Hi Mark.
The weights will be similar IMO, but tubes for the spars are much stronger than tissue so you can really tighten the kevlar. Also in gluing, as they are made with epoxy, Ambroid use won't mess them up.
They are more time-consuming to make however.
Regards.
Mike Kirda
--- In Indoor_Construction_at_yahoogroups.com, "Mark F1diddler" <f1diddler@...> wrote:
>
>
>
> --- 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 - 13:44:28 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:47 CET