My new project...

[Paul Slootheer]

Actualy not a Ariel, but never the less lots of fun to come and at least British!
This beast will keep me busy quite some time I guess...

Looks great under the Chistmas tree!

[Steven.Carter]

Yes you'll have fun with that alright. And under the tree. Is your wife away?

[simon.holyfield]

Well it may not be an Ariel, but I for one would enjoy reading about your rebuild.

[Paul Slootheer]

Yes you'll have fun with that alright. And under the tree. Is your wife away?

Well Steven I must say I'am realy fortunate with my wife, she's finding it allright!
Simon I will keep you informed, however this project will be work in (slow) progress...

[Eero.Korhonen]

BSA A10, I think?
Br, Eero

[Simon.Gardiner]

Alloy head - Road Rocket?? Looks to be a big-bearing crank (difficult to see) - probably as it should be for a '57 bike. But pistons look to be the earlier lower-comp dished-topped ones.....and I think I see the very rare early attempt at providing a left-foot gear change - clearly not properly de-bugged yet!!
Very nice project though.

....however this project will be work in (slow) progress...

Especially when you get to trying to fit that rocker box over the push-rods

SG

[Paul Slootheer]

Simon, I have to confess I'am not an expert into BSA but I think you are right this is a Road Rocket head fitted on a Golden Flash engine. It is indeed an 1957 motorcycle. I guess 85% complete. The pistons are dished and all is still on standard bore. However the engine is realy filty and it looks someone once have made a attempt to make the engine run on Castrol R... All in all a nice project when you not in a hurry as I'am. The bike came with a old style log book which tells me engine and frame belong together, so thats nice. I only see three owners including the motorcycle shop who acquired the bike from BSA's. The log book started in march 1957 and ended january 1962... It came from the Middlesbrough area.

[Phil B]

Log book too, nice!!

[Simon.Gardiner]

...I think...this is a Road Rocket head fitted on a Golden Flash engine.

Paul:
The alloy 650 heads are now quite rare/expensive, might be worth checking that no-one's put an alloy A7 head in the 'basket' - although Mr Carter seems to be running one of those on his Huntmaster very successfully!

(If you've not found it already, there's a lot of good A10 info here:
https://www.a7a10.net/forum/)

SG

[Steven.Carter]

...I think...this is a Road Rocket head fitted on a Golden Flash engine.

Paul:
The alloy 650 heads are now quite rare/expensive, might be worth checking that no-one's put an alloy A7 head in the 'basket' - although Mr Carter seems to be running one of those on his Huntmaster very successfully!

(If you've not found it already, there's a lot of good A10 info here:
https://www.a7a10.net/forum/)

SG

I'm actually now of the opinion that the alloy a7 head is better.
Steve