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Discussion Starter · #1 ·
i didn't believe my eyes :shocked: WTF is this sticking out bended?
after my ride today i cleaned the scalpel and did some maintenance on my lefty,
cleaned filter and wanted to clean te bearing races and regrease them.
when i took the boot off i saw this . did not notice anything and all working fine( lock-out, rebound, blow-off)
i read today the post from "jon.moab " about Broken Lefty Bearing Retainer and i think
this is what's my problem!

i like to ride with the lock-out on and soft blow-off valve, maybe that is the cause ?



 

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Hybrid Leftys aren't real
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Looks like the circlip that holds it all together, popped off. This usually happens if folks do a bit too vigorous a job while resetting the bearings.

What you're seeing that's bent is the outer race retainer clip. Unless you plan on DIYing it, that thing needs professional help. DO NOT RIDE IT TILL YOU DO!!!:eekster: :nono:

It's in a great position to be just fine, one clip at a few dollars, and a rebuild, and you're in like Flynn.

The riding settings you prefer, have nothing to do with this issue.
 

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I agree fully with Mendon, don't ride it get it fixed by someone that knows how to properly repair the carbon fork.

What I do not agree with is that I have seen and repaired this failure on forks that had never seen a bearing reset.

I have worked on Headshoks and Leftys going back to the mid 90's. These types of no good reason failures had me take the position of not fixing the carbon forks. When asked I tell the owner send it to Cannondale or Mendon. When the owners ask why, I politely explain that my thoughts are that carbon design is not real good.

Hopefully the groove in the carbon tube is intact and can retain the bearings. There is a lot in the lines of dependability by having that big nut retain all the guts on an aluminum tube Lefty.

BTW, that lower tube race is pretty well hammered.
PK
 

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Discussion Starter · #4 ·
MendonCycleSmith said:
Looks like the circlip that holds it all together, popped off. This usually happens if folks do a bit too vigorous a job while resetting the bearings.

What you're seeing that's bent is the outer race retainer clip. Unless you plan on DIYing it, that thing needs professional help. DO NOT RIDE IT TILL YOU DO!!!:eekster: :nono:

It's in a great position to be just fine, one clip at a few dollars, and a rebuild, and you're in like Flynn.

The riding settings you prefer, have nothing to do with this issue.
i don't know the history but i did not perform a reset on this fork yet!
do you know or can you tell what caused this? i will for sure not ride till its fixed.
 

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Discussion Starter · #5 ·
PMK said:
I agree fully with Mendon, don't ride it get it fixed by someone that knows how to properly repair the carbon fork.

What I do not agree with is that I have seen and repaired this failure on forks that had never seen a bearing reset.

I have worked on Headshoks and Leftys going back to the mid 90's. These types of no good reason failures had me take the position of not fixing the carbon forks. When asked I tell the owner send it to Cannondale or Mendon. When the owners ask why, I politely explain that my thoughts are that carbon design is not real good.

Hopefully the groove in the carbon tube is intact and can retain the bearings. There is a lot in the lines of dependability by having that big nut retain all the guts on an aluminum tube Lefty.

BTW, that lower tube race is pretty well hammered.
PK
i have a lefty MAX carbon SPV for more than 2 years and never had eny issue!
so there is a groove in the outer tube inside where the clip gets? i hope there is no other damage .
what do you mean by lower tube race?
what is your opinion on the cause of this?

thanks for your answers
 

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My bad on saying inner race, the photo being kinda way beyond oversize had me thinking I was looking at the bearing. Again my bad, that damage is to the forks lower tube / leg assembly.

Before I would even consider rebuilding it, I would accurately measure the depth of the damage caused by the clip and race holder.

Based on the photos alone, I wouldn't even have you bother sending it for repairs, I'd say start looking for a fork. The inner leg is damaged, possibly the carbon leg is damaged where this may happen again, small spares are needed like races and clips, plus possibly rollers and a few other incidentals. Plus the labor.

Not sure where you live but maybe Mendon has some serviceable stuff to get it fixed up. See if he will quote the job.

BTW, that one gouge looks pretty deep, probably not much material left if it were blended out. Could be a fairly significant loss of structural integrity. Again get it measured. And through this, just consider, a fork is cheap considering any negative consequences.

As for cause, you rode the bike...seriously I do not know what exactly lets go from what stress. I have seen it before though.

PK
 

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Yep, I've seen it happen without any resets as well.


I also agree on the clip design, it sketches me out. They seem to hold up for the majority, so, I dunno.....


I do like the old nut style, wish they'd return to it.


Not too sure on the damage though (to the inner leg) Looks a lot like grease lines to me. Is the inner leg smooth next to the races, or all chewed up?

Most I've seen have done it once, and not again, and haven't displayed any damage if they haven't been ridden much once it's discovered.
 

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Discussion Starter · #9 ·
MendonCycleSmith said:
Not too sure on the damage though (to the inner leg) Looks a lot like grease lines to me. Is the inner leg smooth next to the races, or all chewed up?

Most I've seen have done it once, and not again, and haven't displayed any damage if they haven't been ridden much once it's discovered.
i cleaned the inner leg , that was grease ! it all looks good to me no scratches (only the wear and tear, think thats normal) and very smooth .





what do you guys think?
 

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Discussion Starter · #11 ·
Headshok'r said:
Have you shop send it back to C-dale. They'll take care of it for you.
i'm not the first owner and did not purchase it at my lbs (cannondale dealer)
isn't that a problem?
 

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alfa75 said:
i'm not the first owner and did not purchase it at my lbs (cannondale dealer)
isn't that a problem?
I won't say never, but I do believe that will put you in the paying for it territory.

That said, Headshok'r is well connected, and won't steer you wrong, wait to see what he says....;)
 

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Discussion Starter · #13 ·
Underneath the boot i found today a white nylon piece when disassembled the lefty from the frame. did not see it the other day.
what is that?
 

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alfa75 said:
Underneath the boot i found today a white nylon piece when disassembled the lefty from the frame. did not see it the other day.
what is that?
Dig deeper, you'll find a steel circlip below the nylon piece. That nylon ring functions as a barrier/spacer between the circlip and the race retainer.
 

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I would still have it sent back to C-dale; while not warranty, they are known to work with people. They will rebuild it properly and update any thing in it that needs it. At this point in time, it's not rideable as is.
 

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Discussion Starter · #16 · (Edited)
MendonCycleSmith said:
Dig deeper, you'll find a steel circlip below the nylon piece. That nylon ring functions as a barrier/spacer between the circlip and the race retainer.
yes found also the circlip:thumbsup:

@Headshok'r : i just came back from the dealer and he told me 2 things

1) the fork is for america only and was not sold in europe? an european dealer can not claim warranty even if i had the card????
2) since the merger with dorel things changed and is difficult to claim warranty.

also he told me that you have to go trough a dealer and as a consumer you can not go directly to cannondale?
i left the fork for repair, not to costly acording to him and he told me the circlip was not put proper in place at build .

what can i do if i still want to claim warranty? who can i contact?

thanks
 

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Discussion Starter · #17 ·
fixed

lefty fixed!:thumbsup: no damage found :)

hope it will not happen again! surely will check after every ride
 

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Discussion Starter · #18 ·
alfa75 said:
surely will check after every ride
and i did today ............after a test ride
I heard a sound(pop) when returning home and knew immediatly that it happend again:madman: exactly the same

i asked the lbs if the carbon where the circlip sits was ok and he said everything was good ,nothing to worrie.

why the circlip fails? or is it anything else? now i become a little bit scared that maybe it's something more serious ?
 

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As I said, I will not work on the carbon Lefty. Someone will. And if the groove is worn or damaged, the clip is not seated tightly, well you know.

Nothing is perfect, I know, regardless of who builds your fork or works on it, keep it maintained with inspections often and lube changes frequently.

PK
 

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Discussion Starter · #20 ·
a cannondale dealer did work on my fork ( he's trained to work on lefty's) and
i asked him if the groove was good or no broken peace's or something like that!

nothing was wrong according to him.

so i bring the fork back and we have to find what is causing this? also i asked him to contact cannondale to adres the problem maybe they know what to do?

how is the circlip locked on alu lefy?
 
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