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Lucas SR1 and RS1 magneto alternatives

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Lucas SR1 and RS1 magneto alternatives Empty Lucas SR1 and RS1 magneto alternatives

Post by 68jcb on Sun Jan 20 2019, 13:53

I have to Lister D's that both need complete strip down and refurb, both engines have dead mags/coils and need replacing/rewinding. I was wondering if anyone had used an alternative from 'Minimag'? The systems they have seem reasonably priced and I would imagine that they are reliable.
Coils rewinds are not cheap and in my opinion magneto's are/can be a little fragile.
Any thoughts on this would be very much appreciated.
Cheers, Julian

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Post by chiefy on Tue Jan 22 2019, 13:53

Hi Julien,
If finances are tight you could run with a battery and coil until you top the piggy bank up.
Regards,
Chiefy.

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Post by Robotstar5 on Tue Jan 22 2019, 16:47

There was a Lister D at a show in SEM that used a metal spoon and wooden clothespeg as a set of CB points Very Happy

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Post by Villiers on Tue Jan 22 2019, 18:14

Wico will fit.
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Post by blue cat on Fri Jan 25 2019, 19:46

Wico A coil can be made to fit into a Lucas RS1.

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Post by 68jcb on Sat Jan 26 2019, 21:38

I cleaned all parts of the RS1 today, re-assembled and put a new condenser in. Have spark at the points, but very little spark on the lead.
I will use 12v coil for a time untill funds allow for a rewind.
Thanks for all your replies
Julian

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Post by blue cat on Mon Jan 28 2019, 17:57

The condenser is supposed to prevent (excessive) sparking at the points. Some "new" condensers can be faulty.

Make sure the HT lead is not silicone. If you have a spark plug cap make sure it is not the resistive type, better still throw it away and fit a simple brass end.

Have you checked the HT resistance with a meter?

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Post by 68jcb on Tue Jan 29 2019, 21:06

Not checked with a meter yet, my son is an electrician and he's going to lend me his meter.

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Post by blue cat on Thu Jan 31 2019, 19:34

Resistance reading for the HT part of the coil should be 4-6 k ohms. This doesn't gaurantee that it's a good coil only that it might be OK (after all it's probably 50-70 years old).

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Post by 68jcb on Thu Jan 31 2019, 20:39

Thanks for the info! As soon as this silly weather clears up I will venture out and get my sons meter. At least with this weather it does give me more of an oportunity to do some work on the engines!

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