--- In Indoor_Construction_at_yahoogroups.com, Brett Sanborn <brett.d.sanborn@...> wrote:
>
> Mark,
>
> Are you talking about Kang's carbon tube hub? I wasn't aware that Treger
> ever used pultruded tubes for the main hub part; all Treger's hubs are
> fiberglass. >>
OK, will assume that's correct. I was recalling a photo I saw, apparently someone else's carbon hub.
<<On the fiberglass tubes that I have made, which are .074" ID,
the tubes come out at 3-4 mg/cm.>>
Are you referring to the prop spar tubes here?
<<The weights for the 1/16" ID square center
portion are similar at about 4 mg/cm. >>
Square tube for main hub? With a Kevlar thread (Treger) hinged to round spar tubes? I wasn't aware of that match-up, either.
Anyone care to describe how to make fiberglass tube (for prop spar)? My couple attempts ended up no better than a comparable weight paper tube (4-5mg, .375" long.) So back to wood hub, paper tube, hohum.
MB
Received on Thu Feb 28 2013 - 13:22:59 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:47 CET