Hi, I'm looking to purchase a 1965 A reg BSA B40 that has a B40M engine fitted (B40 Military MK2 1968-69 according to my friend Rupert).
My understanding is that the WD engine uses different gear ratios to the road bikes. The seller has no idea what ratios it has currently (he's selling it for his dad).
So, my question is, am I likely to run into useability issues when driving on the road. I have read that you have to rev hard in 3rd to get it to pull in 4th.
I must say that watching YouTube videos of WD bikes on the road they all seem ok.
Thank you
Hi,
My friend owns 2 WD B40's and rides his less tidy one regularly.
He doesn't have any problems but he only potters about on country lanes on it.
He did once ride it from North Notts to Somerset with only minor issues.
His friends have nicknamed it the green slug, it seems happiest around 40mph but it will do short bursts up to 50 ish.
As far as I know everything is as it came from the army, gearbox and all.
Apparently army dispatch riders were not supposed to exceed 50mph - but they frequently did...