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Old 03-07-2007 | 11:48 PM
  #36  
ag4ever
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Joined: Oct 2004
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From: Richmond, TX
Default RE: Sig Hog-Bipe kit.

I did the cam (bell crank) to lower the throttle cable under the fuel shelf. If I had not, the throttle would hit the fire wall if I wanted to get full throw. It also would be almost above the fuse if the throttle was aimed up, and it would hit the engine mount if it was aimed down. By addin the bell crank, I was able to have the throttle swing out in front clear of the engine mount and clear of the firewall. It also sloved my issue of having the throttle cable above the fuel shelf and bending down to where all the servos will be mounted. I don't like curved pushrod, and if it can be installed where they are as straight as possible there will be less friction and therefore need less power to move it, so the battery will be drained slower. Bell cranks do add a bit of slop to the controls, but I figured it would be acceptable in the throtle, but I would not do it on control surfaces.

The engine is way back there, but i would like it about 1/8" further back. I might even want it back a 1/4" further depending on how far the prop is out front when I add a spinner back plate. Right now if I mounted a prop directly it would clear the cheeks by 1/4".

I am hoping balancing this plane won't be a big issue. Right now it is really nose heavy, and I will have to mount the radio gear way back to counter balance that big engine. That is one of the reasons I am trying to get the engine as far back as possible.