Lucas mag cam ring

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Re: Lucas mag cam ring

Postby SwedScott » 12 Oct 2017, 08:06

Hi

I do all my magneto and dynamo work myfself, exept rewinding. Therefore I have only bought parts from Dave Lindsey. This service has been faultless. I can only judge from this!

I have myself cut new groves in cam rings, and the tricky bit is to get them in the right place, as pointed out earlier. Really needs to be done in a machine.

It was some time ago I worked on a magdyno, but couldn’t be so that a new plunger that hooks into the camring could restore operation? This of course without seeing this actual case. I have not yet seen a groove in a camring that’s so worn that it’s not usable.

Best regards and good luck!

Leif
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Re: Lucas mag cam ring

Postby Barrie » 12 Oct 2017, 10:22

Back to rehab for you Stan
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Re: Lucas mag cam ring

Postby Jeff Reed » 12 Oct 2017, 10:26

Hi Chris, I sent you a pm re. a cam ring, did you get it? Jeff.
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Re: Lucas mag cam ring

Postby chris wastell » 12 Oct 2017, 13:30

[quote="Jeff Reed"]Hi Chris, I sent you a pm re. a cam ring, did you get it? Jeff.[/quote]
Hi Jeff, sorry, I haven't got a PM from you. Can you try again please?
Chris
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Re: Lucas mag cam ring

Postby chris wastell » 12 Oct 2017, 13:34

Leif, I have replaced the cable end with a new old stock item but it hasn't cured the problem. there is only a tiny interface between cable end and cam ring and the slot in the ring has worn a slight chamfer, enough for the cable end to slip out. The BTH design is far superior.
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Re: Lucas mag cam ring

Postby Tman » 12 Oct 2017, 14:51

I've never seen or had this problem myself, but the wear must be so slight that (without wishing to repeat myself too much!) a little burst with the MIG and file/Dremel should sort it.
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Re: Lucas mag cam ring

Postby Barrie » 12 Oct 2017, 15:22

Also check the ring cannot rotate too far as this will also let the cable to disengage from the cam ring slot
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Re: Lucas mag cam ring

Postby Tman » 12 Oct 2017, 19:45

Yep, good point!
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Re: Lucas mag cam ring

Postby chris wastell » 13 Oct 2017, 07:22

Interesting point, Barrie. I discussed that very point last night at the VMCC meeting. I don't THINK its moving too far but it got me wondering if the slot should have been further "back" round the radius. I have to say, I hadn't thought of using the Dremel, how obvious? Sometimes one's mind gets focused too much on the traditional methods, completely overlooking modern ways to think outside the box slightly.
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Re: Lucas mag cam ring

Postby chris wastell » 16 Oct 2017, 16:05

Update: One of our embers has kindly come up with a surplus cam ring so the problem is solved and I can refurbish the other one at leisure. Many thanks for all the help.
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