F1M / Pennyplane course time allocation?
On Wed, Jun 12, 2013 at 11:44 PM, mkirda_at_sbcglobal.net <mkirda_at_sbcglobal.net
> wrote:
> **
>
>
> Out of curiosity, do you have a hub design in mind already? Are you
> thinking of providing some of the parts prefabricated?
>
> I would think that handing someone a shaft with the carbon torque bar
> already glued on would help immensely in terms of time. You can show how to
> fabricate the part as part of the instruction. Likewise if you for example
> use the carbon tube you could provide it pre-drilled for the hypo - while
> showing how to drill it. Same for the screw holder. To do all of these
> parts from scratch might take the better part of a weekend.
>
>
Thanks Mike, good points there.
I have not fixed the details of the hub yet, but I think I'll lean towards
something along the lines on Bill Gowans hub for dummies. I think that the
aim of the course would be to push the participant to a level where they
can construct the next VP on their own, the first one would hardly break
the bank and be immediate winner, so it is important that the hub will not
be one-off, but they get the knack of construction. Once they have mastered
the basic construction, they can then start develop fancier structures on
there own.
Therefore standard carbon cross bar, but next to that mostly balsa
construction. I might laminate the adjustment screw holder along the lines
of Treger, and just show pictures how it can be done of balsa also. The big
question is the hinges, I have tried kevlar thread but cannot make it work
even myself; tubes and wires tend to be heavy. Might even consider tissue
or monokote. Also I have not decided whether to go with tissue tubes or
just balsa studs for the blade spar roots. But definitely I'll stay out of
carbon tube construction, that would require lots of Dremeling, and I do
not think that is a good way to start with.
-Tapio-
Received on Wed Jun 12 2013 - 23:22:09 CEST
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:47 CET