How to know which pipe to use.

[Ron Van Putte]

Gabriel Gonzalez wrote:

>Ron, did you modify any of the pipes, or just used them like they are?
>
>  
>
I did not modify any of the pipes.  Since I use headers with a 1/2" 
outlet, I use 1/2" PTFE teflon tubing between the header and pipe. 
 Consequently, I have to expand the diameter of the teflon tubing to fit 
the pipe.  I do this by heating the ends of nut drivers with 
progressively larger diameter on my kitchen stove.  I push the smallest 
one into the tubing and allow the heat to soften the tubing until it is 
very pliable; then I insert the next larger size and so on until I can 
slide the muffler into the tubing with no resistance.  As the teflon 
tubing cools, it clamps down on the pipe.  I have never had a piece of 
PTFE teflon tube fail in this application.  My Advantage has had the 
same exhaust system in it for two contest seasons.

Ron Van Putte

>
>----- Original Message ----- 
>From: "Ron Van Putte" <vanputte at cox.net>
>To: <discussion at nsrca.org>
>Sent: Wednesday, October 08, 2003 2:32 PM
>Subject: Re: How to know which pipe to use.
>
>
>  
>
>>Gabriel Gonzalez wrote:
>>
>>    
>>
>>> I got a 7.5cc Macs quiet pipe for my 140FZ, but I'm not sure if it's
>>>      
>>>
>the right thing to use.
>  
>
>>> How can it be determined what would be a good pipe to use with a 4c
>>>      
>>>
>engine?
>  
>
>>> 7.5cc seem awfully small, but in an earlier post I saw someone using a
>>>      
>>>
>3.5cc pipe!!!! Was this a typo?
>  
>
>>> I don't want to ruin my engine or my plane, and thought to ask before
>>>      
>>>
>trying it.
>  
>
>>>      
>>>
>>I've been using 6.5 and 7.5 cc Macs Quiet pipes on YS 1.20s and 1.40s
>>for years.  On my 11 lb Advantage I have a 7.5 cc Macs Quiet pipe on a
>>YS 1.40L and it has almost unlimited vertical on Cool Power 25% Pro
>>Pattern fuel.  Some people say you should use bigger pipes and that may
>>be fine for them, but I don't and have all the power I need.
>>
>>Ron Van Putte
>>
>>
>>=====================================
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>>
>>    
>>
>
>
>=====================================
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>  
>

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