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Home✈️Aircraft🚁Helicoptere-AlignOther › Which rx? - UK
09-10-2006 05:59 PM  14 years ago
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Leebert

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Surrey - UK

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Which rx? - UK
Title says it all really...

I currently have a Schluze 835 alpha in my T-Rex 450 SE which seems to be poorly.

I'm going to buy a new rx but which one...?
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09-10-2006 06:22 PM  14 years ago
TRex888

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Monmouth, UK

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146i
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09-10-2006 06:38 PM  14 years ago
Leebert

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What make is that?
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09-10-2006 06:39 PM  14 years ago
Thomashome

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West Sussex UK

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Which Radio do you use?

I used a JR PCM770 in my old 450 which worked well, that was till the swash fell apart

I know quite a few use the Schulze and like them - what problems are you having with it?
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09-10-2006 07:48 PM  14 years ago
str8den

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NE U.K

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i'm using a sanwa 611 in my ark/xl hybrid, and an align RX in my C/F rex - no probs so far, but i am looking at getting some 'nicer' recievers. the hitec electron6 is one on my list and it seems the title 'glitch magnet' is mostly from the US on their 72mhz; where as i think we must have it lucky on 35megz.
i don't mind staying with ppm/fm as all has been good on mine, so i have been thinking of the JR's fm recievers as there is a couple i like the look of.
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09-10-2006 07:58 PM  14 years ago
TRex888

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09-10-2006 07:59 PM  14 years ago
phil p

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Get a Micron radio control RX with a DSP decoder http://www.micronradiocontrol.co.uk/ my 'rex never glitches with one, has all the features of PCM (failsafe etc) all for less then £30 !
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09-11-2006 07:32 AM  14 years ago
Leebert

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Hi
I use a Futaba T7C.
The problem I am having is, during a range test with blades removed, I can only get 10 short steps away before the servos move by themselves and then by 20 / 30 steps away the motor starts and stops by itself. With my Raptor I can go about five times the distance without so much as a jitter. I have tried channels 56, 77 and 86. All the same.
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09-11-2006 07:36 AM  14 years ago
Thomashome

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West Sussex UK

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Go for a PCM receiver, expect you have one on the Raptor - I have the same issue with my slope foamy but it flys ok so I don't worry - heli is a little different.
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09-11-2006 07:42 AM  14 years ago
nivlek

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Norfolk England

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If you have a JR tx , then your best bet is the RS77S synthesised SPCM receiver at under £40 and no crystal required . If you don't have a JR tx , buy one . At the end of the day , it gets dark .
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09-11-2006 06:56 PM  14 years ago
Leebert

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Hi all
Update!!

Just tried a range test (antenna down) with a Futaba 138 PPM rx and it wasn't quite as bad but when it did glitch it glitched big time and the tail span round and it broke both tail blades.
I'm not having much luck...

Will PCM cure this or just hide it?

Also, as if new tail blades were not enough, the Align 430 motor literally fell apart! The top stayed put and the bottom bit fell off!

A bad testing session
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09-11-2006 08:51 PM  14 years ago
Thomashome

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West Sussex UK

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Align motors have a reputation for falling apart, mine did the same after a hard landing - I used red locktight, worked a treat.

If you've tried two receivers and one of the was a Schulze then I'd look for another problem.
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09-11-2006 10:00 PM  14 years ago
Leebert

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Thanks for that Thomashome.
I have 'reassembled' my motor with loctite.
There seems to be a lot of support (here and elsewhere) for the Futaba 146i so I will look into that but I am concerned that PCM will only hide the issue when I would rather cure it - Or, is PCM a more robust method of encoding the tx signal in the first place???

Very confused!
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09-11-2006 10:13 PM  14 years ago
Thomashome

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West Sussex UK

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I use JR and only the 770 PCM, used them in both IC and electrics and never had any problems - have no knowledge of Futaba.

You should be fine with the Shulze, - stick it as far back as you can away from the battery and ESC, in my gallery is my old Trex which did work fine but the ESC got a bit warm and cut out - moved it under the fan and it was fine

I did have a problem on both my Avant and old Raptor 90 with the Quick UK metal tail, one of the blade bolts was slighty loose and vibrating which was enough to cause radio lockout - go over every nut and bolt and make sure none are loose.
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09-12-2006 09:19 PM  14 years ago
Leebert

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Surrey - UK

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ok - tried a different route tonight.

Took the rx and ESC out of the heli and connected it up with some S148 servos that I had lying around. Plugged it all in to the Schluze rx and walked away...

With all servos connected and the motor I had seven flashes on the rx at 50 paces and with one servo just in ch 1 and no motor I had 2 flashes / glitches (again, at 50 paces). Is this ok?

Is PCM the way to go or am I just kidding myself??

Any ideas??

Thanks
Leebert
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09-12-2006 09:41 PM  14 years ago
Thomashome

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West Sussex UK

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I'd be tempted to go PCM anyway, I just build a model with a PPM JR700, if I just tap a servo screw gently with a screwdriver all the servos go berserk - no motor in the model (slope soarer) so not bothered but wouldn't like it in a heli. Saying that I have used a Schulze in the past and loved it.

You could try a different speed controller as that is the only other thing left, costly buy just to test - see if you can borrow one, if you fly midweek you could try my Jazz.
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09-13-2006 07:11 AM  14 years ago
nivlek

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Norfolk England

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I use a Berg Hyperion in my TRex SE , but I fitted ferrites on the lead from the ESC and the seperate BEC that I use . I also made sure that the frames were electrically connected (required some sanding on the inner tail case etc) , and I use silicon oil on the tail belt . The result is a glitch free machine .
I would suggest the same for any receiver , including a PCM .
At the end of the day , it gets dark .
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09-13-2006 09:32 AM  14 years ago
Leebert

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Surrey - UK

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Thanks for that Thomas & nivlek.

I have a ferrite on the ESC but no seperate BEC. I use silicon on the belt but I have a carbon boom and haven't done the sanding thing so I'll look into that too. Anything for a glitch free rex!

I will try again with a friends tx and also his spare PCM rx and see if there is any difference.
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09-13-2006 11:21 AM  14 years ago
Thomashome

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West Sussex UK

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Have you got a spare RX pack you could try?

Plug in a RX battery but DON'T plug in the LiPo so there is no power going through the ESC - do your range check and see if it glitches.
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09-13-2006 05:23 PM  14 years ago
Leebert

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Surrey - UK

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Thanks for that. I can use the pack out of the Raptor for testing.
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Home✈️Aircraft🚁Helicoptere-AlignOther › Which rx? - UK
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