Q-Performance group: http://groups.yahoo.com/group/Q-Performance/ David J. Gall

Dave, Mine WAS a considered comment. Why do you use my post as your jumping-off point? John tenHave's post came much closer to a "scolding" referring to Larry's advice as "half-assed" and such, but I

Larry, Don't bother! To quote Rutan: "Simplicate and add lightness. If you're considering adding something to your airplane, throw it up in the air. If is comes down, it's TOO HEAVY -- leave it out."

David, The green/tan stuff is unsuitable for wing cores. Yes, it is "garden variety" foam -- literally! It is very much the same stuff florists use for flower arrangements. It comes apart in your hand

Right on, Jay. Just like wood. There's also a question of stabilization and substrate strength in a composite sandwich structure. It is possible (but NOT likely in this case) that the added thickness

Sam, You probably answered your own question. Good work! For a "symmetrical" I-beam type spar under uniform loading, the compressive stress in the top cap is equal to the tensile stress in the bottom

I should elaborate: I need original, uncut factory LS(1) paper templates. I just "know" that somebody out there has a set to lend, share, sell, whatever.... David J. Gall

I need LS(1) templates. David J. Gall

Yes, that's it. My domain management service has apparently erased my URL forwarding orders.... :-(

Stoopid computer appended a period, address should have been: http://www.QuickieSource.com Sorry, David J. Gall

Larry, Look here for most of the files: http://groups.yahoo.com/group/Q-LIST/files/ If you can't access the files area, you didn't "sign up" properly for this list. If all else fails, contact the grou

Larry, Did you check and positively set your wheel camber prior to making high-speed taxi/flight attempts? I ask because your description of loss of directional control is consistent with a directiona

David, You can go either way. The Q200 is a modified Q2. Some people upgraded during or after building a Q2, some bought the Q200 from the outset. You'll need the plans and the carbon spars for the Q2

Greg, Sorry, no, I don't recall which issue and I don't have access to my archive to look it up, either. (drat!) David J. Gall

Remember Marc Waddelow's engineering analysis of the Q2 canard in an early Q-Talk. He seemed to show that there is no margin. David J. Gall

[WARNING: LONG POST] [WARNING: NOT PROOF-READ or EDITED] Peter, Excellent questions you pose. The "backside of the power curve" is most easily described by describing the whole "power curve," first, t

Ron, The following is just my opinion, not a result of experiment, experience, or consultation with anyone else: I think you have created a potentially unsafe condition or, at best, a short-lived part

Mike, A more heavily loaded canard due to a more-forward CG range (heavier engine) would need more incidence, not less, would result in increased drag, and would cause higher stall, climb, best-glide,

Pat, I agree with you 100%. The hard part is meeting the "loaded to gross, within the W&B limit" criterion. There comes a point where you can't put enough weight in the tail to balance the extra (100