RCU Forums - View Single Post - Running nitro in cold PLEASE HELP

12-26-2009 | 01:28 PM

#13

DarZeelon

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From: Rosh-HaAyin, ISRAEL

RE: Running nitro in cold PLEASE HELP

Quote:

ORIGINAL: flyinbence

OK guys, here is the deal, I'm not too happy the way my ST G51 is running in the mid-range, even when it was warm. Its annoying. I run omega 5% med-hot OS plug and it's tuned to as good as it will get; trust me. It's on an Avistar. So a couple of things here, it wouldn't run worth crap in the 30° weather. I've heard of people running them in the cold.

Does anyone have problems running nitros in the cold? Mine just dies constantly and is hard to start.

Also, please give me a couple of engines that ARE PROVEN to have NO mid-range, or any other tuning problems. I really need an engine that has a nice proven carburettor, unlike the ST G51's. I know some will tell me that its a fine carburettor. Well, its not for me. Are Magnums OK? I don't know. I want to fly in the winter time.

Flyin'

First of all, it is not 'a nitro', nor is it a 'nitro engine'...

It is a glow engine (see the name of this forum) and nitromethane is just an additive, which all glow engines out there could be set-up to run without.

Some low compression engines, designed for the north American market, will benefit from the addition of nitromethane to their fuel, but that will not transform them into 'nitro engines'... The ST G51 is not one of those and your using 5% Omega (which is right for this engine) attests to it...

'Nitro engines' only exist in nitrous-oxide car wannabes' dreams.

Also, as you predicted, the ST carburettor is not only 'just fine'; it is one of the best out there, allowing a separate adjustment of the mid-range fuel-curve.
It is a bit harder to adjust, compared to a simple two-needle; requiring the nozzle retention bolts to be loosened, to get to the mid-range facility.

This is also another thing that could fall out of adjustment, making this chore more tedious.

But if you do set your mind to it; if this carburettor is adjusted perfectly, your engine will run better than with any simpler carburettor, adjusted to its perfect state.

Regarding nitro; adding more of it to your fuel, in cold weather, *will* make any engine run better; even your run-of-the-mill glow engine.

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