Shopmade bellcrank - RCCanada - Canada Radio Controlled Hobby Forum
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Old 12-08-2011, 08:37 AM   #1
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grosbeak's Avatar
I am: John R
Join Date: Jun 2011
Location: Ottawa ON
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Futaba 8FGS
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Shopmade bellcrank

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I wanted a bellcrank for the choke on the DLE 20 I'm putting into my Pulse 125. I know light-duty bellcranks are cheap - heck, you can get two from Du-Bro for $1.69 at the LHS. I did this a challenge to see it I could.

The parts: A spare bolt, washers and nut, an unused Hitec servo arm (clipped, shaved, rounded and reamed) and two support arms cut out of plywood reclaimed from an empty clementine crate.

I drilled the holes in the wood with the pieces clamped to a back board, stepping up two drill bit sizes each time. After drilling I wicked some CA into the wood around the holes on both faces of each piece, then I pressed the washers into the wood with a vise. Put together:

The intent is to mount it on the back of the firewall. The last step was to add a backing plate for (a) extra spacing and (b) ease of attachment. It'll go about here:

I don't know that it would stand up to repeated use with a control surface but it ought to work just fine for the choke.

There you have it. This airplane may be an ARF, but this mini-project was definitely a build.
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RC Aviator, gas power proponent
MAAC 83386, Stetson Flyers, Ottawa ON Canada
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