P11 Speedo & Tach

elefantrider · Aug 9, 2015

How to tell the difference between an P11 speedo and tach and others (atlas)?
I am looking for a halfway decent original P11 Tach to replace a broke one.

BillT · Aug 9, 2015

The original P11 tach should be an 8000 RPM grey face, with the model designation RSM3003/00, RSM3003/00A, or RSM3003/00B depending on when the bike was made

Should be the same as Atlas. My G15CS - July, 1967 build - has an RSM3003/00A, and my Ranger, October 1968 build, has a 3003/00B

p400 · Aug 28, 2015

My daily ride today I lost the rev counter.
Rev counter started making a lot of noise and vibrating, needle fell off.
I thought it was the drive cable that was at fault, so I have a new cable.
But it seems that internally some bearing or lubrication has failed.

p400 · Aug 28, 2015

here is the parts book listing 66-67-68 for 650ss, Atlas, N15CS, P11, P11A, G15CS, G15CSR, G15 Mark II
I am not sure this is useful , but I am posting for my benefit.

p400 · Aug 28, 2015

Here is the Smiths 1966 catalog listing -
So this P11 unit is indeed and the list confirms the rev counter RSM.3003/00A

p400 · Aug 30, 2015

A Useful list posted at vintage British cables -
I underlined the P11 listed units, as this is what I am dealing with for repairs

P11 Speedo & Tach

elefantrider

BillT

p400

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p400

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p400

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p400

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