Alt. 4-Stroke Engines (frame mount)

[5-7HEAVEN]

My deepest apologies, Alaska and Oscully. in my haste and lack of time, i miscalculated.

the engine sprocket-to-rear sprocket might be 3:1, or 8-tooth-24-tooth, for total gear ratio of 15:1.

similar to happy time engine and 36-tooth rear sprocket.

again, i'm sorry for the error.

Augi, i've got a flat on my DAHON with STATON chain drive. it's been sitting for a month. and you're correct that if it was friction drive, i'd have probably fixed it the next day. real busy with work and school. i'm sure it'll get fixed, once i decide to take a wrench to it.

 

[JemmaUK]

http://www.rcplanet.com/ProductDetails.asp?ProductCode=OSM36310&Show=TechSpecs

Anyone for a 4 cylinder 4 stroke inline?

shame about the price but it'd certainly give a 80cc a run for its money

Jemma xx

 

[5-7HEAVEN]

totally impractical. 50cc total r/c airplane engine. plus cost of retrofit from propeller to engine sprocket. main bearings unfit for heavy load.

how about twin 80cc engines for less than $400?

 

[JemmaUK]

totally impractical. 50cc total r/c airplane engine. plus cost of retrofit from propeller to engine sprocket. main bearings unfit for heavy load.

how about twin 80cc engines for less than $400?

I wonder if it is that unsuitable. after all aero engine bearings are designed for 65% running for alot of the time, whereas road engines vary from nothing to 95% and back and so on. Its a 4 cylinder so its smoother and as to replacing the prop its a matter of unscrewing prop fitting and either putting in a clutch or welding/bolting etc a drive sprocket/ belt sheave to it.

The only issue I could personally see is that it may need to use nitromethane or whatever it is (which from what I have read is done merely to provide an oxygenising agent) and the fact of the 4 line crank of the engine which negates cross fitting and could be sorted by a 1:1 diff providing a 90 degree drive which would be inline with the required chain line or belt line of to the back wheel (a lengthened frame would be required) - effectively you would have a four stroke 50/4 that would need a fuel/oil mix at 20:1...

maybe a special bike like the twin whizzers - a one off thing

just my thoughts on it...

Jemma xx

 

[5-7HEAVEN]

Actually, the only issue to 99.9% of the members here would be its $4399.99 retail price.

 

[RATRODER]

how about one of these? www.jerry-howell.com/v-twin.html

 

[hotsauce492003]

Considering the size of this engine: http://www.karting1.co.uk/wankel-kart-test.htm
there is about 50hp on something about the same size of that chinese clone of the gx50 honda engine.
Now we are talking about alternative 4 strokes...and it might require some other modifications so your bike&u survive the power and speed. Can you imagine the accelration of this thing mounted on a bicycle? And the cost is similar to the RC engine.

 

[5-7HEAVEN]

very impressive, even though that engine is 2.5 times heavier than the HONDA GX50. even at 37.4lbs, it should fit into a VERY well fortified bicycle frame.

let's see now. titanium frame, motorcycle-size tires, NuVinci 3-speed hub, 9g spokes or solid rim, dual disc brakes, front and rear...

and a full roll cage to envelop the brave rider.

Myron

 

[Large Filipino]

http://www.rcplanet.com/ProductDetails.asp?ProductCode=OSM36310&Show=TechSpecs

Anyone for a 4 cylinder 4 stroke inline?

I'll take a cute little blown v8 thank you.

http://www.youtube.com/watch?v=i3VVI6Auvys

 

[JemmaUK]

I'll take a cute little blown v8 thank you.

http://www.youtube.com/watch?v=i3VVI6Auvys

lol ... I saw that too and the advantage is that its a dry sump system so it can be mounted effectively in a lot of different positions..

Just imagine the sound of that thing

now I just need welding skills, $5000 and to suddenly become totally mental lol

Jemma xx