Thoughts on engine selections......

[Chris In Milwaukee]

Once it’s moving and warm, it’s smooth. First 30 seconds or so when it’s really cold it’s shaky, and shutdown of course. But I would like to get a dynamic balance. But it did prompt the question if there’s a counterbalanced 360.

[Chris In Milwaukee]

Once it’s moving and warm, it’s smooth. First 30 seconds or so when it’s really cold it’s shaky, and shutdown of course. But I would like to get a dynamic balance. But it did prompt the question if there’s a counterbalanced 360.

Turns out this was an ignorant question on my part. I had the wrong idea about why counterweights are used. Here’s a good explanation. Apologies for the distraction!

http://www.vansairforce.com/community/showthread.php?t=119138

[Bdflies]

Not an ignorant question at all. It prompted curiosity and led to shared knowledge!

If your O-360 is that rough, on startup, I'd really take a hard look at the spark plugs and maybe the wires. When the plugs get fouled or gaps widen a bit, mis firing appears as roughness.

Bill

[Chris In Milwaukee]

Annual found 6 out-of-spec plugs and mags a few degrees out. I’m sure I’ll have a “new plane” in a couple of weeks when the exhaust rebuild gets back!