Author Topic: cam followers  (Read 1246 times)

Offline coater87

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cam followers
« on: 12.08. 2009 19:10 »
 Hello,

 Does anyone know the exact radius that the cam followers are ground too? Mine show some wear, too much really, and need to be re-ground.

 Thank you,
Lee
Central Wisconsin in the U.S.

Offline snowbeard

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Re: cam followers
« Reply #1 on: 13.08. 2009 05:38 »
for someone initially reluctant to rebuild the old gal, you are doin' it up right!!  glad to see it, man, bikes this old deserve to live! *clap*
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Offline dpaddock

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Re: cam followers
« Reply #2 on: 13.08. 2009 14:27 »
I believe the radius is 1.25 inches (I measured new ones with an optical comparator several years ago), but I'm away from my shop notes right now. I'll be back tomorrow and post the value for you.

David
David
'57 Spitfire


Offline Goldy

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Re: cam followers
« Reply #3 on: 13.08. 2009 17:05 »
I think you will find that they are case hardened, and so you will have to build them up with stellite or re harden them.
56 A10 Golden Flash - Restore, ride, relive.                                          
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Offline coater87

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Re: cam followers
« Reply #4 on: 14.08. 2009 01:35 »
Thank you guys,

 Snow, I am finding this to be much more fun then any old V-8. Its still a little daunting because I am never too positive! *smile*

 David, I look forward to what your notes say- and thank you for the help. If I am going to try and set this up, I want to make sure I get it right the first time. I am thinking slow speed grind, just plain water as coolant. I will catch the radius using the rotary table. I still have to come up with a jig that will hold it all after its clocked in.

 Hi Goldy, yes I will have to re-harden them. For this I need to know about what they were sent from the factory at. I am pretty sure I can get close by heating them too color, then a quick dip in oil followed by a polish. Then I will have to wait until the wife is gone, they will go right into the kitchen oven for probably 2 hours to relieve the stress. Does anyone see any pitfalls to what I plan to do here?

 Thanks,
Lee
Central Wisconsin in the U.S.

Offline dpaddock

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Re: cam followers
« Reply #5 on: 15.08. 2009 07:59 »
The foot radius is 1.250 inches and the hardness is 62 Rc.
About .010 inch can be ground away safely.
Use assembly lube at the cam/follower contact face, and change oil and filter often.
Good luck, Lee.

David
David
'57 Spitfire


Offline rocket man

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Re: cam followers
« Reply #6 on: 15.08. 2009 23:16 »
yes dont let the wife catch you *smile*