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Messages - Bess

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Which BSA do you ride? / Re: A50
« on: 24 March, 2017, 20:31:35 »
Hi Guys,
              Thanks for thumbs up. I decided to move away from standard builds for a change and build a fun ride. I thought it would be cheaper but I'm not so sure, my latest designs are eating money :-\ :'(

Twins / Re: Made in England decal?
« on: 23 March, 2017, 17:25:16 »
Hi Andy,
              I remembered another forum talking about this very subject, here's the link:

Twins / Re: A65l ignition warning light
« on: 23 March, 2017, 14:25:04 »
Hi John,
              I didn't realize the 63 model had an oil tapping on the casing.

I have a A50 without the oil pressure tapping, I connected one warning light for ignition the other for main beam. As you have an oil pressure switch it maybe worth wiring the ignition and oil warning lights to act as Julian mentioned.

Best wishes...

Twins / Re: A65l ignition warning light
« on: 23 March, 2017, 11:08:46 »
Mine stays on indicating power to ignition. When I turn ignition switch off, light goes off.

Best wishes..........

The Star and Garter / Re: London Today
« on: 22 March, 2017, 18:43:27 »
Hi All,
         I hope nobody was personally affected by the events today in London, my thoughts are with the victims. Does the club support in any way?

Twins / Re: Engine tear down
« on: 22 March, 2017, 09:48:05 »
     My criteria for a rebuild is obvious engine noise related to the crank bearings, main and big ends. If so, I fit a pressure gauge and if am happy with the oil pressure when the oil is warm I continue riding. The engines I've stripped have had about 50% of the sludge trap filled with muck which did not impede the oil flow.

From memory the oil pressure switch operates above 5 psi and the oil pressure relief valve is set at 50 psi.

Best wishes....

Twins / Re: A65 - Front wheel spindle
« on: 20 March, 2017, 12:15:31 »
Hi JulianS,
                 Thanks for the reply, interesting findings, lucky I haven't got the issues like the chap in Canada but reading through and looking at the photos I had an epiphany.

I measured the metal between the tube and the spindle clamp. The counterbored slider has a length 0.780" the other has 0.650", the depth of thread is longer for the clamp bolts I expect.

I will be using the sliders I have using allen screws for the high tensile strength, unless I can source  new (that's doubtful). The other issue is that the gap between the clamp and slider is slightly bigger on the non counterbored sliders. Cannot determine the difference with the clamps.

Also now need counterbored clamps to fit the correct sliders on the A50.

I have sourced the correct spindle so the original problem should be solved after I fit it.

Thanks for your input, learnt a little more for the autojumbles.. :)

Twins / Re: A65 - Front wheel spindle
« on: 19 March, 2017, 17:46:36 »
Okay, that changes things. The A50 has the counterbores the 2 A65's do not.

All three sets of forks have been rebuilt from scratch with new items corresponding to all part numbers from years 1969 to 1970 using the fork sliders with and without counterbores (slider part numbers 97-3641 & 97-3645).

My guess is that the counterbores are added to the fork sliders because they have been built as per the diagram attached. Maybe the fork sliders are the same for other models but with different internals.

I would value your opinion...

Twins / Re: 1971 A65L plain main bush
« on: 19 March, 2017, 16:44:16 »
Hi Caulky,
                If it is within specification and undamaged leave it. The roller bearing alignment should be fine unless the crank journal on the drive side is under tolerance, sleeving or the use of loctite should solve that. 

Clean the sludge trap, reassemble and rotate the crankshaft, if it does not rotate freely you have an issue that will need investigation.

Best wishes.....

Twins / Re: A65 - Front wheel spindle
« on: 19 March, 2017, 15:49:34 »
Thanks JulianS,
                         My arrangement is the same as yours, with the lug not fully engaged and a gap.

Image j02 show the gap, image r01 on a A50 which I think is the longer spindle and image t01 I welded additional and turned down to suit.

   It's very likely I will buy and fit the 7 1/2" shaft, however my investigations are throwing up part numbers 37-2057 and 37-3582 are identical. Do you know if this is true?

Best wishes

Twins / Re: Single seat on a A65 Thunderbolt?
« on: 19 March, 2017, 10:58:23 »
Hi Andy,
              Your welcome.

I wanted a short seat, purchased an old A65 seat from ebay. Cut about 5-6 inches from the middle and welded the ends back together with two bolts underneath to link up with the original lugs on the frame.

Twins / A65 - Front wheel spindle
« on: 19 March, 2017, 10:48:28 »
     Does anyone know the differences between the following spindles:

* 1968 part number 37-2057
* 1969-1970 part number 37-1641

I have put together forks, brake etc as per the 1968 TLS but the lug on the fork that fits into the TLS plate only enters partway. My thinking is that changing the spindle is the best option but I don't want to spend the cash if I'm barking up the wrong tree.

Best wishes...

Twins / Re: Differences between A65 engines?
« on: 18 March, 2017, 22:24:06 »
    My recollection is that the 1965 head rear bolts are 5/16 not 3/8.  The rocker cover studs are smaller as the head steady is connected to the head not the rocker cover.

Singles / Re: RAF WD B40 Rebuild
« on: 18 March, 2017, 21:57:24 »
Wow, looks good.

Who cleans the surroundings?

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