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Cam Follower Regrind Radius?
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Topic: Cam Follower Regrind Radius? (Read 645 times)
Peter Gee
Valued Contributor
Join Date: Apr 2015
Posts: 268
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Cam Follower Regrind Radius?
«
on:
18.12. 2016 10:31 »
I have some original cam followers that will take a re-facing, there is plenty of meat left. What is the radius? I hear it's very large, almost flat? Need to inform my grinder.
Many Thanks
Peter
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Kenya
muskrat
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Join Date: Jul 2009
Posts: 10780
Karma: 130
Lithgow NSW Oz
Re: Cam Follower Regrind Radius?
«
Reply #1 on:
18.12. 2016 19:06 »
G'day Peter.
1.25" radius matches my measurement as well.
http://www.a7a10.net/forum/index.php?topic=1484.msg10184#msg10184
Cheers
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'51 A7 plunger, '57 A7SS racer now a A10CR, '78 XT500, '83 CB1100F, 88 HD FXST, 2000 CBR929RR ex Honda Australia Superbike .
Australia
Muskys Plunger A7
trevinoz
Newcastle, N.S.W. Australia.
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Join Date: Jul 2006
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Re: Cam Follower Regrind Radius?
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Reply #2 on:
18.12. 2016 20:53 »
After you have them ground you will need to get them hardened.
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muskrat
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Lithgow NSW Oz
Re: Cam Follower Regrind Radius?
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Reply #3 on:
19.12. 2016 18:53 »
As a side note. The greater the radius (flatter) the more volume can be crammed into the cylinder. The opening and closing times remain the same.
If too much (2mm) is ground off the followers they won't drop enough to reach the cam base circle and ride on the retainers.
Cheers
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'51 A7 plunger, '57 A7SS racer now a A10CR, '78 XT500, '83 CB1100F, 88 HD FXST, 2000 CBR929RR ex Honda Australia Superbike .
Australia
Muskys Plunger A7
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The BSA A7-A10 Forum
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Technical (Descriptive Topic Titles - Stay on Topic)
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A7 & A10 Engine
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Cam Follower Regrind Radius?