ORIGINAL: Dave Kelly
ORIGINAL: jfetter
ORIGINAL: Dave Kelly
<edited>
I need to hold a little down elevator in inverted flight. Does anyone else have this? best wishes
Dave
Dave,
Yes is the short answer, every plane I have needs negative push to hold level while inverted, including my C-ARF 2M pattern plane. interestingly enough someone told me this was wrong, they said a good plane trimmed out properly will go inverted without any push. Quite frankly I never knew if that was right or wrong, seemed a fair enough argument to make but nothing I've flown will do that.
While at SEFF this year I had the chance to talk to QuiQue Somenzini, I asked him if this was true and he said absolutely not, He said sure, you can likely trim a plane out so that it flies the same right-side up as well as inverted but you'll end up with a poor flying (and tracking) plane. he said every plane needs a little push when inverted to hold its line and you should spend the time trimming the plane to track properly...
Jack
Hi Jack, Funny after speaking with my old uncle who flew pattern in the 70's he likes his models to fly down in straight and level (holding up elevator in normal flight) and then when inverted they fly without input..Everyones different in this respect, i suppose without wing incidence adjusters Mr Sebart can't please everyone so he went with what he normally flies....but if its good enough for Quique i will need to improve my finger control!!!
I had another two flights today (thats 3 and 4 on the ship) the wing tip balance has made vertical manouveres better but i still get a slight pull in uplines to the left...(requires a smidge of right rudder)
only 2500mah pulled from both EVOLITE 4270 V2 packs in 8.5 minutes....
Does anyone else get a resonating buzz when they apply rudder in knife edge flight?
brgds
Dave
p.s A smidge is a very small quantity (of anything) in Scotland!!!!
Hi Dave . . We have "smidges" here in Oz too
No "buzz" in KE on mine. Check that you don't have something loose (cowl, trim, covering, canopy, etc.) that may be effected by airflow in the KE position.
The lateral balance actually has minimal effect in up and down lines. This is surface trim (incidences, etc.) and thrust angles. For lateral balance, first check it on the ground, then pull tight inside and outside loops (in the air
). Check for a dropping of a wing, check which wing it is and if it's alway the same wing . . add a little tip weight to the opposite wing (or remove it if you had added too much on the ground). PS. this has to be done on calm conditions or at least fly the loops directly into the wind (calm is always better for this stuff).
Mine was pretty good, and didn't need any tip weight. The thrust angle could do with a slight change, but at the moment I have just mixed it out.
Cheers, JB