Clyde Seatpost woes, sliding down...
#26
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Does the seat tube have bosses for a bottle cage? I can't tell from the pictures. If so, get a bolt for the top bottle boss that is long enough that it extends into the seat tube far enough to act as a stop for the seatpost. Get a seatpost that is long enough to make contact with the bolt when it is installed. Between that and the seatpost clamp, the post will no longer slide. If there are no bottle cage bosses on the seat tube, find a local framebulder/repair shop to install one somewhere on the seat tube for this purpose.
#27
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Someone pointed me to your thread, I have a 2019 Jamis Renegade Escapade and first had the seat post slipping, then had the carbon seat post go kerplooey - see my post here.
I'm a 225 lb Clydesdale, but all my miles on that bike have been lightly loaded road touring or rail trail/tow path riding - very little gravel, no single track. I love that bike but not that seat post - I much prefer the alloy one the bike shop put in temporarily until Jamis sends a replacement carbon one. When the carbon one slipped, I didn't notice at first and the lower position caused my chubby things to rub the annoying square edged seat clamp on that carbon post, wearing holes in my best cycling shorts!
I'm a 225 lb Clydesdale, but all my miles on that bike have been lightly loaded road touring or rail trail/tow path riding - very little gravel, no single track. I love that bike but not that seat post - I much prefer the alloy one the bike shop put in temporarily until Jamis sends a replacement carbon one. When the carbon one slipped, I didn't notice at first and the lower position caused my chubby things to rub the annoying square edged seat clamp on that carbon post, wearing holes in my best cycling shorts!
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I would use a metal seat post. Then put another clamp around the seat post, just above the existing one. If it still slips, you could have 2, 3 or 4 clamps one on top of the other.
#29
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Someone pointed me to your thread, I have a 2019 Jamis Renegade Escapade and first had the seat post slipping, then had the carbon seat post go kerplooey - see my post here.
I'm a 225 lb Clydesdale, but all my miles on that bike have been lightly loaded road touring or rail trail/tow path riding - very little gravel, no single track. I love that bike but not that seat post - I much prefer the alloy one the bike shop put in temporarily until Jamis sends a replacement carbon one. When the carbon one slipped, I didn't notice at first and the lower position caused my chubby things to rub the annoying square edged seat clamp on that carbon post, wearing holes in my best cycling shorts!
I'm a 225 lb Clydesdale, but all my miles on that bike have been lightly loaded road touring or rail trail/tow path riding - very little gravel, no single track. I love that bike but not that seat post - I much prefer the alloy one the bike shop put in temporarily until Jamis sends a replacement carbon one. When the carbon one slipped, I didn't notice at first and the lower position caused my chubby things to rub the annoying square edged seat clamp on that carbon post, wearing holes in my best cycling shorts!
#30
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I also had the trouble of a sliding seat post. My solution was to switch from a bolt down clamp to a quick release one. For some reason that worked out much better for me.
#31
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I also put a new bolt in my Salsa collar on my Fargo. The internal hex head was starting to round from over-tourqing it. I’m going to get a stronger bolt (non stainless steel) for my Salsa Fargo clamp from the hardware store. I might even find an external hex head which will make for better torque ability using a crescent wrench.
appropriate GIF I found
#32
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Update:
I added a hose clamp above the seat post clamp. I still need to (over) tighten for the system to work, but it has been working. My Whiskey post is getting a little bit chewed up and will need to eventually be replaced with a metal one.
im concluding the Jamis integrated seat post clamp is just an inferior design for us Clydesdales. Define weak point on an otherwise great bike. I’ll be sharing this post with Jamis.
I also had some post sliding on my Salsa Fargo. But the quick adjustment lever clamp solved that. Note it’s also an aluminum seat post.
I added a hose clamp above the seat post clamp. I still need to (over) tighten for the system to work, but it has been working. My Whiskey post is getting a little bit chewed up and will need to eventually be replaced with a metal one.
im concluding the Jamis integrated seat post clamp is just an inferior design for us Clydesdales. Define weak point on an otherwise great bike. I’ll be sharing this post with Jamis.
I also had some post sliding on my Salsa Fargo. But the quick adjustment lever clamp solved that. Note it’s also an aluminum seat post.
#33
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Sometimes the simplest solutions are the best. Even though not elegant, the hose clamp should do the trick.
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80 Mercian Olympic, 92 DB Overdrive, '07 Rivendell AHH, '16 Clockwork All-Rounder