[NSRCA-discussion] Trimming Question

[Anthony Romano]

If it feels good leave it alone. I have run more down than up in most of my 
planes and a little extra down expo. My V2.2 has about 3 to 5 degrees more 
push than pull and about as much difference in expo. It does have a little 
positive in the stab and 1/4 pos in the wings with the CG just in front of 
the tube.
My twisted rational is with positive in the wing and a reasonable cg you 
will always need a little push for level inverted flight. So for a snap or 
sharp corner to match upright you will need a little extra throw inverted 
since you are already using some for straight and level.

Hope that helps

Anthony


>From: "Mike Hester" <kerlock at comcast.net>
>Reply-To: NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>
>To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
>Subject: Re: [NSRCA-discussion] Trimming Question
>Date: Wed, 4 Jul 2007 16:29:17 -0400
>
>I usually carry a bit more down travel than up. That's normal. Twice the 
>amount of throw....hmm that doesn't sound right does it?
>
>I'd have to be with the plane to see if you really have a problem or if the 
>set up is just kinda whacky. How much expo are you running both ways?
>
>Also take a measurement of the stab incidence, or as well as you can. It 
>should be around zero. Also look at the alignment of the elevator to the 
>stab itself and make sure you're not carrying any large amount of trim, 
>because that can make things wierd.
>
>I have had more than a few people tell me it trims out better with a hair 
>of positive incidence in the stab, in fact I carried some for a while. It's 
>hard to guess if you don't have an exact reference to go from.
>
>-Mike
>
>   ----- Original Message -----
>   From: Rick Rosinski
>   To: nsrca-discussion at lists.nsrca.org
>   Sent: Wednesday, July 04, 2007 11:26 AM
>   Subject: [NSRCA-discussion] Trimming Question
>
>
>   I have a trimming question for you guys. A couple of days ago I was 
>checking the amount of control throws on my first Black Magic V2 so that 
>when I set up my backup plane I'd have a ballpark setting to start with. 
>The ailerons and rudder were about what I expected, but the elevator was 5 
>degrees of up throw and 10 degrees of down throw. The wing incidence is set 
>per the plans and the CG is at the leading edge of the wing tube with the 
>wings off. The airplane has the same feel when I add up or down elevator. 
>Inverted flight requires a little down elevator. Basically the airplane 
>feels just right.
>
>   I'm wondering what you guys think I should do to correct the 
>differential in up and down elevator throw? I was thinking that I may have 
>a little too much positive incidence in the stab. Any suggestions?
>
>   Rick
>
>
>
>------------------------------------------------------------------------------
>
>
>   _______________________________________________
>   NSRCA-discussion mailing list
>   NSRCA-discussion at lists.nsrca.org
>   http://lists.nsrca.org/mailman/listinfo/nsrca-discussion


>_______________________________________________
>NSRCA-discussion mailing list
>NSRCA-discussion at lists.nsrca.org
>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion

_________________________________________________________________
http://newlivehotmail.com