Re: what is difficult in building indoor duration

From: Leo Pilachowski <leop_at_lyradev.com>
Date: Thu, 18 Oct 2012 00:12:39 -0000

John Kagan has the best wing design in F1D.

LP

--- In Indoor_Construction_at_yahoogroups.com, "Yuan Kang Lee" <ykleetx@...> wrote:
>
> 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 - 17:12:40 CEST