[NSRCA-discussion] Thrust Line Trimming

[Bob Pastorello]

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.

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.

I have measured, and there is currently NO up or down thrust in the motor referenced to centerline.

Could these planes actually need some UP thrust??

Bob Pastorello
www.rcaerobats.net
rcaerobob at cox.net
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