ORIGINAL: winglift
I am building a Beat On 50 airplane as my first attempt at building and flying a pattern plane. Its an older kit, but it looked like a good airplane to build. The engine requirements suggest a 4S 50 or 2S 30. The manual shows an OS 52 surpass with a tuned pipe. I have a YS 63 engine and was wondering if it would be a good engine for this kit? I am also new to tuned pipes, so any suggestions would be appreciated.
The Akiba Beat-On is a good design.
If you're using the 4S YS 63, you don't need a tuned pipe. Either a regular cigar shape muffler, or, a Hatori type short muffler will do. Just pay attention to the final weight, it may be slightly nose heavy.
However, with the Beat-On being an order design, it probably has a pipe tunnel. Therefore, you can use an older style Hatori flexible header connecting to a Macs long silencer, that will work great. Be sure to soft mount both your header & pipe. Otherwise, the header will break quite easily.
Adrian