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[Shipmate60]

Right all you clever chappies,
I have a problem and am seeking advice.

In a 27 meg 2 channel radio installation the speed controller and rudder serve "glitches".
I have substituted one by one the speed controller, rudder servo, bec battery for external battery power, and main battery. Changer the position of the aerial and checked all the batteries.
The range that this starts is about 20 feet.
1 time when the gear outside the boat had a good range of over 60 feet with aerial not extended but only the once.
The motors are suppressed.

Another strange thing is my 40 Meg set also glitches slightly.
The Radio is a HiTec.
It works fine in another model.

After substituting the component parts, and ALL the parts except Tranny and receiver it is still happening.
It cant be the tranny as it works fine in another model.

Any ideas, it has got me beat

Bob

[DickyD]

Bob as you know I am completely hopeless on this side of things but if this happens at a certain distance it must surely be in the sending or receiving of the signal.
You say you have checked everything except your receiver. Could you not do this.
Still what do I know ? ???

Richard

[Faraday's Cage]

2 suggestions Bob,

a) Can you reroute and separate the power wiring from the servo/receiver wiring.

b) Check your receiver for damp / water ingress.

Terry.

[Youngat65]

Have you checked the receiver Ariel to make sure there are no breaks in it some time they break just near to the receiver but the outside insulation isn't broken

[HS93 (RIP)]

Bob  to save all the questions of where is such and such any chance of a picture of the inside ,sometimes something stands out.
Peter

[BobF]

You said it works OK in other models. Does this require a change of crystalls say for the transmitter. If so it could be them.

[Model Boats Website]

First of all check out this page and work your way down the flow chart, that cover many faults that can occur however if it does not solve the problem I can only pressume there is some sort of interference in the area.

One suggestion that you may find useful is to move the receiver so that it is as far away from any other electronics as possible, you may need servo extensions but if you could temporarily move the receiver, try that. Also try a different set of crystals and run the receiver of a seperate battery pack (don't use the BEC circuit), sometimes the BEC can reduce the power to the receiver or not provide a smooth supply. Give these a go and let me know how you get on.

[FullLeatherJacket]

When I used to make toy aeroplanes much was made of "metal-to-metal contact" as a cause of interference, glitches etc. As a result we always used plastic horns with metal-pinned clevises etc, or electrically bonded together items which might rattle and generate spurious RF. Your problem sounds like it's more to do with the boat than the radio, so maybe check for rogue metal contacts?
Good luck.

[DickyD]

Bob  to save all the questions of where is such and such any chance of a picture of the inside ,sometimes something stands out.
Peter

If its Bobs Scheutze I have a picture of the inside.

Richard

[J.beazley]

Bob has posted this on my behalf as he could explain it better then me, yes the boat in question is my Schutze.

Sea rover 15a ESC, hitec reciever and tranny like bob has said.
completely baffled me and Bob for a long time on sunday afternoon.

Jay

[DickyD]

Have you got a picture of the inside Jay ?

Richard

PS Still waiting for my Tamiya plug. It didn't turn up today.

[HS93 (RIP)]

One off the bigest causes of interference as FullLeatherJacket has pointed out is Long piano wire rudder push rods,even with the rest of the instaltion OK this can still cause problems, The problem that caused the most damage was a chap at our club with an IC boat who did not do a range check because all his radio was brand new,unfortunately the receiver that was sent was a 35mhz one and the tx was 40mhz it even had the ticker on it saying 35 , but he was new and did not know until we got the bits out of the bank.  Fleet where no help just saying we will swop the receiver ,  and yes they do work on a short range as does some 27+40 together as long as the same xtals are in , Peter

[DickyD]

If its the same as mine the rods and linkages on the rudders are all nylon.

Richard

[Telstar]

Hi Shipmate

If you have substituted all the electronics as said, then try checking the motors themselves. If you have worn or sticking brushes on a motor, or a very rough or dirty commutator, it may give excessive sparking and generate too much noise (electrical noise) for the suppressors to deal with.
Just a thought

Telstar

[HS93 (RIP)]

One last thing have you tried a different TX  as I have seen the odd  HiTec Power amp go down it still works but very low power .
  the reason they go is if you use them on the bench with the ant down, this is what the importer said on return of item
Peter

[Shipmate60]

The only parts I cant substitute is the 27 Meg Transmitter and receiver.
I am all 40 meg now.
The trouble is that the radio gear works fine in another model.
I have heard of some HiTec 2 channel gear with short range as designed for cars.
I tend to suspect the Tranny, but am loathe to tell jay to trash it as it works in his Severn Lifeboat.
This is doing my head in!!

Bob

[Shipmate60]

This happens on the bench as well with all wiring seperated.

Bob

[FullLeatherJacket]

Bob

I bought an RF Meter from ACTion a while back. It clips to the Tx aerial and shows the actual RF output, as opposed to most TX  meters which only give an indication of the battery state. You can also move it from Tx to Tx very easily, so you only need one. Latest price for the kit is £12. ACTion are at

http://www.actionkit.co.uk/

Certainly works for me! How much hair have you left to tear out? 

[HS93 (RIP)]

This is it.

Bob

I bought an RF Meter from ACTion a while back. It clips to the Tx aerial and shows the actual RF output, as opposed to most TX  meters which only give an indication of the battery state. You can also move it from Tx to Tx very easily, so you only need one. Latest price for the kit is £12. ACTion are at

http://www.actionkit.co.uk/

Certainly works for me! How much hair have you left to tear out? 

I got one when I had waisted so much time looking at the HiTec with duff Power amp.

[J.beazley]

Okay heres a picture of the set up



each motor has 3 suppressors, reciever on the battery with ESC further up towards the bow with the RX battery pack.

Jay

[Tug-Kenny RIP]

Have you tried moving the receiver away from the battery.

I was thinking, all that lead and power drain by motors sparking !! etc.

Just a thought.

Cheers...Ken

[J.beazley]

We tried with the reciever right at the back and the ESC right up in the bow but it didnt make any difference.

Get this, ive taken the same RX and ESC out of my Schutze and put it in my baby Seven and all works fine ??? distance checked and well i walked all the way round the large lake in Whiteley without any problems or glitches from the radio BIZZARE.

Jay

[DickyD]

Presumably you didnt change over the battery or motors so could the problem be with the suppressors as I remember you said you had to resolder a cable the other day and I assume this is a recent problem.

Richard

[Tug-Kenny RIP]

Is that a metal railing around the deck ?   Anything 'differrent' about the build ? Iron filings in the gelcoat ?

Try the RX on deck with the Ariel vertical.    getting desperate now.   


Cheers...Ken

[DickyD]

Jay does your arial go up the inside or outside of the mast.

Richard