One of the first things I wanted to do upon getting into this hobby was slap a camera on the helicopter and get some aerial shots. While I've been somewhat successful in this regard, the TT39 on my hawk just puts too much smoke in front of the camera at the wrong times. I had an extra boom lying around, so I extended the exhaust to the tail.
Power doesn't seem to be affected, or at least not much, but what I'm worried about is that now all the smoke goes through the tail, and the gearbox is totally soaked in oil after a long flight.
Is this going to hurt anything? Or should I just dry it off after each flight and go with it.
Also, tuning the TT39 has been kind of a pain. I leaned it out a bit today because I noticed power was lacking, and after 5 minutes in the air the backplate didn't even feel remotely hot. The engine has had about 3 gallons through it so far. After leaning it out, climbouts were about twice as fast and fuel consumption visibly lower.
There is an audible pitch change in the sound the motor makes when I go to max throttle, which there wasn't before, but I could still hold my finger against the backplate of the motor indefinitely immediately after 10 minutes in the air. It was definitely hotter than before, but not so much that it would burn me. Does this sound right or should I lean it out more? Less?
I haven't been able to get to the local field the last 2 weeks due to weather and timing issues. Hopefully next week it'll work out, but I figured someone here might have the answers.