I can't find Triumph ones either, I ave been looking.
'70 BSA twins used the same stanchions as the singles, including the TR25 - Googling "97-3906" says they're down the road from you at Classic Motorcycle Spares.
The 97-3921/2 sliders are common to the entire '70 Triumph range and BSA's except the twins.
I'd use Triumph 650 springs.
All the seals, washers, etc. are common to both the Triumph and BSA ranges and thus widely available. When Googling several of the part numbers of the larger parts, both Burton Bike Bits and Hawkshaw usually come up. As well as them consider Grin, TMS, Yeomans and - just up the road from you - Reg Allen, most of whom do the large bits second-hand as well.
I.e. none of the Triumph bits are exactly rocking-horse poo ...
Engine is all bolted up now ready to go, I put some spacers between carbs and head today, bought some new cables at Kempton yesterday, close now, just the front end to get sorted. bought a Triumph front end from the bay, fitted new stanchions bushes etc, took it to the lockup to fit on the bike, but the stanchions don't fit the BSA yokes? Too loose in the lower yoke, and wrong taper for the top yoke. so now I have a set of Triumph forks I don't need. Just going around in circles with this whole front end situation.
bought a Triumph front end from the bay, fitted new stanchions bushes etc, took it to the lockup to fit on the bike, but the stanchions don't fit the BSA yokes? Too loose in the lower yoke, and wrong taper for the top yoke.
Certainly if you tried to fit "Triumph ... stanchions" in the current '67 lower yoke, yes, they will be too loose. And, in the recent thread, A65 Fork sliders different lengths, "kommando" posted that Triumph and BSA top yoke tapers are different.
Originally Posted by Kev.
Just going around in circles with this whole front end situation.
I appreciate that you might not have the interest to read many threads here, but the knowledge is available if you ask before you buy "from the bay"?
At worst, Gavin will be back in a few days (I think shift work stops him contributing for periods). As you posted, you've waited six months; a few more days is better than wasting your money on bits that won't fit? As the post before Gavin's says, the correct BSA stanchions were (still are?) available new not far from you? You're going to need these even if you buy Gavin's front end.
PM sent to Kev regarding forks. I no longer work/ retired but I am busy occasionally on sailing trips/ gardening. The donor bike for the forks was a V low mileage 70L, it had smashed a lump off the gearbox when the chain snapped, I am fairly sure the Front end with the 8 inch TLS is original.
71 Devimead A65 750 56 Norbsa 68 Longstroke A65 Cagiva Raptor 650 MZ TS 250 The poster formerly known as Pod