Miniature RUNNING V-Twin - 45 vs 90 degree V-twins - ENGINEDIY mini ENGINE unboxing, review, startup

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When it comes to the packaging of the engine everything looks good and the engine is protected really well. The only thing that might be at risk from rough handling are the exhaust tubes which are placed into the bubble wrap next to the box
The engine itself is well protected and comes inside this neat little unbranded black box.
When it comes to the exterior appearance of the engine I have to say that everything looks absolutely perfect and well made. The machining is without fault and I really can't find anything obvious to complain about when it comes to the fit and finish of this little thing.
Inside the box we can also find some o-rings of un-known purpose. Some electrical connectors.....and this shaft which is used for starting the engine. Inside is also our CDI box which provides the ignition for the engine.
At the back of the box lid you can find the instructions. Unfortunately the instructions are almost useless and don't explain any of the basics so you have to figure out pretty much everything yourself.
Once the engine was mounted it was time to provide a source of electrical energy for the ignition. I did this with a set of 6 double A batteries which I connected to the little connector that comes in the kt.
Once the ignition is verified to work the last thing we need to do is to provide fuel. The instructions actually call for zippo fuel mixed together with 2 stroke oil at a ratio of 25:1.
The fuel connection is at the bottom of the carburetor unfortunately the position and orientation of the fitting makes it very difficult to install a hose and I think an L-shaped fitting or something else would have been a much better idea here.
I got the engine started within 15 minutes from taking it out of the box so I have to say that it's extremely impressive how easily it started. It required virtually zero troubleshooting. Overall the feel, sound and vibrations coming form the engine are extremely impressive. It sounds incredibly similar to an actual motorcylce engine and hearing in person is a really special sensation. So I have to say that they nailed that part and this is without a doubt a truly impressive gift for someone into engines or motorcycles, especially harleys or cruiser bikes in general
PROS
Exceptional looks fit and finish
Amazing sound
Very easy to start
CONS
poor instructions
attention to detail (no thread in some of the mounting holes, weird fuel connection location, wrong bolt/ thread depth for the ground location)
Now let's talk about the angle of our v-twin engine.
As you can see our miniature engine is clearly trying to mimic the harley davidson panhead engine, and like almost all harley davidson engines since 1909 it has a 45 degree angle between the two cylinders.
So which angle between the cylinders is best? 45, 90, 60? or something in between? In reality there is no such thing as the best or perfect angle for a v-twin engine, we only have different compromises for different applications.
For example a 90 degre v-twin like those we see in Ducati motorcycles make it possible to achieve perect primary balance with the use of a crankshaft counterweight. A crankshaft counterweight can't balance out the mass of the piston in a single cylinder engine. When the piston is at top dead center the crankshaft counterweight can indeed balance it out. But when the engine rotates to 90 degrees the piston and the counterweight point in different directions and thus can't balance each other out.
But in a 90 degree v twin the crankshaft counterweight can balance out both pistons. When piston of cylinder 1 is at tdc it's balanced out by the crankshaft counterweight. When the engine roates 90 degrees the crankshaft counterweight can now balance out the other piston and connecting rod assembly. The result is dramatically reduced vibrations and a smooth running engine.
Now if we observe the 45 degree v-twin engine we can see that the crankshaft counterweight can not fully balance out the mass of the pistons like it can in the 90 degree-v twin. Due to the more narrow angle the counterweight can only partially balance out the masses of the pistons and the conrods leading to an imperfect primary balance.
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#d4a #vtwin #miniengine

[@d4a]

Buy here: bit.ly/3hiNU3F​ Get 10% Off Coupon Code: enginediy Check out www.enginediy.com for more

[@ozzymandius666]

A beautiful piece of engineering.

[@adrijalakshmi844]

Thankuu❤️❤️❤️

[@protofreak9518]

Love how it doesn’t matter how small they are they sound like the bigger versions

[@eTiMaGo]

Now you need a large MR2 RC model and put this into it :D

[@d4a]

Don't give me ideas, I'm broke enough already with the turbo build 😂

[@mikaelkanerva1591]

A 4 cylinder mini engine in a mini mr2. See the channel JohnnyQ90, he's built (at least) one

[@hunterl7588]

Neat little engine One thing to note about the 90° engine on Ducati’s They’re usually stress members of the frame. Meaning the engine itself is part of the frame. They don’t use box frames Frames on Ducati’s are quite small, and their wheel base is also quite short

[@onecookieboy]

Also, the front cylinder is lying down almost horizontal making the rear cylinder almost vertical which saves a lot of space.

[@Trendyflute]

I came because I was researching differences between engine angles so planned to skip ahead to that part of the video but I was so into the setup, your talking, the pace, etc. that I ended up just watching and enjoying the whole video 💖

[@dukiemoto8676]

Your descriptions are clear and concise. Great tutorial👍 thank you

[@HawaiiTree]

Wow a Harley engine that doesn’t leak oil, amazing!

[@nadahog1569]

that because it was a 2 stroke model. so its burning it.... which is basically a harley......

[@hoodagooboy5981]

​@@nadahog1569 It's called a "total loss" lubrication system. The motor has 4 strokes.

[@electric7487]

This comment will not age well.

[@paulg3336]

A tiny cute little miniature boat anchor. Now all you need is a tiny cute little miniature boat

[@Drunken_Hamster]

My favorites for the perfect compromises between sound, packaging, intake priority, and balance are 75 and 60 degrees, in that order.

[@unclejohn5012]

Awesome video man!

[@enginediy]

Wow,excellent video!

[@zaifi1000]

Excellent! Looking forward to more V2 videos. Don't forget about the 72 degree Buell V2 engine.

[@jandincheatwood4108]

Man it’s awesome to see somebody else that knows about the water cooled Buell engines

[@zaifi1000]

@@jandincheatwood4108 I do know about them. Don't own one but have two other Buells. Super fun bikes.

[@andrewrolfe932]

Wasn't that a Rotax with some of the external castings reshaped?

[@fightfanian]

What models have it, I'd like to hear it.

[@ralphpezda6523]

Both plugs fire at the same time: one during a power stroke and the other during an exhaust stroke. It has a circuit breaker, not a distributor. It did not start immediately because there is no choke. You could use a finger as a choke. The portion of the video which attempted to show the engine "set" in the motorcycle frame has the engine/frame 180° off to the correct fit. You could likely tighten the exhaust by using two O rings per pipe.

[@Will-sc3hw]

sounds beautiful

[@josevi5835]

Another awesome video. By the way, the small V twin sounds incredible, a toy for adults 😜

[@robertrobinson3861]

Wow! It even has scale Harley vibration built in!

[@kyotosal]

Something I never knew. Thank you so much for this enlightening video......Sal : )

[@Szamuz]

Love your videos and still waiting for V-twin balance detailed one.

[@philly2x]

This is pretty cool!

[@roadking99jokerst60]

Shakes like my Road King. Fun!

[@RustyInventions-wz6ir]

Just found your channel and Subscribed. Nice engine

[@cetGT3]

Watch out for that phase sensor, ive watched in another channel the same engine, the phase sensor comes loose in the gear housing and comes into contact with the gearing thus getting chewed up and stops functioning and no signal back to the CDI.

[@timnb0340]

this is awesome!

[@virgile387]

Still waiting for that Vtwin engine balance video 🥲 Your videos are awesome, Learn a LOT from it.

[@d4a]

I didn't make that vid because I thought it'd be redundant since I covered v2 balance within the V4 balance vid, it's basically half a V4.

[@virgile387]

@@d4a Appreciate you taking the time to answer ! Will go watch this one right away ! Have a great weekend

[@dbomber69]

That would look awesome on a RC motorcycle!

[@negativeindustrial]

Very cool.

[@FIFIx30]

Hey, I just want to say KZbin did somethin and I didn't see your few latest videos in wall, though I subscribed this channel

[@tomaspalm2909]

i did understand direct that the oring is to use over the tube under and inside the nut before screw it to the cylinder very ease to understand and see that make the tube not to be lose and also act as an sealing. but maybe it is my experience of mc engines and mecaniks make it so easy to me

[@Motocicleiros]

I have a 45 degree engine bike and I love it.

[@AlessandroGenTLe]

What about crankcase oil? Does it come preloaded? Being a 4 stroke it needs something down there to lubricate the crankshaft...

[@TwinTalon01]

I can’t wait for your video going deeper on 90deg/45deg/60deg twins!!! I’m a longtime Buell guy, grew up on Japanese bikes, but once that 45deg rumble got into my soul, there’s no getting it out. I need to know as much as I can. Please help, as only you can!!!

[@PiDsPagePrototypes]

Looks like it could do with a couple of Tuned exhust pipes :D Any details of if it'll run on more traditional model aircraft/car/boat fuels, such as a Methanol-Nitromethane mix?

[@jozsefizsak]

Fascinating. :)

[@caseystyer2996]

Is that a bench engine, or can it actually power something? I know some miniature engines can't handle a load.

[@benhowe2087]

How is the valve train oiled?

[@Prajitrtz1]

Hi , Im looking forward for a comparison between v60,v90,v45 and v180 . Have an Aprilia Rsv which is v60 with balance shaft 😁

[@julianapereira9299]

Suggestion: Can you explain how a 65 degree v12 (like v12 ferraris, t.50, valkyrie) works?

[@peetsnort]

That's so fing cute

[@ronerie]

Please clarify this for me. This engine takes no crankcase oil, but rather is lubricated like a 2 stroke engine by the oil in the fuel mixture ? Or was crankcase oil added before starting ? Thanks, and enjoyed your video immensely !!!

[@peterparlock5450]

So when I just can't get enough of the obnoxiousness of a Harley...I can have one on my desk!

[@nomasker1360]

Put some copper washers under the exhaust nut to tighten up the pipes

[@egg9469]

this engine looks like it would be put in a remote controlled harley or indian.

[@ImnotgoingSideways]

The exhaust nuts are bottoming out before tubes are pinched. Adding washers are actually making things worse. I'd try beefing up the exhaust flanges with solder to see if that tightens things. That, or, find a washer/spacer to fit around/under the flange itself.

[@dbomber69]

Try using a tubing flaring kit. Seems like they weren't flared to specs. Or the wrong diameter tubing.

[@ahobimo732]

I wonder if those o-rings were intended to go between the exhaust pipe and the engine (inside the nut)?

[@d4a]

Yes! I messed that up

[@scottspencer8358]

I wish they would but the counterweight ( flywheel) inside the cases.

[@1one3_Racing]

Please tell me you're going to make a tiny little chopper for this engine!

[@ouroesa]

Exceptional fit and finish yet the fit is poor (exhausts, grounding wire) and the finish lacks polish (fuel connection, poor instructions). Does look and sound pretty sweet through, would love to have one of these and build my own exhaust system. Thanks for this video!

[@bondisteve3617]

Great!

[@GaetanoCrisci]

you should have mounted on a RC American style car!

[@caty863]

I like this cute little engine. I suddenly feel an urge to get this baby. Where can I place my order???

[@markwitkowski6418]

nice

[@assortedexorcist2645]

Why need to block the carb intake while starting?

[@dbomber69]

Have to vacuum prime the fuel pump.

[@s71402san]

Like a little Harley. Install this onto power wheels or pedal cars together with the torque converter and a gearbox. Grab a kid, put a helmet on him and give him a ride.

[@mry82]

What about the 60 degree v-twin? What's the firing interval? Enjoyed the video, as always!

[@joshm4229]

My 60 degree v-twin is 300-420 (Aprilia Tuono with Rotax V990)

[@mry82]

@@joshm4229 Thanks!

[@progaragechinskiemotorki]

600 dolców za taki silniczek to sporo :D

[@hugostiglitz9501]

Zwłaszcza że jest w stanie dalekim od perfekcji

[@kka10001]

What is the weight of this engine

[@EvilRubberBiscuit]

Good video (as usual) but why didn’t you explain the the 60 degree engine at the end like the 90 and 45? Would have been nice for us Indian and VROD fans

[@ralphpezda6523]

Probably because it shows a panhead.

[@scotkillough2240]

Cut the o ring ond put it on the header flare and tightnen the nut

[@chewdoobautomotivedetailtm2883]

That s so cool. Ty for sharing I enjoyed that.. there's Merlin 16 valve miniatures insane art pieces.🏁❤️🏁❤️🏁💣🏁💣❤️🏁🏪🏁❤️🔥

[@jimmysparks315]

What lubricates the crank & bigends ?

[@nadahog1569]

2 stroke

[@jimmysparks315]

@@nadahog1569 Vapor in the gasses in the crankcase ?

[@nadahog1569]

close. but no. its a 2 stroke version of a panhead. meaning you mix oil with gasoline. it lubes all the essential parts then gets burned up. as per design

[@jimmysparks315]

@@nadahog1569 2 stroke doesn't have valves... not sure what '2 stroke version' means but anyway, I get it

[@jrobpat0154]

My guess is that it uses small sealed roller bearings like skateboard bearings for the big ends and mains because it is not meant to run under load, the cam and valve train are apparently lubricated by grease and the premixed fuel only lubricates the cylinders, not sure about the small ends

[@TheMissing62]

You owe us a n explantion of the 52º and 76º pin offset of the honda engines.

[@lorenzodicosmo2708]

I have a question: are these “exposition engines” powerful enought to power an rc car?

[@otm646]

Look up JohnnyQ90 he's built a few with the 4 cylinder versions. Really talented guy.

[@adrianio1000]

The perfect angle for a v-twin is 90° change my mind.

[@yasons9531]

price

[@Manuqtix.Manuqtix]

Where are you?

[@paulg3336]

The firing interval of a 90° V is actually a pro when applied to a motorcycle - it enhances tyre grip. btw you have the orientation of the Ducati engine wrong - observe the word "Ducati" on the case and the sump casting. It needs to be rotated 30° to the left.

[@d4a]

Yes because the orientation of the word Ducati is more important than showing the two angles next to each other.

[@louisvaldivia9260]

@@d4a I think he meant that by looking at the Ducati logo stamped on the case covers, one can see that the orientation of the engine isn't true. I'll be honest it did throw me off seeing the bottom cylinder more vertical then where it usually is on the panigale

[@cmonguys2227]

@@louisvaldivia9260 the point of the video isnt to well represent the mounted engines, but to show comparison between angles. As d4a said, it would not have been a good comparison of both engines next to eachother

[@heydonray]

Sounds great, but what a shame that the exhaust fittings are crap.

[@crspcritter]

Perfection in 1903 👍👍👍 Damn them short stroke engines are boring-

[@Happy357mag]

That's a neat little engine but for $600 I think I would buy a real one.

[@SoylentGamer]

Uh, I think Harleys actually have a 45° firing interval, which is why they sound so rough.

[@ItsJusGeral]

🔥

[@fred-san]

...too cool when will be broken in, macarun P18 + oil

[@andrechagas4549]

At 8:46 you said that 90° V twins, like Ducati's can dramatically reduce vibration... Have you ever ridden a Ducati? 😂 😂 😂

[@d4a]

Have you ever ridden a shovelhead? Or maybe a 360 degree twin? You don't even need to ride it. Just look at the front wheel while it's idling.

[@andrechagas4549]

@@d4a I'm totally noob when it comes to motors. The little I know, I have learned from your videos. But I have owned a Yamaha MT03 (naked version of the R3) and it's an inline 2 (is it the same as the 360° V you mentioned?). It was very smooth, actually. Now I own a Ducati 796 and they are famous for shaking a lot below 4k rpm, but works very smooth above that. Have no clue why that happens. Just thought it funny this configuration (90°) would cause it to shake less...

[@AlessandroGenTLe]

@@andrechagas4549 That's not a thing of engine balance, that's due to the fact that without variable phase (like in all car engines), in order to produce power at high rpm the cams are phased to privilege the high rpm and therefore the engine runs a bit rough under certain RPM.

[@ImnotgoingSideways]

@@andrechagas4549 MT03 is a 360v but has a balance shaft to smooth it out. Get your hands on an original Triumph or Norton and hold on to your teeth.

[@Paul-770]

what’s different between Germany 🇩🇪 cars engine and Japan 🇯🇵 cars?

[@sakibsarwat5064]

i don’t know after how long i’ve watched a diy application or any application where someone’s using basic aa cells😬

[@nepzski]

why does ur channel home page say mr2mk1hero

[@d4a]

That was my original channel name when I first started it ages ago 😁

[@Mohapi_Tau]

Took you only 15min to put together? I would have taken an hour or so after unboxing & I consider myself mechanically inclined.

[@smartassist9700]

I am looking for a small motor for bicycle. (Not motors that currently are available.) I want to try a new reach motor. If I canbe sponsored and receive one, I will build a SUPER SAFE MOTOR BYCYCLE (3 WHEEL) FOR ELDERLY TO RUN SMALL ERRANDS!

[@jerzyczajaszwajcer]

What was the price?

[@roscomcfarland204]

That’s awesome. Just goes to show how simple and old and over priced Harley Davidsons are. It’d be even more impressive if it wasn’t the worst bike engine ever put onto a motorcycle

[@christiantroy7722]

To bad it's not a bit bigger it would look great on a weed trimmer

[@mikeymike758]

Are these "Chonda" engines?

[@d4a]

No, it's Barley Davidson

[@mikeymike758]

@@d4a Lol.... Cheers,

[@mzaite]

@@d4a If I ever brew a bland American Light pale Lager, I'm totally naming it Barley Davidson.

[@jasonburguess]

Now mount it into a modified bicycle and see how fast it will go

[@smartassist9700]

I AM NEW SUBSCRIBER! PLEASE ANSWER MY OTHER QUESTION. ALSO I HAVE BIG TUBE THREE WHEEL TRICYCLE TO MOUNT ENGINE ABOVE REAR AXEL. AGAIN ELDERLY PROJECT. (I GIVE TO NEEDY).

[@muaythai193]

to me a 45 degree Harley v-twin sounds more uneven (better, for my taste) than a 90 degree v-twin or 270 degree parallel twin.

[@bigcheese781]

Not true Harley inspired unless exhaust vibrates loose.

[@kyleblemzey5990]

I’m hoping this website is legit have been scammed in past just ordered

[@smashface3080]

First

[@cipher2508]

[@trentdawg2832]

awesome sounds like hog

[@riccardobarlocco6618]

For 600 € i think it's overpriced

[@chaoz_2k185]

Idea of these small engines is stupid. You can buy more than two real motorcycle or car engines for that price. If you want something small just get bicycle engine kit for $100. For $500 I would expect perfected small engine kit that looks amazing, comes on a stand and doesnt have these stupid flaws. Love your channel btw, but pluging these stupid small engines lost you some social credit XD

[@procactus9109]

The thing about bikes is, they shouldn't be allowed on public roads.