Has anyone done a weenie job on a cheapo carbon saddle?

Discuss light weight issues concerning road bikes & parts.
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BobSantini
Posts: 292
Joined: Sun Jul 10, 2011 9:03 am

by BobSantini

I was looking at the carbon saddles on Alibaba. People say they are hard.
It occurred to me that if you perforated the shell with lots of holes where your sit bones go that would make the shell more flexible as well as lighter.
I have no idea how much perforation would be good or even how much flex is too much. I guess it's a suck it and see sort of deal and I'm tempted to try it.
Any advice from experienced seat drillers is welcome.
r o y g b i v

by Weenie


1415chris
Posts: 1045
Joined: Sat Apr 18, 2009 8:59 am
Location: Surrey UK

by 1415chris

Winter, perfect time for testing.
Just don't forget to buy more than one saddle, in the case your drill too many wholes :wink:

1spd
Posts: 175
Joined: Fri Jun 15, 2012 2:27 pm
Location: Gaithersburg, Maryland

by 1spd

Years ago, I drilled out an original Flight saddle. That saddle shell is more plastic and was more flexible. I would be very reluctant to drill out a solid carbon saddle for fear of it simply cracking. Having said that, I just cut the rails out of my "cheap" carbon saddle (a Merek). The saddle is frickn solid and hard yes! It didn't fled very much at all but yes there is some flex. For me the Merek saddle shape just didn't work for me so I hacked the rails out of it and bonded them to an SLR shell that had been stripped. The shape fits me like a glove but will add that it too is pretty damn solid! Very little flex and I can't say that I really feel any flex when I am riding.
Cannondale Synapse (alu)...it works

echtogammut
Posts: 42
Joined: Tue Feb 01, 2011 6:53 pm

by echtogammut

I could be wrong, but I don't think drilling holes in a hard carbon fiber saddle will make it flex more, but it will make it more prone to stress fractures. Carbon fiber is a resin impregnated fabric, so its movement and strength is dictated by its weft direction, resin compound and layers.

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btompkins0112
Posts: 2693
Joined: Fri Feb 11, 2011 3:04 am
Location: Mississippi

by btompkins0112

echtogammut wrote:I could be wrong, but I don't think drilling holes in a hard carbon fiber saddle will make it flex more


You are not incorrect.

hillrider
Posts: 67
Joined: Wed Oct 13, 2010 7:20 pm
Location: Ireland

by hillrider

I did this to my carbon SLR
viewtopic.php?f=3&t=110279

No holes,just weight loss!!

weeracerweenie
Posts: 454
Joined: Mon Aug 15, 2011 4:48 am

by weeracerweenie

I rode one and there was little to nil flex in the thing... pretty bumpy. I would suggest drilling in the centre where the nerves and boy bits are to relieve pressure on your body, also the crowne of the saddle is the most likely the rigid point. Id be amazed if it cracked. A slot down the middle would be my suggestion...

Or do what i did and get a second hand SLR strip the foam and leather (30 grams). Total weight 100grams. Easy
I guess there's worse hobbies than making a bike light? Right?

by Weenie


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