RevLock/Stator Gator results

[bigrcr]

The RevLock had performed wonderfully in my Spectra-G!;)

No flight condition that I have put the model in has resulted in an over-speed using the RevLock. I even put the model in a high speed dive in FFF then brought collective through center with NO RPM gain that could be detected!!

I recently chased a problem where I had over-speed and erratic running while off of the RevLock governor. It seemed that my throttle curves were constantly changing. As soon as I enabled the RevLock, the over-speed would go away. I finally had a situation (while trying to find out what was wrong) when the RPM hung to a very high idle in HOLD mode.:confused: :confused: :confused: :confused:

I found that my throttle servo case was broken and the ears broken off from a previous incident that I had not discovered. The servo was still "pinched" between it's mounting blocks within the frames so as to hide the problem. The servo appeared to be fine until I looked at it very closely.

I changed out the servo and set the RevLock back up and everything is once again great.

This means that the RevLock was not only doing it's job but it was also compensating for a servo that was moving around in the frames!! Beat that!

The only problems that I have seen are from pilots not getting the set-up correct. Once the set-up is corrected (done per instructions) their problems go away.

One observation: If the gain is too high, the throttle will "wag" much the same as a gyro with too high a gain will do. Having the throttle "wag" upon spool up is very unnerving the first time it happens!!Turning the gain pot down will make this issue go away.
:D

[Greg Alderman]

Well after just about giving up and pulling my RevLock out of my Intrepid Gasser I had success this weekend at Chattanooga!

Come to find out it seems that all my Revlock problems were coming from using a Futaba 9252 digital servo for my throttle servo.

My problem was on decent I would get the WAAWAAWAAWAA sound...no matter what I did to the RevLock sensitivity or mixture settings..well...buying a $20 Futaba 3001 standard servo from RAY'S HELISOURCE solved the problem! As soon as I changed to the slow standard servo all my problems went away and te RevLock performed perfectly!

Very cool to get rid of this problem!

[bigrcr]

:wink:

[bigrcr]

Yes. For the gas models it seems that the feedback loop in the Revlock is too quick using a digital and/or high speed servo. I found that a slow, high quality servo works best. I still run the gain pot as low as it can go now, but this is not a bad thing. Just because the pot is all of the way down does not mean that the governor is not as "active". As I understand it, the sensitivity pot will tune down/up the sensitivity of the "feedback" loop (lack of better description :wink: ) and this does not affect the way the governor works otherwise. I use the pot to get rid of throttle "wag" only. When I ran a faster servo than I currently do, the pot would go as low as it could and the RevLock would still "wag" the throttle. When I moved to a slower servo, at first I ran a higher pot setting and then backed it off to 0% as the tendency to "wag" the throttle occurred. Colin Mill wanted to know this info to see if he could change settings to allow this pot range to better match servo speed as I understand.

[wingtip]

i just ordered mine so after reading your posts, would it be ok to just go ahead and turn the sens. to 0%??

[bigrcr]

Yes.