CSM Rev Lock 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 overspeed 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 overspeed 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 overspeed 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

[r/c_outlaw]

i just set up my revlock and all installed easy.....only thing is i set it up for channel 7 and set the rates at 20 and 40 persent...that is ok i think..as i engaged the revlock it armed and i kept uping the atv till i got the first light on mode A.... then i switched to mode B and ran the trim up till i got a constant second light ..dont this give me 2 controled rpm settings mode A an B??....i am running the stock 7.15 gears and a 9zhp....my question is if i get the first light what is my head speed going to be...i just dont want to engage this thing and have it run away real fast..so i only set it up to give me a first light....any help with set up of a revlock and a 9zhp would be great...

[cwbonner]

You need to set the ENGINE rpm range for both modes. I don't have my instructions here at work, but as I recall, with the throttle at low position, you press the set button to cycle through the RPM ranges (LED's will light up alternately as you do this), and then move the throttle to high and set the offset value with the ATV/mix you are using to control the gov. So for example if you want a 1700 headspeed at an 8.45 ratio, you would need 14,365 engine RPM. You would set the range that covers this, then adjust the govenor signal to adjust the RPM within the range you have chosen. The LED's will light up to show you how many RPM you are above the bottom point in the range you have selected. Don't have a 9z, so can't really be more specific on the radio side, but that is how you set the revlock.

[NolanManley]

http://www.rcmodels.org/csm/Revlock.htm

You can DL the instructions at the link above in PDF format. I have ZERO experiance with this unit but hope the link will help. ;) I would assume you would control the settings with the ATV feature of the channel and flight MODEs your in on your 9Z which is how I do my Gyro and GV-1 on mine.

[psawya]

You aren't just kidding when you say the "wag" can be unnerving. I thought the heli was coming apart. Then to top it off, I couldn't get it to come off the gov. Seems I had the idle set wrong also. Got it all sorted out now and you are 100% right, this thing works great. I am very happy with it.

Pete

[r/c_outlaw]

i think i got my revlock set up right now....the spool up is kinda like gooseing the throtle and pulling back severl times till the rpm is up to speed...after that this thing hums a tune so sweet.....one question i got...is there a way to only have this thing go armed in idle1 instead of comming on with the stick position...any help would be great... :?:

[bigrcr]

Wild Man, what transmitter/receiver are you using?

[r/c_outlaw]

the best....FUTABA...:).....the 9zhp wcII and a dp 149 receiver

[r/c_outlaw]

John...still need that help here bud...any way to turn the revlock on or off with a switch useing the 9ZHP wcII and a 9 channel reciever???

[WillJames]

Yes there is. Use Ch9 for the on off and channel 7 for the speeds. I use switch C for the speeds and switch D for on/off.

[r/c_outlaw]

is it in the instuction manual...and i dont see another lead for hooking up the revlock to the channel 9...might u help me by explaining it somewhat...i am useing the revlock for the stator gator...not sure if it is diffrent from the glow version...thanks

[bigrcr]

I use the governor function set-up in my JR 9303 transmitter. In this mode I set up an output of less than 10%(mode A or B light flashing- dependent on which you are using) for off condition in any flight condition that I do not want the governor engaged. I have my governor off in normal flight mode for needle setting reasons.

I set an output % that lights up the RevLock RPM LED's to reflect the desired motor RPM I desire in each flight mode that I want the governor to operate. This can be in either A or B mode on the RevLock. In this manner, you can have an individual RPM for each flight mode if you wish. In other words you could have multiple A and B settings dependent on the % output of the flight mode chosen.

example: If you use 4 idle ups and 1 normal flight mode, you could assign less than 10% in normal flight mode for off. You could assign RevLock mode A at 48% output for one RPM in idle-up 1. You could have RevLock mode A set at 52% output for a higher RPM in idle-up 2. You could have RevLock mode B set at 49% output for a RPM in idle-up 3 and RevLock mode B set at 54% output for a higher RPM in idle-up 4 and so on.......

I understand you asked how to use a ON/OFF and flight modes and it can be done. I don't have mine set up that way nor do I use Futaba or know how to set up the Futaba 9 radios. Will may have answered you above.

[r/c_outlaw]

thanks for the info...yes it is helpfull... when my revlock engages it seams to spool up quiet fast almost to the point it folds the blades back for a time or two...and also in flight when the chopper is inverted and on a mild decent its trys sounds like its trying to spool up again...it is about half stick when this happens...we have the gain almost to its low limites with out much change in spool up or flight carateristics???? any help would be nice or point me to a forum that has allready talked about this if i have missed out...thanks :arggg:

[bigrcr]

If you are using a gas motor make sure to use a slow high quality servo. A fast servo will cause you a lot of grief, some as you describe.

Later.

[r/c_outlaw]

John i am useing a 3151 digital servo....its a 0.21sec/60 deg. and 43 oz of torque.... is there a better choice or a carb set up...i followed your setup vidio nearly to a tee....even the rubber ca glue on the screws...man O man is that glue nice too...thanks for all the great tips in there...now if i can get a tail shaft to hold together and my revlock squard away i will be sitting sweet with a kick ass spectra...thanks John.... please if you have any more advice you can give i would love to try anything to get this thing purring :noteworthy

[Greg Alderman]

Man...as John knows...I was fighting my RevLock in my Intrepid gasser until I replaced the 9252 servo with a cheap 3101 standard servo running in "analog" mode and all my probelms went away! the stock G26 just purrs now!

:noteworthy Thanks John!

[r/c_outlaw]

i stated above what i am useing and i went though the setup and still have problems...I still could use some help....maby it didnt go into digital mode??? i dont know.....but the speed is under what is recomended...so it should be slow enought...i cant think of anything to do diffrent...i am open to any ideal ..please i need to get this sorted out for when i get my parts to rebuild...any help please... :arggg:

[Mille aka Fredrik]

A question,
Have just installed RevLock with StatorGator. But I'm little confuesed about the engagement of it. When I put my throttle trim to the middle, the RevLock shows that it has been activated on the RPM..... Does this mean that if I try to start it with throttle trim in the middle, it will spool up to the set RPM?


/Fredrik

[bigrcr]

Most likely. In your set-up you should have given the idle position. This would have been with the trim tab turned up to idle position with the throttle stick at low position. If you set it up at CUT throttle (low stick and low trim), when you pull the trim to mid position, it may engage the governor. Go through your set-up again and set that up.


Later,

[Mille aka Fredrik]

You sort out the problem for me John :wink:
Thanks

/Fredrik

[patet]

Hi all,

Just wondering if it is the same for you.
I have set up the revlock with statorgator sensor on my spectra and I was surprise that I had to turn the sensitivity to minimum.
Today I tried it on my Huge500 with another revlock and statorgator sensor (this case it is the G2D instead of GGS23) and again I had to turn the sensitivity to min.
In some times I still have my throttle "wag".
I use the S3001 low cost servo (on huge500). I know it is not really good for a gasser (on my Spectra I use the S9252).
What about you?

Patrick

[bigrcr]

Minimum sensitivity seems to be the norm. The gasser will do just fine with a slow servo. If you still get some throttle wag, make sure that you don't have the needles too lean.

Later,