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how many seat post binder bolts does it take - - -(8 posts)

how many seat post binder bolts does it take - - -liv2padl
Jun 1, 2002 5:08 PM
to install a new saddle. for me it's at least TWO. i can't believe it .. EVERY time i have installed a new saddle, i snap the seat post binder bolt. how do i manage that? why using the "just one more turn" procedure. that damn bolt has been the death of me for years. it's the only bolt on a bike that has no real "end-point" ... you don't turn it until it's tight, you turn it until the saddle doesn't move anymore which is supposed to be short of that "SNAP" that i always manage to pull off ... this followed by the turned half popping out of the binder and rolling across the garage floor, to the tune of "EXPLETIVES DELETED". i've even tried titanium bolt binders .. but they can't hold up to my gorilla grip either.

so i've just purchased 4 more from Branford. that ought to buy me at least two more tries at a saddle i can ride more than 50 miles without ending up with a crippled buttox.

Jun 1, 2002 5:31 PM
could you possibly have used the wrong seatpost diameter? say, 27.0 or 26.8 in a 27.2mm post? this seems to be the most likely problem.
The problem probably isn't in the boltelviento
Jun 1, 2002 7:45 PM
So does your post slip when installed? If not why tighten the bolt so much? If the it slips even if you tighten it much, then either you are using a wrong size post or the frame inside surface isn't very round. I am a heavy guy and only had this problem on a low end bike I used years ago.
no, seat post doesn't slip - - -liv2padl
Jun 2, 2002 1:50 AM
when i ultimately install it properly, all is well. i just haven't learned when enough is enough. i will though.
Wipe the excess greaseAFred
Jun 2, 2002 4:25 AM
off the seatpost. I mean really wipe it down leaving only a non-visible coating for protection. I had a similar problem on a steel frame/seatpost a few years back and found that I simply had too much grease on the post. No matter how tight the bolt is, the post will keep sliding.
no, seat post doesn't slip - - -elviento
Jun 2, 2002 7:11 PM
It's not hard to learn to NOT tighten too much as long as you overcome the mental barrier. Do this: just fasten it to an extent that you think might be too loose, then go for a test ride. If it doesn't slip, then you are set. If it slips, tighten the bolt by 90-120 degrees. Test ride again. Repeat if necessary until it no longer slips. In fact you can bring an allen wrench and make a few adjustments on one test ride. I can't see why it can'be accomplished in 10 minutes.

My experience is that on aluminum/carbon/ti bikes, it doesn't take much tightening to secure the seatpost. Steel is not too difficult either if the inside surface is smooth and round. The easiest combination is carbon on carbon, if that helps.
re: how many seat post binder bolts does it take - - -jw2
Jun 2, 2002 4:46 AM
If these are Campy bolts, make sure to lube the threads and use the washer. Or if you are using the washer try adding one more. What often happens is that without the washer(s) the bolt can actually bottom out. There was recently a thread about this over on the components forum- a search over there may give you more info.
re: how many seat post binder bolts does it take - - -daniell
Jun 2, 2002 4:44 PM
My seatpost was constantly slipping no matter how tight I made the bolt. It turned out that the bolt was too long. I changed binder bolts, no more problem.