Brompton slipping seatpost
04-08-11, 10:17 AM
#26
New usename ThorUSA
Join Date: Nov 2004
Location: Southern Illinois USA
Posts: 2,469
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Thats a Dahon designed for Carbon bit ...lol
but sure looks good on a Brommy as well
those Sapim CXRay spokes in there ?
thor
but sure looks good on a Brommy as well
those Sapim CXRay spokes in there ?
thor
04-08-11, 12:40 PM
#29
Senior Member
Thread Starter
Join Date: Jun 2002
Location: GTA, Canada
Posts: 313
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
BTW, that Brompton with the Carbon SP is from this set:
https://www.flickr.com/photos/door2summer69/4180293695/
The owner replaced the plastic shim with a metal shim that chagzuki linked to on the previous page. The owner does not say where he got this metal shim from though.
https://www.flickr.com/photos/door2summer69/4180293695/
The owner replaced the plastic shim with a metal shim that chagzuki linked to on the previous page. The owner does not say where he got this metal shim from though.
04-08-11, 01:54 PM
#30
Senior Member
Join Date: Jan 2008
Location: Cheshire, North West England, UK
Posts: 575
Bikes: Brompton S2L-X, Bridgestone Moulton, 1963 & 1966 Moultons, Scott Mountain bike
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 10 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
And if I recall correctly the seat post doesn't have Dahon written on it so I was being a little silly earlier on 
Still prefer my Brooks / titanium seat post set up though....
04-08-11, 04:04 PM
#31
Banned
1st I tried gel CA [super] glue on new bushing, didn't work , didn't stay put.
wouldn't suggest leave the bushing as a dry fit..
so I went to hot melt glue then played the heat gun on the frame
until the seat post fit.
the 2nd seatpost QR , just around the seatpost itself 31.8, works great.
all you have to do is take the lip off the top edge of the frame clamp band
and then flip it over. it sits on top of the frame edge and the bushing.
wouldn't suggest leave the bushing as a dry fit..
so I went to hot melt glue then played the heat gun on the frame
until the seat post fit.
the 2nd seatpost QR , just around the seatpost itself 31.8, works great.
all you have to do is take the lip off the top edge of the frame clamp band
and then flip it over. it sits on top of the frame edge and the bushing.
Last edited by fietsbob; 09-27-11 at 11:40 AM.
04-08-11, 05:36 PM
#32
Senior Member
Thread Starter
Join Date: Jun 2002
Location: GTA, Canada
Posts: 313
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I finally found a simple solution. I sanded the seatpost area where the clamp wraps around it, tightened the clamp bolt a little and that seems to fix the problem. Went out and did a 3km loop purposely hitting a couple of bumps on the road and observed no slippage. Now I can focus on converting the M-bar to an S-bar.
09-27-11, 08:22 AM
#33
Newbie
Join Date: Sep 2011
Location: Barcelona
Posts: 2
Bikes: Moser AX Leader, Mongoose Maurice, Brompton
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Hi! I've been having the same problem with my Brompton. I have the old style seat clamp:
Now I solve the slippage problem turning 1/3 of a turn the nut every time (and yes, always carrying a 13mm key). Now my question, does anybody know if the new style seat clamp has more travel?
Thanx for any answer!
Now I solve the slippage problem turning 1/3 of a turn the nut every time (and yes, always carrying a 13mm key). Now my question, does anybody know if the new style seat clamp has more travel?
Thanx for any answer!
09-27-11, 10:46 AM
#34
Senior Member
Join Date: Dec 2008
Posts: 1,821
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
I finally found a simple solution. I sanded the seatpost area where the clamp wraps around it, tightened the clamp bolt a little and that seems to fix the problem. Went out and did a 3km loop purposely hitting a couple of bumps on the road and observed no slippage. Now I can focus on converting the M-bar to an S-bar.
https://www.finishlineusa.com/products/fiber_grip.htm
Thread
Thread Starter
Forum
Replies
Last Post
JimOfOakCreek
Bicycle Mechanics
7
05-25-10 06:24 PM
