Re: what is difficult in building indoor duration

From: Yuan Kang Lee <ykleetx_at_gmail.com>
Date: Wed, 17 Oct 2012 21:24:09 -0000

In F1B, the "best" components are available for purchase by anyone, yet it still takes a HUGE amount of time to become competitive in F1B. There is a lot more to great flying than just the components.

In F1D, the "best" components are:
- Schramm's wing
- Schramm's carbon propeller
- Sanborn's propeller
- various VP hubs, including Treger, Schramm, ...

These "best" components ARE NOT readily accessible by the average F1D competitor.

I'm making this point because many have argued that top F1B components would not be accessible unless the BOM rule were dropped.



--- In Indoor_Construction_at_yahoogroups.com, "Yuan Kang Lee" <ykleetx@...> wrote:
>
> So if there's no advantage in Treger's hub, why not allow it to be purchased and used?
>
>
>
>
> --- In Indoor_Construction_at_yahoogroups.com, Jake Palmer <82.jake@> wrote:
> >
> > I tend to agree with Mike. While I certainly appreciate the elegance of
> > Treger's hub, I don't think it offers any performance advantages over an
> > older style hub.
> >
> > On Wed, Oct 17, 2012 at 1:29 PM, mkirda_at_
> > <mkirda_at_>wrote:
> >
> > > **
> > >
> > >
> > > I would have to disagree on composites being out of reach, Nick.
> > > A foot of carbon could make a lifetime of hubs and costs ~$5. Add
> > > laminating epoxy and balsa rather than Rohacell and you have an easy carbon
> > > yoke in just two layup steps. All you need is a Food Saver.
> > >
> > > I am not convinced that the Treger design is any better though- There are
> > > some torsional stresses that might be better dealt with using Lutz
> > > Schramm's design for example.
> > >
> > > Regards.
> > > Mike Kirda
> > >
> > >
> > > --- In Indoor_Construction_at_yahoogroups.com, Nick Ray <lasray@> wrote:
> > > >
> > > > I think the ease of construction has a great deal to do with the
> > > materials
> > > > involved. A Brown / Kagan style hub is well within the range of average
> > > > indoorist. Most of the materials can ordered from A2Zcorp or even
> > > scavenged
> > > > locally. However, composite hubs like Treger, Tyson and Sandborn have
> > > built
> > > > require substantially more involved manufacturing processes.
> > > > All three use formed fiberglass tubes and carbon layup screw holders. The
> > > > vacuum bagging process alone is cost prohibitive for many people. One has
> > > > to make 6 or 7 composite hubs to break even when compared to the cost of
> > > > buying them from Treger. Maybe someone would like to produce V/P kits
> > > where
> > > > the base components are formed and then sent out with assembly
> > > > instructions.
> > > >
> > > > If F1D keeps moving in the direction of using more and more composite
> > > > technology we are going to be in the same situation as F1B within the
> > > next
> > > > ten years. I am for not placing materials restrictions on the models, but
> > > > at the same time I think that for many competitors, particularly juniors
> > > we
> > > > may have to decide how we would like to go forward with regard to the BOM
> > > > as the models become more intricate.
> > > >
> > > > Regards,
> > > >
> > > > Nick
> > > >
> > >
> > >
> > >
> >
>
Received on Wed Oct 17 2012 - 14:24:10 CEST