Author Topic: A7/A10 Camfollowers. Radiused or Flat?  (Read 453 times)

Offline Peter Gee

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A7/A10 Camfollowers. Radiused or Flat?
« on: 26.11. 2015 14:12 »
Hi Folks,

I need to know, (1856 A&SS) as my cam followers need regrind, if this is a flat grind or a radius and if a radius, what radius? I susect they are flat when knew but they are sure radiused now on the second hand pair I bought!

Secondly, BSA gives two different part numbers but the followers seem identical..any way to tell em apart?

Cheers

Peter in Kenya

Offline Greybeard

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Re: A7/A10 Camfollowers. Radiused or Flat?
« Reply #1 on: 26.11. 2015 16:21 »
Peter, (in Kenya)

Initial disclaimer: This is from memory.

The cam followers, (sometimes called tappets  ;)) have a shallow radius. I'd guess it's something like a 6" radius.

Cam followers are pairs; they have a flat side that sits against their mate; hence different part numbers.

Online beezermacc

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Re: A7/A10 Camfollowers. Radiused or Flat?
« Reply #2 on: 26.11. 2015 17:14 »
Cam followers are available new.
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Offline Greybeard

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Re: A7/A10 Camfollowers. Radiused or Flat?
« Reply #3 on: 26.11. 2015 19:52 »
Cam followers are available new.

Hmm, if only we knew someone on this forum that could get cam followers to Peter in Kenya!!  ;)

Online muskrat

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Re: A7/A10 Camfollowers. Radiused or Flat?
« Reply #4 on: 26.11. 2015 19:58 »
G'day Peter. New would be my choice and probably cost effective compared to stellite weld & regrind.
Greybeard, 1.25" radius.
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Offline Rocket Racer

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Re: A7/A10 Camfollowers. Radiused or Flat?
« Reply #5 on: 27.11. 2015 08:20 »
If the four cam followers are identical then you have a mismatched set. The centre pair have a decent slot in them as they are retained by a large pin, while the outer pair don't have that slot machined in them.
A good rider periodically checks all nuts and bolts with a spanner to see that they are tight - Instruction Manual for BSA B series, p46, para 2.
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