[NSRCA-discussion] triangulation trimming

[adriancwong at earthlink.net]

Bryan,

What cause the plane to pull to the belly on one rudder, and to the canopy on the other rudder during knife edge.

Thx,

Adrian

-----Original Message-----
>From: shinden1 at cox.net
>Sent: Mar 16, 2008 7:17 PM
>To: NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>
>Subject: Re: [NSRCA-discussion] triangulation trimming
>
>Lance you need to find out exactly where the wing  inc . is. 
>I think if you move your c/g back a little it will help take some of the up trim out But you prob need more pos inc, in the wing so we need to know where you are at right now to determine exactly where to go 
>Bryan
>---- Lance Van Nostrand <patterndude at tx.rr.com> wrote: 
>> Bryan,
>> 
>> The discussion list moves faster than I can try this stuff out.  Too bad I 
>> have to work...
>> 
>> I first only moved my CG forward significantly and have improved overall 
>> tracking.  It was windy Saturday and wind penetration were good.  Bryan's 
>> suggestion was correct on CG movement to make this improvement.  However 
>> with the forward CG (and resultant uptrim)  it pulls to the canopy slightly 
>> on downlines.  At this point I noticed that during inverted flight, rudder 
>> input caused a pull to the belly (plane rose).  This was weird.  I then 
>> raised the incidence 2 turns and it fixed the inverted flight problem but it 
>> seemed to make the canopy pull worse.  Interestingly, KE flight was not 
>> noticeably affected.
>> 
>> The other affect is that inverted 45 downlines drop toward earth faster than 
>> upright 45s (which track nicely).  Before this change, both 45s were fine.
>> 
>> Is this the expectation?
>> 
>> --Lance 
>> 
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