EBC clutch Failure

[Cone]

I fitted a heavy duty ebc clutch on the 20th September since then I have maybe 2 tanks of fuel under its belt

This weekend it failed catastrophically on a hill climb

The springs shrunk and plates shredded in the engine

Hopefully I’ll get a good response from ebc but I wait to hear

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[Asgard]

Weird, I've fitted a few EBC replacements over the years and never seen that before, I wonder if the springs had somehow missed going through a stage in production (don't know if they are heat treated/annealed after forming )

Clearly something went wrong, but I think a bit harsh to say avoid EBC when they have so many units in use with no probs, your just unlucky mate

[Cone]

Weird, I've fitted a few EBC replacements over the years and never seen that before, I wonder if the springs had somehow missed going through a stage in production (don't know if they are heat treated/annealed after forming )

Clearly something went wrong, but I think a bit harsh to say avoid EBC when they have so many units in use with no probs, your just unlucky mate

Well im hearing EBC know they have a problem with their clutches in the 701 but continue to sell them

No I don’t think it’s too harsh as this was very new and you would not expect this of even the OEM unit.

[dave h]

Weird, I've fitted a few EBC replacements over the years and never seen that before, I wonder if the springs had somehow missed going through a stage in production (don't know if they are heat treated/annealed after forming )

Clearly something went wrong, but I think a bit harsh to say avoid EBC when they have so many units in use with no probs, your just unlucky mate

Well im hearing EBC know they have a problem with their clutches in the 701 but continue to sell them

No I don’t think it’s too harsh as this was very new and you would not expect this of even the OEM unit.

hey paul i feel your pain,
well i did yesterday on that trail i was pushing lol,
hope you get a good outcome from the supplier,

dave.

[PDiddy]

I use EBC in my 690, not sure if there's any difference in the clutch and i've not had any issues in over 4K miles.

[Cone]

Weird, I've fitted a few EBC replacements over the years and never seen that before, I wonder if the springs had somehow missed going through a stage in production (don't know if they are heat treated/annealed after forming )

Clearly something went wrong, but I think a bit harsh to say avoid EBC when they have so many units in use with no probs, your just unlucky mate

So I agree and have changed the header as ive slowly calmed down and have to say the customer service from EBC has been exceptional, but not from the supplier who i purchased the clutch from....

So EBC have admitted that their old clutches had an issue with the compound reacting strangely with 10w50 and i may have had an old unit. They are sending me out a new one.

But I ride solo off road alot because i have no friends. Ive had so many issues with the clutch on this bike i have no faith in it, if i wasnt with 4-5 others i would have been completely stuck.

[Richard Simpson Mark II]

Interesting...The clutch on my Gas Gas Pampera was virtually impossible to set up.

I found a youtube channel run by the former service manager for GasGas USA, and he said that synthetic gear oil would make the friction material swell to the point where the clutch wouldn't work.

He suggested 5W-30 mineral car engine oil...difficult but not impossible to find in the UK. So that's what's in there now (together with new clutch pack that was the best part of £100, including springs) and so far it seems OK.

[Pint Master]

The KTM/Husky 690 does seem to go through clutchs when ridden off road mine lasted less than 4,000 miles from new and its second owner also had to replace the replacement clutch at low mileage.

[Asgard]

I'm curious now, the friction plates in your photo do look to have suffered some sort of reaction, but your original analysis was that the springs have taken a set (they do look a lot shorter than the one you show alongside for comparison.)

Was this a red herring and are the springs actually shorter on purpose because the clutch pack has extra and or thicker plates?

[Cone]

I'm curious now, the friction plates in your photo do look to have suffered some sort of reaction, but your original analysis was that the springs have taken a set (they do look a lot shorter than the one you show alongside for comparison.)

Was this a red herring and are the springs actually shorter on purpose because the clutch pack has extra and or thicker plates?

No that spring came from the same pack. They send them in a pack of 6 so it was an used ebc one