New Gyro Expectations

[col9]

Hi all, I've just bought and installed a CSM SL420 gyro (£50 brand new), a JR810G servo and a carbon push rod kit with tail mount for the servo to my Skyfox

All installed and working OK, on the ground anyway. I was dreading it but it was quite good to do, the setup of the gyro was a breeze (so far)

Anything to check that the manual (as good as it is) may not cover?

What should I expect when I fly it for the first time? The rudder and gyro are working the correct way left/right etc..

I had a CSM360 and a hitec 545bb servo, The tail was described by the club teacher as "very very lazy"

Is there that much difference? I notice its a million times faster from extreme to extreme on the stick but how will this effect it in the air? I know what the CSM web site says and how the servo description reads but they dont really give a real world description/expectation.

thanks
Col.

[Ade_Law]

the 810g is known to have reliability issues when used on the tail def not fit for purpose. also very inaccurate. only thing its good for is a throttle servo with a rev-lock and even then its only if you have one lying around.

it just about copes with a 30 size heli, wouldnt use it on anything bigger.

Ade

[col9]

Oh.............

[3dbasher]

I'm afraid ades right.... would go with a futaba 9254 or JR 8700g instead

[col9]

Ade's always bl00dy right

I wondered if the 810 would do it I have seen it recomended for use on mainly 30's but also 50's and 60's on a couple of sites.At 2.4kg's seemed lacking, I figured for the price (it was cheap) and as I am only really hovering at the mo it might just do it. At this rate the 545 is going back on

looked at 8700g but its PCM only and I'm PPM, the 9254 looks favorite for a next purchase.

No one has mentioned the gyro is that a bad sign..............................?

Thanks
Col.

[3dbasher]

yep best to use pcm with the 8700.... um don't mention CSM to ade.
should be ok with the 9254. not the best gyro out there but should be fine if set correctly and the models sound. is it version 4 software?

[flatspins]

Servo`s are servo`s..........
They all work on PPM
and all work on PCM

I have an 8700g on my raptor and it works very well

[Ade_Law]

actually some servos will upset recievers. or rather a lot of receivers are upset by digital servos.

for instance i have seen some hitec digital servos send a PPM rx into a gittering wreck.

the 8700 may well work on some PPM rx's but it doesnt mean it will work on all. Same goes for the 611 and digital servos generally.

Ade

PS the 401 and 9254 work very very well.

[3dbasher]

not saying it won't work on ppm but there's a reason jr say use it with pcm, something to do with pulse width and the like... not 100% sure as i'm no electronics expert

[Leebert]

actually some servos will upset recievers. or rather a lot of receivers are upset by digital servos.

for instance i have seen some hitec digital servos send a PPM rx into a gittering wreck.

the 8700 may well work on some PPM rx's but it doesnt mean it will work on all. Same goes for the 611 and digital servos generally.

Ade

PS the 401 and 9254 work very very well.

Is that the case?

I have a 138 PPM rx in my rappy and have not too long ago changed the old servos to 3152s.
Should I now look at a PCM rx as well?

[Ade_Law]

3152s dont seem to cause any issues with PPM

Ade

[Leebert]

Marvellous!!

[Steve]

I had a JR 810 on my first helicopter - a Scuttle.

It was fine for learning. It's now owned by a club mate who's got it in his Rappy 30. He's learning now and it works just fine.

It's not the best servo in the world, but it's ok, provided you are aware of its capabilities and work within its limits. I do agree though that a 9254 is far more superior, and at not much more money either.

I've also got a CSM 420 gyro somewhere in storage. Never had any bother with it. The quick set-up routine becomes errrr, routine once you've done it a couple of times. One area where this gyro is superior to the Futaba 401 is that you can set the servo limits of travel independently for left and right. With the 401, you can only set it to one value for both sides.

Sorry to speak against what the majority of people are saying here, but it's just my experience of using these products in the past.

[robgt]

While the Limit pot affects both sides of travel, the piro rate for a 401 is set using the rudder end points - so you can have two varying stops, which equates to exactly the same thing.

I do like the CSM setup procedure - very easy and straight forward.
It's a shame I haven't flown a heli that didn't wag with a csm gyro on it

Cheers,
Rob

[ChrisB]

Im sure the 810 will do for now,

I have had no issues with an 8700 or any other digi servo or gyro 611 etc on JR PPM