscoot]

@@pubbiehive I melted part of a piston long ago testing a pipe with a small stinger for 50-70cc on a 90-100cc.

[@pubbiehive]

@@49ccscoot oops

[@benvanbaak]

There is a guy here in NL that makes exhaust and test all of them on the rollers so if you want the best result that is the way to go, his company is called DDL Tuning.

[@joski9030]

Love that colour from the welds ! I worked in a scooter shop back in the day them pipes with clear coat look sweet! My boss had a 250 in his Lammy it was fast af for a scoot. Miss them days best job I’ve had.

[@peterjohn3180]

I saw a bike in Thailand on you tube with a black carbon fibre expansion chamber and white coloured connections between sections, titanium expansion chambers are the best looking, and hardest to weld apparently. Brazed expansion chambers look nice, with the golden colour between sections I think.

[@thedownhillerboy]

😲And that's how a new 2-stroke ripper comes to light🛵💤💤💤🏍️🤩👏🏻👍🏻🇵🇹🙋🏻‍♂️.

[@skateritaly1524]

I love your videos. From Italy, Jimbo

[@49ccscoot]

Awesome! Thank you!

[@bb_adrians4672]

The removable stinger is for use with a straight one, for drag racing, for that extra 0.3hp gain

[@kex2160]

great video 8 as always ) and this time you did the EGT hole on the "right" position of the S6 exhaust..think that with this dedication this scooter will go so fast that even Dr.Emmett Lathrop Brown from the back to the future would say...Great Scott!!

[@X7rocks]

Glad to see some great condition ! And awesome pipe swap! I need to go on the forums to post some updates.

[@49ccscoot]

Please do!

[@kornelmag6943]

Im soo happy to see your videos! Today “with” your help I installed airsal 50cc kit on my piaggio sfera ❤ +learned hard way that you can chip nicasil with old steel file… But I saved it with diamond one and did some porting. Not tuned yet, just put bigger jet. Hope it works so it will get me to job tomorrow🎉

[@49ccscoot]

Glad you figured out the diamond file and saved it!

[@pirrracy]

Yo good to see you're still scootin'! I recently bought a 'KRM' 90cc Silencer (French made)... and the quality is like no other can I've seen. Solid, solid build quality and there are are few different color schemes too. More importantly they make them in various 'cc ranges (eg 50-70 or 70-90cc). Nearly wasted my money on a Yasuni!

[@hookaharehipster]

Very interesting to see some other pipes tested. Ive never thought the original exhaust with the rc-one kit was weak. If anything it does have a smaller usable power band than say a c16 on a 70cc but over all it is a very usable pipe even for around town riding. Like you were saying in your last video, this engine isn't by any means practical but surprisingly able to put around town when you want to take it easy. Second the comment about the Zuma being wheelie happy with the rc-one too. Its hard to keep mine on the ground over 1/4 throttle at take off.

[@chrishoareau974]

Amazing video as always !

[@2TLifesTV]

Nice video brother!! pretty clean RC1

[@paulbudford]

Beautiful looking pipe

[@donedeal2057]

Damn that sounds sweet

[@zero_gear]

I want to see more of the setup on that met ruck setup. That’s exactly what I want to get.

[@49ccscoot]

It's an RC-One. 8.1 pipe that he was told was custom for the RC1, but really no details are known by the owner. 34mm PWK and Malossi intake for the bigger carb. Otherwise it's the RC-One setup. It goes, but I think mine could keep up with a lighter rider. I couldn't get him to spend more time testing the pipe to see if it was really doing much for him, but at least I think it is working like the S6 exhaust and making a wider powerband so it would probably see higher speeds and the 34mm may help there.

[@skateritaly1524]

my friend trust me a st(scooter team) pipe it's handcrafted you can decide whether to give more at low revs or at high revs they tailor it to your driving style it is expensive but totally worth it

[@Dariush27]

DDL Tuning makes pipes specifically made for the 94cc Testa Rossa kits but I doubt they are available outside of europe

[@49ccscoot]

I've heard of them, but don't know much about them. At this point, I'd like to have the S6 100cc stuff to match the pipe, but budget has not allowed.

[@Dariush27]

@@49ccscoot Fair enough, it's an expensive hobby. ( but a heck of a lotta fun ) but yeah DDL Tuning is based out of The Netherlands, the owner used to race for Malossi. They used to do dyno tuning, cilinder tuning, crankcase tuning, etc. But they stopped Januari 1st, Fortunatly they are continuing to make their line of exhausts and intakes.

[@raresvintea1]

How the electric water pump is doing after a long period of time? Happy about it? Do you run a thermostat?😊

[@49ccscoot]

I don't run a thermostat. Actually just replaced the pump (with the same pump again), which I'll talk about in a future video. Overall, I'm pleased though. It's mostly trouble free. My charging system makes it a little worse because it will shut down over 15V and I can't get this thing properly regulated so I have to turn more lights on if I'm at high RPM for long. That's not really a complaint about the pump though and prob best that they have that safety built in.

[@kabooski]

Funny that you made this video cause I happened to get the "FL100 drag version" for the Malossi and I am having to re-braze a different header piece to use the Malossi cylinder flange.. Stage6 had the best price and when attempting to contact other pipe manufactures that do have specific 94cc Testa Rossa pipes i.e HK, ST etc they do not respond to those overseas in America.

[@notagunfreak8146]

The nice thing with a removeable stinger is that you can alter it way easier. A smaller stinger can increase power big time. Most stingers are way too big standard because manufactures dont to customers to destroy their setups during initial jetting/ tuning.

[@kabooski]

Why the drag version has long stinger? In fact most drag scooters have very long stingers

[@notagunfreak8146]

@@kabooski A longer stinger can give more power at lower rpm (so off the line power) but stinger diameter is way more important.

[@49ccscoot]

I'm surprised the scooter world doesn't seem to have swappable stingers (like off the shelf parts). My first two-stroke bike was a little "Cateye" pocket bike. Cheap junk basically, though fun. I bought a Sidewinder exhaust for it and it came with three little stingers that could be swapped with a set screw. Same diameters, but length changed. You could definitely feel the powerband shift up or down a bit.

[@notagunfreak8146]

@@49ccscoot Thats nice. Ive changed my stinger diameter from 17 mm to 15mm and got alot more power in the powerband. Small size change can change alot.

[@49ccscoot]

@@notagunfreak8146 I'm probably never going to be the high HP guy, because I actually like the safer larger stingers. For actual street use, I think they make more sense. I've used pipes with stingers too small before and ruined pistons so the idea of a little safety margin is nice when you're trying not to have an engine failure in front of traffic.

[@danielvetro7256]

Im gathering my setup and its main parts is a Polini Big Evo 4. 70cc cylinder and a Stage 6 R/T mk2 70 piaggio pipe and mvt dd so im very curious what power does she have when its done!(my scooter is a aprilia sr 50 '11)

[@Manu-zp2il]

section variations in the exhaust manifold have the effect of creating turbulence and can cause incandescent gas pockets to re-enter as well as decreasing the efficiency of the expansion. Here is a translation from famous Italian book: "Elaborariamo il 2 tempi" - Facchinelli (page 153) "The part that goes from the port to the exhaust manifold coupling is not less important than all the rest. Any sharp jump or exaggerated angle will have the effect of create turbulence in the outgoing exhaust gases, which it produces several negative effects. Slow down the outgoing gases, create pockets of flue gas to come returned to the cylinder by the return of the expansion, hinders the latter operation making it more difficult to return to the cylinder of the mixture, effectively restricts the exit area of the burnt gases penalizing the whole system. This is especially true in the first part of the collector, which goes from the light to the actual collector and where nowadays we find in the middle all those partitioning devices of the I unload."

[@49ccscoot]

Thanks. I'm hoping to re-test with a matched flange and see what changes.

[@Manu-zp2il]

@@49ccscoot I would find it very interesting since I've never had the opportunity to try it

[@49ccscoot]

@@Manu-zp2il I know that technically matching is correct. I've heard people that know 2Ts pretty well say a bit of mismatch isn't that big of a deal... but even if a bit isn't, this is a pretty big mismatch. It'll be interesting to see how much it matters in the real world.

[@chrishoareau974]

Maybe in the future you can make a flange that fit much better and make new test.

[@49ccscoot]

I think I'm gonna try it. No time for ordering or building when I did these tests. Looks like ~$45 in material shipped from McMaster-Carr. If you never see that video, it means I screwed it up and couldn't get the flange right. LOL

[@2taktfriseur]

The name of the company is Spelled Otto Punto Uno wich means Eight point one in italy wich is the Year Jader (owner) is Born.. i visited him back in 2019 in his Facility in Italy.. They really make good stuff! i have an 180 Gilera Runner CNC engine from them and i love it

[@49ccscoot]

Thanks for the info! Makes sense with their custom engines now.

[@49ccscoot]

...And BTW, a CNC 180 from them sounds amazing. Didn't know that existed. I checked your channel to see if you had vids of it in action. Didn't see any... but the black Runner is a mean looking scoot!

[@TheRealREDracing]

Unrelated question: do you know how i can make my scooter brap brap brap on idle? thx

[@49ccscoot]

Set the idle low or have a leak or fueling condition that causes a surge. It's much better to worry about usability than sound though.

[@paulflood4420]

How’s the charging now with no kart pump

[@49ccscoot]

It charges well at high RPM. Doesn't charge much at all at low RPM. The Zuma regulator won't regulate it well enough. I tried Chinese stuff and a Tomos regulator that was recommended to me, but the Zuma is at least as good as any of them. I have a halo light and the actual headlight. In the daytime I'll use the halo if I'm not at high RPM much and then turn the headlight on when the revs are up cruising faster to keep if from going too high. The pump shuts down over 15V so otherwise I'll notice warning lights coming on from heating up with the pump off. Sounds complicated, and it's not ideal, but it doesn't bother me.

[@paulflood4420]

@@49ccscoot will I be ok if my pump runs off my battery and the lights come on when the engine is started to charge battery

[@49ccscoot]

@@paulflood4420 Probably. Ryan has no charging at all. He uses Malossi's pump, which also has a controller that can lower it's demand if temps aren't high. He uses lithium batteries and rides for hours. I know he was using SLA power supply batteries. Not sure if the newer lithium one is also for a power supply. I can find out or he's on the forum. He also has all LED lights and his headlights hardly draw any power.

[@juu6967]

How long should a torque spring last? I had a malossi +1500rpm spring and it only lasted 540km before it started acting like stock

[@49ccscoot]

It should last a lot longer than that. I don't have any specific time or mileage. I've had the spring on my Minarelli OR setup for years without issue. I've had a TaoTao fatigue springs quickly. I think how much heat they're subjected to makes a difference.

[@juu6967]

@@49ccscoot im gonna buy malossi variator and clutch that should stay cooler when riding, my variator is pretty tight so there isnt alot of air cooling things

[@49ccscoot]

@@juu6967 Venting the CVT cover may help.

[@juu6967]

@@49ccscoot it is a kymco super 9 2stroke, the variator is vented from factory but the tube that connects to the cover doesnt draw air from anywhere, just connects to the frame. Did you figure out the taotao problem?

[@49ccscoot]

@@juu6967 I used name brand springs and cut holes in the CVT cover.

[@kornelmag6943]

Stinger is screwed so you can mount accessory straight stinger and get better gas exit 😅

[@kennylain495]

I think this Mach 1 pipe will make more power if you can mount it

[@Bigturboguy]

the Otto brand name means October 1, easier to pronounce. lol

[@Winner3ty]

That S6 flange looked like it was up side down to me, but whatever. This is not a good comparison either.

[@49ccscoot]

The flange is on the right way. Wouldn't make any sense to wrap the springs around the header. Sorry the comparison doesn't work for you. Just seeing what happened with a bolt on. People in the comments seem to know all sorts of stuff, but if I try to look for anyone that's done these things I come up blank and wind up on my own. Unfortunately I've always done my own thing and not followed others, so I'm not great for networking info I guess, unless people share on the forum maybe.

[@Winner3ty]

@@49ccscoot I meant the mounting bracket, it looked upside down to me. (when you mounted the supplied mounting bracket and had to fab up your own) the header really is an uphill battle for comparison since the transitions are non existent. but I understand why you did it as is.

[@49ccscoot]

@@Winner3ty I've got 3/16" plate and 1.5" rod in my cart at McMaster-Carr, so maybe someday we'll see if a port match does the trick. The bracket can only sit one way because of how it's bent.

[@houseofcluck]

less thing that can be damaged in shipping is my assumption

[@finanmathias59]

roost havoc is closer to malossi than the other brands

[@maxjohnson3196]

Gotta use way less amperage and smaller filler

[@49ccscoot]

TBH it had been a bit since I used the TIG and I got lazy and thought lemme just guess at amps. WRONG. LOL

[@preslavnikolov923]

Bro are you sponsored by them

[@49ccscoot]

By ScooterTuning.Ca? I've talked about it multiple times in videos, but they give me a discount on parts in exchange for mentioning them. I've dealt with them for years anyway, and genuinely have had good experiences, so it was a no-brainer. I greatly appreciate their support, but I still put out plenty of my own money, so don't think I'm getting free stuff. If I was getting free stuff I'd have a twin 100 or something.

[@preslavnikolov923]

@49ccscoot bro a discount is great for scooter parts when we know how expensive the brands are now

[@bravo1412]

Jollymoto P90R / P98R Roost be94 the best pipe is allways the pipe how made the most touqe at the lowes rpm . P = M * n / 9550 P = Leistung in kW M = Drehmoment in Nm n = Drehzahl in 1/min

[@chrisapolinar1102]

Really? You can't compare the two pipes when you has a s*** connection at the flange. With that big of a miss match, ofcourse the stage 6 is not gonna make more power. The return pulse of the pipe is getting screwed by that abrupt wall from the getto rigged flange.

[@49ccscoot]

FYI, S6 says to use their flange if using the pipe with other kits. I don't disagree with what you're saying, but if other people would like to take their time and money to try this I'm all for it. I was trying not to modify a good pipe or cylinder expecting that it's never going to be the best option. The Otto pipe that Ryan has allows the Malossi flange to be used so it's easy... but all I had to go on was pics. Don't see anyone else posting much about these things so I tried it and actually shared the info I have. I'll measure the pipe at some point and that will go into a pipe database on the forum as well.

[@uwu3130]

:3

[@TEAMVISKAT81]

St make a pipe for malossi rc94cc i had it on my 94cc Zip sp

[@49ccscoot]

I don't even know who ST is TBH. Someone else mentioned ST and HK, but also said they won't even respond to people from the US.

[@kamilr3511]

@@49ccscoot Full polini engines 94cc 3500 Euro top speed 155 km/h 0-100 km/h 4,5 sec real

[@49ccscoot]

@@kamilr3511 Show me the vids of a 300 pound rider like me doing 0-100 in 4.5. I'll accept 2-up. lol There's certainly faster stuff out there, but I just rode this thing 175 miles round trip on a whim and earned a subscriber because I passed him on the highway. I can't say I see many high end riders out doing multi-hour trips. Heck, I don't usually get to see scooters at all around me these days unless they're stock 4T rentals at the beach.

[@TEAMVISKAT81]

@@49ccscoot the st exhaust is only slightly better than the one from malossi, plus it's as noisy as hell. yazuni has their c40 which is for 90 to 100cc. but personally I would use the exhaust that fits best. for the malossi rc94cc your scooter probably makes 25-27hp on the rear wheel.. 30hp is really rear

[@ConnorWayne-j8g]

ottopuntouno. otto - eight, punto - point, uno - one. Eightpointone... Wouldn't it just be easier for everyone to all it 8.1..... haha Loving the vids!!