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Autography FlightPower . Advantage Hobby . Revolution Models

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Speed - Performance - Drag Race > This one is for REAL!!!!
 
 
Dix_Fix
Heliman
Location: Sydney,NSW - Australia

N2O 2

I think U r right r.e. the crank pressure. Also I agree with U r.e. "a bit more nitro in the fuel". This thread started with people saying that supercharging (with reasonable results), could not be done, on 2 strokes (without valves). My point is, that it can be done, & with good 2 great resultes.

vinividivici
06-25-2005 Over year old.
 
 
deafheliflyer
Veteran
Location: Arizona

hi

Bottom line.. This doesnt work.. People like the "idea" of a supercharger and can "self talk" that there is more power.. Research doesnt show it..

Company just comes out with them for profit and feeds off people's gullibility.. Fact is.. A supercharger on an Os engine isnt going to produce significant increase in power.. It is just a marketing gimmick.


Just my $.02
06-25-2005 Over year old.
 
 
Al Magaloff
rrMaster
Location: 12,199 Posts- Enough Time Wasted. See Ya!

DixFix, one other thing I have a problem with. Supercharging is compressing air, not wiffing nitrous. Huge One, in a helicopter, we don't want momentary, we want constant steady power output. It's nice to be in the think tank, but the practical application of some ideas need to be considered. Why do you suppose the supercharger and nitrous thing never got past the RC truck stage? Tell me how you needled that motor. So you're saying the needles were the same with and without the nitrous? Or do we now have onboard mixture control?
06-25-2005 Over year old.
 
 
HugeOne
Key Veteran
Location: Quebec, Canada

I had no onboard mix control, but I had a needle on the nitrous alone, so I had control over the quantity of nitrous. When my bottle was pressurise with nitrous and ready to use, I simply richen the motor 1/8 of a turn to be on the safe side. I started at first with very little nitrous then opened the nitrous needle until I felt the power. Having a 5 min shot of nitrous in an heli will take a really big bottle, but I just tought of a nitrous shot taking place when the blades reach full pitch. Not sure if the supercharger pressurise the intake air, maybe just a little, what I think it does to produce more power is that it just blow air in. This way the scavenging effect is maximized and the RPM raise faster, so even with a tired engine you still got good power. In an heli RPM stay constant, so you're surely right that a supercharger of that kind don't work in that application.

Raptor e620 w/V-bar, Tango 45-06, Phoenix 85HV, TrueRC 12S1P 4000mAh
06-25-2005 Over year old.
 
 
Dix_Fix
Heliman
Location: Sydney,NSW - Australia

Real world

Please dont misunderstand me, Im of the opinion that SC on 2stroke(no valve) is a waste of time. I was simply playing devil's advocate. The fact is that it does work. The reality is it DONT WORK GOOD ENOUGH 2 make it a reality. Even in the real world (non model) the only time N2O is of any use is 4 short boosts. This can be the difference between a .5 second win. This is especially so in (class) racing where everybody is supposed 2 b the same. FYI they go 2 some far extremes 2 hide it as well. Sorry Im off topic.
See yas

vinividivici
06-27-2005 Over year old.
 
 
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CarbonXtreme . Midland Helicopters . HeliProz

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Speed - Performance - Drag Race > This one is for REAL!!!!
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