HOT: Active* forum members generally gain 5% discount at starbike.com store!
Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Articles FAQ Contact About




Post new topic Reply to topic  [ 59 posts ] 
Go to page 1, 2, 3, 4  Next
Author Message
PostPosted: Thu Oct 19, 2006 3:21 pm 
Offline
User avatar

Joined: Fri Jul 23, 2004 8:24 pm
Posts: 1513
Location: Houston, Texas
I have a question for those of you acrosss the Atlantic concerning the saddle mount on the Giant TCR Advanced LE ISP. I currently ride a 05' TCR Advanced (Silverdream - size large) and use FSA's K-Force Seatpost with 2.5cm setback with 172.5 cranks and am concered that if I switch to the ISP framset, that additional 2.5cm setback will be lost.

Image

Above is the first closeup image I came up with while searching the web and am curious if the saddle mount atop offers more than one mounting point for the seat attachment like on the 05-06' TCR TT and TCR Trinity sear posts?

_________________
Michael - The Anaerobic Threshold is neither...


Top
 Profile  
 
Posted: Thu Oct 19, 2006 3:21 pm 


Top
  
 
 Post subject:
PostPosted: Thu Oct 19, 2006 3:25 pm 
Offline
User avatar

Joined: Wed May 18, 2005 6:24 pm
Posts: 4387
Location: BELGIUM
Hi,

I have a TCR Advanced ISP 2006.
The saddle mount has 3 holes but only 1 - the middle one - has a threading for the bolt.

I measured the distance center of clamp to center of seattube, it's 1.5cm


Top
 Profile  
 
 Post subject:
PostPosted: Thu Oct 19, 2006 3:29 pm 
Offline
User avatar

Joined: Fri Jul 23, 2004 8:24 pm
Posts: 1513
Location: Houston, Texas
Thanks for the quick response and the measurement for the mounting offset. Interesting that there are 3 mounting holes but only is threaded - I wonder if that will hold true for the framesets that are imported into the US? Should have paid more attention while I was at Interbike last month - I held the frameset in my hands a number of times but did not think about this issue until this week as I am about to order our framesets.

_________________
Michael - The Anaerobic Threshold is neither...


Top
 Profile  
 
 Post subject:
PostPosted: Thu Oct 19, 2006 3:37 pm 
Offline
User avatar

Joined: Wed May 18, 2005 6:24 pm
Posts: 4387
Location: BELGIUM
This is a picture of the inside of the clamp.
The first hole (on the right in the pic) is useless as it's part of the clamping space. The 3rd hole on the left has no threading, only the middle has, no idea why though!


Attachments:
DSC06213.JPG
DSC06213.JPG [ 110.13 KiB | Viewed 959 times ]
Top
 Profile  
 
 Post subject:
PostPosted: Thu Oct 19, 2006 3:44 pm 
Offline
User avatar

Joined: Sun Jan 08, 2006 5:02 pm
Posts: 368
Location: Belgium
strobbekoen wrote:
This is a picture of the inside of the clamp.
The first hole (on the right in the pic) is useless as it's part of the clamping space. The 3rd hole on the left has no threading, only the middle has, no idea why though!

to save some weight? :lol:


Top
 Profile  
 
 Post subject:
PostPosted: Thu Oct 19, 2006 3:57 pm 
Offline
User avatar

Joined: Wed May 18, 2005 6:24 pm
Posts: 4387
Location: BELGIUM
Giantlover wrote:
strobbekoen wrote:
This is a picture of the inside of the clamp.
The first hole (on the right in the pic) is useless as it's part of the clamping space. The 3rd hole on the left has no threading, only the middle has, no idea why though!

to save some weight? :lol:


Maybe, too bad it still weighs 112g :wink:


Top
 Profile  
 
 Post subject:
PostPosted: Thu Oct 19, 2006 4:04 pm 
Offline

Joined: Sun Oct 16, 2005 8:46 pm
Posts: 961
Location: Swansea, Wales, United Kingdom
strobbekoen wrote:
Giantlover wrote:
strobbekoen wrote:
This is a picture of the inside of the clamp.
The first hole (on the right in the pic) is useless as it's part of the clamping space. The 3rd hole on the left has no threading, only the middle has, no idea why though!

to save some weight? :lol:


Maybe, too bad it still weighs 112g :wink:


I also have an ISP and mine is the same. Does anyone know if any manufacturers make a lighter replacement?


Top
 Profile  
 
 Post subject:
PostPosted: Thu Oct 19, 2006 4:09 pm 
Offline
User avatar

Joined: Wed May 18, 2005 6:24 pm
Posts: 4387
Location: BELGIUM
Giant's been using it for years now. I assume with good reason :)
The forces on the clamp can be quite high i think.
If we consider a standard carbon seatpost of 200g, i bet the clamp also weighs around the 100g figure.


Top
 Profile  
 
 Post subject:
PostPosted: Thu Oct 19, 2006 7:01 pm 
Offline
User avatar

Joined: Fri Jul 23, 2004 8:24 pm
Posts: 1513
Location: Houston, Texas
strobbekoen wrote:
This is a picture of the inside of the clamp.
The first hole (on the right in the pic) is useless as it's part of the clamping space. The 3rd hole on the left has no threading, only the middle has, no idea why though!


Now that I see that image it makes sense why the 3rd hole has no threading. Obviously the attachment/clamp design places a lot of compression force on the top of the seat mast but unlike a seat post in a seat tube, there is nothing to prevent the seat mast tube from deforming under load. If Giant threaded the 3rd mounting hole, a heavier rider using a longer saddle (Fizik Arione) while on a prolonged climb would move all the way back on the saddle and the leverage of that position would be placing an uneven distribution of force on the mast. Seems to me that if the torsional load causes the mast tube to briefly deform slightly, the intregrity of the force the clamp exerts on the mast might be compromised (especially if the rider is using the full-body climb technique :D).

_________________
Michael - The Anaerobic Threshold is neither...


Top
 Profile  
 
 Post subject:
PostPosted: Thu Oct 19, 2006 7:07 pm 
Offline
User avatar

Joined: Wed May 18, 2005 6:24 pm
Posts: 4387
Location: BELGIUM
Yes that makes sense. So i guess they drilled the hole to shave a few idle grams.. I am not worried about it's weight much though.


Top
 Profile  
 
 Post subject:
PostPosted: Fri Oct 20, 2006 2:18 pm 
Offline

Joined: Mon Jul 26, 2004 8:57 pm
Posts: 759
Location: Ireland
You could try using a saddle with longer rails like an SLR(if you not already using one).There can be a vast difference in the amount of set back you can have even on saddles from the same manufacture(check flite v SLR).Hope this helps.


Top
 Profile  
 
 Post subject:
PostPosted: Fri Oct 20, 2006 3:57 pm 
Offline
User avatar

Joined: Fri Jul 23, 2004 8:24 pm
Posts: 1513
Location: Houston, Texas
strobbekoen wrote:
This is a picture of the inside of the clamp


Just curious, could you provide me with the lengthwise dimension of that clamp form your bike - ie with a saddle mounted in the clamp, what is the length from the bottom edge of the clamp to bottom edge of the saddle's mounting rail?


Regards,

_________________
Michael - The Anaerobic Threshold is neither...


Top
 Profile  
 
 Post subject:
PostPosted: Fri Oct 20, 2006 5:14 pm 
Offline
User avatar

Joined: Wed May 18, 2005 6:24 pm
Posts: 4387
Location: BELGIUM
Is it this what you mean ? I was not sure what you meant with 'bottom of clamp'. The distance of bottom of rail to bottom of clamp as pictured is 5.1cm.


Attachments:
DSC06220.JPG
DSC06220.JPG [ 95.02 KiB | Viewed 917 times ]
Top
 Profile  
 
 Post subject:
PostPosted: Fri Oct 20, 2006 6:18 pm 
Offline
User avatar

Joined: Fri Jul 23, 2004 8:24 pm
Posts: 1513
Location: Houston, Texas
Yes - that is perfect. Thanks.

_________________
Michael - The Anaerobic Threshold is neither...


Top
 Profile  
 
 Post subject:
Posted: Fri Oct 20, 2006 6:18 pm 


Top
  
 
 Post subject:
PostPosted: Fri Oct 20, 2006 8:04 pm 
Offline

Joined: Thu Mar 31, 2005 10:56 pm
Posts: 74
just wondering if anyone can fill me in as the maximum length of the mast for a size med? I run my saddle around 80cm's which is quite long for a medium, but i'm lots of leg and not much back, plus i like the short short head tube for maximum drop. The webber says that the length is pretty short, and i fear too short.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 59 posts ] 
Go to page 1, 2, 3, 4  Next


Who is online

Users browsing this forum: Bing [Bot], Exabot [Bot], FIJIGabe, FredBloggs, jpanspac, rmerka and 63 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. 08 Giant TCR Advanced Team ISP - Mount traditional seatpost?

in Road

locktopus

7

647

Fri Apr 11, 2014 10:04 am

latman View the latest post

There are no new unread posts for this topic. Garmin mount for new Giant Contact SLR one piece stem/bar

[ Go to page: 1, 2, 3 ]

in Road

Horacio

32

5243

Wed Jun 25, 2014 10:49 am

anatoli View the latest post

There are no new unread posts for this topic. Campy EPS Interface - mount

in Road

bangkok

5

398

Mon Mar 17, 2014 9:10 pm

CP View the latest post

There are no new unread posts for this topic. Attachment(s) SRM mount - Where to get bearing piece?

in Road

shinkansen

3

199

Tue Jul 01, 2014 7:54 pm

shinkansen View the latest post

There are no new unread posts for this topic. Wall mount for two bikes?

in Road

USPS

4

588

Mon Nov 25, 2013 11:42 am

BikeTart View the latest post


It is currently Thu Jul 24, 2014 7:43 pm

All times are UTC + 1 hour




Advertising   –  FAQ   –  Contact   –  Convert   –  About

© Weight Weenies 2000-2013
hosted by starbike.com


How to get rid of these ads? Just register!


Powered by phpBB