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HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › What tuned pipe to Squeeze Extra Power out of a OS 50 on 10% nitro
07-19-2006 05:09 PM  14 years ago
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leadlag

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Worthing UK

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What tuned pipe to Squeeze Extra Power out of a OS 50 on 10% nitro
Ok,

Back in the hobby after a year and and half break and been wringing my Raptor 50 out but wanting more grunt.

Currently running a OS 50 (8.5 gear ratio) with a Super Tigre carb. Fuel is Bekra 10%. Muffler Zimmerman.

This set up is good and provides good smooth power don't get me wrong but i am looking for more grunt without increasing the nitro as nitro fuel is expensive and i plan on burning a few gallons. A tuned pipe is looking the best option.

I want a pipe that is not to peaky that will give a range of power from 1800-2000 head speed. That does not make the the needle settings to critical and won't cook the engine.Possible?
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07-19-2006 05:22 PM  14 years ago
andydenis

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Manchester (UK)

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Hi

I had same problems and went back to 30 gearing i have Zimmerman pipe on one 50v2 also have hatori pipe on the other machine. Both are geared to 30 gearing and power is amazing on 15% CP around 1800-1900 rpm keeps the engine in peak range. My machines used to bog a little top and bottom of the pitch ranges on 50 gearing.

Unless you can afford 30% nitro all the time (i know i cant)just change you gearing to the 30 gearing and keep your combo. Your engine will have loads of power nice and smooth and not to loud.

Oh and Hatori pipe acts like a gov at 1900-2000 its peaky but awsome power
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07-20-2006 12:28 AM  14 years ago
leadlag

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Worthing UK

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Hi Andydenis,


Thanks for the reply,sounds like a cheap way of upping power but noticed that you state you had a zimmerman pipe. Do you mean you had a zimmerman tuned pipe or muffler?

Reason i ask is that i have a muffler so doubt it has much tuning effect whereas if you are using tuned pipes on both then i can see that upping the revs will make the pipe on song and give plenty of power.

Did the engines run much hotter and did you have to change the mixture much?


Cheers Ian
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