Author Topic: Clutch operating camshaft thingy - worn or normal?  (Read 900 times)

Offline McCabe-Thiele (Ted)

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Clutch operating camshaft thingy - worn or normal?
« on: October 10, 2020, 03:14:22 AM »
At first glance I thought this was badly worn but looking at the part picture on DS it looks like its how they are designed!
When I reassemble it is there any point in packing it with grease or will the oil in the clutch somehow provide lubrication?




Clutch casing mechanism by Macabe Thiele, on Flickr
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Offline Trigger

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Re: Clutch operating camshaft thingy - worn or normal?
« Reply #1 on: October 10, 2020, 07:53:44 AM »
This is normal. As long as the balls in the cage are perfectly round, no rust or flat spots just a smear of grease on the balls is needed. Also remember to change the o'ring  ;)

Offline McCabe-Thiele (Ted)

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Re: Clutch operating camshaft thingy - worn or normal?
« Reply #2 on: October 10, 2020, 10:09:45 AM »
The balls are in pretty poor condition not sure what size they are perhaps DS sells them.
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Offline Trigger

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Re: Clutch operating camshaft thingy - worn or normal?
« Reply #3 on: October 10, 2020, 11:38:02 AM »
They have not been available for years. PM Julie as i will have some somewhere. 

Offline McCabe-Thiele (Ted)

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Re: Clutch operating camshaft thingy - worn or normal?
« Reply #4 on: October 10, 2020, 01:47:24 PM »
They have not been available for years. PM Julie as i will have some somewhere.

I've measured them up they are 10 mm bearings - my brother should have some that size - if not I will contact NJ. Thanks

Not sure about the O ring its a small critter do you know the size by any chance?
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Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline Nurse Julie

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Re: Clutch operating camshaft thingy - worn or normal?
« Reply #5 on: October 10, 2020, 02:01:09 PM »
They have not been available for years. PM Julie as i will have some somewhere.

I've measured them up they are 10 mm bearings - my brother should have some that size - if not I will contact NJ. Thanks

Not sure about the O ring its a small critter do you know the size by any chance?
The ball bearings are 10.25mm, so 10mm ones will fall out of the little baskets. I think the 10.25 size is specifically licenced to Honda, as I have searched worldwide for replacements and can't find any. Even in imperial, there is no exact equivalent.
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Offline McCabe-Thiele (Ted)

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Re: Clutch operating camshaft thingy - worn or normal?
« Reply #6 on: October 10, 2020, 03:39:00 PM »
They have not been available for years. PM Julie as i will have some somewhere.

I've measured them up they are 10 mm bearings - my brother should have some that size - if not I will contact NJ. Thanks

Not sure about the O ring its a small critter do you know the size by any chance?
The ball bearings are 10.25mm, so 10mm ones will fall out of the little baskets. I think the 10.25 size is specifically licenced to Honda, as I have searched worldwide for replacements and can't find any. Even in imperial, there is no exact equivalent.

When I measured mine they were 10.12 mm and are more like a golf ball texture. I need 3 that are much better not sure what to do.
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Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline Deano400

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Re: Clutch operating camshaft thingy - worn or normal?
« Reply #7 on: October 10, 2020, 03:46:35 PM »

Offline cliff7

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Re: Clutch operating camshaft thingy - worn or normal?
« Reply #8 on: October 10, 2020, 07:04:20 PM »
13/32" balls are available (0.07mm too big). Does anybody know if these would do. https://simplybearings.co.uk/shop/product_info.php?products_id=38926&vat_inc=true

Offline McCabe-Thiele (Ted)

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Re: Clutch operating camshaft thingy - worn or normal?
« Reply #9 on: October 11, 2020, 11:20:22 AM »
I've sourced one from NJ thanks guys. I think 13/32 is too big for the cage and the bit they sit in. The size is closest to 0.4 inch.
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Offline SeanFD

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Re: Clutch operating camshaft thingy - worn or normal?
« Reply #10 on: October 13, 2020, 05:23:09 PM »
10.25mm = 0.40354”

13/32” = 0.40625”

Would a difference of 0.00271” make such a difference?

If they measure 10.12, that’s 0.39842” so a difference of 0.00783; still not big, but too big?

I’m interested to hear wha they thoughts are, because I’d be tempted to say, “close enough”, certainly in the first case.
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Offline McCabe-Thiele (Ted)

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Re: Clutch operating camshaft thingy - worn or normal?
« Reply #11 on: October 13, 2020, 07:48:11 PM »
I suspect that 0.00271" would stop the balls moving within the cage - or at the very least bind. I'm happy to fit the ones from NJ they will be good for many years.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline Trigger

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Re: Clutch operating camshaft thingy - worn or normal?
« Reply #12 on: October 13, 2020, 07:52:06 PM »
10.25mm = 0.40354”

13/32” = 0.40625”

Would a difference of 0.00271” make such a difference?

If they measure 10.12, that’s 0.39842” so a difference of 0.00783; still not big, but too big?

I’m interested to hear wha they thoughts are, because I’d be tempted to say, “close enough”, certainly in the first case.

It doesn't work as i have tried it many years ago  ;)

 

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