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With elev. trimmed for level upright flight (some Up trim), the
downlines do NOT pitch (in fact, it drops about as straight as my best
pattern plane ever has!). The trim anomaly SEEMS to be thrust-related,
but since it's a non-adjustable wing/stab setup, my options are a
little limited.
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Thanks for the response!
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<br>
---- jivey61@bellsouth.net wrote:<br>>Bob<br>>I re-read your post
and now think maybe you have negative incidence.This would cause you
to carry up elev. trim and pull to canopy on power off lines. Do the
power off down lines pull to the canopy also?<br>><br>>Jim Ivey<br>
>----- Original Message -----<br>>From: Bob Pastorello<br>>To: NSRCA
Mailing List<br>>Sent: Monday, May 22, 2006 6:53 AM<br>>Subject:
[NSRCA-discussion] Thrust Line Trimming<br>><br>><br>>Hello - I
have a BME 30% Yak, (and had a TOC/Aviation Models Yak), and both
pitch to the canopy when power is reduced in vertical climbs (also on
level cruise power deceleration, too). Elsewhere, fly well, and
doesn't exhibit bizarre incidence problems, and both needed UP elev.
trim for level upright flight.<br>><br>>ON the RCU threads on these
two, owners report needing to carry up elev trim, also, but haven't
gotten any insights on the engine thrust question.<br>><br>>I have
measured, and there is currently NO up or down thrust in the motor
referenced to centerline.<br>><br>>Could these planes actually need
some UP thrust??<br>><br>>Bob Pastorello<br>>www.rcaerobats.net<br>
>rcaerobob@cox.net<br>><br>><br>
>------------------------------------------------------------------------------
<br>><br>><br>>_______________________________________________<br>
>NSRCA-discussion mailing list<br>>NSRCA-discussion@lists.nsrca.org<br>
>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<br><br>--<br>Bob
Pastorello, El Reno, OK, USA<br>rcaerobob@cox.net<br>www.rcaerobats.net<br>
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