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Messages - Phil C

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Singles / Re: Another sppedo
« on: 02 September, 2018, 10:19:20 »
Thanks Adrian. I have OBM.  Phil.

Singles / Re: Another sppedo
« on: 01 September, 2018, 21:24:14 »
Any very rough idea of cost?

The Star and Garter / History of a motorbike.
« on: 01 September, 2018, 19:22:08 »
I am fairly new to this hobby.  About six months ago I bought a 1965 B40F, and I'd be interested to know something of the bike's history. Is it very difficult/expensive to find out, for example, who owned it, where and when?  Phil.

Singles / Another sppedo
« on: 31 August, 2018, 16:07:11 »
The speedo on my 1965 B40F appears to be ridiculously optimistic. I'd like to keep it, but how do I find out why it thinks I'm going a lot faster than I am, and then correrct it?   Phil.

Singles / Primary chaincase breather?
« on: 29 August, 2018, 11:07:25 »
On my 1965 B40F I have recently got rid of the chain oiler, replacing it with a nyloc nut and fibre washer. Julian S on this forum mentioned putting in place a breather. Rupert Ratio (p.125) advises getting rid of the oiler and replacing it with a nut/bolt and fibre washer, but does not at that point say anything about a breather. However on p.165 he says the primary chaincase (in isolation from the engine breathing system) allows expansion and contraction of the air within it via the chain oiler and/or a chaincase inspection cap with a small drilling and steel baffle plate.  So it sounds as though , as Julian suggested, I might need a breather of some kind, now that I have closed off where the oiler was.  Being a novice, I don't really understand the why a breather isn't a  leak!  Could someone (Julian and/or anyone)  please explain and advise ?  Thanks.  Phil.

Singles / Re: Oil leak
« on: 29 August, 2018, 10:57:15 »
I'm not sure the rear chainguard is preventing me seeing where the leak is coming from.  My best view (but still not good enough) seems to be from ground level on the other side of the bike, ie the right hand side, the off side. The rear chainguard does, however, prevent me poking a finger behind where the alternator wires leave the primary chaincase in order to find out (here's a novice's question): when the alternator wires leave the primary chaincase, and before they come into view again above, just in front of the rear chainguard, are they in open air?  I put some silicone sealant of the grommet on the inside of the chaincase and am just wondering if that is what has almost, but quite, cured the leak. Could the leak be there?  Phil.

PS I will start a separate post about breathing.

Singles / Re: Oil leak
« on: 28 August, 2018, 18:17:58 »
I've avoided removing the rear chain guard as it's a bit longwinded getting decent access to the front securing bolt.

Singles / Re: Oil leak
« on: 27 August, 2018, 23:40:35 »
Thanks again Julian.  Regarding whether or not I need to fit a breather for the primary crankcase, now that I've blocked off where the chain oiler was, you say "maybe maybe not". Does it depend on something else, or are you yourself not certain? Any other opinions on this, anyone? Has anyone else blocked off the chain oiler, and if so did you fit a breather?   Phil.

Singles / Re: Oil leak
« on: 27 August, 2018, 21:23:09 »
Thanks Julian. Here is your post from 6 July:
Looking at the 3 streaks of oil on the back of primary chaincase I would check that the alternator cables are a good fit in the  rubber grommet and if in doubt a dob of silicone, that no oil has been passing along the chaincase screws at the top of the cover -  tell tale being oil on the screws when you removed them. 
If not already fitted I would replace the chaincase screw in plug with one with baffled breather, or drill a small breather hole in existing one. You can get a bit of pressure in there especilly if the chain oiler is blocked.

Where is the chaincase screw-in plug? Presumably not the Allen screw that is removed to drain the case?

I notice Rupert Ratio advises replacing the chain oiler with a nut, but says nothing about a breather.

It seems that something I've done has very much reduced the leak, but not quite totally stopped it. Could be one of the new seals I fitted?  Could be the new gasket on the circular plate?  Could be the silicone I put on the hole where the alternator wires leave the case? 

Any other thoughts, Julian?  Or anyone?



Singles / Re: Oil leak
« on: 27 August, 2018, 17:46:44 »
Thanks Julian, but could I, as a novice, ask you please to explain in idiot-proof terms:

1. When you say the circular oil seal plate/chaincase joint, do you mean via the gasket at the outside diameter of the plate behind the clutch (aluminium plate about an eight of an inch thick and about, say, five or six inches in diameter)? I cleaned that plate and fitted a new gasket. Or do you mean the oil seal in the middle of it? I renewed that.

2. You say the oil might be running round the edge of the recess from the plate above. Could you explain please? What recess in what plate above?

3. Do I need a breather for the chaincase?

Thanks very much.  Phil.

Singles / Re: Oil leak
« on: 27 August, 2018, 16:22:51 »
I wonder if there's anyone there who has been following this. Anyway, here is an update, and of course a plea for help. Having replaced the oil seal behind the clutch, and the one at the gearbox sprocket, I have put everything back together, refitted the primary chaincase cover, and today took the bike for a run, just eight miles. The leak is much, much less, but I see looking under the bike that it is still there. Please see the attached photo, taken from the right hand side side of the bike, so the front of the bike is to the right of the gearbox drain plug. Any ideas please as to where the oil is coming from? (you might remember the leak only happens when the engine is run.)    Phil.

Singles / Re: Clutch chainwheel play
« on: 26 August, 2018, 17:53:01 »
Thanks, Tim. I've put it back together and taken it down the road and back and it seems to be working okay. You telling me yours has been fine for two years is very reassuring.  Phil.

Singles / Re: Chain oiler replacement
« on: 23 August, 2018, 14:11:10 »
Yes, BSF not BSW, thanks Julian, I must have misread my Zeus book.

I've always been a bit surprised that Zeus books don't include Cycle threads.


Singles / Re: Chain oiler replacement
« on: 23 August, 2018, 09:57:03 »
Good idea, thanks.  Does anyone know what the Allen screws' thread is:  Whitworth or Cycle?

Singles / Re: Chain oiler replacement
« on: 22 August, 2018, 19:24:06 »
I've done that, with a nyloc nut, but thought the oil would simply travel along the thread and out. But then I guess no more than would escape via an oiler.  Thanks Julian.  Phil.

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