8000ft

I'm thinking of going NOS on my MT, mainly because of my altitude, and I'm wondering if it's worth the potential risks.
My two main questions are, how do you like it? and have you had any engine related problems(burnt rings, pistons,ect)?
I'm running the 29cc with a 488 carb and jetpro pipe but because of my location (8000 ft elevation) I'm down 24% of sea level performance. (reduce HP by 3% for every 1000ft gain in elevation).

Mike SVOR

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Do you happen to know your compression ratio?
You could 'up' your compression ratio to ~13.5:1 or higher on standard pump gas to compensate for your altitude.

just a thought.

8000ft

The 29cc is 14:1.

Mike SVOR

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Wow,
I didn't know that.

Do they even make N2O kits for R/C?
sorry, I'm new to gasoline R/C. []

just tryin to help

radio_controlled_mad

ORIGINAL: Mike SVOR

hellya

http://www.oneillbrothers.com/rccar/nos.htm

kengentry5000

My Feedback: (2)

Hey RCM is that your engine?

That is a cool engine test fixture. It looks like it has some sort of loading mechanism for the crankshaft.

radio_controlled_mad

i wish it was my engine - i think its oddified own personal one...prob have a good few 00000 on the price tag

Doahh

That would be a dyno... That nos system looks sweet

Mike SVOR

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Aren't those basically "whip-it" refills?

I don't think there is actually any 'liquid' nitrous oxide in them.
N2O needs to be at ~500 psi to be in liquid form. I doubt that those little containers are pressurized to that level. I could be wrong, but hey...
What would injecting N2O 'vapor' do?


Ever thought about injecting nitromethane?

carpy100

that motor is one ian oddie made up. those arn't containers! the red and the blue cylinders are pulsoids. one injects fuel and the other nitrous. it is called a wet system. the kit or components are made by highpower/wizards of noz.a guy called trevor is the owner of this uk company and is the worlds leading authority on N2O application.
the kits just a converted motorcycle kit.

http://www.noswizard.com/bboard/

Mike SVOR

My Feedback: (1)

sorry, I was talking about this link: http://www.oneillbrothers.com/rccar/nos.htm

8000ft

Yep they are the same size as CO2 cans for paint ball guns,but non refillable. The cylinders are about 1.50$ each so I'll just order a 50 or so to start. I don't know how long each can will last, 2,5,20 seconds?


still looking for some personal experience testimonials on NOS.

Mike SVOR

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I've got n2o for my turbo mustang. But that's all. sorry.

You won't get anything out of those 'sneeky pete' style n2o kits. Unless it has a real bottle that has a liquid pickup tube, a bottle pressurized to 1500 psi, a nitrous solonoid AND a fuel solonoid, You won't see anything as far as power.


Here's a vid of a small engine on spray: http://videos.streetfire.net/video/F...DFFDB8FE6A.htm

lt250dave

What mike is saying is paritally true, but the only way for nitrous to work is by compressing it in a liquid state and then releasing into the atmosphere for atomization to occur. but the problem is that the kits i have seen only spray TOWARDS the air filter and not directly into the carb or crankcase, in that way you lose more to the surrounding air than the motor takes in. With the small kits you would have to mount the CO2 size bottle running down hill or with the outlet of the bottle facing the rear of the vehicle so the liquid would slosh (for lack of a better term) to the outlet of the bottle on takeoff. If you look at the pic of the Sprayed motor above you will notice it has what looks to be a 20oz CO2 bottle mounted on it which can be fitted with a pickup tube so the bottle can be mounted upright, i have yet to figure out how the fuel enrichment occurs on that motor though since there is no fuel pump or regulator to raise fuel pressure. With all that said, i would say there would be some gain with the "Dry" nitrous kit but not as much as you would gain with the "Wet" kit as pictured. If there was nothing to gain from a Dry kit why do Edelbrock, NX, NOS, Nitrous Works, ZEX and the many other companies that do not produce Nitrous make dry kits? if the kits didnt work, no one would buy them.

Mike SVOR

My Feedback: (1)

I think you're confused with the terminology.

A "wet" nitrous system sprays n2o and fuel into the engine usually around the same place. Ex: Both n2o and fuel jets are roughly located in the same area. Eg: carb plate system or fogger nozzle with fuel in air intake hose.

A "dry" nitrous system sprays n2o into the intake track and then augments the fuel injector's fuel pressure to compensate for the extra 'air'.


A "sneeky pete" style n2o system that just sprays in liquid n2o is designed for a pre-set, rich running carb. You set the carb to run rich, then when you hit the n2o, the air/fuel ratio is good.

Mike SVOR

My Feedback: (1)

The one and only thing to remember about n2o is: N2O doesn't make hp. FUEL DOES. Injecting only N2O won't give you any more power unless you add the additional fuel needed to compensate.

If you see a N2O system that doesn't add fuel, it's garbage.

lt250dave

I understand completly the terminology but by saying there is nothing to gain with a DRY/ sneeky pete kit is untrue. any time you can get an engine to burn more fuel you will see an increase in power and by adding nitrous/ more air to an already rich engine you will see some sort of power increase.

carpy100

dry kits 'work' but they are not as safe due to leaning out the fuel mixture.on a bike the bottle is pointed downwards and the nitrous just flows out under the tank pressure(or you can boost the bottle with nitrogen to maintain a more constant pressure)
basically, the kits specifically available for the zen/cy engines are only ever going to be used occasionally as a giggle over short periods of time, therefore leaning out wont be too much of an issue.the kit ian oddie made up, was an experimental build for racing purposes, therefore longer durations and the necessity to use a safer wet system.i believe that racers who race at altitude have been interested in N20 application to boost poor engine performance.

8000ft

The kits have a switch that is conected to the throttle (how and where I'm not exactly sure) but it is only tripped when full throttle is applied and that is what I am after. I can't wheelie up here, down in Denver i can. I'm also planning on hooking up the primary power switch to my third channel so that I can turn the system on or off from the radio on the fly.

carpy100

if you just want it for wheelies it should be perfect![8D]

carpy100

just had a thought go on some of the goped forums to find out more. lots of them run n2o and the kits are cheaper

8000ft

Yep, that's pretty much it. I feel like I'm missing out on some of the fun that you lucky low landers are having.

JRexA

Sorry to ressurect this thread, but the Ultimate NOS Zenoah has just been put up for sale.

Here it is http://www.rctek.com/phpBB/viewtopic...180&highlight=

I will be surprised if He accepts bids of less than US$ 1000, but someone might be lucky.

SELWA

My Feedback: (1)

Saw that a few days ago. The NOS set up was apparently 500 euros alone!