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Old 07-05-2009, 05:42 PM   #46
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Originally Posted by Alan D. View Post

Thats awesome man!

For the record I appreciate that we could all share our thoughts and opinions with out getting into a giant 5 page fight about "your mommy this your daddy that" like some threads become.

Supercharging a tiny 2 stroke would be awesome just to say "it's blown."
I bet a supercharged r/c would haul in a drag race hmmmmm

I think I should start a new class of racing in my neighborhood
yeah same here theres a vid of a guy on youtube i cant post url's yet but type in supercharged rc car and this guy has a dragster that is and he's REALLY late off the lin and he still smokes the guy lol
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Old 07-05-2009, 05:47 PM   #47
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That guy in the you tube link isn't very bright. I've seen them work in a Savage kepted breaking the rear center driveshafts. It was very fast mid-up but extremely hard to control and drive. He was only beating us the straight a way the rest of the track we was running him over.

Is it really worth having no just hard on parts plus harder to get it to the ground to hook up. Does it do you any good in the end NO
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Old 07-05-2009, 05:49 PM   #48
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Centrifugal superchargers for r/c use seem to be way more hassle than power. Maybe some one could design a purpose built r/c nitro engine with a roots type blower. But even then the majority of r/c engines are 2 stroke, wouldn't all the extra air just blow out the exhaust port...? There no way to compress all the extra are you might be packing in. Waste of power.

If someone could make a 4 stroke off road r/c blower motor, it would have to be super engineered. When and if there is enough boost made to cancel out the power taken away from turning the blower, it is hard to contain. the engine would be heavy, and have some super strong gaskets, push rods, cam....
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Old 07-05-2009, 05:49 PM   #49
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Saved some work for people who want to watch the vid
http://www.youtube.com/watch?v=wcNPO...eature=channel

Rocket car SWEEEEEEEEEEEEEEEET!!!!!
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Old 07-05-2009, 05:52 PM   #50
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I realize this has nothing to do with our motors but here is a little history lesson about a supercharged car from before the invention of fuel injection.

http://en.wikipedia.org/wiki/Alfa_Romeo_158/159_Alfetta
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Old 07-05-2009, 06:47 PM   #51
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Originally Posted by BAMBAM cheapsk8 View Post
Have been able to get superchargers for 2strokes for ever. They are called tuned pipes. Do some reading on tuned pipe theory.

Forced induction superchargers dont work well on nitro engines because the timing is controlled by the piston and placement of ports. The exhaust and inlet overlap, so any more volume than what fills the cylinder will just blow out the exhaust.

Detroit diesels whilst twostroke have valves .
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Originally Posted by darkvolf100 View Post
changing the port timing only requires a change of an internal part. change the rod length, mill the piston, open the crank journal THEY ALL CHANGE THE PORT TIMING
Whats that got to do with what I said?
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Old 07-05-2009, 07:38 PM   #52
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Quote:
Originally Posted by Alan D. View Post
Saved some work for people who want to watch the vid
http://www.youtube.com/watch?v=wcNPO...eature=channel

Rocket car SWEEEEEEEEEEEEEEEET!!!!!
yup this is the one and two vids down on the right side is it in action
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Old 07-05-2009, 07:43 PM   #53
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Originally Posted by BAMBAM cheapsk8 View Post
Whats that got to do with what I said?
port timing=timing of engine time when exhaust is open time when it closes ect.

those things that i listed can change the timing of an engine to run better
for example on the intake side of the piston if you machine the skirt so its shorter that opens the intake port earlier and it stays open longer allowing more air/fuel mix to enter the crankcase more fuel/air less weight equals higher revs and more power
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