v-twin 2 stroke?

motorpsycho
if it was easy it would not be as much fun.
as far as making it work shaft drive motorcycle just make the parts a little smaller
look up BOSSHOG cycles
brigs does make a horz. vtwin motor but its like 25 horsepower
would be hard to get a cop to believe its a assist motor of less than 2 horsepower lol
 
The Acme wasn't a v-twin, it was two single-cylinder engines connected by a common gearwheel. A v-twin would be a two-piston engine with both connecting rods sharing the same crank pin. .....Not that I blame Acme, building a true v-twin would have been way more work, using parts from a supplier that could alter their specs or halt production at any time.... But the only reason they took it as far as they did was that it was a fairly cheap and simple way to achieve something that looked kinda-sorta like a twin engine.

If I was even dreaming of producing such a thing to sell, there would be no way I'd base it on 2-strokes. They're already banned in many countries, and soon will be in many others. Like it or not, oil-burning two-strokes are a dying market.

Four-stroke engines don't combine as easily since each has its own valve train already.


If you want a v-twin there are some lawn tractor engines, but most cost $1000+ and are at least 18-20 HP. They weigh 80-100+ lbs, but would last darn near forever if you cut the power output by 75% or so.
 
This is exactly why i am thinking about a v-twin 2 stroke....4 strokes are too heavy and way too expensive.
2 strokes have the ability to make way more power than a 4 stroke of the same c.c.'s unless you dump a ton of $$ into a 4 stroke.
I just think it would be really cool to see a 66 c.c. 2 stroke v-twin..more for the looks than the performance. Heck, each cylinder would only be 32.5 or so c.c.'s and the pistons would be tiny....which would reduce the size of the jugs, making it easier for one to fit into a bike frame.
I'm just thinking out loud, not like i'm going to try and design one...but it sure would be cool.
 
Back in the late 50 's - 60's E.J. Potter [ The Michigan Madman ] built a
Flathead 6 powered bike for Bonneville duty. It had two controls, a throttle, and an on / off switch. Power was transmitted directly, the bike was jacked up, engine started, jack lowered with rear tire spinning.

I personally saw a Chevy V8 powered Gold Wing, darn thing looked stock.
 
actually e.j. potter did not use a flathead on his bike. He was a dragracer, not a bonneville racer
He used a small block chevy with hilborn fuel injection and the bike was called the widowmaker. The very first version of that bike had a carburator on it but he built another bike with the fuel injection.
The bike had an "in and out" box, meaning it was either in gear or out of gear like a sprint car. The bike was started on the kickstand, revved up and then dropped off the kickstand to get it moving. The 10 inch slick would smoke for most of the 1/4 mile.
ejpotter.jpg
 
Three years ago, I toyed with a project using TWO HT engines, side by side. Back then, no shift kits were in use.

I believe it's do-able, at not too much expense.:unsure:

how did that work did you go crank to crank one or two carbs fireing on the same stroke or oppasit iv been wanting to do that but didnt know if it wold work i mounted a vacume cleaner impeller on the crank of a 2 stroke and plumed it into carb dont know if it helped or not but if i leaned the bike over to far it would suck up gravel
 
how did that work did you go crank to crank one or two carbs fireing on the same stroke or oppasit iv been wanting to do that but didnt know if it wold work i mounted a vacume cleaner impeller on the crank of a 2 stroke and plumed it into carb dont know if it helped or not but if i leaned the bike over to far it would suck up gravel

This is as far as I got:

After buying two 80cc engine kits, I got two bolt-on Happy Time engine motor mounting plates made for OCCC chopper bikes. Then I bought an 1/8" steel plate. Also acquired was an engine plate for 4-stroke engine.

Having two HT engines side-by-side made for a wide package. Having centrifugal clutches would've simplified engines' operation, but make for an even wider setup. A jackshaft was needed; freewheel sprockets would work to separate each engine's chain action. However, centrifugal clutches and pull starters would then be necessary.

That's where I abandoned the twin-engine project. At that time, shift kits were not offered yet, so a single rear sprocket woud have been necessary.

Looking back in retrospect, the flimsy OCCC engine mounts would not have been sturdy enough for the project.
 
wow, a vacuum cleaner impeller attached to the crank...that had to really suck :)

yae i think it took more power to spin the impeller than it gave me in boost idk it was a plasitc housing mounted to a plasitc pull start houseing with a socket to boilt on magnito i had it on a 49 cc mini chopper i ran it for about 150 miles got sick of it comming apart cause plastic and vibration gave a good kick and broke it off
 
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