Does this work when one is doing an inverted 45 as well? LOL<br><br>
<div class="gmail_quote">On Tue, Mar 11, 2008 at 1:27 PM, <<a href="mailto:shinden1@cox.net">shinden1@cox.net</a>> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Now,, we have the Harrison trim method <G><br>Bryan<br>
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<div class="Wj3C7c">---- "Dr. Mike Harrison" <<a href="mailto:drmikedds@sbcglobal.net">drmikedds@sbcglobal.net</a>> wrote:<br>> Chad, hold a little up elevator!<br>> ----- Original Message -----<br>
> From: "Chad Northeast" <<a href="mailto:chadnortheast@shaw.ca">chadnortheast@shaw.ca</a>><br>> To: "NSRCA Mailing List" <<a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>><br>
> Sent: Monday, March 10, 2008 4:57 PM<br>> Subject: Re: [NSRCA-discussion] the joy of trim<br>><br>><br>> > Ok you trim masters, here is a tricky one for you.<br>> ><br>> > Bryan and I have been through this a bit last year but I ran out of time<br>
> > before the Worlds to fix it and just flew with what I had.<br>> ><br>> > On my Twister I have this pesky problem, the setup is like so,<br>> ><br>> > wing = 1/2+ Bryans suggestion and I like it<br>
> > stab = 0<br>> > motor = factory claims 2.5 down, have not measured but could if asked, I<br>> > have added more to cure a problem see below<br>> > CG = has been anywhere from 275 to 300mm from TE mostly with the same<br>
> > result. Currently its around 285-290 and it feels good at that point. 45<br>> > ups inverted track almost hands off if under enough power.<br>> ><br>> > Symptoms,<br>> ><br>> > Plane flies well, at this setup I need 0 mix right rudder to ele in knife,<br>
> > and about 2% up ele with left rudder in knife,<br>> > about 1/32" down elevator with idle to fix a downline<br>> > Added downthrust as the increase in wing inc. and more forward CG really<br>> > helped the mix in knife and made rollers easier, but forced an increase in<br>
> > downthrust as the plane started pulling to the canopy on uplines.<br>> > Downline mix remained the same.<br>> ><br>> > The big problem I cannot resolve is this, a 45 deg down upright (motor at<br>
> > idle) the plane pitches to the belly and will not track on its own for any<br>> > length of time. If I switch the idle-down mix off its rock solid on that<br>> > line.<br>> ><br>> > I am open to all suggestions now that I have a bit of time to play with<br>
> > this, I hope Bryan chimes in some more as I would like to continue where<br>> > we left off last fall. If you suggest something I will do my best to give<br>> > it a go and let you know how it works (provided it doesn't snow!)<br>
> ><br>> > The plane is basically super locked in with this setup, except for the<br>> > silly 45 down upright, which is a problem in cubans and such.<br>> ><br>> > Comments and thoughts from the masters are most appreciated :) I consider<br>
> > myself one of the, cant really trim that well but can fly through it just<br>> > fine types :)<br>> ><br>> > Chad<br>> ><br>> > _______________________________________________<br>> > NSRCA-discussion mailing list<br>
> > <a href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><br>> > <a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br>
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