Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Topics - AdrianS

Pages: [1] 2 3 ... 5
Singles / B40 for sale
« on: 20 June, 2022, 21:19:44 »
In for sale section

Bantam / Bantam for sale
« on: 20 June, 2022, 21:19:13 »
In for sale section

Twins / Remote oil filter A50
« on: 12 May, 2022, 17:32:27 »
Fitted a remote oil filter on the A50 at the back of the swinging arm below the lower engine mount.
Only just got the tank back from having it derusted and lined so not yet started the bike.
Is it worth filling the oil filter with oil before fitting. Was concerned about any air lock from the engine to the filter unit preventing flow back or does this not happen. It I let it fill and prime itself then there may be quite a delay for oil to get to the top of the engine. By the way, it is an SRM pump.

Twins / Remote oil filter
« on: 02 March, 2022, 13:29:30 »
Just bought the commonly advertised remote oil filter kit and it looks like the best place to mount it is behind the engine above the centre stand using the bottom bolts at the rear engine mount.
Before I start designing a bracket has anyone who has fitted such a filter to a A50/65 got any patterns for me to copy to save me making a pigs ear of it through trial and error?

Singles / B40 downpipe
« on: 03 February, 2022, 15:44:25 »
For sale. See Sales and Wanted.

Bantam / Bantam tank for sale
« on: 26 January, 2022, 12:16:19 »
In the sale and wanted section

Twins / A50 Trousers
« on: 26 January, 2022, 10:53:13 »
I'm after a usable set of trousers for an A50 - I think the part number is 68-5082 if anyone has a pair or repairable one?

Also posted in the wanted section

Twins / Steering damper
« on: 13 October, 2021, 17:53:13 »
1962 A50

Just rebuilt my front forks ( one hadnít even got an oil seal in it) and painted the headlight and trousers.
Looked at the steering damper and the friction disc was in a very bad condition and broken up.
On replacing the disc there still is a large gap between the disc and the bottom yoke. If the damper is tightened only the front part of the damper blade makes contact with the disc. I put a washer under the frame part of the blade to lift it which does close the gap somewhat but I feel the damper plate should be virtually parallel to the friction disc and bottom yoke.
I wondered if the large washer from the early friction dampers which has cut outs in it would fit just under the bottom yoke to take out the gap Iíve got. Iíd give it a try if the cut outs fit the later damper nut.
Any thoughts?

Twins / Oil leak from speedo cable/gearbox
« on: 27 July, 2021, 14:43:07 »
Hi All,
I asked this same question April last year when I had an oil weep dripping off the speedo cable. The bike is an early A50 with the cable exiting the gearbox.
I had the engine out at the end of last year and completely rebuilt it as the bores were very worn and the timing side bush had about 15-20 thou play in it.
I didnt do anything to the speedo drive in the inner timing case as the weep wasnt too bad.
I wish I had now! I am losing about a soup spoon of oil each day. For some reason it has just become like that. I assume it is gearbox oil. I did fit a new cable after the rebuild and its been fine for quite a few miles.
1. Can the timing cover which has the drive assembly in it be removed without draining the engine oil? I assume it is gearbox oil that is leaking so will have to drain the gearbox.
2. How does the drive come apart?
3. I cannot find reference to the necessary oil seals/ O rings so may have to find some Viton ones to fit but am concerned that I dont want the leak again
( cant see anything on the Drags pages).



Singles / Plug thread repair
« on: 25 April, 2021, 08:50:03 »
Plug thread on my B40 is looking a bit iffy and feel that itís going to fail soon.
I suppose the best advice is to take the head off and get the local engineering firm to fit a helicoil.
Looking online there are several diy methods to do it, some leaving the head on.
Any advice from those who have suffered this?

Singles / Fibre washers
« on: 24 March, 2021, 09:36:19 »
Does anyone else have trouble with getting new fibre washers to seal?
The new ones seem to be made of a much harder material than they used to be and just donít ( in my opinion) seal as well. I have slight weeps from my Bantam gearbox drain, B40, and A50 gearbox, despite fitting new washers and tightening correctly.
Think I may have to start using Dowty washers.

Twins / A50 primary chain adjuster sealing screw
« on: 15 February, 2021, 13:15:11 »
Page 28 of the owners manual (1961) mentions a sealing screw for the primary chain adjuster. This is to allow a rod to be pushed up inside the adjuster to assess the chain tension. I cannot find a screw in my box of bits to fit. It is small - a 3BA screw just catches the thread but wont tighten. Anyone any ideas? I have hunted through various parts manuals but cannot find a part number or any info.

Twins / Clutch springs A50
« on: 02 February, 2021, 16:53:43 »
Further to my last post re clutch lock washer, I now have a further clutch question.
The existing springs are old and I did wonder if I was getting a bit of clutch slip.
I am having trouble getting new ones. The ones I took out were about 1.5 inches long with 8 coils of wire.  All the replacements I have looked at are the same diameter, same wire gauge , but have 10 turns and are about 2 inches long. I cannot get them to compress enough to get the retaining screws on.
I cannot find any replacements, would it be reasonable to cut the new springs down to the correct number of coils? The only problem I can see is that the original springs had half of the last turn tucked in to make the coil seat flat.
Any other suggestions?

Twins / clutch spacer and lock washer
« on: 01 February, 2021, 16:29:52 »
In the process of putting the primary drive back on the A50.
Now, Haynes manual is next to useless and the BSA WSM is not much better especially as no good pictures.

Spacer behind front sprocket, rotor, lack washer with "tang"on it and nut to lock it all on.

Clutch sprocket, clutch hub, then ?spacer and then lockwasher and nut. All fitted and chain aligns but:

My clutch thrust washer/spacer is a large flat washer around 3-4mm thick. The wsm mentions a dished washer.
Also I cannot understand how the lock washer locks. Its got 2 side flat bits and one longer bit on it. How does it engage in the shaft to allow it to lock?

The engine has been messed with many times before, so cannot assume that the correct bits are present.

Having said that, I have tightened all the nuts up very tight and the clutch operation appears to be fine and appears to work OK.

Shall I leave alone or is there something I have missed?

ps any pics would be useful

Twins / Well seal or blue hylomar
« on: 27 January, 2021, 18:19:09 »
Whatís the preferred gasket cement for the inner timing cover? Blue hylomar or Wellseal on the gasket?

Pages: [1] 2 3 ... 5