Wombat
I have cut *square* pieces of true A, so you end with true C grain in the other 2 perpendicular faces... and the flex is the same. Only inimal variations, related to cut variations or setup (I think).
The wood selection, the wood grain configuration for every part of the plane its very interesting, as wos pointed to us by Ben in his trip to our nats.
I understand this is critical for some parts,lets say F1D motorstick, where you need true C, so you end rolling a few paralelell medular rays (like a natural laminated material) ending in a very strong aray of natural concentric tubes.
but I see in plans there is indication for wood grain for wha will be a round prop spar... makes nosence.
Ignacio.
--- In Indoor_Construction_at_yahoogroups.com, Neil Dennis <wombatt@...> wrote:
>
> IIRC, "C" grain is stiffer - until it breaks - than "A" grain which will
> flex more with the same load. For the loads on "indoor" models dunno
> what the advantages or dis advantages would be.
>
> wombat
>
Received on Sat May 07 2011 - 09:23:38 CEST
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:46 CET