The BSA A7-A10 Forum

Technical => Lucas, Electrical, Ignition => Topic started by: tlmark on 06.08. 2019 20:03

Title: Cam ring removal
Post by: tlmark on 06.08. 2019 20:03
Ok, guys, I have searched and searched
But can't find anything I'm fitting a Thorspark ignition but how do you get the old cam ring out?
Title: Re: Cam ring removal
Post by: trevinoz on 06.08. 2019 23:03
Sometimes with great difficulty.
Heat the end plate to say 150 degrees and bump it over something with a clearance hole for the cam ring.  It may take a few goes, depending on the amount of corrosion around the ring.
Title: Re: Cam ring removal
Post by: groily on 07.08. 2019 07:05
Probably not a manual one I'm guessing, as they move easily as a rule. But the fixed ones can be hard. A neat and easy-to-make  weapon for getting two-lobe camrings out is shown here: http://www.brightsparkmagnetos.com/workshop/BitsAndBobs/index.htm
Title: Re: Cam ring removal
Post by: tlmark on 07.08. 2019 07:32
Yeah it’s a auto
Title: Re: Cam ring removal
Post by: tlmark on 07.08. 2019 20:30
Cam ring successfully removed  *smile*

I soaked it in WD40 and left it for an hour or so, then I used a large flat blade screwdriver moving around the edge and slowly tweaked it out.