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Messages - Phil C

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46
Singles / Re: Centre stand (1965 B40F)
« on: 25 April, 2022, 17:27:34 »
When you say the uppermost part of the hole is okay, do you mean the bit nearest the vee, or the bit that is uppermost when the stand is folded up?  Phil

47
Singles / Re: Centre stand (1965 B40F)
« on: 25 April, 2022, 15:24:44 »
The centre stand is now off the bike. Going by what I can see, and from advice received on this forum, it appears what's needed now is:
1. Build up (with weld) the surface that acts as a stop. By how much I don't know, as I have the bike on its side stand rather than raised up, which would be ideal so that I could them offer the stand up at the correct angle and judge how much weld would be needed. I might need to use guesswork and trial and error. Any thoughts please? (I've no welding gear so might have to take it to my local friendly blacksmith.)

2.  Correct the elongated pivot holes. Basically they need bushing, so I'll have to ask the blacksmith to bore out the holes with a slot drill on a milling machine, turn up some bushes to fit, braze them in place, and finish the holes to size. Need to think about the position of the hole centres.

3. Cut off the extensions a previous owner appears to have welded onto the bottoms of the legs.

Any thoughts on any of the above would be appreciated. Thanks very much.

Phil




48
Singles / Re: Centre stand (1965 B40F)
« on: 25 April, 2022, 13:23:03 »
Thanks so far everyone. I'm taking the stand off the bike, which is pretty straightforward except one of the pins won't come out. Used wd40, drift punch, hammer, hot air gun, etc, but so far no joy. I'll get it out eventually and can then have a good look, think, and - crucially!  - discussion on this forum.
  Phil

49
Singles / Re: Centre stand (1965 B40F)
« on: 25 April, 2022, 08:59:05 »
Thanks very much, spaceman. I'll have a look at mine today - then it will probably be clearer to me how exactly it operates and what I can do to repair it. I'll report back.

Meanwhile, any thoughts on the jack/ lift issue?

Phil

50
Singles / Re: Centre stand (1965 B40F)
« on: 24 April, 2022, 19:21:26 »
But actually, there must be a better way than having it on the side stand? Do I need to buy some kind of jack, so that I can see the centre stand's operation with it held up clear of the ground somehow?

Phil.

51
Singles / Re: Centre stand (1965 B40F)
« on: 24 April, 2022, 18:56:54 »
Yes, thanks Julian, clearly mine is at the wrong angle, so presumably there's wear at the top of the legs and/or the lugs on the frame. Hopefully it will be at the top of the legs, as that will probably be easier to fix than the lugs on the frame. I'll put the bike on its sidestand and look to (carefully, so the bike doesn't fall over!) remove the centre stand to have a good look at it.

Phil

52
Singles / Re: Centre stand (1965 B40F)
« on: 24 April, 2022, 17:49:13 »
Thanks everyone.

When I put the bike on the stand, both wheels are just touching the ground. The front one can be revolved by hand but it is rubbing on the ground. So that, I guess, means either the stand is NOT too long, or maybe the angle it sits at when in use is wrong? Please see photo. Any thoughts please?

Phil.

53
Singles / Re: Centre stand (1965 B40F)
« on: 24 April, 2022, 14:02:29 »
I was wrong about the specified part number for my bike. Looking again at the BSAOC website, part number 4703 is for the 1965 B40. But the 1965 B40F (my model) is apparently allocated centre stand 4710.

Both the legs on mine have 41-4705 embossed on their inside. So, going by the info kindly supplied by Julian, I have two offside legs for 4703 (1965 B40.) So I've got the wrong thing. It's all very odd.

I didn't even know there was a 1965 B40 distinct from a 1965 B40F. Was there?

Confusing, eh?!

Phil

PS Adrian, re side stand, thanks for that - it's at the wrong angle? I'll have to look into that.


54
Singles / Re: Centre stand (1965 B40F)
« on: 24 April, 2022, 12:06:12 »
Morning again,

Further to my previous post, I've just been out to the garage and had another look at my centre stand. It is embossed "41-4705". Looking at the parts info on the BSAOC website, my bike should have a 4703. So it looks like I do have the wrong one fitted. I had a bit of a look around the info on thew website to see if I could establish which model the 4705 was meant for, but I couldn't find it.

Interestingly (well, to me anyway!), looking closely at the stand, it looks like it might have had foot extensions welded on at some stage (see photo), unless that's just the way it was made. Looking at photos in RR I think it's probably been extended, but I'm not certain, esp as I'm not sure what model 4705 was meant for and exactly what its feet should look like.

If anyone has any relevant info, eg what model the 41-4705 was meant for, and whether mine has had its feet built up, I'd be very interested. 

Phil

55
Singles / Re: Centre stand (1965 B40F)
« on: 24 April, 2022, 10:44:48 »
My B40 is 9" and my C15 is 8", the difference is due to the different sized wheels: 18" vs 17"
Spaceman, Thanks very much for the info and obviously I   absolutely believe the figures you gave me, but didn't know whether the stand on your bike was standard, or difficult to use, or what, so just thought I'd ask for further comments. Sorry for any offence, and thanks again. I had looked at Rupert Ratio (vol 2), and read the relevant bits, hoping to find sizes, but stupidly hadn't noticed that the photo (p. 163) has a tape measure on it! I'll also check mine for the part number which is supposed to be cast on the inside of the legs ('40' for C15, '41' for B40, which I imagine has caused misunderstanding occasionally over the years.) Then I guess I'll shorten the feet, and have a look at the spring - thanks for pointing that out, Dave.
Phil

56
Singles / Re: Centre stand (1965 B40F)
« on: 23 April, 2022, 20:41:49 »
So would you - anybody - say my centre stand is an inch longer than it should be? Can anyone else give dimensions?

Phil

57
Singles / Centre stand (1965 B40F)
« on: 23 April, 2022, 17:39:01 »
Evening everybody,
As it's so difficult to get my bike onto its centre stand, I'm just wondering if it's the correct one for the bike. Its design can be seen on the attached photo. I'm holding it down slightly from its at rest position in order that you can see it better. It measures 10 ins from the pivot centre to the bottom point of the foot. Does anybody know, please? Thanks in advance.
Phil

58
Singles / Re: Kickstart gasket
« on: 23 April, 2022, 15:22:55 »
Sounds like you got a kickstart shaft oil seal? Not sure if your bike should have one or not. Maybe take a look at a parts diagram?

Phil

59
Singles / Re: Oil leak at front wheel
« on: 22 April, 2022, 17:42:31 »
Just to wind this up: after removing the forks, stripping and checking them, renewing the oil seals, checking the brake over, and putting it all back together again, the leak hasn't recurred. So although I'm not absolutely sure where the leak was, I've serviced the forks, had fun, learnt a lot, and - hopefully - cured the problem. Many thanks again to all those who answered my many questions. Phil

60
Singles / Re: Rear mudguard - beading
« on: 10 April, 2022, 19:44:01 »
When fitting rubber beading to a metal edge, is it good to use a smear of silicone sealant or something, which might make it easier to remove if necessary at some time in the future?

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