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Messages - L.A.B.

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British Bikes / Re: Royal Enfield Model D
« on: February 11, 2018, 10:06:43 PM »
I always like to lift the seals and see just how much (or how little) grease is in a bearing. Here we get SKF brand made in China and this is one I recently purchased to put in a front wheel. How long do you think it would have lasted at 60 mph?

Initial grease fill
Super-precision bearings operating at high speeds should have less than 30% of the free space in the bearings filled with grease.

Sealed bearings are filled with a high grade, low viscosity grease that fills ~ 15% of the free space in the bearing.

Identify these bikes! / Re: Ridged frame
« on: February 08, 2018, 07:38:21 PM »
28974 should be 1952. According to the '52 parts book, the same frame was used for the 5T, 6T and T100, so unless one of our forum members has a copy of the factory records for that period then I think you would probably have to get in contact with the records section of either the VMCC or TOMCC to find out that information for which you may have to either join the club or pay a fee as a non-member.

Identify these bikes! / Re: Ridged frame
« on: February 08, 2018, 12:38:33 PM »
Thankyou for your reply’s. Will the frame numbers be on the headstock?

Yes, it should be on the left-hand side of the lug where that area of rust is.
Unless it's been ground off, for whatever reason.  :-\

Identify these bikes! / Re: Ridged frame
« on: February 08, 2018, 11:40:10 AM »
It appears to be a rigid (not 'ridged') Triumph 5T, 6T, T100 frame from approx. '52 - '54 with certain parts cut off (and others added).

What appears to be F1910+ is very likely to be the lug casting number and not the 'frame' number.

British Bikes / Re: Can anyone identify this motorcycle?
« on: January 31, 2018, 10:16:13 AM »

British Bikes / Re: Simple Newbie Question -OiF 1972 T120
« on: January 22, 2018, 09:23:32 AM »
I'm doing a full oil service on my 1972 OIF T120, all looks straight forward however where do you drain the Primary case - is it the adjuster bolt?

Section C3, & Fig.C4. (or A12 Fig.A12)

The Classic Biker Bar / Re: 1939 ISDT
« on: January 19, 2018, 11:04:50 AM »
It looks like he was on a works provided BSA Goldstar/Silverstar (not exactly sure what as it appears to be some sort of factory hybrid possibly).

It is believed that all the 500cc were M24s with the exception of 2 bikes in the CSMA team: Fred Perks rode a M23 Silver Star and Les Ridgeway a M23 engine in a M24 Gold Star frame. (see Classic M/C Dec 1984)

British Bikes / Re: What's It Worth - '63 Trophy TR6
« on: January 16, 2018, 03:12:06 PM »

What I do know is it's mainly a 1963 bike with some early 1970's bits here and there.

Well, the engine is '69 or later, as is the front brake ('69-'70).

Still worth a few quid, though.

The registration (7318 PF) if transferable, has some value.

Japanese Bikes / Re: Need help identifying these wheels
« on: January 02, 2018, 07:30:45 PM »
They look like aftermarket CMA '5-spoke'.

The 'writing' when enlarged I believe is "MAX DIA(meter)" (can't read the dimension) .

British Bikes / Re: Oil holes missing
« on: November 09, 2017, 04:50:19 PM »
My first (of what could eventually be many) questions is:-
On rebuilding the engine bottom end, I have fit new crank bearings and big end bearing shells, the manual shows a small oil hole in the top of the conrod, just above the big end, and a matching hole in the new bearing shell. Mine doesn't have these.

That would be correct for '59, as the conrod holes were introduced with the double-speed (6-start) oil pump and high-pressure rocker oil feed on the 750 Atlas during 1966 from engine number 116372.   

Secondly, I decided to carry on working on the cylinder head, which has new valves and guides, and most of the bits seem obvious apart from the four half circular pieces in the picture below. Could anyone enlighten me as to what these are and where they go? they were in a bag with the exhaust valves, springs, collects, etc but they seem to big to fit in the head area.

They look like Girling shock absorber collets.

British Bikes / Re: BSA B40 Headlamp Bulb.
« on: November 06, 2017, 11:29:37 PM »
The bulb that came with the bike was a Lucas 35/35W bulb. When you turn the headlights on, one filament lights on dip (dim glow) and when you switch to main, both filaments come on and you get a reasonably bright light.

The bulb I ordered was a 60/55W version (Lucas LLB472). When I fit that, on dip I get one filament lit but it isn't really any brighter that the 35/35W bulb. On main beam, only the second filament lights but gives a bright light.

From the description, it sounds very much like one feed wire and the earth were incorrectly connected to the bulb in both instances.

Both main and dip filaments shouldn't normally light at the same time.

Looking at the H4 bulb plug from the REAR, the LEFT (common) terminal is earth.

British Bikes / Re: 1969 bsa a65
« on: October 03, 2017, 09:35:24 PM »
the drive as far as I can see has not got the 20 to one stamped on it, that the book suggests

2.0:1  (not 20:1).

Where did you look, as the ratio and also the drive gearbox number is normally stamped on the inner ring so you'd have to remove it? 

is there any other way to check?

ACCURATELY count the number of wheel rotations to output (cable drive) rotations. If exactly 1 wheel turn to 2 output then it's 2:1.

However, the speedo ratio also has to match the drive gearbox ratio (and direction of cable rotation).

At the very bottom of the dial, there should be the speedo model number (SSM 5001/05 ?) and either '1600' or '1000' (cable turns per mile)?

A '1000' MPH speedo needs a 1.25:1 (15/12) ratio drive gearbox.
'1600' MPH needs 2:1. 


British Bikes / Re: Service for Triumph T140D
« on: September 16, 2017, 03:54:20 PM »
Yes, rockerbox are still there, I might give them a call.  I guess I could give it a go myself, I have a haynes manual and I have no problem in getting out the spanners for my honda, I suppose I'm just a bit nervous of messing it up.

As it's been standing since being restored then, as Rex said, it shouldn't need much more than an oil change and a new battery.

The Haynes 650/750 unit twin manual doesn't cover the OIF models in any detail, so a good deal of the information and some technical data it contains isn't relevant to the T140D. 

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