Re: [ULF-1] rib weight

From: Member 72
Date: 2012-11-23 16:10 UTC
Message: #0421

Hi Member 4,

I just finished and weighed all the ribs I have built so far for the horizontal stab. and elevator.  Here are some weights.

Horizontal Stab.
Rib #           Mass (g)
[phone]
[phone].1
10              16.3

Elevator
Rib #           Mass (g)
[phone]
[phone].5
10              11.8 

All these ribs were constructed out of 1/2" Dow blue foam house insulation board, capped on both sides with 3/32" thick by 1/2" wide spruce caps strips glued on with T-88 epoxy.

I would be very interested in seeing how these foam ribs compare in weight to the plans stick-built ribs.  We already have determined they are stronger.  But, are they lighter??

Member 72
S.N. 343 E

---- Member 74 <[email]> wrote: 
> could one (or more) of you that has some ribs built weigh a couple and report the weight?
> thank you,
> Member 4
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