BSA Golden Flash Plunger side car mounts

[Collide]

Looking for help with restoring Golden Flash and adding a Watsonian side car, need help with frame mounts and pictures. Any help, info, resources etc would be greatly appreciated

[lawnmowerman]

Hi Collide

Are you mounting the chair on the left or right?

Jim

[Collide]

Hello the sidecar is a right side monza. The BSA is a 1953

[WozzA]

This may be a good starting reference point 4 you... 

[Collide]

Thats a great start I was told it was a factory side car bike a the seller gave me a set of mounts to to fame but there not right thanks for the help Clyde

[Swarfcut]

Hi Clyde... A sidecar bike will have the lower gearing required to pull a chair. A 49 tooth rear sprocket is the standard for sidecar, 42 teeth for solo. So easy to see if it is set up as a  sidecar bike. Gearbox sprocket is standard 19 teeth, solo and sidecar, but the 18 teeth A7  gearbox sprocket  sometimes fitted for heavy work.

 Swarfy.

[lawnmowerman]

Hello the sidecar is a right side monza. The BSA is a 1953

Hi Clyde

I did not realise that Watsonian made a right side Monza - I bet the mudguard is rare!
I fitted a Monza (left hand) to a Matchless 650 a couple of years ago and it was fairly straightforward. I picked up most of the fittings from ebay and bike jumbles.
You will need to check the fork springs are for sidecar use and you will probably need to fit a smaller primary and/or gearbox sprocket.
Another issue may be checking that the kickstart has enough clearance.
If you have a sidecar brake then things may get interesting as the pedal normally sits next to the bike rear brake pedal so you can operate them both at the same time with your left foot. With a left hand braked chair you will be using both feet to brake 

Good luck with the project and keep us posted.

Jim