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PostPosted: Sat Apr 07, 2012 2:37 pm 
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Joined: Sat Jan 03, 2009 9:43 pm
Posts: 2917
Location: Canada
ATTENTION WWs! I need suggestion for weight reduction!

While waiting for my handbuilt wheels to be done, I am looking at some ways to shave a bit of weight without excessive cost. I dont want to change the ENVE part, here is what I have in mind, feel free to add any suggestion.

My ideas:

XX trigger to SEC grip shifters
cut my ENVE seatpost? (really not sure about this one, about 6cm available to cut)
Tune DC15 front QR and Tune rear QR
Take off the starnut and use Extralite ultrastar 2 instead. (possible? How do I remove the starnut?)
Lighter shift housing (wich one?)
tune my pedals with titanium spindle?
if changing to grip shifters, lighter grips such as extralite or KCNC

build list with known weights:

frame: rocky mountain vertex sanded and repainted: 1308g
fork: fox 32 rlc fit: 1440
handlebars: ENVE sweep cut to 660mm: 163g
stem: KCNC sc wing 100mm: 100g
seatpost: ENVE setback 30.9x400mm: 199g
saddle: ebay carbon: 103g
chain: KMC x10sl: 233g
rear der: sram XX: 181g
Front der: sram X.0 ?g
crankset: sram XX 175mm 29/42: ?g
pedals: egg beater 2: ?g
shifters: sram XX trigger: ?g
Brakes: sram XX: ?g
cassette: sram pg-1060 11-36: heavy ?g
tires: maxxis Ikon EXO: 538g each
wheels: dt swiss x1600: ?g
grips: ESI racers edge: 46g
rotors: sram XX: ?g

handbuilt wheels will be arround 1350g, mxxis Ikon non exo, tubeless, KCNC rotors, XX cassette.

Already have alloy bolt for bottle cages, top cap. Titanium bolts for rotors.

thanks for any suggestions


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Posted: Sat Apr 07, 2012 2:37 pm 


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PostPosted: Sat Apr 07, 2012 3:13 pm 
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Formerly known as Motaro
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Joined: Fri Mar 09, 2007 12:17 am
Posts: 257
Location: holland
why not Extralite Ultra Pulleys 10T 9gr in Sram XX rear der i us it to and works super and my der coms now on 167gr normal 181gr and my pulleys are now 2 years old and stil work super

shift housing i us are Shimano SIS SP41 + PowerCordz 1.2mm us them now for some years and i love it

how to take out starnut is easy if under side of Fox is open get Long wood pole who will fit in steer tube then get hammer and hit top of wood pole til starnut comes out on underside of steer tube

_________________
cannondale Rush carbon SL team 8.75kg/19.29 1x10
viewtopic.php?f=10&t=101405
old WW bikes
Epic carbon 2006 9.3kg
Spark 10 2008 8.2Kg
Anthem Adv 9kg ( solt after 3 weeks not done )
scalpel 2009 7.97kg


Last edited by Robin v Berkel on Mon Apr 09, 2012 4:18 pm, edited 1 time in total.

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PostPosted: Mon Apr 09, 2012 3:01 pm 
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Joined: Sat Jan 03, 2009 9:43 pm
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Location: Canada
thx!

will look into the extralite pulleys

Anyone thinks the egg beater Ti axle would be a good weight redux option?

Not sure I will ditch the xx trigger for cheap grip shifters.


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PostPosted: Mon Apr 09, 2012 3:53 pm 
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Joined: Wed Mar 19, 2008 6:54 pm
Posts: 354
The actual eggbeater weights are pretty much spot on with manufacturers claimed weight. I would not use the Ti for everyday use. I did and they only lasted a couple of months. So I got a new pair I use them for races and train on the eb3s.

You could go 1x10.

Once the head set is adjusted you can run it with out the top cap and starnut. I would leave the starnut.

Get bontrager foam grips. I just put them on my ht and they are pretty nice. They weighed something like 12grams!!!

Also get an xx cassette. It is my favorite part of the whole xx group. They last along time and they do not weigh much.


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PostPosted: Mon Apr 09, 2012 4:00 pm 
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Joined: Sat Jan 03, 2009 9:43 pm
Posts: 2917
Location: Canada
thanks fat tire

already have an XX cassette, wich will go on the handbuilt wheels.

I would LOVE to go grip shift but the new grip shifters are not light and I cant find a reliable third party solution.

maybe I'd get the new grip shifters anyways. Would I be stucked with using the pricey XX or could I used the new X.0 grip shifters with my XX drivetrain?


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PostPosted: Tue May 01, 2012 1:58 am 
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Location: Netherlands
Very nice build, I'd like to see it finished.

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PostPosted: Sun Jun 24, 2012 4:10 pm 
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Joined: Sat Jan 03, 2009 9:43 pm
Posts: 2917
Location: Canada
UPDATE

here is the final version of my custom Rocky Mountain Vertex RSL.

The bike rides so well, its light but there are no compromise, nothing too fancy and I think the overall build is reliable and strong, raceworthy for sure.

With racing wheelset, it weights 8,98 kg (19,8 lbs), with everything on it, i-e: 2 bottle cages, garmin mount, garmin 500 and even the quarq powermeter!

here is the final build list

frame: rocky mountain vertex sanded and repainted. medium
fork: fox 32 rlc fit
handlebars: ENVE sweep cut to 660mm
stem: KCNC sc wing 100mm
seatpost: ENVE setback 30.9x400mm
saddle: ebay carbon
chain: KMC x10sl
rear der: sram XX
Front der: sram X.0
crankset: SRAM QUARQ 175mm, 28/42 rings
pedals: egg beater 2
shifters: sram XX trigger
Brakes: sram XX
cassette: sram XX 11-36
tires: maxxis Ikon EXO 2.2
grips: ESI racers edge
rotors: KCNC razor 160/140
wheels: stans ZTR alpine rims, dt revolution spokes, alloy nipples, c-4 hubs (setup tubeless with specialized tape, valve and 2,5 scoop of stans latex)
skewer: fox 1/5mm front, KCNC rear
computer: garmin edge 500
bottle cages: ebay carbon with alloy bolts
expander: starnut with alloy top cap and bolt
BB: sram GXP

some pictures

Image
vertex final scale shot 8,98kg par devincification, sur Flickr

Image
vertex final scale shot par devincification, sur Flickr

Image
vertex final 3 par devincification, sur Flickr

Image
vertex final 2 par devincification, sur Flickr

Image
vertex final 1 par devincification, sur Flickr

and a small action shot picture from national championships/provincial cup week-end held a week ago.

Image
st-fé véloparc 1 par devincification, sur Flickr


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PostPosted: Wed Jul 18, 2012 10:11 pm 
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Joined: Sat Jan 03, 2009 9:43 pm
Posts: 2917
Location: Canada
small updates.

new tires for my everyday wheels. Maxxis Aspen 2.1. They weight 480 and 483g so I will drop 111g over my maxxis Ikon exo. Only downside is the Aspen has more fragile sidewalls.

The Ikons are still good but I had 2 flats in 2 weeks and the tire is starting to show some cracks. It has rougly 3000km

I also needed to change my rear derailleur puller. I installed some KCNC 11T ones, IIRC they are 7g lighter then the stock XX ones.

Now I need to sort out my front wheel bearing issue. Cant ride the wheel without trashing the bearings. I need to fine tune the preload.

pictures:

Image
maxxis aspen 2.1 - 483g par devincification, sur Flickr

Image
maxxis aspen 2.1 - 480g par devincification, sur Flickr

Image
KCNC 11T pulley par devincification, sur Flickr


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