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Author Topic: CF Forked Bellcrank Version 7  (Read 1534 times)

Offline Jeff Traxler

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CF Forked Bellcrank Version 7
« on: July 08, 2017, 09:46:41 AM »
   This is the seventh version of a carbon fiber bellcrank I have been working on.After posting pics of several others and taking the suggestions of my fellow C/L modellers I think I may have a version that covers all the bases.It has 4" spacing and the throw is undrilled to allow for that favorite dimension.The forked ends are canted in at 45 degrees so even at full throw there is no binding.These will have FAA certified AN392 clevis pins instead of bolts to save weight and have a much lower profile.Mounts on a piece of 1/8" music wire.Needless to say they are very strong and virtually indestructable for our needs.I will post a second pic to show 45 degrees of throw
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Offline Jeff Traxler

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Re: CF Forked Bellcrank Version 7
« Reply #1 on: July 08, 2017, 09:48:03 AM »
45 degree deflection.
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Offline Jim Hoffman

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Re: CF Forked Bellcrank Version 7
« Reply #2 on: July 08, 2017, 11:57:04 AM »
Nice Work.

Are you selling them?  What do they weigh?

Jim Hoffman
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Offline Jeff Traxler

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Re: CF Forked Bellcrank Version 7
« Reply #3 on: July 08, 2017, 01:07:55 PM »
Hi Jim,I forgot the important part.The bellcrank came in at 12.5 gr.I am still waiting on the hardware I ordered so I can weigh it to get a final weight.These will be priced at $25.Not a bad price for insurance on a $700 powertrain and 500 hrs of work.
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Offline Will Hinton

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Re: CF Forked Bellcrank Version 7
« Reply #4 on: July 08, 2017, 02:50:37 PM »
Jeff's work on these and other things he has done is immaculate.  'Course, it doesn't play tunes, but that's okay.  (His guitars do.)
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Offline Jeff Traxler

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Re: CF Forked Bellcrank Version 7
« Reply #5 on: July 12, 2017, 07:22:44 AM »
Just under 15gr. with the cable attach hardware added
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Offline Jeff Traxler

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Re: CF Forked Bellcrank Version 7
« Reply #6 on: July 12, 2017, 07:24:21 AM »
Low profile view of the forked end
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Offline Jeff Traxler

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Re: CF Forked Bellcrank Version 7
« Reply #7 on: July 12, 2017, 07:27:49 AM »
FAA certified hardware right from Wicks aircraft supply...............Sure is nice buying from them again!
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Offline Tim Wescott

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Re: CF Forked Bellcrank Version 7
« Reply #8 on: July 12, 2017, 08:55:22 AM »
I see no boss for the pushrod attach point?
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Offline Motorman

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Re: CF Forked Bellcrank Version 7
« Reply #9 on: July 12, 2017, 10:52:43 AM »
Can we name it the Batman bellcrank or the Batcrank? Riddle me this, could it be made thicker at the pivot? Holy carbon fiber Robin, I don't think he'll do it.


MM
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Offline Avaiojet

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Re: CF Forked Bellcrank Version 7
« Reply #10 on: July 12, 2017, 11:06:42 AM »
Quote from: Motorman on July 12, 2017, 10:52:43 AM
Can we name it the Batman bellcrank or the Batcrank? Riddle me this, could it be made thicker at the pivot? Holy carbon fiber Robin, I don't think he'll do it.


MM

I would have made it in two pieces and laminated them.  LL~ LL~ LL~
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Offline Jeff Traxler

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Re: CF Forked Bellcrank Version 7
« Reply #11 on: July 12, 2017, 11:56:43 AM »
Quote from: Tim Wescott on July 12, 2017, 08:55:22 AM
I see no boss for the pushrod attach point?

That is left to the individual user.I had requests for 3/4",7/8ths",1".Easy enough to drill and sleeve if needed.
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Offline Jeff Traxler

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Re: CF Forked Bellcrank Version 7
« Reply #12 on: July 12, 2017, 12:05:29 PM »
Quote from: Motorman on July 12, 2017, 10:52:43 AM
Can we name it the Batman bellcrank or the Batcrank? Riddle me this, could it be made thicker at the pivot? Holy carbon fiber Robin, I don't think he'll do it.


MM

NO!!When properly mounted there should be very little to no stress that requires it to be any thicker.Sorry to have to point out thickness adds weight!!!
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Offline Randy Cuberly

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Re: CF Forked Bellcrank Version 7
« Reply #13 on: July 12, 2017, 02:29:55 PM »
Looks very good....When are they going to be ready for sale.  I would definitely be interested in a couple!

Randy Cuberly









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Randy Cuberly
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