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Messages - L.A.B.

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British Bikes / Re: T 100 490cc 1968
« on: May 18, 2018, 05:29:29 PM »
well, I was there, I know what I did, you were not and don't know.
so lets leave it at that?

I don't doubt you were there. As for the rest of it, yes I think we should leave it at that.

British Bikes / Re: T 100 490cc 1968
« on: May 18, 2018, 01:57:36 PM »
Be that as it may, I had to change damn near every Met Police Saint gearbox to needle rollers either 68 or 69.

I don't know what you could have changed as Unit 650s had layshaft needle rollers from 1963 and the other gearbox bushes would have been almost impossible to change to needle rollers (without machining out gears etc.) and bronze bushes continued to be used right to the end of T140 production. Triumph's recommended gearbox oil remained as EP90.

As I recall, thrust washers only used with needle rollers, bushes had that flange incorporated in the bush.

Yes, so replaced bronze bushes with needle rollers and bronze thrust washers!

British Bikes / Re: T 100 490cc 1968
« on: May 18, 2018, 11:02:26 AM »
Around 1968/9 Triumph changed all the bushes in their gearboxes from bronze to needle roller bearings because they were having problems with EP oil corrosion.

Its alleged that EP oils have now got over the corrosion problem.

Triumph certainly didn't stop using bronze bushes in their gearboxes!

Bronze bushes and thrust washers continued to be used in Triumph (T120, T140 etc.) gearboxes. I've never had a problem with any GL4 EP oil and just used whatever brand of EP90 Halfords had on the shelf so they seem to be sulphur stabilised whether it says so or not, but anyone concerned about 'yellow metal' (bronze) damage can buy 'yellow metal safe' EP oil if they wish.

Edit: The layshaft bearings were changed to needle rollers, however, this occurred some years before EP oil was specified and not as late as '68/'69 ('63 for T120 etc.). 

British Bikes / Re: T 100 490cc 1968
« on: May 18, 2018, 09:48:46 AM »
In the many years I've used EP oil I've never known it to become "actively corrosive". As with any oil if changed at the normal service interval there shouldn't be a problem [Edit] but use GL4, not GL5. 

British Bikes / Re: T 100 490cc 1968 tax MOT ?
« on: May 18, 2018, 09:41:06 AM »
I hope a member can advise me I have a T 100 first registered 21-5-1969 frame No. H65380  engine No.H39492
 am I correct in thinking that after 20-5-2018 I no longer need to tax or MOT my bike ? I have just received a letter from DVLA to say my bike must be taxed and MOTd ? or placed on SORN.

Is it insured? If not, then it must be SORNed.

You need to either tax or SORN it unless the taxation class has been changed to 'Historic'.
Even if Historic, you still have to 'tax' it, however, Historic tax is free.

You are correct about the change in MoT rules from the 20th of this month.

British Bikes / Re: 1970 RE Interceptor 750
« on: May 08, 2018, 02:05:52 PM »
You may be better off buying from Hitchcocks in the UK.

Or Burton 

British Bikes / Re: Loctite 5990
« on: May 04, 2018, 09:22:01 AM »
I use ordinary clear silicone sealant.
Not even the high-temperature silicone.

British Bikes / Re: Cush drive , necessary or not
« on: May 02, 2018, 11:24:04 PM »

I understand that on the later B31 when an alternator was fitted , the cush drive was dispensed with!
Can this be done generally.  Would it be a problem if there was no cush drive??

As I understand it, it was the crankshaft-mounted ramp-cam shock absorber that was dispensed with in order to fit the alternator and a cush-drive clutch assembly was then used.

"'4 Spring Triumph' type with cush drive - used on alternator equipped 'B' and 'M' models from 1959."

British Bikes / Re: T 100 490cc 1968
« on: May 02, 2018, 02:17:13 PM »
I am clear about the engine oil but how do I change the gearbox oil ?
there is a nut underneath the motor which \I think is also a gauze filter does this drain the g/box then is there a level outlet for the G/box ?

You can't be "clear about the engine oil" if you think the sump plug could be for draining the gearbox oil, so I suggest you read the manual (link, below) first before you do anything as that will tell you almost everything you need to know plus a few things that you probably don't even know you need to know.

Then if there's something you don't understand most here will be glad to help, but try to do your own research first. 

British Bikes / Re: rear chain
« on: February 27, 2018, 04:23:35 PM »
hello I need a new chain for my 72 t120, having spent hours and money I don't want oil off the chain all over my new alloy rims been told an O ring chain is the one to go for, what do you think

Depends what you normally use for chain lubricant?

O-ring chain is often wider than standard chain.

O-ring chain still needs lubricating.
Q: If an O-ring chain lube doesn't need to get lubricant past the O-rings and inside the chain, what does it do for the chain then?

A: It keeps the chain from rusting, it lubricates the O-ring itself and it does provide some cushion effect between the chain roller and the sprocket, which reduces wear on the sprockets and increases the chain's life.


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 »

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