Show me Your Tuning!

Discuss light weight issues concerning road bikes & parts.
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monchito
Posts: 49
Joined: Mon Apr 16, 2012 7:46 pm
Location: Barcelona

by monchito

:shock: :shock: :shock: :shock: :shock: :shock:
Tuning a chain... :unbelievable: I need mi medicine. nuuuuuurse¡¡¡

Greeeat :beerchug:

by Weenie


weeracerweenie
Posts: 451
Joined: Mon Aug 15, 2011 4:48 am

by weeracerweenie

+1 monchito! Ridiculously cool!
I guess there's worse hobbies than making a bike light? Right?

artray
Posts: 1365
Joined: Fri Oct 07, 2011 2:08 pm

by artray

Im enjoying the Wally and Weenie show very much . :thumbup:
We need some pics of Wallys Bike . :beerchug:

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

by 1spd

Hmmmm, I have a chepie Merek full carbon saddle but don't particularly care for the shape. On the other hand, I have a SLR XP saddle that has Vanox rails and basically double padding. I am wondering if I can somehow trim out the carbon rails from both saddles and then put the carbon rails onto the SLR after stripping it down of all the padding.

Well, I pretty much know it can be done but don't know what I need to use to reiforce the rails or what epoxy to use. Basically, I'm not sure how to go about it once I get the rails separated. I do know that the rear angle mounting points on the two rails is different so they couldn't just plug back in if you will.
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wally318
Posts: 475
Joined: Fri Feb 21, 2003 1:00 am

by wally318

I'll try to get some updated pics in the next day or 2 with a link to an album for
some more HD pics. Problem is that at my place at this time of year not so great
lighting for pics and not enough room for good background.
Any suggestions?
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artray
Posts: 1365
Joined: Fri Oct 07, 2011 2:08 pm

by artray

Wally , it would be cool just to see your bike even if the photos are not perfect .
Enjoying the thread and some great tuning going on :thumbup:

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

by 1spd

Just made a how-to thread for this but here it is anyway. Not the most beautiful and it still needs some clean up work. But it started out at 186g and now weighs 113g.

rsz_dsc_0908.jpg


rsz_dsc_0915.jpg


rsz_dsc_0922.jpg


Thanks to some pointers and direction from fellow board members
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wally318
Posts: 475
Joined: Fri Feb 21, 2003 1:00 am

by wally318

Hi 1 spd. What is holding the rails at the front? Hard to tell from the pic.
Is it some sort of socket, like at the rear but double wide for the wishbone?
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prendrefeu
Posts: 8579
Joined: Wed Oct 31, 2007 10:32 pm
Location: Los Feliz, Los Angeles, California
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by prendrefeu

Hmmmm.... I'm wondering if a similar rail-mod can be done to my old Specialized Toupe (Ti rail) saddles.
Exp001 || Other projects in the works.

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

by 1spd

Wally318: Yes, the saddle shell has three little pockets if you will. The front one is larger just as you noted. Here is a closer picture of it.

rsz_dsc_0916.jpg
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wally318
Posts: 475
Joined: Fri Feb 21, 2003 1:00 am

by wally318

1spd looks like it should work quite well. Did it take some prodding to get the rails into their sockets?
Keep us updated as to road testing.
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1spd
Posts: 175
Joined: Fri Jun 15, 2012 2:27 pm
Location: Gaithersburg, Maryland

by 1spd

I basically just used the black cutting wheel on my dremil and used it as a sander if you will. I simply tried to get it in, if it didn't fit then I marked it with a sharpie and sanded some more or did some trimming and tried again. Just takes time and patients.

Did a little more work on it this evening. Basically I worked on cleaning up some of the scratches and stuff. I started with 600 grit sand paper and worked my way up thru 1000, 1500, and ended at 2000. Once done, I broke out the rubbing compound from the car cleaning bin. That really smoothed out all the little sanding marks but at the same time it got into some of the larger smoothed out scratches. I then went at it with a tooth brush and got most of it out. I figure the rest of it will simply wear off after some riding time.

I did mount it up today and took a spin around the neighborhood trying to hit bumps and so far so good. Will try to get out on a ride tomorrow at some point. Might take my other seat with me just in case.
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wally318
Posts: 475
Joined: Fri Feb 21, 2003 1:00 am

by wally318

So what does the seat weigh now?
What did the carbon rails weigh, did you weigh them alone before mounting?
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1spd
Posts: 175
Joined: Fri Jun 15, 2012 2:27 pm
Location: Gaithersburg, Maryland

by 1spd

the clean up and sanding didn't take off any weight. I really didn't go at it too hard around the epoxy as I want to leave as much of it on there until I can determine if this thing is going to hold up or not. Seriously though, I don't think I will drop much more off of it.

I did not actually weigh the rails (guess I was too wrapped up in getting it done-my lack of patients took over). I can say that the saddle stripped with the Vanox rails weighed in at 146g and now with the carbon rails it weighs 113g. So if you include the epoxy the math works out to be about 30g and I would guess that at the most there is 5g of epoxy. I'm sure there are lighter rails out there on different saddles especially since they came off a cheaper saddle.

Rode about 20 miles today over what I would consider some rougher roads and it held up fine. I did take my Aspide with me in my jersey pocket just incase something went wrong.
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weeracerweenie
Posts: 451
Joined: Mon Aug 15, 2011 4:48 am

by weeracerweenie

@1spd, NICELY DONE! I like how easy it was to swap, my SLR (carbon railled tuned was 106grams but im looking to frther tune the hole in the middle as i dont think its wide enough...

@Wally318 seriously, we need a poicture im dying here!!

A few projects on the go at the moment. An update to my PlaySpeed tune, a ISP Setback clamp for less the 20grams and some <1 gram rainbow barrel adjuster for my good friend Anton Cooper, Junior World MTB Champ, + some german colours for the German National Junior XC champ Martin Frey. Anyone know where to get coloured Delrin / Acetal? Details to come! :beerchug:
I guess there's worse hobbies than making a bike light? Right?

by Weenie


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