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Messages - Calum

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Singles / Re: B33 none return ball valve
« on: 27 February, 2021, 21:59:37 »
I re-seat check valves with balls in them at work quite a lot, and test them up to 5-600psi... I find case hardened balls very hard if not impossible to mark - stainless ones will get a flat on them from the punch so if this is the case I will use one to form the seat and then put a fresh one in.

The seat for the ball wants to be very narrow, pretty much a sharp edge to start with. Not sure how they wear on our bikes but seats can broaden over time which reduces their effectiveness.

Singles / Re: B33 plunger oil tank
« on: 24 February, 2021, 18:09:54 »
Definitely two fibre washers on a banjo.

The washer on the nut at the bottom, I would guess without having mine apart, that the washer sits at the top of the male thread, and seals inside the nut, so has to sit down inside the female thread.

Leave the PTFE tape in your toolbox!

Singles / Re: B31 Piston
« on: 19 February, 2021, 16:44:14 »
That seems quite a difference to me, but it's not something I have ever looked at on a bike engine before to be honest.

Out of interest have you measured the weight of the con rod, gudgeon pin etc too? Obviously the big end of the con rod is a rotating mass, whereas the little end of the con rod is a reciprocating mass but it might give you an idea of the change in reciprocating mass as a percentage. You can weigh only the little end of the con rod by holding it horizontally by the big end with the little end on the scales/spring balance or whatever you are using. I'm just thinking the rod is quite a lot heavier than the piston so overall the weight might not change all that much. I think balancing the crank is covered in the service sheets from memory?

BSAOC International Rallies / Re: Trailering a motorcycle to europe.
« on: 18 February, 2021, 13:28:29 »
Now we're talking. Brilliant  8)

BSAOC International Rallies / Re: Trailering a motorcycle to europe.
« on: 18 February, 2021, 12:47:56 »

Anyway, politics aside, and at the risk of getting shot down further... surely the easiest solution here is just to ride the thing  ;D

I guess that is really dependent on where you're riding from/to Calum.

Popping over from Kent to Belgium for the weekend might be pleasant. However, the prospect of riding from Cornwall to Andorra (with kit for 10 days) doesn't strike me as being too practical.

Each to their own! It's certainly doable, many have done world trips on old machines and continut to do so. I am of the opinion that they were built to be ridden, although I do appreciate everyone has different tolerance levels of comfort, noise, vibration... the list goes on!

BSAOC International Rallies / Re: Trailering a motorcycle to europe.
« on: 18 February, 2021, 12:44:25 »

There are thousands of BSAOC members and their personal needs and enjoyment are/is as varied as their faces.  Personally both myself and my wife intend to ride our bikes to events until we are no longer physically able to do so.  At that point we may consider a trailer.  Until then we will enjoy the company of all BSAOC members regardless of how they get their BSA to an event so long as their van/car/trailer does not get in the way of camping.  We are all getting older or have other limiting issues and as we cannot get spares or parts re-engineered we are the limiting factors.  So, participate don't vegetate.


Yes indeed, that comment was fairly tongue in cheek really but it would solve the issue ;D as you say, variety is to be celebrated! It would be boring if we all did the same.

BSAOC International Rallies / Re: Trailering a motorcycle to europe.
« on: 18 February, 2021, 09:46:10 »
Since Brexit. They are out to get us. The goal posts are moved. My son who is to go to the international with me was reading the article in one of the latest bike mags.It seem people are already having problems.

Don't make me laugh! These situations were always going to happen, and yet people still voted to leave. Nobody is out to get us, and no goalposts have moved...

Anyway, politics aside, and at the risk of getting shot down further... surely the easiest solution here is just to ride the thing  ;D

The Star and Garter / Re: Electric heaters
« on: 16 February, 2021, 12:39:11 »
I discoved my new shed has a slight leak from the roof. Put the heater on today to dry things out. So now all the moisture in the shed has vapourised and condensed on the Spuer Rocket and B28. They both stared the day bone dry and are now literally dripping wet!
I'm leaving the heater on till thay are dry so will have spent more on electricity than petrol for these bikes in the last 6 months ;)

First job is fix the leak! Then perhaps a dehumidifier but good ventilation should see it right. You missed your chance with the cold spell we've just had - it was incredibly dry!

Twins / Re: A50 primary chain adjuster sealing screw
« on: 16 February, 2021, 09:56:47 »
If 3BA is nearly there then it might be 8-32 UNC which is fairly close, a little coarser. Diameter almost identical but tpi of 32 where as 3BA is almost 35

It's quite hard to measure a female thread so small!

The Star and Garter / Re: Electric heaters
« on: 13 February, 2021, 10:57:16 »
How well insulated is the garage? With the weather as cold as it is at the moment any drafts or lack of insulation will result in a massive heat loss. Currently -4C here outside according to the infrared thermometer, so 5C would be a fair increase in temp! A fan on the roof to blow the hot air down can also work wonders if you think the high ceiling is a problem.
Currently planning out my workshop which I'll hopefully be building this year. Pretty certain I'm going to be putting in a small stove for all year round tinkering!

Singles / Re: YB 34 Looking for it's history
« on: 09 February, 2021, 18:13:01 »
Can't help I'm afraid but what a beautiful machine  8)

The Star and Garter / Re: What a shame
« on: 19 January, 2021, 12:21:19 »

Isn't there a way to get the number protected so that it cannot be sold or is that only for Age related numbers?


I think you can, if you transfer it off the vehicle and back onto it again I believe it then becomes non transferable but I'm happy to be proven wrong!

The Star and Garter / Timmelsjoch Motorcycle Museum
« on: 18 January, 2021, 19:29:36 »
I have just heard that this museum has burnt down, doesn't look like anything has survived :'(
I visited back in 2016, purely by chance after chatting to a German guy with a Matchless. We were in our Rover P4. I don't think the museum had been open too long, perhaps less than a year. Amazing collection of bikes, a shame indeed.

Singles / Re: Wiring under the rear mudguard, how is it secured?
« on: 01 January, 2021, 18:22:44 »
My plunger has a hinged rear guard. My wiring is clipped to the underside with stainless P-clips which are actually bolted through the mud guard itself with small stainless machine screws. The purists may scoff, but it's safely and securely attached, and I don't think they look that bad to be honest!

Singles / Re: need help to buy a small new lathe
« on: 01 January, 2021, 18:15:54 »
In my opinion, you'd be better to get an old British built lathe. For your budget, buying sensibly, you could buy a very good machine indeed. Old British ones tend to be more heavily built but easier to repair and maintain, and generally more robust in my opinion. Don't forget a lot of the modern machines are set up primarily for metric work, rather than imperial. Personally I find it easier working on an imperial machine for doing imperial work. Dials on a new machine may well be in both English and metric, and gearbox equipped machines might make imperial threadcutting relatively simple, but I must admit I haven't looked much at many modern machines.

As for bench top mounting, how big? A Drummond or Myford ML4 is a big enough size for most jobs on a motorcycle and spares and accessories reasonable. Boxford another good brand of small machine.

How often you intend to use it also affects what features you want to spend your money on. I use lathes every day and there's several features I wouldn't live without on a larger machine. On the other hand there's some features I've never used. If you intend on doing a lot of thread cutting see if you can get a machine with a Norton style thread cutting gearbox as it'll mean much less work changing gears to get the required TPI (obviously when working with CEI/BSCy threads you don't need to change often!). Another feature not always on smaller machines (certainly old ones) is power cross feed - not necessary but nice to have if you do a lot of facing work. Lots of older machines have a T-slotted saddle top which opens up options for simple milling work with the addition of angle plates or milling slides. If you can't justify the space or money for a separate milling machine it offers more options.

I too am in the market for a new lathe for my soon to be built home workshop, and I'll be going old and British. I'm still undecided how big to go - whilst I am a little pushed for space I am tempted to go bigger if I can get the power issue figured out, as I would like to start doing more work on my own.

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