stunthanger.com
Building Tips and technical articles. => Building techniques => Topic started by: john e. holliday on February 26, 2015, 07:39:48 PM
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Been working on the planes and can't believe it took me most of the day to do the bell crank and getting it mounted. This is on/in one of the designs of one of my heroes. Got the wing tip guide in also. Went to my box for a bell crank and couldn't find them. Now I have this one done they will probably show up. Had these Perfect 3 inch bell cranks laying around and I know they are not strong enough by themselves. So I doubled them up. 4-40 allen head bolts. 1/16 tubing for the lead outs to go through. Should last as long as I will. When I get further along will post pics as the fuse is framed up waiting for the wing and tail assembly.
Need to get fingers to hit right keys. jeh
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Doc, it's a good technique but do you have a plain bearing surface for the leadout loops to run on?
I would worry about threads cutting through the 1/16" tubing fairly quickly if you don't.
I remember Windy doing the ends of his carbon fibre bellcranks in a similar way but he used small shoulder screws which provided the plain bearing surface.
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John,
You don't really need the brass tubing. A simple eyelet is fine. Do the ends any way you want, but we just did the ends the old school way, with a loop, pull and crimp on the copper tube.
I've never had one come apart as far back as 62 when we were all active. Did a great deal of flying back then. I wasn't the only modeler that did his bellcrank this way, I was just the first.
Glad it's catching on.
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I wasn't the only modeler that did his bellcrank this way, I was just the first.
Glad it's catching on.
Definitely a real trend setter.
Keith
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Definitely a real trend setter.
I mean, where would stunt be without ripping off Chuckie? He also apparently can beam thoughts into people's heads, since somehow we all managed to rip off *someone we never heard of until a few years ago* and has never done anything at all in stunt. I suppose that just makes his genius even more impressive!
It's Charles' world, we all just live in it.
Brett
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Brett,
LL~