G105 with AV590
The E-Tech G105 is probably the best availabe gyro at RCB at the moment.
I have tested it on the Hiller 450 V2 and it did a pretty good job holding the heading in a
hover.
I have tested it with the Avionic AV590 hi-speed 24g servo and the combination was good enough to hold the v2's tail
in a steady hover, with very little drift, which is acceptable with this servo not being Digital
and in reality a hig-speed analog servo. Although the servo specs say it's Speed at 4.6v is (sec/60°): 0.08,
i'm not able to test that.
The G105 is well built and sits tight inside its casing, which is good. There was very little or no servo-chatter
at all on gyro initialization. The same servo was always having trouble to find it's center with the
Avionic - AV401 AVCS head lock gyro.
I'm using about 40% HH gain on the Tx, 30% on Delay-pot and 60 on Limit-pot for the G105. The delay can help the slower
analog servo catchup with the gyros very quick and tiny corrections, but you have to play a bit to get the setting correct
to suit your servo and flying style. Any delay will play on the crispiness of your pirouettes. For a a digital servo
the delay is usually set to zero.
Even the little drift i'm seeing is probably due to some vibrations/mechanical-centering in Rate-mode not being all that
accurate.
I'd recommed this gyro for all 450 class kits. It's way better than the AV401 gyro.
Hope RCB will stock some digital servos soon so I can test the G105 full potential.
- Satish
From:
Satish Kumar
|
Created on:
9/26/2011 4:27 PM
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