The BSA A7-A10 Forum

Technical => Lucas, Electrical, Ignition => Topic started by: Brian on 09.05. 2011 08:06

Title: Auto advance unit
Post by: Brian on 09.05. 2011 08:06
I picked up a couple of auto advance units in my travels and one of them is a bit unusual.

The one on the left in the pic is the normal type with the retaining ring that presses onto the shaft to hold it together but the one on the right doesnt have the retaining ring. The boss that fits the maggy shaft is one piece. Has anyone come across one like this before and if so how does it come apart ?
Title: Re: Auto advance unit
Post by: muskrat on 09.05. 2011 10:28
Gee Brian if it's got you stumped!!! Never seen one like that.
Cheers
Title: Re: Auto advance unit
Post by: A10Boy on 09.05. 2011 12:18
Brian
Are you sure its not there and just been turned down which has hidden the "join" ? There is a faint mark although its not clear in the pix.
Title: Re: Auto advance unit
Post by: Brian on 10.05. 2011 01:43
Andy you could be right. I just had a look, with my glasses on this time, and it does look like there is a visible ring around it. I will make a drift and give it a smack and see if it moves.