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Surly LHT forward-back rocking on descents

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Surly LHT forward-back rocking on descents

Old 03-22-21, 06:18 PM
  #26  
Pacme74 
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Yes! The chain jumps so I’m planning a visit anyway.
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Old 03-22-21, 07:19 PM
  #27  
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Originally Posted by Pacme74 View Post
that smooth-talking gentleman with the almost-handlebar Ďstache is reason Iím where I am! 100% agree.
he's a great presenter, they did a good job choosing him as their video teaching mechanic.
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Old 03-23-21, 11:55 AM
  #28  
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Re. Having someone show you how.

I deal with a small shop owned by the mechanic of more than thirty years. When I got into disc brakes I said I wanted him to show me how to replace/adjust pads. I bought the pads, he did the rear and I did the front.

Same some year's ago with spoke truing. I could do it somewhat but paid him $20 to give me his version of a tutorial when business was slow. I do my own work but he's the guy I go to when I get stumped mechanically.
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Old 03-23-21, 06:20 PM
  #29  
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Originally Posted by Happy Feet View Post
Re. Having someone show you how.

I deal with a small shop owned by the mechanic of more than thirty years. When I got into disc brakes I said I wanted him to show me how to replace/adjust pads. I bought the pads, he did the rear and I did the front.

Same some year's ago with spoke truing. I could do it somewhat but paid him $20 to give me his version of a tutorial when business was slow. I do my own work but he's the guy I go to when I get stumped mechanically.
I've done this sort of thing often with my local bike shops going back decades. Knowing that I was into touring and wanting to be competent for any mechanicals on a trip, they've always been open to checking my work and answering questions.
really worth having a good relationship with a bike store and employees.
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Old 03-23-21, 06:49 PM
  #30  
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Originally Posted by Happy Feet View Post
Re. Having someone show you how.

I deal with a small shop owned by the mechanic of more than thirty years. When I got into disc brakes I said I wanted him to show me how to replace/adjust pads. I bought the pads, he did the rear and I did the front.

Same some year's ago with spoke truing. I could do it somewhat but paid him $20 to give me his version of a tutorial when business was slow. I do my own work but he's the guy I go to when I get stumped mechanically.
Originally Posted by djb View Post
I've done this sort of thing often with my local bike shops going back decades. Knowing that I was into touring and wanting to be competent for any mechanicals on a trip, they've always been open to checking my work and answering questions.
really worth having a good relationship with a bike store and employees.
great point. I did a similar thing with a painter/trim finisher: hired him for an hour consult on the best way to refinish my interior trim (knowing I was never going to hire him to do it due to the cost).
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Old 03-23-21, 07:08 PM
  #31  
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I would add though that with a good bike store with good employees etc, they know I'll buy "stuff" from them for years, lights, locks, bikes for my kids, and have them do mechanic work that is beyond my ability or what needs very specialized tools-- so just want to emphasize trying to support local bike stores.

around here, bike stores are bonkers busy, and the continuing covid situation means limited entry of customers.
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Old 03-26-21, 03:05 PM
  #32  
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Quick and partial update: took the LHT to the original purchase bike shop to check headset and make an adjustment (separate issue - front derailleur, will research threads on that one). Apparently the stem I installed had the right amount of compression but there was one stem bolt not quite tight enough. Overall, the mechanic did not see any reason why there would have been fore-aft rocking unless it was brakes.

I plan to retrace that ride soon and will be paying attention to my braking in case I flunked the memory test and was actually applying some brakes.

I'll post a review after the ride - may be this weekend or next.
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Old 04-29-21, 07:35 AM
  #33  
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Thank you and Verdict

Originally Posted by SalsaShark View Post
It sounds like you have a loose headset.
Originally Posted by fishboat View Post
For the OP..still thinking a loose headset from the stem change.
Originally Posted by djb View Post
have someone show you headset adjustment in person, it takes 10 seconds and hopefully you pick up on the feel for proper adjustment.
Originally Posted by saddlesores View Post
could you maybe return to place of your new purchase,
ask the mech there to take a peek....?
Originally Posted by Tourist in MSN View Post
After checking headset, Try it on fairly new smooth pavement, then the bike should ride perfectly smooth.
Here is the final verdict: it was a mystery experience and has not been repeated.

For the full story: I did take the bike back to the original shop and they checked the (new stem and) headset - all was fine and the right torque. I had a derailleur adjustment (separate issue now - three chain rings on the front seem to be a wee bit too wide for the range of movement from the stock derailleur) too. I have spent a number of weeks seeking out a non-painful saddle to allow a repeat of the same 40 mile ride. In the mean time, I tested a couple of saddles on another couple of shorter hills and felt the same fore-aft sensation, but in relationship to obvious bumps in the asphalt. I also tested the brakes with light pressure going down hills. Once I found the saddle for me (a brooks b17 imperial and now butchered just a tad), I had a repeat ride. NO ROCKING. so.... I'm chalking it up to oversensitivity to new bike performance and also maybe regular bumps in the asphalt on that particular stretch of road.

Thank you all! Gains for me: headset knowledge, park tools videos, and a refined focus on road feel vs mech issues.
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Old 04-29-21, 08:17 AM
  #34  
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Originally Posted by Pacme74 View Post
Here is the final verdict: it was a mystery experience and has not been repeated.

For the full story: I did take the bike back to the original shop and they checked the (new stem and) headset - all was fine and the right torque. I had a derailleur adjustment (separate issue now - three chain rings on the front seem to be a wee bit too wide for the range of movement from the stock derailleur) too. I have spent a number of weeks seeking out a non-painful saddle to allow a repeat of the same 40 mile ride. In the mean time, I tested a couple of saddles on another couple of shorter hills and felt the same fore-aft sensation, but in relationship to obvious bumps in the asphalt. I also tested the brakes with light pressure going down hills. Once I found the saddle for me (a brooks b17 imperial and now butchered just a tad), I had a repeat ride. NO ROCKING. so.... I'm chalking it up to oversensitivity to new bike performance and also maybe regular bumps in the asphalt on that particular stretch of road.

Thank you all! Gains for me: headset knowledge, park tools videos, and a refined focus on road feel vs mech issues.
Glad it worked out for you.

Thanks for the update.
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Old 04-29-21, 08:18 AM
  #35  
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hey, thats life, learning new stuff one bit at a time, and as with more riding experience, sometimes it helps to actively think about a "this" feel or "that" feel about different aspects of riding-- helps you become more attuned to things that you never paid attention to before.
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