The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => Lucas, Ignition, Charging, Electrical => Topic started by: A10 JWO on 07.08. 2019 16:57

Title: Lucas indicator threads.
Post by: A10 JWO on 07.08. 2019 16:57

Can anyone tell me which thread is on shaft that fixes the indicator assembly to the fixing. I am talking about the chrome shaft normally 3 or 5 inches long fitted to the later OIF A65's and Meridan Triumphs. Thank you.

Title: Re: Lucas indicator threads.
Post by: ironhead on 07.08. 2019 23:58

G'day JW, have you got a set of verniers & thread pitch gauges ( inch)? These with a thread pitch chart will answer all your questions.

Title: Re: Lucas indicator threads.
Post by: muskrat on 08.08. 2019 12:29

G'day JWO.
I think it's 7/16 Whitworth/UNC.
Cheers