Seat post clamp broken?

Jul 18, 20 17:45

Post #1 of 15 (1266 views)

I think I overtightened my seatpost clamp. The post kept slipping on my ride today and I noticed the two sides of the clamp were completely touching and the bolt seems to have broken through the metal on one side.

Am I seeing this correctly? I am having a hard time finding a 30.9 clamp online, which is what I think I need for my 2012 Cannondale CAAD10.

Last edited by: teichs42: Jul 18, 20 17:52

Re: Seat post clamp broken? [teichs42] [ In reply to ]

Jul 18, 20 22:07

Post #2 of 15 (1235 views)

I believe that the diameter of your seatpost is 30.9mm.

The seatpost clamp is probably 34.9mm.

Re: Seat post clamp broken? [jimatbeyond] [ In reply to ]

Jul 18, 20 22:36

Post #3 of 15 (1229 views)

jimatbeyond wrote:

I believe that the diameter of your seatpost is 30.9mm.

The seatpost clamp is probably 34.9mm.

The seatpost is 27.2

Re: Seat post clamp broken? [teichs42] [ In reply to ]

Jul 18, 20 22:55

Post #4 of 15 (1222 views)

Is the outside diameter of your seat tube 30.9mm?

Re: Seat post clamp broken? [teichs42] [ In reply to ]

Jul 19, 20 4:13

Post #5 of 15 (1202 views)

First thing I would do is remove the clamp, take the post out and inspect everything to make sure the post/mast hasn't been crushed. I would be concerned that the clamp is now tightened past where it used to go.

If all is well, looks like 30.9 is the right size for the caad 10-12 bikes, that does seem to be an odd size.

Re: Seat post clamp broken? [teichs42] [ In reply to ]

Jul 19, 20 10:57

Post #6 of 15 (1166 views)

https://www.ebay.com/itm/153957666573

Re: Seat post clamp broken? [jimatbeyond] [ In reply to ]

Jul 19, 20 12:01

Post #7 of 15 (1157 views)

jimatbeyond wrote:

https://www.ebay.com/itm/153957666573

Yes, it is 30.9. I saw that one. Can’t live with red haha! Think I found one from stage21bikes.com, never heard of them though

Re: Seat post clamp broken? [Zissou] [ In reply to ]

Jul 19, 20 12:03

Post #8 of 15 (1155 views)

Zissou wrote:

First thing I would do is remove the clamp, take the post out and inspect everything to make sure the post/mast hasn't been crushed. I would be concerned that the clamp is now tightened past where it used to go.

If all is well, looks like 30.9 is the right size for the caad 10-12 bikes, that does seem to be an odd size.

Frame doesn’t look to be damaged. I’m concerned about that too. Yeah, I have found it very hard to find but think I have a lead!

Re: Seat post clamp broken? [teichs42] [ In reply to ]

Jul 19, 20 12:45

Post #9 of 15 (1143 views)

Paint it black.

Re: Seat post clamp broken? [jimatbeyond] [ In reply to ]

Jul 19, 20 12:53

Post #10 of 15 (1140 views)

jimatbeyond wrote:

Paint it black.

Not a bad idea. I actually really want an orange seatpost clamp. This is how I could get it. Thanks!

Last edited by: teichs42: Jul 19, 20 12:53

Re: Seat post clamp broken? [jimatbeyond] [ In reply to ]

Jul 24, 20 12:42

Post #11 of 15 (1068 views)

jimatbeyond wrote:

Paint it black.

Any suggestions on what type of spray paint would be good on a seatpost clamp?

Re: Seat post clamp broken? [teichs42] [ In reply to ]

Jul 24, 20 12:50

Post #12 of 15 (1064 views)

I would scuff it up with some sandpaper and buy whatever paint at Home Depot that says it is good on metal.

Re: Seat post clamp broken? [jimatbeyond] [ In reply to ]

Jul 24, 20 12:57

Post #13 of 15 (1062 views)

Just be careful not to scuff it too much and get down to bare aluminum. The anodizing is a good protective layer from sweat corrosion.

Re: Seat post clamp broken? [teichs42] [ In reply to ]

Jul 24, 20 13:15

Post #14 of 15 (1055 views)

teichs42 wrote:

jimatbeyond wrote:

Paint it black.

Any suggestions on what type of spray paint would be good on a seatpost clamp?

I 'painted' and old frame with PlastiDip and it worked really well. Plus, it's easy to remove if you decide you don't like it.

Re: Seat post clamp broken? [Daniel Clarke] [ In reply to ]

Jul 24, 20 14:29

Post #15 of 15 (1047 views)

Daniel Clarke wrote:

teichs42 wrote:

jimatbeyond wrote:

Paint it black.

Any suggestions on what type of spray paint would be good on a seatpost clamp?

I 'painted' and old frame with PlastiDip and it worked really well. Plus, it's easy to remove if you decide you don't like it.

I was thinking about it but my brother has used it and says it tends to dry matte, I'm looking more for a gloss finish

Our Partners

transition-DOT-area-AT-slowtwitch-DOT-com

Advertise with us

©1999-2024 Slowtwitch, Inc., and Slowtwitch.com
Reproduction of material from any Slowtwitch.com page
without written permission is strictly prohibited.