Re: Q2 LS1 Carbon spar?
Wether you use expanding urethane, stacked foam or artichoke hearts to make an airfoil make sure you STATIC TEST IT and not half-assed but like the professionals do.toggle quoted messageShow quoted text
From: Mike Perry dmperry1012@... [Q-LIST]
To: Q-LIST <Q-LIST@...>
Sent: Sat, Sep 6, 2014 10:52 pm
Subject: Re: [Q-LIST] Q2 LS1 Carbon spar?
Your advice to contact some of the other people in the QBA is excellent; actually, I did just that. A few years ago I went to Livermore, talked to Bob Farnum and Barry Weber and we came up with a plan for reconstruction. But then I ran into my own anxieties.
The builder of the project I took over built and flew a RV-4 and an ultralight; however he never completed a composite project and I can no longer talk to him (in very poor health living in another state). The builder's log consists mainly of photographs which tell me a lot -- but don't tell me some critical factors. I remember the cause of Bob McFarland's Fatality: wing assembled with the wrong materials (expanding urethane) leading to delamination. I think there was another wing failure involving a foam core assembled from several pieces of foam stacked together. Not sure I can complete this project -- Still thinking about it.
The advice about the Dragonfly spar is excellent. I will see about getting a set of plans. On the other hand, maybe I should just get the Quickie plans and start over, build the single seater.
On 9/5/2014 7:43 AM, JMasal@... [Q-LIST] wrote: