>mead tomkinson

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Re: >mead tomkinson

Post by beesa71 » Sun Apr 15, 2018 10:18 am

Francois,

See my 'pm' to you.

You obviously know more about the 2 off 1972 bikes than I do, be interesting to add to my information.

Regards to all.

Paul.

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Re: >mead tomkinsos

Post by BasilF » Fri Jun 15, 2018 5:57 pm

beesa71 wrote:No Gerry, just 2LS.

Each cylinder has two fixings. Each shoe then, at about mid-point, has an 'anti-knock back' arrangement with a nut on the outside of the brake plate and that might be giving the impression of more pivot points etc.

I've removed the pictures I took of the inside of a M&T converted brake plate assembly from my iPad but will try and add images to this thread when I get home later in the week.

Paul.
It looks like 2 trailing shoes! No it doesn't. Snail cams are at the moving end of the cylinders.

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Re: >mead tomkinson

Post by jim-nz » Tue Aug 14, 2018 10:35 am

The article states that the bike is lowered 2.5 cm. Would anyone here know if that is at the front and rear or just the front?

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Re: >mead tomkinson

Post by minetymenace » Tue Aug 14, 2018 10:41 am

I guess, and it is only a guess that it would be both, otherwise the handling would be upset....shorter shocks on the rear (you don't need the travel on a circuit) and stanchions one inch above the yokes (as in the photo). Having said it is both front and rear, just doing the front would make it turn in quicker, hard to judge the angle of the swing arm to tell if the rear is lowered too.
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Re: >mead tomkinson

Post by beesa71 » Tue Aug 14, 2018 12:34 pm

The stanchions and sprongs were shortened (I have evidence) and the rear shock absorbers were, as you suggest Gerry, 1" shorter units.

Paul.

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Re: >mead tomkinson

Post by jim-nz » Mon Aug 27, 2018 9:19 pm

Also on the subject of the Y*maha rear wheel. from looking at the pictures i decided it is a DS3-DS6 wheel so i recently obtained a good DS5 wheel. One of the things people say about B50's is that the rear wheel is too heavy so i was surprised to see how much heavier the DS5 wheel is. Rough measurements give the B50 wheel at around 7 kg and the DS5 wheel at around 9-10 kg. these measurements were done on bathroom scales so not necessarily accurate. Taken with no tyre and stock steel rims on both. i was thinking of using the wheel in my race bike but i am unsure now. Is there any knowledge about on any lightening M&T might have done to the Y*maha wheel?

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Re: >mead tomkinson

Post by beesa71 » Tue Aug 28, 2018 9:51 am

Jim,

In answer to your last question; no they didn't although I have one that was fitted with a Nylon sprocket. An alloy rim, as they used of course, helped a little.

I will try and post pics of an installed wheel (if nobody beats me to it) after the forthcoming B50 meeting in France.

Regards to all.

Paul.

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Re: >mead tomkinson

Post by jim-nz » Tue Nov 13, 2018 8:36 am

As a matter of interest today I saw some pictures of the M&T bike that ended up in Australia. They were on Facebook in a group called just beezas. The pictures were taken at the recent international BSA rally.
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Re: >mead tomkinson

Post by b50root » Tue Nov 13, 2018 9:38 am

Here are the pic from Facebook.
m&t Autralia.JPG
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Re: >mead tomkinson

Post by beat » Tue Nov 13, 2018 9:13 pm

:?: :?:
was it transporting roos on top of the tank :?: :?:

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Re: >mead tomkinson

Post by skippy » Tue Nov 13, 2018 10:32 pm

Seen at the international rally owner Doug Fraser
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Re: >mead tomkinson

Post by minetymenace » Wed Nov 14, 2018 12:31 am

Should have been in France the other month.....missed something very special then.
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Re: >mead tomkinson

Post by Ady00 » Wed Jun 24, 2020 10:53 am

Hello
Just recently joined B50.org, I have a T25 that I’m completing after doing the engine on my T140. I love reading about Mead and Tomkinson and what they did, I read an article in a ‘70’s issue of Motorcycle Sport about Nessie , very interesting, I’ve only had a brief look at this site but I’ve a feeling I’m going to enjoy being on here.

All the best..... Ady

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Re: >mead tomkinson

Post by minetymenace » Wed Jun 24, 2020 11:04 am

<135 to the forum Ady00!

Would you update your profile and let everyone know roughly where you are please? (Location)

Good luck with your T25, I full understand the reasons for rebuilding the T140, the Meriden boys were rejects from Armory road!
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Re: >mead tomkinson

Post by crankbuster » Wed Jun 24, 2020 11:42 am

:laugh I think most of them rejects could spell it though Minety! :grin:

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Re: >mead tomkinson

Post by beesa71 » Wed Jun 24, 2020 11:52 am

Ady,

You are more than welcome to join the unofficial M&T Enthusiasts Group. A small but dedicated group, worldwide membership, true keepers of the faith (as described by ‘outsiders’ - themselves most welcome too).

Plenty is known about Mike Tomkinson and his incredible team but we are always keen to know and see more.

Armoury Road (hopefully correct CB) did, it seems, offer some help to M&T but nothing positive ie evidence, fully supports that theory. For instance, the 1971 bikes (two off, one blue and one red) went to M&T as B25’s, they appeared at the first meeting of the year held run at Thruxton as 500’s but still with Gold Star 250 decals on the side panels - it is said to have confused other competitors with the speed of beesa 250’s!

Regards to all OIF’ers.

Paul.
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Re: >mead tomkinson

Post by minetymenace » Wed Jun 24, 2020 12:41 pm

Fat fingers, old age, sneaking a reply when I should be working....take your pick...I promise to try harder next time :oops:
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Re: >mead tomkinson

Post by Ady00 » Wed Jun 24, 2020 1:37 pm

Many thanks for your welcomes and couldn’t put it better myself Minety 😁👍

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