Ive heard alot about these and how they cant ramp up ur ride but how do they work? Does the pulley attach to circlulating fan that blow huge amounts of air into the carb? Or is it sumthing else? I heard they can screw up your engine bigtime? If I bought one of these for my evader how would it inpove in preformance?

oi! Dude, not getting mad at you, but there is a search button and www.google.com

Anyway, a supercharger on a car forces(forced induction) more air and fuel into the chamber than can happen normally(naturally aspirated.
Basically, your intake valves are open and exhasut valves are shut, then the supercharger forces air into the cyllinder to create a certain amount of "boost" which is just pressure so that the air and fuel is somewhat compressed before the piston comes down. then the intake valves close and the engine compresses the air/fuel more.

BUT, on most single cyllinder 2 strokes, like an RC engine, there are no valves... The intake and exhaust are open simutaniously. SO a supercharger will push air into the cyllinder faster, but won't create any boost because the air/fuel just gets pushed out the other side...

So, really, on an RC it will give you Higher RPMs, but won't create any more power (torque or HP). Actually it will reduce HP because of the Drag of the supercharger (superchargers are driven off the engine: eg, flywheel, rather than off the exhaust like a turbo) And depending on the tensile strength of the connecting rod, crank shaft, wrist pin etc... You could easily destroy your engine due to higher RPM's.

People have reported slightly higher speeds and better accel with superchargers, but it will make the engine significantly less fuel efficient, so your run times suffer horribly. Also there is the risk of destroying your engine.

couldnt have put it better myself. youre better off just buying a better engine, especially since superchargers only really work on four strokes. ive seen a few custom superchargers for four stroke model airplane engines that worked very well, but thats about it.

they dont

I say buy one so you can prove to your self what every one has been trying to tell you in TWO different posts you have made.

seper chargers will work on a 2 stroke engine but the engine would have to be deseigned and built to run a supercharger with diferant port timing and tuned exhaust and even then it would only realy be effective in a narow rev range

they do not work!

why not

they work in 4 strokes fine, just not 2 stroke, cos u dont have any valves.

goto www.howstuffworks.com and search how does a 2 stroke engine work, and u'll see why.

they do not work.

super chargers work on rotary engines even peripheral port and they dont have valves

Ever seen the guts of a rotary engine? Or maybe seen a picture of how one works? the exhaust and intake are never exposed to eachother. Same deal wtih peripheral port.

Have you ever tried to seper charge a peripheral port.

It would be like trying to fill a tire with air that has a big hole in it[sm=spinnyeyes.gif]

lol

theoreticly, wouldn't a supercharger act like a scavenger on a 2 stroke? I'm not saying it would work the way its supposed to. Your all right, you would get 0psi of boost, but wouldn't there be a SLIGHT benifit to haveing a blower? I don't think it would make up for the extra drag on the engine, and I would hate to see what it does to the temps.

the only thing i can see it doing well is cleaning out the combustion chamber to let a fresh charge in... there wont be any boost but the new charge wont have any spent fuel in it.

Not presonally, but p-port engine is just a rotary engine with a better induction system.

http://www.rotaryeng.net/intake.html

they can be turbo'd and supercharged.

peripheral have both the inlet and exhaust in the rotor housing section so when you super charge them most of the boost goes straight out the exhaust.My mate that used to drag race a 13b peripheral port found one way to overcome this problem that would work fine on a 2 stroke glow motor and that was to fit a supertrap which is basically an exhaust outlet that has plates in it that you can remove or add to increase backpressure so not only is the cylinder pressurized but also the exhaust.A tuned pipe isnt needed because the pressure from the super charger will do that job and that will work

Feel free to comment on this and to those people that say it wont work please say why

So........................ If i was to buy an O.S thumper, in theory the rbinnovations super(junk)chargers might not be so much junk?

In other words, would they work with a nitro 4 stroke ?

they would certainly work with a four stroke... as long as they are well made. in other words, the fan blades are well machined and dont loose a lot of air from around the duct housing and blades themselves. another difficulty would be that the carb is behind the case on a four stroke.... so how exactly would you get the thing spinning in the first place since the crankshaft is on the other side of the motor? the best thing to do is literally custom build one for a four stroke. i once read an article about boosting an OS .91 four stroke, it increased the HP and torque about 20-25%. but thats only because they did a VERY good job at it and built it to very tight tolerances.

Wankel rotaries in principle work more like a 4 stroke-cycle engine. But forget about supercharging a 2 stroke. Enough people previously explained why. If you want more power out of a 2 stroke. Stick on a tuned pipe. That will have a much greater "supercharging" effect. It sets up a standing pressure wave in the pipe when it is in its proper RPM band. What this does is to help suck the exhaust out better and then as the pistion is rising again to close the exhaust port a pulse of exhaust gas gets rammed back in the combustions chamber increasing the compression like a supercharger. You can hear the engine "come on pipe" when it hits that RPM band. The power just comes on. Sometimes it can almost sound like a 2-speed shifting.

What about twin turbos on my 2.5trx?

same thing... all it would do is blow it straight through the engine. except i think it would be a LOT harder to make than a supercharger. you might as well just get a better engine or tuned pipe.

maybe I'll just put a hemi on it.