Re: carbon VP hub data?

From: Yuan Kang Lee <ykleetx_at_gmail.com>
Date: Fri, 01 Mar 2013 00:38:15 -0000

There are two sizes of carbon tubes that could be used for the "hub" part of the VP. Here are the sizes and weights:

.028"/.010" (OD/ID): .0102 g/in
.040"/.020" (OD/ID): .0203 g/in





--- 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. On the fiberglass tubes that I have made, which are .074" ID,
> the tubes come out at 3-4 mg/cm. The weights for the 1/16" ID square center
> portion are similar at about 4 mg/cm. The balsa core is added later.
>
> Brett
>
> On Thu, Feb 28, 2013 at 3:36 PM, Mark F1diddler <f1diddler_at_...> wrote:
>
> > **
> >
> >
> >
> > If anyone has bought a Treger VP, can you give some data about the carbon
> > tube hub, such as wall thickness and diameter? Or if you know the weight of
> > the raw tube per inch, even better. My balsa hubs are 15-16mg (1.05" long)
> > and I'm wondering how much weight may be saved with carbon tube.
> > thanks,
> > MB
> >
> >
> >
>
Received on Thu Feb 28 2013 - 16:38:16 CET