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Singles / B25 to B40
« on: 15 May, 2019, 11:49:28 »
I wonder if it would be possible to increase performance of a B40, by  fitting higher compression piston (9:1)
and the sportier cams 40-707. Has it been tried?

Singles / B25 front brake.
« on: 10 April, 2019, 16:19:36 »
my B25 front brake is poor, compared to the effective brake on my C15 SS.
The rupert ratio book shows diagram with the shoes in trailing position. the wrong way round.
I tried changing them around, but then the adjustment did not have enough range to allow free turning.
Whats wrong?

The Star and Garter / BSA 500
« on: 03 April, 2019, 06:23:41 »
Last year, I saw a large new van parked near my house, with the reg number - BSA 500.
I think it also had BSA painted on the side. I wondered what it was about.
I left a note under the wipers, that I was a BSA owner, hoping the driver would pop in to see me.
That did not happen.
I wonder if any member could solve this mystery for me?

The Star and Garter / turn indicators on bikes.
« on: 19 March, 2019, 06:48:58 »
I feel that hand signals for turning, on today's crowded roads, are not good enough, especially after dark.
(How many of you ride your BSA in the dark?)
Winkers are the only safe way. The action of the light going on and off, is equivalent to movement
in ones perception, is noticed. So, I have them on both my bikes.

This switch is available on Ebay for only £7, including post!  (I like to keep my spending on bikes low,
As a matter of principle. Why? I dont know!!
The switch has - lights on, main/dipped, left right winkers , hooter, and  lamp flash, (Or kill switch for the C15.)

The Star and Garter / bsa badge transfer. help needed.
« on: 06 March, 2019, 08:06:12 »
I am trying to sell a two inch 'piled arms' bsa waterslide transfer transfer. on ebay.
Price is £1 each, but ebay is charging £2 for each insertion, which only lasts for one, £1 sale!
How can I get round this?

The Star and Garter / speedo cable
« on: 26 February, 2019, 07:14:55 »
I have a C15 and a B25.
I ordered a new speedo cable on Ebay, but the speedo did not have the correct fitting for my bikes.
It had a smaller thread for the outer, and a smaller inner, with no square recess.
Is this normal, for use on modern bikes?

Singles / B25 speedo
« on: 21 February, 2019, 16:39:21 »
I just bought a speedo cable for my new-on-the-road B25.
It is reading double the actual speed. ie 120 mph at 60.
Does that mean its the wrong speedo?
The rear wheel speedo drive is the normal 2;1

Singles / BSA Starfire tank colour
« on: 20 February, 2019, 14:41:58 »
Any one know a colour reference for this Blue.

The Star and Garter / winkers
« on: 14 February, 2019, 10:19:53 »
I have winkers on my C15.
My problem is - I tend to forget they are on, and ride away, thinking only of the road ahead.
At 80 years old, my brain is shrinking!
I thought of a solution.
Two momentary switches on the handlebar, marked L and R.
A timing circuit to hold the winker on for - say 10 seconds.

Singles / rocker box leak.
« on: 14 January, 2019, 07:48:25 »
When I assembled my C15SS engine, I used the old rockerbox gasket, expecting I would need to dismantle again later.
I found the engine was fine. no further work needed, except -- leaking rocker box!!
To replace the gasket, the engine has to be removed. A long job, and I needed help to lift the engine.
Next time, I intend to replace the rockerbox studs with hex headed bolts. Then it can be removed with the engine undisturbed.
It should work??

The Star and Garter / my TT adventure - over 50 years ago
« on: 03 January, 2019, 08:05:43 »

Mick Reeves <>

In 1960, I had a BSA B33, 500 single. It had the standard output sprocket,
17 tooth I think. Someone gave me an 18 tooth sprocket, so I fitted it.
I quiet liked the over-geared effect, so I left it on.

I had a friend who was  grass track racing on a 350 B31.  He had high compression piston, 8 to 1, but it was for a B33, so he sold it to me.

I fitted it, but found that the engine was knocking badly. I reset the timing,
but it was no better.  I tried several times more, but the result was always the same. So Ė I ran the bike with the advance control set on full retard.

I ran this for about a year, when we decided we would go to the Isle-of-Man
For the TT.

I fitted a double adult sidecar, which meant I should have fitted a 16 tooth sprocket, but I didnít.

We loaded up the chair with a bell tent and loads of supplies so that it weighed a lot.  We set of early on Saturday, flat out at 60 MPH, and as we were 20 miles from Liverpool the engine died.

An old lorry stopped and gave us a tow, on a very short rope. Rather dodgy
Because I had no view of the road ahead. He took us to a bike dealer, who was
just shutting the shop for the weekend. We stripped the top end and found the exhaust valve lost its seal. The shop owner kindly reground the valve, and we were able to get back on the road.

We had missed the midday ferry, and travelled on the overnight sailing.
Landing at first light, we found a field, put up the tent and had something to eat. Then we set off to ride round the TT course. There were lots of solos doing the same, and shooting past us. The bike struggled on the climb to the top of the mountain, then the engine seized solid!

We parked up, then joined the spectators sitting on the high banks beside the track. After an hour, we decided we must try to remedy or situation.
We pushed the bike along the road (amid all the fast lads swerving round us)
and when the road started to descend, my companion jumped in the side car, and we coasted gently along.

We gathered speed of the steep bits, rather too fast, but I did not want to brake, but maintain maximum momentum for the less steep parts of the road.

I was rather amused to think what the spectators must have thought, seeing an old combo with silent engine, squeeling tyres, and passing some of the solos on the bends, and with my pal bending just his head, left or right to help the cornering!

We push the rig several miles back to our tent, and, in the long grass,
stripped the top end of the engine. Nothing wrong there?
We removed the primary drive and stripped down to opening the crankcase.
There was the problem. In the drive side case, a quarter segment of the inside
part of the casting, had come away, and jammed in the big-end!
Strangely, there was no sign of this on the outside of the case.

We reassembled the engine, without the offending piece, and gingerly
kicked the engine over. Seemed OK, so we started it. Yes, it seemed normal
So we took it on the road. We decided to never exceed 20 MPH and maybe
we might manage to get back home.  We kept this resolve during the week,
never exceeding 25 MPH.  After leaving Liverpool heading back to London,
we never exceeded our 30 MPH limit.   

Hallo, what happened to the 20 MPH rule?
Well, by half way home. We were back to flat out at 60 MPH.

After that, I was lazy and as far as I remember, the case was never replaced.
I learned that the 8/1 piston we had been running on, was 11/1 , meant for alcohol fuel.!!

I later fitted a Superocket 650 engine, then a featherbed Norton frame,
 and the forks, wheels etc. It was another bike altogether, but still on the
B33 logbook and registration!!

I wish I still had it....

The Star and Garter / Old geezers?
« on: 20 December, 2018, 08:56:21 »
Is this you??

Singles / bike wiring.
« on: 11 December, 2018, 06:49:11 »
I would like to rewire my C15. It has a new generator system, and the wiring is rather a mess, with multi colours on each wire end.
Do modern bikes still use the old Bullet connecters? Or what?
I now have LED headlights, and would like to replace all lights with LEDs. Difficult!

Singles / how to achieve one kick starts (almost) every time.
« on: 09 December, 2018, 12:02:07 »
Run your engine and set the tickover, with idle screw, and throttle stop.
With a warm engine, it should start again with throttle shut.
For cold starting,- try a carb tickle, and raise the throttle stop half a turn.
Try this with variations to find the best for your machine. My C15 and B44 like 1/3 turn on the stop screw, and no tickle.
Note - Leave  the throttle fully shut when starting.

Singles / C15 ss springs
« on: 09 December, 2018, 10:33:52 »
I would like to fit softer springs at the rear. Are they available?

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