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Twins / Re: A65 sludge trap thread.
« on: 09 February, 2018, 16:39:37 »
I've never taken both out as the tube comes out of one end and you flush it out from there surely? Mind you, it was 12 years ago that I last took one out. One of the benefits is the new plugs have a socket head not that pathetic slot, so next time will be much easier.

The Star and Garter / Re: Mororcycle Insurance Advice
« on: 09 February, 2018, 16:34:28 »
To clarify, I'm assuming we are talking about our BSA's all of which were made before 1978 so an MOT won't be required by law after May 20th 2018.

Singles / Re: B25 gearbox assembly
« on: 08 February, 2018, 12:33:18 »
My advice would be to junk the Haynes Manual as for the unit singles it is quite frankly pathetic!
Get yourself a copy of Rupert Ratio Unit singles manual vol 1 the engine which are back in print now:-

Vol 1 23.95 inc uk postage
Vol 2 25.95 inc uk postage
Vol 3 back in print soon...
All available direct from Ratio Publishing.
Authors signed copies only available from
or email

They cover everything you will need to know. No rebuilder of unit singles should be without one!

The Star and Garter / Re: Mororcycle Insurance Advice
« on: 08 February, 2018, 12:24:03 »
I think some of us are guilty of a bit of moral panic here. Contrary to popular belief, Insurance companies are not always looking for ways to get out of paying out on a claim. Provided the vehicle is roadworthy, whether or not, after May 20th 2018 it has an MOT, it is involved in an accident etc. and you make a claim, they will pay out without any issues. They can't and indeed won't expect us to get an MOT just to prove that it was roadworthy on that particular day and at that particular mileage.
Anyone really concerned about this should contact their Insurance provider and get clarification from them, rather than relying on hearsay within our community.

Singles / Re: 1972 B50SS tyres
« on: 03 February, 2018, 16:16:50 »
With all due respect that's rubbish! More miles are ridden in a straight line than cornering and we are all usually upright when powering away which is why the crown wears out quicker on the rear than the front! I suppose I could ride all the time doing that stupid 'essing' trick some modern bike riders do when they are 'supposedly' warming up their tyres but I don't want to look like a total idiot as they do.

Singles / Re: 1972 B50SS tyres
« on: 02 February, 2018, 15:51:46 »
Roadriders are great but after a fairly low mileage the rear 'flattens out' before the front and this creates a nerve inducing wobble of the 'Oh dear I think I have a puncture' variety. Bear in mind re the front, a BSAOC member  fitted a TT100 to his B25SS front wheel and found the knobbly bits on the outer edge caught on the wire stays.  The Roadrider outer edges are also greater than the original K70 or Avon SM so you'll find they are probably pretty close. Nevertheless, when removing the front wheel, you need to deflate the tyre to get it past the mudguard stays.

Twins / Re: A65 Sump guard OIF
« on: 31 January, 2018, 12:28:57 »
My answer would be, only if you use it off road.  I have one on the B25SS and if you fit an SRM or cheaper pattern sump plate with magnetic drain plug, the sump guard wont fit. Probably the same on the OIF Twins.
They fitted them as standard to the Firebird Scramblers, as the American's apparently used them on and off road.

Twins / Re: Bike Height ?
« on: 25 January, 2018, 12:51:14 »
Got the T shirt on that one. I fitted the one from my Thunderbolt having sawn the bent tang off onto my B25SS (Currently For Sale see the February showroom when its out). It was lower but never sat well against the frame so much so that a slight nudge would push it off the stand.
So, thinking that B25SS is a 1971 only model, I assumed the same stand without tang but plus small footpeg would have been used so 'modified' the aforementioned 1971 Thunderbolt one and and fitted that. It works alot better, so my assumptions probably bear fruit!

Twins / Re: Bike Height ?
« on: 24 January, 2018, 15:18:07 »
The 1971 centrestand is 1/2" to 1" longer in the leg length than the later 1972 onward versions, hence the front wheel pointing skyward. Believe me they are a pig to get on the stand even with the tang and even worse to lift off.  Also, whilst the engine is out, check the pivot holes in the frame brackets havent worn oval. If they have, like mine, they make applying the stand even worse. At some point in the future, if and when I do a refurb, I will be replacing these brackets with some thicker ones. Re the length see how you get on when all back together and if a problem get a later (shorter one).

Twins / Re: A65 problems
« on: 21 January, 2018, 14:09:08 »
Correct. The one with the hole goes on the drive side, cant remember which way round, the manual will tell you. One thing re the Devimead conversion vs the SRM is the OD of the oil seal over the end quill (fits into the inside of the inner cover). This OD is larger than the SRM and can result in blowing out due to the larger surface area, so make sure it is held in securely via centre popping around the edge. If you found it hanging on the quill when you dismantled it, its already done it. (Dont ask me how I know this)!!!! :-\

The Star and Garter / Re: 60th Anniversary Calendar
« on: 21 January, 2018, 13:53:11 »
How did he get in there! I must have a word with the printers!

The Star and Garter / Re: dvla new commitie
« on: 21 January, 2018, 13:50:52 »
I agree, so maybe when a bike is being sold without documents, the price paid should reflect this. Trouble is too many people get carried away and pay not far off what a running example with docs is worth. We all need to be sensible when putting a value on potential purchases and not go near or be very prepared to walk away if a realistic price cannot be agreed.

Twins / Re: Where to fit an external oil filter on my A65L (pre OIF)
« on: 16 January, 2018, 17:23:03 »
Hi Charles,
I too would like more technical articles. However, we are grateful to all those who do contribute as many of us lead busy lives and finding time isn't always that easy. However, I will put an appeal for more in the March edition.

Thanks also to Bess who has contacted me and will be writing a feature in the future, as time permits. Much appreciated!

Twins / Re: Where to fit an external oil filter on my A65L (pre OIF)
« on: 15 January, 2018, 13:45:44 »
This is for Bess,
Would you like to share this with all members via The Star? If so, would you send me, by email, the pictures and if you have any sketches with dimensions, that would be great, with a brief write up of how you did it? It would be really appreciated.

Twins / Re: A65 OIF Wiring
« on: 15 January, 2018, 13:38:41 »
Yes, they connect into the main loom and headlamp loom at the point above and just forward of the engine. I tried to be clever and fitted them in the headlamp itself but there isn't enough room and it was a bloody nightmare. So I reverted back to the factory method!

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