Clutch slip?

[surfish95747]

Okay guys, I need to do more riding and diagnosing, but this is what happened a couple weeks ago. I was riding just down a road, 50 or 60 miles per hour for a solid few minutes, then turned onto a side road and as I was accelerating through third gear I think it was at the top of the RPM range about to shift, it sort of lurched and then the RPM revved without power to the wheels (at least that is how I remember it). I immediately let off the gas pulled over, shifted through the gears and then went the last few 100 feet to my destination. I came back out and rode the bike slowly around the parking lot and it didn't feel smooth anymore. It almost felt as though there was gravel in the drivetrain somewhere. I rode it home and parked it as I am currently rebuilding the carbs and re adjusting the valve clearance to .005"-.006" each.

Does this sound like a clutch going out? What signs will I see when I pull the clutch cover off?

Do I just replace friction plates and springs or do I need to do the steel plates too? I'm thinking of just going with EBC plates and springs, any reason not too? Thanks guys!

[shinyribs]

Sounds a little worse than just a slipping clutch. Maybe the fiber material has actually come loose. Definitely open the clutch basket and take a look.

I'm not positive about the dohc bikes, but if they have a primary chain tensioner, it may be that it has failed. Do you hear sounds like a chain jumping teeth/ clicking and popping?

[surfish95747]

Hmm, I didn't hear anything like that. I just recently put new rings on the pistons. I'll pop the cover off the clutch and see if anything looks out of the ordinary. I just replaced the cam chain tensioners with some used but fresher than my old ones. I hope its not the primary chain tensioner. That's going from the transmission to the crankshaft right?

On Thu, Jun 23, 2016 at 4:58 PM, shinyribs [via Honda CB750'S] <[hidden email]> wrote:

Sounds a little worse than just a slipping clutch. Maybe the fiber material has actually come loose. Definitely open the clutch basket and take a look.

I'm not positive about the dohc bikes, but if they have a primary chain tensioner, it may be that it has failed. Do you hear sounds like a chain jumping teeth/ clicking and popping?

A free people ought not only be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government.~George Washington

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[surfish95747]

In the lower case?

On Thu, Jun 23, 2016 at 5:02 PM, Taylor Nelson <[hidden email]> wrote:

Hmm, I didn't hear anything like that. I just recently put new rings on the pistons. I'll pop the cover off the clutch and see if anything looks out of the ordinary. I just replaced the cam chain tensioners with some used but fresher than my old ones. I hope its not the primary chain tensioner. That's going from the transmission to the crankshaft right?

On Thu, Jun 23, 2016 at 4:58 PM, shinyribs [via Honda CB750'S] <[hidden email]> wrote:

Sounds a little worse than just a slipping clutch. Maybe the fiber material has actually come loose. Definitely open the clutch basket and take a look.

I'm not positive about the dohc bikes, but if they have a primary chain tensioner, it may be that it has failed. Do you hear sounds like a chain jumping teeth/ clicking and popping?

A free people ought not only be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government.~George Washington

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[shinyribs]

Correct. On a SOHC bike you can see it by dropping the oil pan. Not sure about the DOHC's. It's just a thought, though. I'd definitely check the clutch first.

[surfish95747]

Yeah I'm not sure either, but don't you think if the primary chain broke, I wouldn't have been able to ride it home. I pulled the cover off the clutch last night, so far nothing out of the ordinary.

[shinyribs]

I agree if the chain broke that you wouldn't be going anywhere. But if the tensioner for the primary chain failed ( IF it has one like a SOHC does) then you would have lots of slack in the primary chain. Allowing it to skip teeth and jump around.

[Re-run]

I'd just get honda plates and barnett springs. You can't go wrong with honda plates. Barnett springs are powerful, so lever pull will be harder. Ebc would be fine for springs too.

[surfish95747]

Where can you find some Honda friction plates? Should I change the Steel plates at the same time or leave them if they are not warped. If the stock springs are within spec, should I just leave them or for sure go with the Barnett springs? Also I've been reading that friction plates that are made from cork material with aluminum particles imbedded tend to flake off and get in the oil nd prematurely wearing out oil pumps etc? I see the Barnett plates are made from Kevlar materiel. Is this better?

On Mon, Jun 27, 2016 at 9:38 AM, Re-run [via Honda CB750'S] <[hidden email]> wrote:

I'd just get honda plates and barnett springs. You can't go wrong with honda plates. Barnett springs are powerful, so lever pull will be harder. Ebc would be fine for springs too.

The ride IS the adventure. The destination is just to get gas!

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[TOOLS1]

I would take the clutch apart and check everything. Then replace the parts that are out of tolerance. Or if you are really worried about it, order a clutch kit from Cycle-X
TOOLS