Triumphrat

burgessa23

when slowing to a stop or inching forward soon after stopping there is a pulling feeling and a clunking sound coming from the front sprocket area of the engine on my s4

it's only got 110 miles on it, is it just from the mineral oil for the first 500 miles or could it be more serious or is the clutch out of adjustment?

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thanks,
-Andrew

take it back to the dealer have them check front sprocket ,d chain tension & cluth cable adjustment. that is definitely not normal.

Will

That sounds a bit different from the "normal" clutch clank that some bikes have. If it only comes when you are inching forward from a stop, then it is a quirk that you don't have to worry about if it doesn't bother you. If it is happening when you are slowing down, then that is something else. My guess is that your clutch cable is adjusted too tight and is making the clutch drag a little. I would also guess that it clanks when you let the clutch lever out just a little. Try putting a little slack into the clutch cable. If the clutch clanks sometimes when you gently move forward in first gear, usually when the engine is hot, then it is nothing to worry about. Otherwise, there is something in there that needs more diagnosis.

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Will
It's a squid thing. You wouldn't understand.
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Go soothingly on the grease mud, as there lurks the skid demon.

It is none of those things. You need the same same service mine needs. The Triumph mechanic at my shop found out from the factory mechanics (at the Rocket 3 service convention) that there are 2 common problems that exhibit your exact symtoms ( like mine). One, there may be a burr on the clutch basket that needs dressing and two; there is an updated clutch part that my mechanic calls a "bullet", that is on the end of the clutch pushrod. This ensures even clutch dis-engagment.I am waiting for the parts to arrive to get it fixed under warranty.

burgessa23

it only happens when the engine is hot > 200 degrees, is this the clutch cable issue that lcjohnny fixed by getting a clutch cable custom made?

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thanks,
-Andrew

sangsters

I had the same problem, and the fix was as Trispeed described.

A longish service (I have no car so had to wait for the bike after riding it to my dealer) since the bike needs to cool off enough for the guys to work.

Get it done, you'll be thrilled.

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Sometimes being an adult means recognizing what it is you want... and running like hell in the opposite direction.

all these guys chasing after an 'alleged' clutch cable weakness are steering you in the wrong direction. There's nothing wrong with the cable, though the routing can lead to wear on the sleeve. There is no mysterious cable stretch! The clutch pull is so light, there is very little stress on the cable; you would have to be pulling against a fixed point and have some ridiculous forearm strength to stretch that cable in the least.

Not sure I'd agree that there's no stretch. Something was amiss the other day.

I put the factory cable back on for my 500 mi service - didn't want to get any hassle.

I've been driving with it for the few days since the service and one of these days, around 90 deg f ... engine gets up to 106c at every stop light, fan going, you know - usual day on the speed four. But this was an hour straight. At the end of this ride, the clutch disengaged almost by the handgrip - where it usually does so farther out. So there is very likely something to the stretch theory. I've never felt that feeling with the aftermarket cable - which is going back on tomorrow.

Peet

What do you think is causing stretching in the cable? it doesn't get hot; it doesn't have much strain on it; what else is there? The clutch gets hot and cranky, sure; that doesn't have anything to do with the cable, however. Simple physics, really. If the cable were stretching, how would it return to it's original length? A clutch cable doesn't have memory; once stretched, always stretched. You would quickly run out of available adjustment.....The Speed4 clutch has troubles, the cable doesn't.

Now with this issue I don't go along the cable stretch route!! I agree with Trispeed that clutch lift on the S4 is marginal.

But I think the clattering banging problem ( I also) get when slowing to stop or inching forward at low speed, especially on the overrun - is down to the shock absorber in the clutch.

I haven;'t got the manual but (in order to start a nice argumentative thread!) I will lay money there is a standard ujm 6 spring engine-shock-absorber built into the clutch drum like there was on the 885 triples.

I think the spring rate is too low so if you get caught in a high gear at low speed the shock absorber clatters back and forth against the end stops.

Now I admit that this is all just guesswork!?!

Does anyone out there know?


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