BSA Owners' Club Workshop Discussions

The BSA Workshop => Pre War => Topic started by: Matt H on 15 Dec, 2022, 21:12

Title: 1937 Empire Star 350
Post by: Matt H on 15 Dec, 2022, 21:12
Hi all, I've just joined so be gentle on me 8)

i've been looking for one of these for quite some time and managed to locate one at a reasonable price and I'm really pleased with what I found so I'd like to know a little bit more about this one. Namely does anybody know the previous owner as I understand, he was an elderly gent in Essex, some somewhere and it has a registration of DYY 231?

Also, I understand it has a very rare carburettor, but I can't really find anything about it. Not even pictures anywhere, but I do know it's in an AMAL horizontal type variant.
Why is this carburettor so rare was it a bad one and people swap them out?

Hopefully I can attach a picture! Hmm pic too large:((


Many thanks all!
Title: Re: 1937 Empire Star 350
Post by: Matt H on 17 Dec, 2022, 14:06
Sorry cant download pictures at all, great:))

Have been told its a 276 Amal but mounted horizontally.

Where is the best place to get Genuine Parts suck as i need a T shaped Original battery box if poss?
Title: Re: 1937 Empire Star 350
Post by: Matt H on 18 Dec, 2022, 12:15
Hi there.

Hopefully someone is out there and can point me in right direction.

I need some of the original style metal oil feed pipes and Fuel tank to carburettor feed pipe.

The fuel tank to carburettor has a coil, and then back up into the carb

And the rockers feed oil pipes. Can anyone suggest where I go as maybe these are pre made  or have I got to make them up?

Cheers
Title: Re: 1937 Empire Star 350
Post by: Y13 Alan G on 18 Dec, 2022, 13:33
You will have to make all the oil & petrol pipes yourself from the appropriate diameter copper tubing. If you also need the brass end flares these are available from various vintage suppliers. I have made all the copper pipes for the several vintage m/cycles I have owned & still own. You will need plumbers solder & flux to fit the brass flared ends. Electrical solder is far too soft and will easily crack with engine vibration. To make the coiled petrol feed you will need a small pipe bender, again pipe benders for hobby use are available to buy. You could bend the pipe round a suitable mandrill but be careful not to get flattened areas as they will restrict flow. Copper pipe is easier to work with if you anneal it by heating it up with a blow lamp until it is red hot, showing a greenish tinge, and then immerse in gold water. Hope this helps.
Title: Re: 1937 Empire Star 350
Post by: Matt H on 18 Dec, 2022, 14:28
Hi there

Thanks alot for your valuable advice.
Its 1/4 inch O-D so should be easy enough. Just noticed whilst tinkering that the Gear box chain adjuster threaded stud has snapped.. Love it:)))
Title: Re: 1937 Empire Star 350
Post by: Matt H on 23 Dec, 2022, 22:22
Hi all

Looking for a few parts.
Is the M24 350 and M26 the same apart from paintwork?

Also the Rear sprocket is an 40 tooth sidewall version also having 8 cold rivets or holes.
Are these available anywhere or what are my options with renewing sprockets on my M24?

Also looking for a T type Bakelite Battery box, does anyone have one?

Chain size is anyone knows what size it would be?

Cheers
Title: Re: 1937 Empire Star 350
Post by: JABBA99 on 24 Dec, 2022, 15:37
Hi Matt .... do you mean a B24??  - this is the 350 Empire Star (I've got a 1938 example).  The other B series have similar parts (although there are some differences).

If you're looking for details, then I suggest a search in the BSAOC library.  Assuming you're a member (or will be soon!) then log into the website "members area" and you will find a handbook, catalogue and databook for that year / model.
Jeff
Title: Re: 1937 Empire Star 350
Post by: Matt H on 24 Dec, 2022, 17:50
  Hi Jeff

Thanks for the response. Yes B24 not M :))

I will join definitely so thanks for that, today spent in the garage replacing the broken stud that tensions the gearbox chain up. Oh what fun:))

Interesting ive been told the carburettor is very rare, and now I believe it to be AMAL AK L/H as fitted to Douglas, Mark 3. 350cc unit.

Also, whilst taking the rear wheel out, it looks to be the original rear sprocket with eight rivets into the hub, the teeth are not hugely worn so will have to run it as it is until I locate a replacement.
Tomorrow  I'll be making up a new fuel pipe assembly out of quarter-inch copper piping:))
Title: Re: 1937 Empire Star 350
Post by: Pete H on 02 May, 2023, 20:21
I had the sprockets done on my 1937 Empire Star
You have to drill and bash out the rivets. Replacing them with bolts is the easiest solution.
Speak to John Hemmings 01547 530759
Unit M
The Timber Yard
Bucknel
Salop
SY7 0EL

He does a good job
Title: Re: 1937 Empire Star 350
Post by: Matt H on 03 May, 2023, 10:55
Thank you so much for that. Really helpful., since I have posted, I have done 300 miles and all looking good..
Had a slight gearbox weep, but that was easy to rectify, and apart from losing my Bakelite T shaped battery box top all is well. That is proving difficult to replace, so if anyone knows of one, please do let me know.

Thank you again
Title: Re: 1937 Empire Star 350
Post by: Gareth jones on 10 Jul, 2023, 15:40
HI i have a1938 bsa empire star b24. i am rebilding the engine i have noticed the piston does not come to the very top of the liner at full stroke. it stops short of about 6m its the  bsa   464 con rod. and heplex  7878 piston also the barell is the bsa one any idea out there