Malorie
Elite Veteran
Location: Paw squared, MI
| I know Bill has probably coverd this somewhere before, but I figured I would share.
After slamming my gasser around for a while, I got tired of overspeeding the head at times. I'm running the GV1 with the Stator Gator sensor. It was most noticeable during big push-outs to inverted where my headspeed would come up to around 1900 to 2000. I would need to either load the rotor system again or hover for 5 or 10 seconds for it to come back down.
I decided to try an experiment that seems to have really worked out nice.
My thinking was that, unlike a glow machine, the butterfly valve carb on the gas machines is not linear. It tends to have most of it's change at a nearly closed position and very little change from about half way open to full open. I figured the GV1 was having trouble with the minute adjustments required to maintain a good headspeed as I unloaded the rotor system.
So I changed my throttle linkage to include as much mechanical expo as I could get. This would give the GV1 better resolution at lower throttle settings and less at higher settings which in effect made the throttle much more linear.
During test flying the setup, I tried my best to overspeed the head. The GV1 was right on top of any change. The worst it got was a minor overspeed during big push-outs to inverted. The GV1 would almost imediately fix the overspeed though, very much like my glow machine.
This also changed my throttle curves from a "U" shape to a "V" shape which tells me that the throttle is now very linear.
Try it out, you'll like it. 
Malorie
Life's a journey, NOT a destination. |
. Please do not try to explain further, I am definitely hopeless 
. From the picture above for example, how can the throttle arm move slower at idle and faster at full throttle (isn't a servo speed constant?) is beyond me.
