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Engine basics => Engine set up tips => Topic started by: mark eisenhut on October 20, 2006, 08:04:32 AM

Title: is it true
Post by: mark eisenhut on October 20, 2006, 08:04:32 AM

i have a la .25 my friend says it will have more power if i dint run the muffler. and what prop should i run with on a super clown.
thanks
mark eisenhut

Title: Re: is it true
Post by: peabody on October 20, 2006, 02:30:42 PM

Mark...
Your friend may be right, but you will find the LA .25 is ideal for the Super Clown, with muffler....
A 9X4 APC is the usual prop....

Title: Re: is it true
Post by: L0U CRANE on October 21, 2006, 11:28:36 AM

Mark,

Chip or Tongue mufflers available for the LA25 are lighter than the stock OS muffler by an ounce and more. They are a bit louder, but don't seem to cost power. In fact, on an LA25, I've seen a gain in RPM, same steady low-2 run and economy on an APC 9-4; 10-10-10 fuel.  Not all chips are muffler tapped, but that is not hard to change.

I fly at 5,000' usually, or at 2,400' occasionally, and the above has been consistent at both.

Your model is small enough that trimming an ounce-plus off the front end might be worth considering...