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Rx and ESC compatability?

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Terry Plumridge 103/12/2020 12:26:50
13 forum posts

I would like to use my old 35 MHz gear, a JR XP 652 Tx with a JR R700 Rx.

I am buying a Multiplex Xeno with the motor, servo, ESC combo. The ESC is a BL-20-SD, the servos Tiny-MG.

My question is, Is this modern equipment going to work OK with my 20 year old Rx. I have checked out my radio gear, internally it is like new, no black wire etc. and it is range checked.

Thanks in advance, Terry.

Keith Berriman03/12/2020 13:02:05
846 forum posts
7 photos

The only time I have seen successful matching of 35 meg equipment with modern brushless set up is by having a separate battery on the rx side

Keith Berriman03/12/2020 13:02:06
846 forum posts
7 photos

Whoops

Edited By Keith Berriman on 03/12/2020 13:02:51

Geoff S03/12/2020 13:11:25
4034 forum posts
68 photos

I don't know anything about the JR receiver you've quoted but I've happily used 35Mhz receivers with DSP (Digital Signal Processing) like Multiplex IPD and Schultz in combination with brushless set ups. There's no reason why it shouldn't work as long as you're careful with the installation and do a range check to make sure there's no interference.

Geoff

John Lee03/12/2020 13:30:52
857 forum posts
109 photos

You should not have a problem Terry. The Xeno was launched in 2010 when most of us were still using 35Mhz & I seem to remember there is a channel in the wing to run the aerial down to avoid the pusher prop.

Nice flying model, I bought mine when I had a Mazda MX5 as it fitted easily in the small boot when folded.

J D 803/12/2020 13:31:03
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1765 forum posts
88 photos

I fly electric aircraft on 35 meg Futaba. All are modern brushless set ups.

kc03/12/2020 14:05:27
6941 forum posts
175 photos

Nowadays with everyone using 2.4 ghz frequecy control of 35 mhz has become very slack or non existant so be very careful to ensure you know of other 35 mhz users nearby. Is 35 legal and commonly used in Austria? is it used for anything else but planes?

Frank Skilbeck03/12/2020 14:10:24
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4929 forum posts
114 photos

The only brushless 35 MHZ interference I had was with a small GWS rx right next to the motor on a small MIG15 EDF, a Webra 35 MHZ was fine. All my electric models are now on 2.4 GHz , but that's mainly for the telemetry feedback.

Allan Bennett03/12/2020 21:11:43
1791 forum posts
55 photos

Having suffered interference problems (I don't remember the detail) on my first 35MHz electric conversion I made a point of using opto ESCs (true ones, not just the BEC-less ones that are commonly called "opto" these days) and a separate Rx NiMh pack for the receiver. Before moving to 2.4GHz I also had a TwinStar which used the BEC in the ESC without any problem, so interference problems are a possibility but not a given when using 35MHz.

trevor wood 203/12/2020 22:10:51
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87 forum posts
60 photos

I've got a JR 652 TX and R700 RX that's installed in an electric powered Seagull Boomerang powered by 4S 3000 lipo and 3548 brushless/HK 60A ESC combo. Everything works exactly the same as it does when using modern 2.4GHz equipment.

Terry Plumridge 104/12/2020 12:04:30
13 forum posts

Hi all, thanks very much for your replies, very helpful.

Cheers, Terry.

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