build a7 a10 from bits can I fit a cross over brake to any swinging arm frame?

[steve c]

Can I build  a7 a10 from bits can I fit a cross over brake to any swinging arm frame?

I having unfortunately lost the battle to keep my a7 Super Rocket hybrid  death trap! Something about too many bikes and it being required as rainy day money in a island renowned for rain meteorologically and financially to please the trouble and strife! I got a remarkably low amount of Danegeld for said prized lethal old vehicle!

My speciality is building  the desirable model lambretta from unrelated parts bsa a7 are similarly easy to build from a bare frame and other peoples cast off bits needing repairs, as everything fits the range. This is not possible with a honda etc as every bit is unique and therefore bloody expensive. The wifes edict is to buy a complete one! however if parts were acquired surreptitiously its quite easy to get enough to make another heavy British death-trap twin! and quite cheaply!

I have 8" brake plate, most of a gear box, all of a enclosed chainguard needing repair, a whole dynamo , a nice straight tank needing paint or rechrome, an excellent 1958 front mudguard, and excellent rear mudguard, a complete 1958 nacelle needing repair, good for seal holders and fork bottoms mising u caps , Most of a magneto

The full width cast iron wheels are cheap, in fact most of the stuff I like that most bikers hate, nacelles, enclosed hubs, the 1958  slim painted mudguard isnt used on chrome therefore rust prone rocket gold star replicas and is discarded!

I will be using low compression pistons on this one as advised by my wise old BSA  friend graham this time! any advice welcome

[chaterlea25]

Hi Steve,
The only basic difference between the 54-55 frames and the later ones id the size of the swing arm pivot pin
Early frames are sometimes sought after as they had the single sided rear wheel brake and swing arm as used on Goldie and RGS..These have a solid swing arm pin smaller than the later hollow one that took the cross over shaft
The location for the rear cable anchor bracket changed with the Ariel or cast iron hubs
Later on factory replacement frames had both types of cable anchor, which can cause confusion.. As these frames had the 4 cast lugs on the down tubes they are equally sought after by the RGS clone mob 

John

[Swarfcut]

  Forum members may consider Worty's adventures on the dark side to be a walk in the park compared to the short and tragic saga revealed by Steve C in his earlier posts from at least 10 years ago.

   I'd advise to collect any marginal parts you can find (cheap). assemble into a basket case (free) and admire. Don't attempt to fix, machine, repair, refinish, adorn or any of that expensive bollotska to achieve a runner. This satisfies the passion for oil, grease and personal injury, and maintains a working relationship with the main sponsor, SWMBO.

  Only then, when you've got most of the bits, consider spending the kid's inheritance.

  Swarfy.

[Joolstacho]

Yes, well, over a period of about 35 years I built mine up, starting with an engine.
The bike I ended up with doesn't even include that old 'bolt-up A7 engine, so you could say I started with nothing.

Man... It's doing it hard, building up a bike from bits. But I don't regret it now it's finished.
(What's that old song say? "I started out with nothing, an' I'll leave with even less")