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Any Trek carbon frame owners have the BB play issue?

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Any Trek carbon frame owners have the BB play issue?

Old 11-14-16, 09:01 AM
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Gasser5.2
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Any Trek carbon frame owners have the BB play issue?

Back in late September my 2016 Trek Domane 5.2 developed play in the cranks after only about 750 miles. The LBS I had just purchased it from brand new two months before said it was because the bottom bracket shell was just slightly too large for the BB90 to maintain a snug fit. This is apparently a fairly common issue with Trek carbon road bikes, and Trek has retrofitted some slightly larger BB90s to resolve the problem. The LBS installed one of these N/C, so I hoped the problem was resolved. I checked the cranks for play every few weeks, and everything seemed fine until a few days back I noticed some left foot and ankle discomfort while riding. At first I thought my cleat had moved, but after repeated adjustments it still didn't feel right. Then I remembered I hadn't check the cranks for play lately, and sure enough, they had 1mm or so of play, which may well have accounted for the discomfort.

So with just 1204 miles, back to the LBS I go and I'm told the BB shell was too worn to fix the problem, and a new frame would be needed. I was told to expect it to take 2-3 weeks minimum, and should know more in a day or two. I really love the bike, so am hoping I'll get squared away soon. Most importantly, I hope they can provide some assurance this won't be a recurring issue.

Anyone here had a similar issue with their Trek that can give me an idea of what to expect?
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Old 11-14-16, 09:12 AM
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Shouldn't this be on the carbon fiber sucks thread?
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Old 11-14-16, 09:25 AM
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Trek has a lifetime warranty on the frame so i'm sure it will be delt with. it just sucks that you will be without a bike for a month or so. Maybe the LBS can give you a loaner.

I had a Madone 4.6 and put 15k on it before upgrading to a Emonda SLR and just hit 11,000 miles in 2 years. neither had a single problem. My son races a Madone 6.5 and never a problem.

***** happens and sometimes there are defects.
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Old 11-14-16, 10:41 AM
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I've got 4 (less than 4 year old) carbon Treks in my garage with mileage varying from 150 to 6000 and none of them have any issues. I've personally sold north of 30 carbon Treks at the shop this year (34, actually) and none of them have come back in for any issues.

We've seen one bike this year with an issue similar to this and Trek had a replacement frame (albeit in a different color, but same model tier) out to us in less than a week. Note: the customer approved the color change.

Based on stock levels, what the frame is, I don't think 2 to 3 weeks is unreasonable. We were very surprised that the swap on our customer's frame was so quick. Typically it's 2-3.
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Old 11-14-16, 11:28 AM
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I have a carbon Trek with a SRAM BB86 GXP bottom bracket. I've never had any play, and to be honest I've never even removed the crank since the bike was new 4 years ago. The bearings still feel smooth so I haven't bothered.
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Old 11-14-16, 02:07 PM
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Get the LBS to Loctite 609 the bottom bracket in place while you are waiting for the replacement. I bet it will fix the problem for more than just a few weeks.
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Old 11-14-16, 02:51 PM
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Man,it's been years but I had that once with either the Madone 4.5 or the 5.9. I just don't remember. But it was a one time deal fixed by installing a bigger one if I remember correctly.
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Old 11-14-16, 04:31 PM
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I've had two Domane 5.9 frames, the first had about 5000 miles on it before it was replaced (for a completely different reason) and now the replacement has about 4000 miles on it. Neither have had this issue.
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Old 11-14-16, 11:01 PM
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my 2010 madone eventually developed a slight creak, but no "play". My new Emonda is totally fine. Loctite to the rescue, but I'm not so sure that will work if you are talking about actual play in the cranks, that was an issue a long time ago when they first developed the BB90, but haven't heard of that in any of their newer models.
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Old 11-15-16, 01:12 PM
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My 2014 Domane has had the right crank arm fall off while riding 3 different times. LBS tells me it is because the bearings are not quite tight enough in the bb shell. Supposed to be press fit, but from what I understand, there was very little pressing needed to put the bearing back in (right side only). Last time the crank arm fell off was this summer and have not had the issue since.


Kinda hoping it does break again so I can have an excuse to get the SLR frame
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Old 11-15-16, 07:07 PM
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Originally Posted by rpenmanparker View Post
Get the LBS to Loctite 609 the bottom bracket in place while you are waiting for the replacement. I bet it will fix the problem for more than just a few weeks.
They originally told me over the phone they were going to Loctite Green the BB and that should fix the problem. But when I brought it in the same guy looked at it and said that wouldn't work because the shell was too worn, so they'd have to warranty it.

Then today the same guy said he decided to Loctite it after all, and after stress testing it on some hills, he's confident the problem's solved.

Me, not so much. I don't know why he'd say it was too far gone to Loctite, then turn around and Loctite it after all. I'm thinking he was told to do that by the warranty guy. Going to pick it up tomorrow and stomp on it on some big hills.
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Old 11-15-16, 08:55 PM
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Originally Posted by Gasser5.2 View Post
They originally told me over the phone they were going to Loctite Green the BB and that should fix the problem. But when I brought it in the same guy looked at it and said that wouldn't work because the shell was too worn, so they'd have to warranty it.

Then today the same guy said he decided to Loctite it after all, and after stress testing it on some hills, he's confident the problem's solved.

Me, not so much. I don't know why he'd say it was too far gone to Loctite, then turn around and Loctite it after all. I'm thinking he was told to do that by the warranty guy. Going to pick it up tomorrow and stomp on it on some big hills.
In this case the Loctite should just be a way to keep you riding while your new frame is coming. You need to hold out for that. You should not IMO accept the old frame for permanent use.
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Old 11-15-16, 09:11 PM
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how does the play feel? or how can i check to see if i have it? thanks, OP and hope you get this squared away asap.
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Old 11-16-16, 09:08 AM
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Gasser, during this process of warranty assembly/disassembly/diagnosis, does the bike shop charge you for labor? (My LBS would, so I'm curious to see if that's normal.)
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Old 11-17-16, 07:31 AM
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Originally Posted by uscdigital View Post
how does the play feel? or how can i check to see if i have it? thanks, OP and hope you get this squared away asap.
Just bring one of your crank arms up to 12 o'clock and rock it towards you and back toward the bike to see if there's any play. You'll feel the play through the crank arm if there is any.
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Old 11-17-16, 07:32 AM
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Originally Posted by FlashBazbo View Post
Gasser, during this process of warranty assembly/disassembly/diagnosis, does the bike shop charge you for labor? (My LBS would, so I'm curious to see if that's normal.)
Absolutely not. I've never heard of a shop charging labor when there's no dispute something is covered under warranty.
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Old 11-17-16, 07:35 AM
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Originally Posted by Gasser5.2 View Post
Absolutely not. I've never heard of a shop charging labor when there's no dispute something is covered under warranty.
Not with Trek maybe, but the Specialized warranty requires you to pay labor for warranty repairs. (One reason I stopped riding their bikes.)
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Old 11-17-16, 07:40 AM
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Originally Posted by FlashBazbo View Post
Not with Trek maybe, but the Specialized warranty requires you to pay labor for warranty repairs. (One reason I stopped riding their bikes.)
Unless things have changed since I worked in bike shops, most, if not all, bike companies selling bikes in the US cover labor on warranty repairs for the first year but not thereafter.
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Old 11-17-16, 07:42 AM
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Originally Posted by rpenmanparker View Post
In this case the Loctite should just be a way to keep you riding while your new frame is coming. You need to hold out for that. You should not IMO accept the old frame for permanent use.
They're looking at the Loctite as the permanent fix, but have assured me in writing if it doesn't work they will replace the frame. For now, that's good enough for me as they've always done right by me in the past. If I do end up needing a new frame I'm going to insist on a free bike fit for my trouble.
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Old 11-17-16, 07:49 AM
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Originally Posted by Trakhak View Post
Unless things have changed since I worked in bike shops, most, if not all, bike companies selling bikes in the US cover labor on warranty repairs for the first year but not thereafter.
Things must have changed. Look up the Specialized warranty. "Owner must pay the cost of all labor" and "all work must be performed by an authorized Specialized dealer." Dumb.
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Old 01-10-17, 02:54 PM
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Just a follow-up. The BB loosened up again, so I took the bike to my LBS last night and they're going to warranty the frameset. Was told to expect a minimum turnaround of 3 weeks.
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Old 01-10-17, 04:17 PM
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Originally Posted by rpenmanparker View Post
In this case the Loctite should just be a way to keep you riding while your new frame is coming. You need to hold out for that. You should not IMO accept the old frame for permanent use.
Agreed. If a slightly over size BB isn't even working, this seem like a bodge. Temporary fix at best. Imo, and all that ...
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Old 01-10-17, 04:22 PM
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Originally Posted by Gasser5.2 View Post
Just a follow-up. The BB loosened up again, so I took the bike to my LBS last night and they're going to warranty the frameset. Was told to expect a minimum turnaround of 3 weeks.
Oh! sorry, wast realising I was replying an old post above. Im happy you will get an other frame. If the press fit isn't securing the BB in place the frame is likely out of spec anyway.
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Old 02-14-17, 07:58 AM
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Just to update - rather than replace the frame, Trek built up the BB shell with additional carbon fiber to provide a snugger fit. I haven't had a chance to log too many miles on it yet, so we'll see if this provides a permanent fix.
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Old 02-14-17, 12:47 PM
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Ah, the BB90 demon strikes again. I have the same frame, and I was hoping Trek had sorted through their "stretched" bottom bracket issues, but apparently not.
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