Offroad BSA Build?

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Yeah, yeah, I know, I haven't finished the other bike so why would I start another build? Well, the Norton is *almost* done. :mrgreen:

Back in the day (this would be early 90s for those of you following along) I picked up this poor, formally nickel plated frame. Like most of the stuff from those days I don't really remember any details. I was buying and selling a lot back then to make some extra cash, with the idea that I'd pick the best parts and make bikes one day, who knew that it would be 20 years later...

This probably came from Jim Krist, who was a former flat tracker. I think I got a few bikes and parts from him. He did have a beautiful BSA Hornet but I think he eventually sold that. Last I heard he was living in NY somewhere.

Where was I? Ah, this frame. I knew it was for a BSA but I always had designs on converting it to Triumph to fit a nice T120TT engine I have. Then I'd make a street tracker out of it or something. Now that I'm older and if possible, more lazy I like the idea of a BSA motocrosser. I didn't say I was getting smarter...

Everyone assumed the frame was a Trackmaster as it had many of the features but when I showed a picture of it to Pete Fisher of Powroll, who now owns all the tooling for Trackmaster, he suggested that it was a late Sonicweld frame. But I've never seen a Sonicweld with a swingarm. Speaking of the swingarm, it's got a diamond cross-section. I was told that it was made somewhere in the Pacific Northwest. The only other one I've heard of was hanging in Cliff Majhor's shop (aka The Sandy Bandit).

Offroad BSA Build?

Offroad BSA Build?


The engine should be coming from the East Coast in about a month. I think it's an A65L, I know between my brother and I we bought at least two BSA "projects". I don't know from which pile the engine is coming from. It's making it's journey across along with my Production Racer fairing. Good to have an uncle with a big RV and penchant for driving cross-country a lot. :mrgreen: The engine in the pictures was just some empty cases I borrowed at one time to confirm the frame actually was for a BSA twin and not something else.

In another pile of parts from back in the day I pulled out these Ceriani forks.

Offroad BSA Build?


So why a motocross bike? I tried riding the little Bultaco 125 Pursang at the big AHRMA National and it would just get bogged down. The are many factors, mostly the inexperience of the rider, but the way Dick Mann set up the track you can just tell it's for the big four-strokes. So I figure just get a big BSA, hold on and see if that's any better. What could be wrong with that plan? :roll:

I'll probably clean up the frame, throw some Rustoleum on it. I have some stock Triumph wheels but I'l save them for another project. Does anyone know what wheel (21in) would work well with the Cerianis? And then I need something in the back. I'll seal up the oil-in-frame and run an external oil tank. Seat and fuel tank and done. Right? :mrgreen:

Maybe it will look something like this:
Offroad BSA Build?
 
Looks like a cool project Dave, these days there is a huge following for the B50s, so any chassis parts you're missing you may able to find something to fit.

Good Luck with it, and most importantly Enjoy it :mrgreen:

Webby
 
Dave,
That's got heaps of potential. My personal fabourite is Jim Rice's flattracker 1970 Ascot BSA, Dave Mann also had a similar one. In the UK, there are (was) a bunch of serious A65 MX'ers. If I can find any links or pix I'll post.

Mick
 
Dave, you could try a pair of Ducati 450 RT wheels, nice Borrani's. ebay usually has someone selling RT bits.

graeme
 
GRM 450 said:
Dave, you could try a pair of Ducati 450 RT wheels, nice Borrani's. ebay usually has someone selling RT bits.

graeme

My uncle use to race a 450 RT, but he doesn't have any parts left.

Offroad BSA Build?
 
So I emailed a couple people today, one guy was "110% sure" it was a later (1972) Trackmaster.

Another guy was even more convinced that it was a late Sonicweld (after Ray left Sonicweld to form Trackmaster). Why was he so sure? He said he raced one just like it in his amateur career. In fact he offered to trade me for a Trackmaster frame so he can rebuild a bike like he use to race. I might take him up on it if the other frame is in better shape.

So far that is two votes Sonicweld and one for Trackmaster. :mrgreen:

Stay tuned...
 
prmurat said:
Will it no be more fun with a B50 engine?
Philippe

Won't fit the frame. If I wanted a B50 I'd just get one. But how many A65 MXrs do you see? :mrgreen:
 
Why not a racket 3 motor then :mrgreen:

Jean

PS The misspelling is intentional
 
Hi

Nice looking frame, I had a garage break in was wailing to a friend that the wheels from my CCM 350T had been stolen.
He informed me that they were the same as 80s Fantic trials bike wheels, If this is true they would work well and look the part on your bike.
Its good to see somthing different.

Regards Bob
 
rocker1 said:
Hi

Nice looking frame, I had a garage break in was wailing to a friend that the wheels from my CCM 350T had been stolen.
He informed me that they were the same as 80s Fantic trials bike wheels, If this is true they would work well and look the part on your bike.
Its good to see somthing different.

Regards Bob

I can tell you right now that I can count on one finger the number of Fantics I've seen. They are not allowed in our vintage trials so they are kind of orphans. I'd have just as much luck finding CCM wheels. And I can tell you how many fingers I'd need for the CCMs I've seen. I'll give you a hint... :mrgreen:
 
rocker1 said:
Hi

Nice looking frame, I had a garage break in was wailing to a friend that the wheels from my CCM 350T had been stolen.
He informed me that they were the same as 80s Fantic trials bike wheels, If this is true they would work well and look the part on your bike.
Its good to see somthing different.

Regards Bob

Fantic uses Grimeca 125mm hubs, in common with the CCM trials bikes. Several other machines such as SWM and early Beta's also used these hubs, and in the US CanAm-Bombadier, which means they can be found on Ebay pretty easily.
 
Carbonfibre said:
Fantic uses Grimeca 125mm hubs, in common with the CCM trials bikes. Several other machines such as SWM and early Beta's also used these hubs, and in the US CanAm-Bombadier, which means they can be found on Ebay pretty easily.

Hate to say but we're not exactly tripping over Can-Am parts in this neck of the woods. :mrgreen:

I suspect I may have better luck with the Ducati wheels. Luckily this project is going to take, ahem, a while...
 
Loads of Bultaco wheels on ebay in the US.
just looked and found 10 or so in Texas.
 
swooshdave said:
...Hate to say but we're not exactly tripping over Can-Am parts in this neck of the woods. :mrgreen: ...

There's a couple of Can-Ams in the Norton scrap pile up the road. Too much snow to see what's there right now but I remember seeing at least four or five. Show me what you want and how much you want to pay and I might be able to purchase the parts from the scrap hoarding owner in a few weeks.

Will
 
Anyone want to comment on this frame? I'm personally leery of the dented downtubes and the shoddy welding on the back engine mount.

Offroad BSA Build?

Offroad BSA Build?

Offroad BSA Build?

Offroad BSA Build?
 
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