I've got 3 new LPP wings on the board using a stacked pair of .020 carbon rods each for the LE and TE spars. The rods are tacked together in a few places with CA and then glued full length with Duco. Sanding a slight taper into the ends brings them down to .25 grams each. This is really easy to do and results in indestructible spars that all have the same deflection. They weigh less and are stiffer than the .030 tubes I've used in the past.
----- Original Message -----
From: Mark F1diddler
To: Indoor_Construction_at_yahoogroups.com
Sent: Tuesday, March 30, 2010 3:24 PM
Subject: [Indoor_Construction] Re: Pro-Am
--- In Indoor_Construction_at_yahoogroups.com, "Max" <flyezb_at_...> wrote:
>
> Build em slo to make em fly slow!
> Probably a good idea not to put boron in these.
Ya, at these (heavy) weights, boron prolly amounts to only an insignificant drag reduction (due to slightly smaller sizes needed.) But considering the additional fragility boron brings, probably not worth it. Yet I like boron in my OPP bipe wing, maybe only due to the skinnier "look."
Mark F1diddler
Received on Tue Mar 30 2010 - 12:56:10 CEST
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:46 CET