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Messages - JulianS

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466
The Star and Garter / Re: No v5/c
« on: 27 April, 2017, 09:13:06 »
You would need documentary evidence to link the number on the tax disc to the frame number of the bike for it to be of any use.

I presume you have check the DVLA site and the number is not there?

You could research the number if the original local authority motor tax records still exist for the area in which it was registered. Worth looking at the Kithead Trust website.

http://kitheadtrust.org.uk/vehicle_records_5.html

Have you seen the DVLA website

https://www.gov.uk/vehicle-registration/old-vehicles

Also a lot on the BSAOC website under "machine dating" tab.

467
Singles / Re: How many rings in an M20 piston
« on: 26 April, 2017, 20:08:21 »
The V twin and 4 cylinder models.

468
Singles / Re: How many rings in an M20 piston
« on: 26 April, 2017, 17:57:09 »
From 1934

469
Twins / Re: Matching numbers
« on: 26 April, 2017, 10:47:38 »
A very rare coincidence I would say.

The factory despatch books for the A50/A65 are recorded frame number first 101 up. The engine numbers are not issued in order.

The A65 engines with no extra letter suffix or prefix ended in about September 1963 somewhere around A65 4000, when the numbers adopted the form A65A, A65B, A65C etc.

The frame numbers from Sepember 1963 started at A50 5501  (according to Glass's Motorcycle check book 1958-1965 edition) but these would include A50 as well as A65 engines.

A65 engine/frame  left the factory with the same numbers from around March 1966.

The only way to establish whether your bike engine and frame numbers match those it left the factory with would be by obtaining a dating certificate from the BSAOC Club Librarian.

470
Pre War / Re: Petrol tap for 1936 Blue Star.
« on: 25 April, 2017, 20:05:32 »
If its roughly 1/2 inch its 1/4 bsp.

If its roughly 5/8 inch its 3/8 bsp.

471
Pre War / Re: Petrol tap for 1936 Blue Star.
« on: 25 April, 2017, 19:38:54 »
The threads will be BSP (British Standard Pipe).

1/4 BSP is a common one for pipe union - od 0.518 inch x 19tpi.

Some tanks take 3/8 BSP x 19tpi. OD 0.656 inch.

Also seen 1/8 BSP x 28 tpi. OD 0.383 inch.

472
Singles / Re: B31 Sparks & Lights
« on: 25 April, 2017, 12:23:53 »
To fit a crankshaft mounted alternator is a massive task, if it even can be done.

Firstly the current drive end shaft is not suitable for an alternator rotor and would need to be changed for the later shaft fitted in 1958/59 when alternators were used.

Second you would need to replace the primary chaincases for ones which would allow for mounting the alternator stator and fixing the stator.

Third you would need a clutch with built in cush drive.

No doubt lots more practical issues.

Many of us are using Lucas dynamos and magnetos without any problems - thye just need to be in good condition.

I  used my A10 with magneto and dynamo (on 12 volts) for commuting to work - shift work in all winds and weathers over many years until retirement 4 years ago. No electrical problems. Bright lights.

You could replace the mag part of the magdyno with a modern self generating BTH unit


http://www.bt-h.biz/md1r--magdyno-single-cylinder-19-p.asp

You could use an Alton alternator with it.

These modern items cost around 1000 plus VAT.

Or you could just get your magdyno reconditioned for less.

I have had good service from Andrew Guttmann at Priory Magnetos.

https://sites.google.com/site/priorymagnetos/home

473
Twins / Re: Silencers
« on: 25 April, 2017, 09:46:40 »
Bought a stainless Armour silencer for my A10 earlier this year, the build was good but the fixing point for the mounting bracket was a bit further back than is normal and there was a built in clamp on it for the joint with the pipe which fouled the frame and needed to be cut off before it could be fitted.

474
Twins / Re: Carb to airbox
« on: 24 April, 2017, 20:57:55 »
You could try these for the rubber.

http://www.feked.com/bsa-air-filter-connector-hose-a7-a10-swinging-arm-models-from-1954-onwards.html


Many dealers will do a trumpet or a pill box type air cleaner. I use a S and B pill box type from Hitchcocks Motorcycles on my A10.

475
Singles / Re: M33 1955 - Starting Issues
« on: 23 April, 2017, 21:17:53 »
Full advance when the wire is slack, providing its got the correct magneto.

476
Pre War / Re: pre 1930 frame numbers.
« on: 23 April, 2017, 16:05:08 »
The Club has despatch books from 1924 and the website under "machine dating" includes frame numbers from around 1914.

Extra information would, I am sure, be welcome and of great interest.

There is a "contact us"  on the website which will put you in touch with the Club.


http://www.bsaownersclub.co.uk/

477
Singles / Re: B25 Difficult Starting
« on: 23 April, 2017, 10:21:14 »
You will need an air slide, spring and guide for the carb and a cable and handlebar lever.

All the carb bits can be obtained from Amal

http://amalcarb.co.uk/

The lever and cable from your favourite dealer.

These bikes should start easily with or without the choke - tickle the carb switch on ignition slightly open throttle and kick. Make sure the carb throttle slide is raised enough on the throttle stop to allow a little air through otherwise no petrol will reach the engine.

478
Singles / Re: 1947 B31. Which rear light?
« on: 22 April, 2017, 15:22:31 »
This is the MT211 as fitted to the A7. You can see the cable run. From the 1947 brochure.

479
Singles / Re: 1947 B31. Which rear light?
« on: 22 April, 2017, 14:46:13 »
Lucas master list 1936-58 shows the original fitment was the MT211 between 1945 and 1950 but dont go out in the dark with it because nobody will see you.

Many of these tiny rear lights would have been changed by owners over the years for a more visible unit.

480
Pre War / Re: OHV Sloper Gearing
« on: 21 April, 2017, 11:27:34 »
I dont have a Sloper, but below is from the 1929 parts book showing sprocket sizes.

Looks like your gearing is lower than normal sidecar ratios.

Engine sprockets came with 18 - 25 teeth but no alternatives shown for the pther sprockets.

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