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Tomorrow is yet another day ....

Posted 04-25-2012 at 07:41 PM by Jermo

I did about 20 minutes sim time today. Tail in and nose in T patterns. Still struggling to hover at the ends on the sim.

I received my Cellpro 10s/powersupply, my updated version of glow plug remote power connection, and the Align wand starter..WOOT! now I'm broke!! (after buying almost two complete pantera's for hanger queens...).

I did some adjustments on the Pantera. I had shimmed the carb throttle arm and adjusted the endpoints..etc....fired it up in the yard and IT WENT WOT!!!.. pinched off the fuel line and started looking.... ugh.. I didn't reverse the servo direction after flipping the output arm on the carb 180 degrees!! .. ok.. reversed and re-setup all my end points for the throttle. That's now working well.. she purrs at a low idle easily now that I know to use the fuel cutoff unless actually running/starting the engine..

Had to tune the normal throttle curves up a tad to get a bobble free hover.. smoothed them out afterwards. Started looking at the Gyro..noticed the rudder endpoints were < 100... that's a no no on gy401, set them both to 150/-150, then set the limit on the gyro, max throw with no binding. I'll end up resetting it after I get rate mode working.. I upped the gain a bit and will see if that helps with the tail kick... some is not fixable due to the lower headspeed..

Meeting the guys in Munroe at Poboys field.. I hope it's a good one!!! ..charging the packs for the 500 so it should prove to be a very good day!.
Jer
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  1. Old Comment
    rcnut's Avatar
    Your rudder end-points adjusts the pirouette speed, it has nothing to do with the end travel of your linkage.
    From the GY401 manual;
    Quote:
    Move the rudder stick to the left and right and adjust
    the limit trimmer so that the servo operating angle
    does not strike the linkage. During flight, the servo will
    not operate beyond this limit and the linkage will be
    protected. If the setting is too low, the gyro performance
    will be affected.
    Per the manual, the end point adjustment is done "on" the gyro.

    The lower the end point travel, the slower the pirouette speed. At a 150, your tail will be very whippy!
    permalink
    Posted 04-26-2012 at 07:30 AM by rcnut rcnut is offline
  2. Old Comment
    Jermo's Avatar
    Quote:
    Originally Posted by rcnut View Comment
    Your rudder end-points adjusts the pirouette speed, it has nothing to do with the end travel of your linkage.
    From the GY401 manual;

    Per the manual, the end point adjustment is done "on" the gyro.

    The lower the end point travel, the slower the pirouette speed. At a 150, your tail will be very whippy!
    Thanks for the correction . It's been a while and I've forgotten more than I realize.
    Jer
    permalink
    Posted 05-10-2012 at 01:15 PM by Jermo Jermo is offline
 




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