******supercharger*******

[aamick1971]

hey all boat nuts found something that might work on inboard nitro engines www.rbinnovations.com check this out!!!!

[Tomass]

sweet, to bad they are for cars

[aamick1971]

no !!!! just write them an e-mail they also do boats .i did they told me to send them a pic of the boat to show how the engine sits in the boat and the and they can custom make one to fit in your inboard engine.youall so have to send them the engine.they told me for my k&b 3.5 rigger it cost between $190.00-$225.00 for it. me i dont have that kind of cash right now.

[Spraguepsycho1]

The car guys in the other nitro forum have been arguing endlessly about this supercharger for quite some time now. Most of the people claiming to be engine builders claim there is no way the supercharger can work on these engines due to the port configurations, and concerns about how to pressurize the fuel system enough to avoid being blown back from the carb into the tank and starving the engine. I would love to see a realworld unbiassed evaluation done on this thing to see if it really works or not. If it works and gives similar results to full size car engines, a person should be able to get a 40%hp increase easily out of it, with the most noticable gains down lower in the rpm range where the naturally aspirated engine lacks enough vacume to run efficiently. I do know 2 stroke snowmobile and atv builders have been using turbochargers for years with impressive results, so boost might work well on glow 2 strokes too.

[Tomass]

can u get them for a GS 15, wouldnt having a super charger guzzle fuel and decrease engine life. i love super charged engines, would it be possible to make a 8 cilinder engine by welding a 8 .10 sized engines, how cool would that be

[aamick1971]

i agree guess someone maybe radio control boat magzine could do a test on this supercharger and if they would really work.it doesnt matter what type of engine or brand ,that would give readers something new to read about.my friends and i were talking about this at pond the other day,and there is a lot of varible that might make this not work. i want get into it because, i have really seen one run.i would like to hear from someone that has ran one on a boat.

[Safe_Cracker]

Don't you think if it really worked just about everyone in the hobby who could afford it would have it? From what I have heard they are no more efficient then a small fan blowing into the carb. They lack the rpm, volume and close tolerance for it to be able to produce any real boost (PSI). Now if someone can produce a high quality, exhaust driven micro turbine then you would have a much better chance but even then you would have to lose the tuned pipes. Probably the first to benefit from a turbo-charged engine would be the 22ccs and up gas engine but then if it actually worked you would have to plumb in a better fuel system, increase part strength and run a higher octane or some type of timing adjustment.:D

[TTKarl]

Ok, the whole point of a supercharger is to force air into the combustion chamber right. What I don't understand is these are 2 stroke motors. The intake port and the exhuast port are both exposed at the same time. So with a supercharger wouldn't you just be forcing unburnt air and fuel in the combustion chamber and right out the exhaust until both ports were covered by the piston. To me I don't see how it could work.

[Turbosun]

@ safecracker:

MHZ Marine Gas Turbine (http://www.mhz-engines.com/database/generate.php?output=filter&generateID=274)

[TTKarl]

Umm... translation please. All I see is german or I think it's german.

[bugfanatic]

2-stroke superchargers aren't all that efficient, you have to time the engine by the sizes of the ports so that the exhaust closes before the intake. One of the few well-built superchargers for a 4 stroke engine is built by Conley & they are SWEET! http://www.conleyprecision.com/

I remember when the Toledo RC show used to be held at the sports arena & he would start these things up & run them. Now that they're over in the civic center he only starts them for a few brief seconds. Still pretty impressive though. I'd love to see an inboard jet drive setup with one of these things.

[Safe_Cracker]

That is a gas turbine as in engine and not miniture exhaust driven turbine with a compressor (Turbo) but if it was smaller, you could use some of the components. Superchargers for two strokes are called tuned pipes, lol... Just remember, ANYTHING could be done, how much time are you willing to put into it? :D :p ;) :)

[Turbosun]

I understand the difference...However, a gas turbine is also an exhaust driven turbine. Just not the exhaust from a piston engine....:D :D

[mjmsprt40]

This would be a real trick getting it to work right. How many of us are fighting the tuned-pipe wars? Getting the pipe length, needle settings, nitro percentages, propeller sizes and all the rest of it right all but gets to be a full time job in itself some days, and now you want to throw in a supercharger too. Don't forget that some of these engines are running on the margins of material endurance as it is. A broken engine won't win any races, regardless of how much super-duper charging you try to force on it.

Of course, that having been said, no doubt somebody will figure out a way to make it work and at reasonable prices, too.

"The person who says it cannot be done should not interrupt the person who is doing it." Old Chinese proverb.

[nissanlover]

ok, the ports are not open at exactly the same time, but very close, the exhaust closes shortly before intake, but due to the inefficency of the engine the whole mess of burned gasses do not exit the exhaust completly. so there are two things that rbinovations took into consideration. 1 eficcency 2conservation.
glow engines work like this,
1piston goes up and creates vacume in the case
2 window in crank opens creating a pulse that draws fuel and air in, window closes,
3 2pulses ocurr, one in the cylindr and one in theexhaust,
4intake opens creating the movement of mixture then the exhaust opens to make the mix mostly move into the cyl.but not out
5 there is low pressure in the pipe, high pressure inthe case due to the vacume thing from steps 1 and 2, and very high pressure in the cyl. due to laws of physics, the gas will move to the piont of lesat resistance, the exhaust.
the exhaust gas creates a pulse as it moves out and sucks in the new gas and expells MOST OF the burnt.
and that is the cycle it goes through 40000 times a minute.
the charger creates the pressure in the case higher than usuall to push the exhuast completly out and possibly a little unburnt as well. but that dont hinder performance. the charger is basicly making the engine more efficient.

example of the effect of the charger is your own car.
egr or exhuast gas recirculation system feeds your car burned gasses to make it use less fuel and burn more harmfull pollutants.
if you takr this peice of equiptment off, which is illigal, it will gaina ton more power because the mix that goes in is completly fresh. not 35- 40% burned.meaning 35-40% more power, exatly like rbinovations says.

and they do work. there is a guy that runs one at the races in a small town about 30 minutes south of me and though i havent seen the car go, he claims his tc3 with foams will wheelie ithe hid small block ofna 21