The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => Lucas, Ignition, Charging, Electrical => Topic started by: Stephen Foster on 09.10. 2022 14:22

Title: Ignition leads routing on plunger A10 ?
Post by: Stephen Foster on 09.10. 2022 14:22

Hello ,

Im trying to route the HT leads to run as tidily as possible yet missing the rocker box ?

Does Anyone have a picture of the original BSA Factory layout please ?
There is so little room above rocker box & I dont want them to touch it anywhere ?

Thank You,
Steve..

Title: Re: Ignition leads routing on plunger A10 ?
Post by: Triton Thrasher on 09.10. 2022 17:27

I don’t worry about plug leads touching an alloy rocker box.

You’ve got to keep them off the head and cylinder, or they can melt.

Title: Re: Ignition leads routing on plunger A10 ?
Post by: trevinoz on 09.10. 2022 22:02

On the swinging arm bikes the leads go through a short length of sleeving vertically and branch to their respective plugs. The cut-out wire also goes through the sleeve.

Title: Re: Ignition leads routing on plunger A10 ?
Post by: trevinoz on 10.10. 2022 03:07

Here's a couple of pictures.

Title: Re: Ignition leads routing on plunger A10 ?
Post by: Brian on 10.10. 2022 05:47

I have always run mine up through the "Y" at the back of the head and then branch out to either side. I have added a pic which hopefully will show it. I have done this with every A10 I have owned plus quite a few other peoples bikes. Its not "correct" but is neat. If your plug leads melt on the head then you need to buy some decent quality leads.