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Old 09-07-2013, 02:11 AM   #21
BobbyG
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Default Re: Clutch Slip

Thanks Henry - diagram helps a lot - I am going to replace that bolt with a pin this weekend.
I do have a better understanding of how it all goes together now, and on a short ( 5 mile) drive it was not slipping, it does appear that the weight of the clutch pedal was pushing the release bearing inwards to make contact, I was thinking that maybe I was also making it worse possibly by riding the clutch a bit as well - this V8 is in a 28 coupe and there is not a lot of room for my size 13s in there !! - and driving this car is a bit of a new experience for me ( usually laying underneath it with parts spread all around trying to work out what the hell I am doing ) so as a consequence I find myself having a lot to do when driving it. For a start it is a Left Hand Drive Stick but the gears are in the wrong position! and I am in the Uk ( Good fun - but a bit challenging) I am listening out for mechanical noises constantly and to be fair I don't have a lot of success on getting back home under my own steam so far.

I appreciate everyones help as allways - Thankyou Guys.

Bob
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Old 09-07-2013, 07:08 AM   #22
JM 35 Sedan
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Default Re: Clutch Slip

"Left hand drive stick but the gears are in the wrong position"

Bob, that's how we feel driving there.... wrong side of the car, gears in the wrong position and on the wrong side of the road . On several trips to the UK we rented large motorhomes. Now that got really scary on those one lane country roads!
How are the water pumps doing?
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Old 09-07-2013, 09:19 AM   #23
V8COOPMAN
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Default Re: Clutch Slip

Quote:
Originally Posted by Bluebell View Post
Ross, V8 Coopman, Is this directed at me?
I read BobbyG's first post, and the one where he indicated it was fixed. I made the mistake of assuming he had no freeboard left. (the normal fault) I'd missed the 3" travel bit. (I read it all before but not recalled all the detail. Maybe that bolt in the bottom clevis was binding enough, that with the weight of the pedal (and no return spring ) it was enough to let the clutch slip?
I don't know, but something has changed. I was just trying to give BobbyG some understanding of how it worked.
BTW BobbyG, that shouldn't be a bolt in that clevis. It should have a clevis pin.
Bluebell...NOT directed toward you in any fashion. You obviously have a good grip on the physics of how a mechanical clutch and it's attendant operating linkages are designed to work. I'm only TRYING to imply that IF the pedal is 3" from the toeboard, and that ALL the linkages are still in place, that the clutch is already in a state of diminishing clamping force. I've lost more than one pressure plate in the past 45+ years, and more than one of those happened without prior warning, as I've (maybe mistakenly) ASSUMED that this one has. One big indicator is that all of a sudden, it'll slip in high gear, and the pedal "free play" has SUDDENLY become excessive (3" in this case). DD
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Old 09-07-2013, 09:49 AM   #24
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Default Re: Clutch Slip

V8Coopman, fair enough. My experience is general rather than flathead v8 specific. I'm here to learn, to help, and to have the odd laugh. Thanks for the comment in the other thread. Cheers.
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Old 09-07-2013, 10:03 AM   #25
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Default Re: Clutch Slip

I also do not understand how the free play adjustment has any effect on the amount of clutch engagement, but I am open to learning something new. The clevis rod, I thought, was adjusted to set the clutch pedal level with the brake pedal. As the clutch disc wears, you take up the additional travel with the threaded rod. I can see how if adjusted too short, it would not permit complete disengagement when depressed, resulting in gear grinding when shifting. But when the clutch release lever is in its rear most position, the clutch disc/pp should be fully clamped, unless they are completely worn or have picked up some fluid.
Am I seeing this wrong?
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Old 09-07-2013, 12:51 PM   #26
Terry,OH
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Default Re: Clutch Slip

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I did not see your brake pedal return spring either. Take the photo below with a grain of salt, it is not mine. This is clutch pedal return. Clutch spring is 78-7523 is 2.81" OAL, Brake is 78-2456
Attached Images
File Type: jpg Spring 37-38 78-7523 clutch pedal 2.81 inch.jpg (9.1 KB, 6 views)

Last edited by Terry,OH; 09-07-2013 at 03:23 PM.
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Old 09-07-2013, 01:42 PM   #27
BobbyG
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Default Re: Clutch Slip

Quote:
Originally Posted by JM 35 Sedan View Post
"Left hand drive stick but the gears are in the wrong position"

Bob, that's how we feel driving there.... wrong side of the car, gears in the wrong position and on the wrong side of the road . On several trips to the UK we rented large motorhomes. Now that got really scary on those one lane country roads!
How are the water pumps doing?
Water pumps are spot on John - good as gold - I put the 4lb valve on the overflow as well and not lost a drop - Skip Haney pumps are the business.



Sitting on the left is not too bad for me I have had a lot of 'left hookers' but most have been auto trans as is my 55 Chevy - so it is the gear changing using my right hand that is a bit odd to me ---- getting used to it now and I have stopped trying to pull away forwards by selecting reverse !!

Bob
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