Ys 60fs with tuned pipe

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11-01-2015 | 11:59 AM

#26

Jim Oliver

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From: TALLASSEE, AL

Yes, measure to the first baffle.

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11-01-2015 | 05:01 PM

#27

MTK

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From: Whippany, NJ

Quote:

Originally Posted by Cbfn1

I took the pipe off the plane today.looked inside and it has what looks to be a washer welded or glued 9 inches back from the front of the pipe.looking through the washer I can see one more with an offset hole around 4inches further back.
I want to measure to the first washer or baffle that is at 9 inches right?
I cannot see through the pipe.
Im waiting for the 11/7 and 11/8 props to arrive.

9" is your reference measurement. Add to that the header length from the exhaust port. Follow the curve of the header. The total length should be 14" for the 11/8 and 11/7. You might get more performance from a shorter length but the length noted should get you in the ball park.

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11-01-2015 | 07:46 PM

#28

Cbfn1

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Thanks for all the help guys!
I have the pipe set at 15 inches right now.I had to run it and see with the 11/11.
what a difference! No more excessive oil or gas coming out the pipe runs great,it gets on the pipe at full throttle.My new tach is coming with the props.I will try them at 14 inches and post the rpms.
thanks again!