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loose seat post cramp

PostPosted: Fri Dec 22, 2006 1:57 am
by JJ
Hi, I found an interesting report at a forum.
The user of A-bike said the problem of his bike is its loose quick release cramp of the seat post.
According to him, after three weeks in use, the cramp becomes loose and the saddle does not stay still.
He tried to fasten by rotating the screw of the cramp.
However, because there is little space between the screw and another screw which fixes the top tube, he could not insert a hex key in there to fasten the screw.
I confirmed this situation by myself and thought this is a serious problem about A-bike design.
The manual does not say anything about this issue.

How are you dealing with this problem?

a solution

PostPosted: Fri Dec 22, 2006 10:31 am
by Binch Shin
This is a solution by KoreanAbikeCafe.

How to fasten up the bolt of SeatClamp


Re: a solution

PostPosted: Sat Dec 23, 2006 3:37 pm
by JJ
Binch Shin wrote:This is a solution by KoreanAbikeCafe.

How to fasten up the bolt of SeatClamp


That is brilliant!
Thanks for the tip with detailed photos. :D


PostPosted: Sun May 27, 2007 11:30 pm
by newcross
(article also posted to )

"Ball ended hex (allen) key"

This allows us to turn the anoying screw from angle position, so that we no longer need to remove the other screw!!!


When you use this tool to adjust the seatpost clamp, please note the following points.

1. Use 3mm hex key.
2. You turn the screw by 'swinging the hex key', and not by 'rotating hex key's axis'
3. Adjust the screw with the quick release lever 'loosen (opened)'.

The price and the quality of this tool varies, so make your choice as you please. For example, Halfords offers Bikehut 'Ball ended hex key set' for £9.99 ... yId=31290'.
and also similar ball-ended hex key set in their superior proffessional range (car-tool section) and it costs £19.99. Then somewhere like sells ball-ended 7-Piece Allen Key Set for just £2.99!! :wink: ... X&doy=27m5

The anoying thing is, they always sold as 'set'... :?

PostPosted: Tue May 29, 2007 3:10 pm
by Binch Shin
Very useful tips, newcross :wink:
Thank you ^(^