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Building Tips and technical articles. => Building techniques => Topic started by: Phil Goldberg on July 02, 2015, 06:40:51 PM

Title: Carbon Fibre rod instead of bolt for bell crank
Post by: Phil Goldberg on July 02, 2015, 06:40:51 PM

I am building a ringmaster and thought I might use a carbon fiber rod instead of a bolt or metal wire for mounting the bell crank.  I know the bolt or metal rod is much stronger but the distance between the plywood mounts is so short, about and inch or a little longer, that it seems in order to break a carbon rod that short, the ribs would give way first under the pressure.  Thought I might save some weight.  Has anyone done this with success? 

Title: Re: Carbon Fibre rod instead of bolt for bell crank
Post by: RC Storick on July 02, 2015, 06:49:34 PM

I would not do this. Use piano wire

Title: Re: Carbon Fibre rod instead of bolt for bell crank
Post by: jfv on July 02, 2015, 07:23:41 PM

Ditto what Robert said.  The CF rod would be prone to wear.

Title: Re: Carbon Fibre rod instead of bolt for bell crank
Post by: Tim Wescott on July 02, 2015, 08:12:01 PM

What Jim said -- CF will wear much more quickly than metal would.  It's such a small bit, you're not adding that much weight.

Title: Re: Carbon Fibre rod instead of bolt for bell crank
Post by: Phil Goldberg on July 02, 2015, 08:14:15 PM

Thanks for the help. I will use metal.