No spark offside plug.

Information relating to the Matchless G11 or AJS Model 30 600cc twin
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Joined: Wed Nov 26, 2003 12:00 am
Location: DEVON UK

No spark offside plug.

Postby OLD SHEP » Fri Mar 25, 2011 4:39 pm

Have lost spark on offside plug for my 1956 Model 30. Last ride bike would only tick over or take a tiny bit of throttle. Now won't start. New plugs, cleaned carb. Checked slip ring and carbon brushes, looked good. Checked sparks, none on offside plug, the other looked good. Any magxperts on here seen this before? Chris.

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No spark offside plug.

Postby 1608 » Fri Mar 25, 2011 7:11 pm

Have you tried another plug. Check that the mag points are opening for both cylinders.

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No spark offside plug.

Postby Rob Harknett » Sat Mar 26, 2011 9:01 am

What above connection to the mag and brush

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No spark offside plug.

Postby Don Madden » Sat Mar 26, 2011 4:37 pm

Check for uneven wear of armature where the ground brush contacts & same for the slipring. Spark erosion will eventually pit both where the brushes no longer make contact. Cheers, Don.

Posts: 12
Joined: Wed Nov 26, 2003 12:00 am
Location: DEVON UK

No spark offside plug.

Postby OLD SHEP » Thu Apr 21, 2011 4:25 pm

I've ended up sending the mag to Plymouth for a rebuild. 'Kinell. That's going to be expensive. Chris

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