The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => A7 & A10 Engine => Topic started by: Flash Chris on 21.05. 2026 17:43

Title: Rocker box “mod”
Post by: Flash Chris on 21.05. 2026 17:43

I know historically rockers and mods don’t get on, but what’s going on here? Any thoughts?

Title: Re: Rocker box “mod”
Post by: berger on 21.05. 2026 20:18

whats going on? well someone couldn't get the push rods located so did that.

Title: Re: Rocker box “mod”
Post by: Superflash on 21.05. 2026 20:19

Would make getting the pushrods seated a whole lot easier. Bit of a bodgy job though. A milling machine would have made a nicer job. Interesting idea tho.

Title: Re: Rocker box “mod”
Post by: Joolstacho on 22.05. 2026 00:51

And the countersink screws are a bit 'infra-dig' eh?

Title: Re: Rocker box “mod”
Post by: sean on 22.05. 2026 01:50

makes you wonder how they did the push rods on a production line

Title: Re: Rocker box “mod”
Post by: BagONails on 22.05. 2026 05:18

I think they trained up the operators with the longest fingers, probably women, they are the most dexterous...

I remember in Ford's automatic transmission plant in Bordeaux, all the workers assembling the hydraulic 'brain', the valve body and shift control valves, were female. Men just couldn't do it, not at line speed at any rate.   

Title: Re: Rocker box “mod”
Post by: CheeserBeezer on 22.05. 2026 05:41

Interestingly, the Ariel Huntmaster (Ariel's version of the A10) had a similar thing as standard, however, the one in our thread is obviously a mod. Have a look at this....
https://www.ebay.co.uk/itm/224648427225

Title: Re: Rocker box “mod”
Post by: Greybeard on 24.05. 2026 09:35

My first big bike was a Huntmaster. The 'ole in the top was useful.

Title: Re: Rocker box “mod”
Post by: Flash Chris on 25.05. 2026 14:11

Thanks for all the replies guys.