Domane Isospeed Decoupler Fail - Page 3
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  1. #51
    .je
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    Quote Originally Posted by PoorInRichfield View Post
    You want Trek to spend hundreds of thousands of dollars on a recall because one bike had an issue?
    me? I don't care it's not my bike
    Trek? There's a precedent for exactly this sort of design flaw, so they should consider treating this and any other customers' complaint properly, before the need for another public recall or suit shows up.
    Otherwise I'm just typing.

  2. #52
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    Quote Originally Posted by .je View Post
    me? I don't care it's not my bike
    Trek? There's a precedent for exactly this sort of design flaw, so they should consider treating this and any other customers' complaint properly, before the need for another public recall or suit shows up.
    Otherwise I'm just typing.
    An issue with possible failures that cause loss of steering tend to be a lot more serious than one that reduces your ass comfort to that of riding one of the various brands that don't have an iso speed decoupler. This particular issue doesn't seem common or even serious in terms of rider safety and as such it would be a bad reason to start a recall for. If it was something happening on a large number of bikes or that could result in serious injury or death then yeah, start that recall.

  3. #53
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    I have a 2015 Domane 5.9, nearly 4 yr old now with 21,000 miles. I bought it because my 1999 Trek 5200 has performed almost flawlessly for about 38,000 miles. My 2015 has been kept in a humidity controlled environment for its entire life and obsessively kept clean, although not routinely brought into a shop. I recently took it into the nearby Trek shop and was told that the corrosion of the isospeed assembly was so severe they could not remove the old isospeed parts to replace them. The recommendation was to have them strip all the components off and send the frame to Trek to try to remove the pieces. If Trek broke the frame they would not be responsible and would only give me 20% off a new frame, which they would do even if I told them my bike fell off the car and got run over! After I submitted a scathing on-line review of the performance of Trek and the shop, it was suggested that I bring the bike to the other Trek shop in town, where they said they had dealt with the outer bearing race being corroded and stuck in the frame. They used a Dremel tool to cut it out a piece at a time. They were successful. The shop did not charge for their labor and submitted a claim to Trek for the replacement parts, quoting the Trek manual (pg 39...thanks for posting that critical piece of info!) which effectively said don't lubricate the isospeed.

    My conclusion: Trek screwed up in several ways...poor choice of materials for the isospeed bearings, ridiculous advice saying there's no need to maintain the isospeed, irresponsible stewardship by recognizing that the corrosion issue exists but not notifying customers to bring the bike in for inspection to prevent extreme consequences. Kudos to the 2nd Trek shop who did handle the situation professionally and succeeded in resolving the problem.

  4. #54
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    Quote Originally Posted by BobinMtP View Post
    I have a 2015 Domane 5.9, nearly 4 yr old now with 21,000 miles. I bought it because my 1999 Trek 5200 has performed almost flawlessly for about 38,000 miles. My 2015 has been kept in a humidity controlled environment for its entire life and obsessively kept clean, although not routinely brought into a shop. I recently took it into the nearby Trek shop and was told that the corrosion of the isospeed assembly was so severe they could not remove the old isospeed parts to replace them. The recommendation was to have them strip all the components off and send the frame to Trek to try to remove the pieces. If Trek broke the frame they would not be responsible and would only give me 20% off a new frame, which they would do even if I told them my bike fell off the car and got run over! After I submitted a scathing on-line review of the performance of Trek and the shop, it was suggested that I bring the bike to the other Trek shop in town, where they said they had dealt with the outer bearing race being corroded and stuck in the frame. They used a Dremel tool to cut it out a piece at a time. They were successful. The shop did not charge for their labor and submitted a claim to Trek for the replacement parts, quoting the Trek manual (pg 39...thanks for posting that critical piece of info!) which effectively said don't lubricate the isospeed.

    My conclusion: Trek screwed up in several ways...poor choice of materials for the isospeed bearings, ridiculous advice saying there's no need to maintain the isospeed, irresponsible stewardship by recognizing that the corrosion issue exists but not notifying customers to bring the bike in for inspection to prevent extreme consequences. Kudos to the 2nd Trek shop who did handle the situation professionally and succeeded in resolving the problem.
    Another example of Trek Fail.
    2nd Shop +1.
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  5. #55
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    I thought I'd mention a problem I currently have with my Domane SLR7. I took it for a service and they found that the hole in the seatpost where the Isospeed pivot fits had worn and was oval. The shop mechanic (a Trek only dealer) tells me he's never seen this before and as Trek don't supply just the seatpost he said I might need a new frame. Fortunately another SLR had come in at the same time with a broken chainstay so they have fitted the seatpost from that - at no cost.
    Although I'm happy with the outcome, I think it should have been a new frame under warranty.

  6. #56
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    So, I have purchased 2 Trek bikes. My mtb and my daughterís commuter. I have been very happy with my local Trek dealer and both bikes. I have not had a warranty issue. This thread makes me less, not more, comfortable about working with the company. I have confidence in my local shop, but this post gives me pause. Do I need to blow up on social media to get my warranty honored? Iím thinking I may have made my last Trek purchase. Go ahead and be Specialized. Just go without me.
    Last edited by PBL450; 05-24-2019 at 03:54 AM.
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  7. #57
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    Quote Originally Posted by Herbieuk View Post
    I thought I'd mention a problem I currently have with my Domane SLR7. I took it for a service and they found that the hole in the seatpost where the Isospeed pivot fits had worn and was oval. The shop mechanic (a Trek only dealer) tells me he's never seen this before and as Trek don't supply just the seatpost he said I might need a new frame. Fortunately another SLR had come in at the same time with a broken chainstay so they have fitted the seatpost from that - at no cost.
    Although I'm happy with the outcome, I think it should have been a new frame under warranty.
    Okay, this is a very misleading post. The IsoSpeed pivot is not in the seat post at all - it is in the seat tube, which cannot be replaced as it is an integral part of the frame. You had a problem with the seat mast cap, which has nothing to do with the IsoSpeed design as it is also used on the Emonda. There is no way that replacing a seat mast cap could "fix" an ovalized pivot hole in the seat tube.
    Life is short... enjoy the ride.

  8. #58
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    Quote Originally Posted by PBL450 View Post
    So, I have purchased 2 Trek bikes. My mtb and my daughterís commuter. I have been very happy with my local Trek dealer and both bikes. I have not had a warranty issue. This thread makes me less, not more, comfortable about working with the company. I have confidence in my local shop, but this post gives me pause. Do I need to blow up on social media to get my warranty honored? Iím thinking I may have made my last Trek purchase. Go ahead and be Specialized. Just go without me.
    Absolutely not the case - you shouldn't have to jump through hoops to get help from us ever. We have a great warranty team in place that is always an email or phone call away for those who prefer to speak with them and they back our retail network by offering their full support. We try to make a warranty claim as painless as possible without having to jump through hoops. All you ever need to do is bring your bike into your local Trek dealer and they will take it from there. If you ever had questions regarding a claim, our team would be happy to chat!
    Last edited by [email protected]; 06-03-2019 at 01:48 PM.
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  9. #59
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    Quote Originally Posted by Herbieuk View Post
    I thought I'd mention a problem I currently have with my Domane SLR7. I took it for a service and they found that the hole in the seatpost where the Isospeed pivot fits had worn and was oval. The shop mechanic (a Trek only dealer) tells me he's never seen this before and as Trek don't supply just the seatpost he said I might need a new frame. Fortunately another SLR had come in at the same time with a broken chainstay so they have fitted the seatpost from that - at no cost.
    Although I'm happy with the outcome, I think it should have been a new frame under warranty.

    Happy to hear that your bike was able to get fixed properly! In some cases with warranty, we do look at a replacement frame if needed, but luckily that part was available to give you the quickest possible turnaround time it seems.
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  10. #60
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    Quote Originally Posted by Marc View Post
    And I quote:

    "The IsoSpeed mechanism is designed to last the lifetime of the bicycle without service. Do not lubricate it. Keep it clean with water and soft cloth. If the mechanism makes noise or exhibits lateral play, the design allows easy replacement of the mechanism. Take your bicycle to your retailer for service"


    Pg 39: https://trek.scene7.com/is/content/T...ndum_en-US.pdf accessed via: https://www.trekbikes.com/us/en_US/manuals/

    Bold emphasis mine. I'd pick a bone with them. Basically reads "don't mess with it until something is wrong with it--then we'll fix it". Which is exactly what the OP did, and Trek ain't doing.
    I have been watching this thread for some time because I too am having problems with what I strongly suspect are the front and rear isospeed decouplers on my 2017 Domane SLR7. And I finally got admitted to the forum

    I am surprised that Trek say (about the isospeed decoupler) '... without service. Do not lubricate it.' because the very first point of the assembly instructions for the (rear) isospeed in the service manual (pg. 4) states:

    '1. Apply grease to the bores of the seat mast as well as the bores on the frame.'

    So we have a unit that moves, has bearings, takes heavy loads and requires grease. That normally means it attracts dirt, needs cleaning/servicing and eventually wears out?

    My front isospeed decoupler started to develop after c. 1 year / 7 000 km a clunk under quick heavy braking as if the bearings were re-seating themselves. Tightening the compression plug and top cap to the recommended torque does not fix it so I think it needs complete disassembly, inspection and service?

    I won't be taking it to my Trek dealer because they went bust and I have given up on others in my area of Australia due to past poor servicing.

    So the advise from forum members would be warmly welcomed.

    Apart from reversing the assembly instructions, are there any service manuals for the front decouplers?

    Many thanks

  11. #61
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    An old discussion rises again...
    I'm reading this because I too have a 2015 Domane 5.2 with a bunch of thousands of miles on it and I very much love it. I also have concerns about the decoupler, but there's a caveat: I bought mine as a private transaction from someone who put ~250 miles on it and wasn't in to it. My gain.

    But here's the thing, before I made this purchase I visited three Trek dealers in my immediate area (Upstate NY) and contacted a fourth through their web page. I was ready to buy and very interested in this bike. And in all but the fourth I was ignored to insulted. The fourth was interested in a deal but they're a 3 hour drive away which kinda made that a problem. I've documented my encounters elsewhere on the web and named names so I won't go into the gory details, but in a previous life I wrenched in shops, some pretty high profile, to support my racing, touring and commuting, years ago. I know how not to be a dick.

    (One time I was stumped by a shifting issue and made an appointment with a Trek dealer in Saratoga, NY and on my arrival was treated to 20 minutes with a tech who clearly was not interested in helping, or being nice at all, and clearly didn't know how to adjust a B screw and seemed fixated on castigating me for using Jagwire cables.)

    So I'm reviving this post because it's a pretty specific technical question and I didn't want to have some great info duplicated, and I see there are some Trek people reading. I'm able to replace this assembly myself but don't know how to get the parts. Is it possible? At one point I needed to replace the cable guide that exits the head tube and that turned into an US$17.00 ordeal, with the aforementioned shop. No interest in stepping foot in there again.

    Thanks in advance.

  12. #62
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    I wouldn't be surprised if Trek dealers refuse to sell you the parts and require you to drop the bike off for the shop to repair.

    Keep us informed on your progress.

  13. #63
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    If you post it in the Trek forum you will get a better response I think, including the part number.
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    Quote Originally Posted by Srode View Post
    If you post it in the Trek forum you will get a better response I think, including the part number.
    I normally would but since the moderators choose to leave this here, and as I said, I preferred to keep this fairly specific concern tied to one discussion for anyone else searching on it.

    If I knew the part number that definitely would be useful information to search on. I can only find a couple minor references online to a "Boone" decoupler which is spotty in availability and unknown if it fits a 2015 Domane.

  15. #65
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    The Trek website is a frustrating place.

    This looks like the Boone part you mentioned. https://www.trekbikes.com/us/en_US/e...olorCode=black

    I post it because the text invites you to contact their customer service for compatibility details. Good luck.

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    This is the main reason I bought a non-Trek bike recently. Loved LeMond Racing cycles and the line was pretty much killed because of the Greg/Lance thing.........and I think we all know who ended up being the bad guy in that fight.

  17. #67
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    Quote Originally Posted by ivanthetrble View Post
    This is the main reason I bought a non-Trek bike recently. Loved LeMond Racing cycles and the line was pretty much killed because of the Greg/Lance thing.........and I think we all know who ended up being the bad guy in that fight.
    It was inevitable anyway. Trek also killed off Klein, Gary Fisher, and Bontrager became just components.

  18. #68
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    Quote Originally Posted by MDM View Post
    It was inevitable anyway. Trek also killed off Klein, Gary Fisher, and Bontrager became just components.
    'Just' components? While I agree it was inevitable it's a HUGE brand that does millions and millions of dollars.
    #promechaniclife

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    Quote Originally Posted by cxwrench View Post
    'Just' components? While I agree it was inevitable it's a HUGE brand that does millions and millions of dollars.
    True, but its the only option you have in many Trek-controlled shops. It's not just winning on its own merits

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    isn't this the tread I first use the expression noodlizer?

  21. #71
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    Quote Originally Posted by cxwrench View Post
    'Just' components? While I agree it was inevitable it's a HUGE brand that does millions and millions of dollars.
    It's just a house brand, used to be called Matrix. Bontrager used to make bicycles before Trek bought them.

  22. #72
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    Quote Originally Posted by DaveG View Post
    True, but its the only option you have in many Trek-controlled shops. It's not just winning on its own merits
    Hasn't this always been Trek's business model? Matrix rims, then Rolf wheels, now Bontrager parts. Didn't these once independent companies get sucked in and taken over by Trek? Can someone even buy Bontrager parts on the open market?

  23. #73
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    Quote Originally Posted by pmf View Post
    Hasn't this always been Trek's business model? Matrix rims, then Rolf wheels, now Bontrager parts. Didn't these once independent companies get sucked in and taken over by Trek? Can someone even buy Bontrager parts on the open market?
    Lots of them available on the Trek website. The wheels, shoes and helmets are favorites of mine.

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    Quote Originally Posted by Coolhand View Post
    Lots of them available on the Trek website. The wheels, shoes and helmets are favorites of mine.
    I don't think that is what he meant by "open market". Can you buy a Bontrager part from a store that is not a Trek store? I think the answer is no

  25. #75
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    Quote Originally Posted by Coolhand View Post
    Lots of them available on the Trek website. The wheels, shoes and helmets are favorites of mine.
    OK, let me rephrase that .... can someone buy Bontrager merchandise from anyone except Trek? Is it exclusively sold by Trek? And at Trek bike shops?

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