What the f***?! Knee pain?!

Quoted message said:

By the way, can anybody recommend torque settings for a Thomson seatpost?

You have bigger issues with your seat tube if it's been slipping through
regular riding. Sometimes the ID of the seat tube is a smidgen too big and
it causes problems.

My XTC takes a 31.7 post and I'm using a 31.6 with no problems. It's a big
loose-feeling when the clamp is loose, but it doesn't twist or move at all
when tightened down with a minitool.

My AC takes a 27.2 with a shim, and I can twist the seat left and right with
the ample cheeks of my buttocks. If it slips down, I don't notice, because
I raise and lower it on a very regular basis. I put it on REALLY tight.

--
Phil, Squid-in-Training

"ZeeExSixAre" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Quoted message said:

By the way, can anybody recommend torque settings for a Thomson

seatpost?

Quoted message said:

You have bigger issues with your seat tube if it's been slipping through
regular riding. Sometimes the ID of the seat tube is a smidgen too big

and

Quoted message said:

it causes problems.

My XTC takes a 31.7 post and I'm using a 31.6 with no problems. It's a

big

Quoted message said:

loose-feeling when the clamp is loose, but it doesn't twist or move at all
when tightened down with a minitool.

My AC takes a 27.2 with a shim, and I can twist the seat left and right

with

Quoted message said:

the ample cheeks of my buttocks. If it slips down, I don't notice,

because

Quoted message said:

I raise and lower it on a very regular basis. I put it on REALLY tight.

Mine takes a 29.4 post. Yep, you heard it right. Indy uses a larger diameter
tube than most steel frame builders. My front mech is a 31.8, on a steel
frame.

When I used a torque wrench, I realized how much torque I *was not* putting
on the clamp, when going by feel. Only time will tell, though. If it slips
again, I'll up the torque some more, but I doubt if it becomes a problem.
The seat post is tighter than '[censored]'s Hatband' in the seat tube when the
clamp is loose.

ZeeExSixAre said:

You have bigger issues with your seat tube if it's been slipping through
regular riding. Sometimes the ID of the seat tube is a smidgen too big and
it causes problems.

Slipping seatposts is a fairly common complaint here. 1.5 inches is quite
a bit, though - maybe it depends on how much you spend seated.

My carbon fiber frame has a really slick seat tube, so I have to tighten
the clamp with all the force I can muster - and it still slips a little.

--
-BB-
To reply to me, drop the attitude (from my e-mail address, at least)

mojo deluxe said:

While riding yesterday, my knees start hurting. This never happens. I'm
thinking what the fjvck?! When I go to put the bike back into the repair
stand, I realize my seatpost has slipped about 1-1/2" into the seat tube.
It's amazing how such a small thing can make such a big difference.

By the way, can anybody recommend torque settings for a Thomson seatpost?
When I reset the post, I torqued it to 65 in/lbs. Before, it was just by
feel, since Thomson did not include any torque settings in the instructions.

I never use a Torque wrench for the seat clamp, just go really tight by
hand.

Make sure the post and tube are clean, and lubed. I had your same
situation, cleaned/re-lubed... hasn't slipped since.
--
Slacker

"BB" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

ZeeExSixAre said:

You have bigger issues with your seat tube if it's been slipping through
regular riding. Sometimes the ID of the seat tube is a smidgen too big

and

Quoted message said:

Quoted message said:

it causes problems.

Slipping seatposts is a fairly common complaint here. 1.5 inches is quite
a bit, though - maybe it depends on how much you spend seated.

Since I'm getting my riding legs back, after over three years off, I spend
more time seated than I should. Still, though I don't think I had the clamp
tight enough. At least I hope.

Quoted message said:

My carbon fiber frame has a really slick seat tube, so I have to tighten
the clamp with all the force I can muster - and it still slips a little.

Not to mention, some of us grease the seat post.

mojo deluxe said:

While riding yesterday, my knees start hurting. This never happens. I'm
thinking what the fjvck?! When I go to put the bike back into the repair
stand, I realize my seatpost has slipped about 1-1/2" into the seat tube.
It's amazing how such a small thing can make such a big difference.

By the way, can anybody recommend torque settings for a Thomson seatpost?
When I reset the post, I torqued it to 65 in/lbs. Before, it was just by
feel, since Thomson did not include any torque settings in the instructions.

Check to see if your seat post is round. I had a Thomson that was
ovalized. I don't know if this was caused by the seat angle of my
frame (Klein Palomino-real laid back), or if it was defective, but my
LBS replaced it.

Shawn