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HelicopterRadio - Servo - Gyro - Gov - Batt › CSM Rev-Lock problems
10-05-2005 09:10 PM  12 years agoPost 21
RussD

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UK

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Hi Tosh,

Great to hear a digital servo and replacing the TT Muflfler with a Zimmermann provided the solution and Revlock is a great place to use make use of well worn cyclic servos

Hi tomi2004,

A digital servo of 0.16 is plenty fast enough for Revlock. It' the ability to select the digital option that makes all the difference. Whats your engine set-up?

Russ.

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10-05-2005 09:13 PM  12 years agoPost 22
zoom boy

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N.E. Lincolnshire UK

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Zimmerman pipes are great!

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10-05-2005 09:16 PM  12 years agoPost 23
tomi2004

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west​yorkshire,England

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Hi russD

os hyper with 20% nitro, just bought the jr pcm 9x v2 been having a real stressful time trying to understand the manual
At the moment im using a digital futaba 9202 on the throttle its 0.22secs and its doing hunting thing????

So hopefully if i get a slighly faster servo it should be spot on (should'nt it)

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10-05-2005 09:22 PM  12 years agoPost 24
TOSH

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UK.Peterborough

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Hi tomi.

The 9202 is not a digital servo,

Flybars. Who needs `em.

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10-05-2005 09:26 PM  12 years agoPost 25
RussD

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UK

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Hi tomi2004,
digital futaba 9202
I just double checked the Futab Web-site to make sure and the 9202 is not listed as a digital servo! If you are running in digital mode with this servo... it will cause all sorts of problems and the servo could end being damaged.

Can you re-check which mode you have Revlock set to for this servo?

RussD.

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10-05-2005 09:36 PM  12 years agoPost 26
tomi2004

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west​yorkshire,England

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Ups sorry boys

That servo is what i had previous
Start again the servo im using is the (non-digital jr 591)
so from what i've been reading that servo is too slow for the revlock???

Or one more thing is your headspeed chart well out

Thanks

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10-05-2005 09:53 PM  12 years agoPost 27
RussD

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UK

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Hi tomi2004,

So that's a JR 591 set to non-digital mode on Revlock yes? The reason I am bugging ya on the 'digital mode' is that if you use a non-digital servo in digital mode you will get hunting probs and a very hot servo!

No prob's on speed of the JR 591 as Revlock's very fast control response dictates that it does not need a fast servo. You should be able to achieve good results on the 591, but it will work even better with a digital servo / set-to digital mode. What muffler are you running on the Hyper?

The speed chart is very accurate, make sure you are in the correct RPM range or yes it will be well-out

RussD.

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10-05-2005 10:03 PM  12 years agoPost 28
tomi2004

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west​yorkshire,England

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Hi russD

im running a zimmerman pipe had one from the very start
That chart thing, i was flying at the weekend and someone said to me your headspeed is way too high, me thinking that all ive done is set the revlock to the chart and away we go..................so............... we got the tacho out,and the headspeed was about 2250
so what the hell went wrong......

Been doing some reading on the revlock, my engine is setup nichly without using the govenor its smooth and only had about 5 gals through her.......

All i've been doing with the chart is setting to the desired lights is this ok??

Cheers

Tom

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10-05-2005 10:21 PM  12 years agoPost 29
carcrasher

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east coast

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A friend had the same problem. No matter what he did he couldn't get this thing to work right. I don't get the chart/light thing. isn't it easier to just use a tach to set the headspeed?

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10-05-2005 10:32 PM  12 years agoPost 30
zoom boy

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N.E. Lincolnshire UK

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Basically you set the RPM range you are aiming for (the light that stays on when the stick is down) then you adjust the ATV to turn on the other lights, the patern of lights corresponds to a certain engine RPM.

You have to know what rotor RPM you want, then multiply that by the gear ratio between the rotor and the engine to find the correct target engine RPM before anything else though.

Be careful to make sure you are in the right speed range first.

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10-06-2005 04:00 PM  12 years agoPost 31
TOSH

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UK.Peterborough

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Yup,l did same as zoom boy then we tached it.Near as we could tell it was about 5rpm out.Think l can live with that

Flybars. Who needs `em.

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10-06-2005 05:57 PM  12 years agoPost 32
Mike557

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Northumberland​England

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Hi Russ

Thanks for taking the time out to help with the dreaded hunt. Iam sorry to say that in my case lost patients and jumped ship.
However cheers anyway.

Respects
Mike

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10-06-2005 11:14 PM  12 years agoPost 33
RussD

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UK

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Hi tomi2004

The light's are generally very close to the 5-Rpm Tosh qouted... but you do have to do the Gear ratio calculation correctly to work back from desired head-speed to work out the engine rpm you are looking for.
Generally, the use of a sky-tach is very accurate, quick and easy... but the Revlock engine RPM indicator sequence was added to help those who do not have access to a sky-tach and whom had no desire to purchase one.

Have you had a chance to check wether your running that non-digital servo in 'digital mode'?


Hi Mike557,

No probs on jumping ship. Due to so many variants invloved with RC helis, no one 'high-performance' product will suit every single application. The good old popular saying of 'It works for me'.... regardless of what it actually is that works, is very true to form

RussD.

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10-31-2009 07:39 PM  8 years agoPost 34
400GreyBike

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Winchester, Hants,​UK

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Hi all,

Also just started experiencing problems and hopefully the previous info will help point out the issue. Recently had a "landing" that did the normal damage i.e. main and tail shafts, blades, paddle, fly-bar, boom etc.

All back together now although I have moved from TT 620mm mains to Maverikk 620mm. Now in FFF the engine hunts, resulting in the tail oscilating etc etc. Nothing else changed, throttle curve the same, same pitch angles, no RevLock setting changes etc.

I am assuming that the change in main blades (Ow and tail blades, manufacturer only, running 92mm) that there's either more or less friction. Engine is dialled in in manual mode (no Gov in manual, 1850 in Idle-up 1 & 2).

The only other thing that I have changed is the Collective, Aileron and Elevator servos from cheap digital imports to 3152s (I only sport fly). Tail remains a 9254 on a 401 and the throttle is sitting on a trusty old 3001 (I know, I know I'll change it).

Weather hasn't drastically changed and therefore the mixture should be close enough (went 7 each way in total without change!!)

From a tried and tested machine (Rap 50 Titan) I now have something that isn't confidence inspiring. Any suggestions most welcome :-)

Dave

Dave G

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07-23-2011 09:48 PM  6 years agoPost 35
datidun

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N Ireland

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Revlock 10

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HelicopterRadio - Servo - Gyro - Gov - Batt › CSM Rev-Lock problems
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