Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

Est pipe length starting point

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Old 12-24-2002, 06:44 PM
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flap51
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Default Est pipe length starting point

Adding a pipe (loud) to a midget mustang powered by an OS 91 FX. Any good ideas out there as to a good length to start at. In boats, I know its around 12 " from pipe max dia to glow plug. As for a prop 13x10, and fuel at 5 to 10%. (boats utilize 40 but are water cooled)


My freind has a midget almost ready with a dub 90 and loud pipe. I know that it will be an uphill battle to stay close but the two in the air should be a crowd pleaser.
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Old 12-25-2002, 12:03 AM
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Ernie Misner
 
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Default Est pipe length starting point

Greetings!

Go to the Mac's products home page and find their info on pipe lengths. They have lots of information there on header pipe length. Also they suggest cutting the header pipe off 1/4" at a time until max rpm's are found.

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Old 12-25-2002, 02:03 PM
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Default Est pipe length starting point

Thanks!!!!
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