ORIGINAL: davesteemke
I have a Question concerning the cowl. I have a OS FS-III 1.20 4 stroke. Sideways mounted. I'm going to have to cut a small opening on the cowl for the heads to fit. But what should I do for the exhaust? I could have the exhaust facing mostly backward and cut a HUGE hole in the bottom of the cowl, or position it 90 degrees sideways (the exhaust fumes will be exiting on the left of the aircraft) and cut a small hole.This is hard to explain so bear with me....Is it alright to have the exhaust opening in the slipstream? It would be 90 degrees of where it should be. Does this offer any disadvantages? Let me know what u think, and what u've done.
Thanks 4 Your Time,
Dave
Here's an old thread rangerman started that has a lot of good ideas for mounting your engine & exhaust.
http://www.rcuniverse.com/forum/fb.asp?m=3741761
I don't think it really matters where your exhaust is pointing as long as it is able to push the exhaust away from your plane. If you look at RCDon's Ultimate Smoke II project you'll se he's got the exhaust pointing out pretty far.
http://www.rcdon.com/html/the_ultimate_project.html
Here's some pictures of how I had mine set up.