Model Boat Mayhem
Technical, Techniques, Hints, and Tips => Radio Equipment => Topic started by: BreezyB on March 11, 2008, 04:55:23 pm
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I am considering using a RX crystal extension lead to aid crystal changing. The Forum archive has helped me find a supplier but I'm now hearing bad vibes about using one. Opinion seems to suggest that the extension lead length may alter the frequency. What experiences have Mayhem members had on the subject please. :-\
Many thanks
Barrie.
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Afraid I dont know the answer but why would several companies produce something that doesnt work. :-\
If you decide to go with it they are fairly cheap here. http://www.midlandmodelcentre.co.uk/store/erol.html
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I purchased a servo extension lead years ago, but a friend of mine beat me to actually fitting one, after seeing his model have problems that he had not experienced before I did not bother.
Alan
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Servo or crystal Alan ? :-\
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Sorry I did mean crystal, it's been a hard day at work and just got back from building a model boat with the local sea cadets.
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Thanks for your advice Chaps. I think I will err on the side of caution until I know otherwise.
Thanks anyway,
Barrie.
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If they are not expensive I would give it a try.
It is a boat we are talking about afterall. If it were a plane then it could be a bin bag job if it goes wrong, but on a small pand it is hard to get into too much troulbe.
It may be that Alan's mate had some other issue.
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I would agree with tt - take care routing the extension lead to avoid any motor wiring and give it a go. You could even wrap the lead in tin foil to try to cut out any interference.
Barrie
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It may be of interest that Dave Milbourne from ACTion Electronics has advised that there is a good chance that frequency drift could occur (It was very good of Dave for taking time to assist) and has highlighted that there is some risk involved.
However I accept DickD's comment that they are readily available which suggests that modellers do buy them ( although I haven't come across anyone who uses one) and also tt's common sense point that on a small pond it isn't going to matter too much if is all goes wrong anyway.
It occurs to me that it may be OK in some cases so I think that this may be a "suck it and see" situation. I will chose a mid week visit to the lake to give it a try. :-\
Whatever the outcome, I am very grateful for all of your advice and comments. Where would we be without Mayhem !!!!!.
Cheers
Barrie.
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If it's just a bit of wire then it will make the frequency move down a bit but unless you are running at long range or with a coiled up aerial you should still be fine. Wouldn't use it for planes though. It might cause increased sensitivity to interference from a tx on the next channel, especially a split which might be an issue in crowded waters.