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PostPosted: Mon Dec 30, 2013 11:52 pm 
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Joined: Sun Jun 16, 2013 9:52 pm
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Location: Jersey, British Channel Islands
So in a moment of madness with the credit card, I bought one of the new Engage Fluke saddles because I thought I could easily get an adaptor from Kuota. It's a braided carbon saddle and I need to fit it to an aero seatpost with a side clamping arrangement. It turns out that even though its a new model of frame, there is no provision for braided saddles. The obvious solution is to sell it and buy a (probably heavier) standard saddle but I think there must be a way.

Before I attack the clamp with a Dremel I thought I better get some advice. If I can file the grooves in the clamp to be 9mm high but retain the same depth would it clamp safely or would this place an uneven force on the carbon? I'm only 54kg but ride fairly rough roads. Does it need to be done properly in a machine shop? I have managed to get a spare set of the silver outer clamps but they seemed reluctant to give me a spare of the inner wedge type clamps, although the LBS assured me that if I balls it up they can get replacements somehow. The seatpost is topped with just a hole approx 30mm in diameter and each side has a aluminium cone that is held in by a single bolt. These cone wedges have a groove corresponding to the opposite clamp to hold the rail, these would be very straightforward to modify as its just a lump of alu, the silver pieces are a more complicated casting and the metal could end up fairly thin with the groove widened. Pictures below:

Image

Image

Any tips? Lost cause? Is there an alternative solution like an aftermarket adaptor?


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PostPosted: Tue Dec 31, 2013 1:38 pm 
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Joined: Thu Jul 06, 2006 5:53 pm
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Location: Expat in Washington DC
contact Kuota?

I don't understand why anyone that makes a seatpost doesn't factor in carbon/larger rails these days. Some manufacturers provide additional clamps whilst others charge for them(i call it the carbon tax).

Enve sell a clamp only i believe that looks similar but I bet won't work with your mast.....

Think you maybe SOL.....


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PostPosted: Tue Dec 31, 2013 1:42 pm 
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Perhaps you could file the inner part (that protrudes the mast) and find other outer parts such as Ritchey or Enve which have a very similar design. If you could dismantle and photograph the parts individually, maybe with some measurements, you could get a more qualified guess if that might work.

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PostPosted: Tue Dec 31, 2013 6:41 pm 
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Location: Jersey, British Channel Islands
Took a picture of the parts with some annotations:

Image

The hole in the post is difficult to measure because it is chamfered on the outer edges to a minimum of 27mm ID. The widest point (as seen from back of bike) is 30mm.

Image


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PostPosted: Wed Jan 01, 2014 5:40 am 
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I was going to suggest trying a Bontrager clamp kit but they don't quite look the same. Maybe someone here could measure theirs to check though?


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PostPosted: Wed Jan 01, 2014 1:56 pm 
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Location: Jersey, British Channel Islands
It does look like the design could be similar: http://bontrager.com/model/09194 But I would have to buy one to find out.

Im going to try contacting Kuota again, this time over the phone as I never had a response to my emails. The LBS told me they don't do an adaptor but I will ask if an entire mast from a different bike might fit or if they could suggest any modifications. I do find it ridiculous that a brand new mid-range frameset doesn't offer a carbon saddle option.


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PostPosted: Wed Jan 01, 2014 5:03 pm 
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The oval shaped holes in the black wedge pieces suggest there is some vertical movement possible


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PostPosted: Fri Jan 03, 2014 11:43 am 
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Location: Jersey, British Channel Islands
lannes wrote:
The oval shaped holes in the black wedge pieces suggest there is some vertical movement possible


I didnt notice any, but the grooves are deep enough to prevent carbon rails being used anyway, even if the clamps would shift about a bit.


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PostPosted: Fri Jan 03, 2014 12:05 pm 
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I highly doubt they would suggest modification options. That would be a liability risk for them.


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PostPosted: Sat Jan 04, 2014 8:10 pm 
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Joined: Sun Jun 16, 2013 9:52 pm
Posts: 44
Location: Jersey, British Channel Islands
I just found this: http://www.specialized.com/us/en/ftb/ro ... clamp-79mm

It looks remarkably similar. Is there anyone with a Venge or Shiv that could compare their clamp to the measurements in the pic posted earlier?


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PostPosted: Mon Mar 17, 2014 8:20 pm 
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Joined: Sun Jun 16, 2013 9:52 pm
Posts: 44
Location: Jersey, British Channel Islands
Sorry for the gravedigging but I have an update. After weeks of trying to get measurements I gambled the £25 on a Spesh clamp and it arrived today after a long wait.

Stunningly enough, it fits! So I can now use my Engage Fluke PC on the Kuota.

Image

Compulsory scale shot:
Image

Nice 80g saving. The spesh clamp is a bit lighter too but haven't got round to weighing it yet.


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PostPosted: Mon Mar 17, 2014 10:26 pm 
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Posts: 121
What is that saddle? It looks like a Toupe just made by different brand.


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PostPosted: Tue Mar 18, 2014 1:02 am 
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asdf123 wrote:
What is that saddle? It looks like a Toupe just made by different brand.


Engage is the AX lightness "home" brand


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PostPosted: Tue Mar 18, 2014 6:23 pm 
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Location: Jersey, British Channel Islands
It's basically ax lightness but a bit cheaper. I'm guessing it's made in Asia rather than Germany?


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PostPosted: Tue Mar 18, 2014 6:50 pm 
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Joined: Sun Jan 26, 2014 3:48 pm
Posts: 23
Very nice !
Ive just fitted a Selle san marco Superleggera to my spesh seatpost on the venge & it didnt quite like the spacing. Managed to get there in the end without breaking the rails.


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