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PostPosted: Tue May 03, 2016 11:08 pm 
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in the industry

Joined: Sat May 12, 2012 7:25 pm
Posts: 2682
Location: Glermsford, Suffolk U.K
This is a budget project. I will start posting kit with photo's and weights tomorrow. I think getting below 6kg will be hard. I have two starting framesets though. The second arrives tomorrow i will go with the lightest.

Both frames though have cost me less than £100 one of ebay (steel 60cm frame weighing 1648g) one is a swap, i am building the guy a pair of wheels in exchange for his look kg221. I am using parts i bought a while back.

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Last edited by bm0p700f on Wed May 04, 2016 8:44 am, edited 1 time in total.

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 Post subject: Re: Project sub 6kg
PostPosted: Wed May 04, 2016 8:42 am 
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in the industry

Joined: Sat May 12, 2012 7:25 pm
Posts: 2682
Location: Glermsford, Suffolk U.K
crap pictures for now better ones when the bike gets built up.

front wheel Hope Ti glide hub 18H CX-ray spokes 38mm tubular rim Schwable (Veloflex) ultremo tyre
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weight 779g
Modolo D/T shifters
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Token ti skewers
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Rear wheel Hope Ti glide hub 24H CX-ray spokes 38mm tubular rim Schwable (Veloflex) ultremo tyre 991g
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Record 1" threadless headset
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Record 10 speed carbon chainset with fibrelyte rings 505g
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Hylix saddle
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Mavic 860 rear mech
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Record brake levers
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Record BB
Image


Royce Ti crank bolts and a Ti cassette lockring are on there way to me (hope hubs use the old campag lockring standard so a Royce lockring is the lightest I can buy). Weight could be saved with a Campagnolo comp ultra chainset I have but that would look wrong on this. trying to do a retro weenie build on a budget!

Oh the steel frame 1648g. Needs paint though thinking metallic purple or wait metallic orange.
Image
The spacing though is 126mm. The wheel does not sit properly so it needs to be respaced properly.

The Look KG221 might be lighter
I have 150g of cables earmarked (ashima reaction outers and powercordz inners) 50g for bar tape 85g for a front mech.
I might get a extralite stem and the bars will be cinelli Neos. A woodman carbo EL seatpost will be used.

There is weight to be saved by making carbon cages for the rear mech and getting some carbon pulleys.

Weight currently projected to be 6208g so lets say 250g to be saved. Easyish if I spend not so easy if I don't. Ideas welcome.

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 Post subject: Re: Project sub 6kg
Posted: Wed May 04, 2016 8:42 am 


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PostPosted: Wed May 04, 2016 9:05 am 
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Joined: Wed Oct 06, 2004 6:55 pm
Posts: 2364
Location: Vienna, AUT
Cool project. At 6.2 kg you are already in a great weight zone for a bike based on an older steel frameset.

If the frame is fully chromed under the paint, then consider removing the paint and just leaving the chrome.
Paint can be surprisingly heavy.

But in all honesty, the bike is darn light as it stands now, so some aesthetic color is warranted.

There might be a lighter option out there for HS and BB, but those components would no doubt be exponentially more expensive. Some bolt tuning on the derailleurs, cage bolts, cable stops, etc. might shed a few grams

Post a better pic of that RD when you can.


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PostPosted: Wed May 04, 2016 9:27 am 
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in the industry

Joined: Sat May 12, 2012 7:25 pm
Posts: 2682
Location: Glermsford, Suffolk U.K
Damm forgot about the brakes -silver Planet X CNC jobs! Those are 220g so weight has jut gone up to 6.43kg. Got to get thinking.

Also I only got the frame yesterday. the ebay listing said it was columbus genius tubing but looking at the frame I don't think it is steel. The give away is it not magnetic. so it must be aluminium but with very smooth welds and 126mm spaced. So it must be late 80's or very early 90's. The question is who made it as for alloy it is rather nice. Of course this means the frame will be stripped of paint and polished. This will save plenty of weight.

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Last edited by bm0p700f on Wed May 04, 2016 9:51 am, edited 1 time in total.

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PostPosted: Wed May 04, 2016 9:44 am 
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Joined: Wed Jan 22, 2014 11:48 am
Posts: 1575
Location: Vienna Austria
Awesome project!

6.5 is a nice limit to stay under too IMO.

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godzuki26 wrote:
She is not allowed to run spacers under the stem. It must look good. It must be slammed. She does Yoga and Crossfit so she is getting into a pro position whether she likes it or not. Lol. She thinks cycling is easy. She needs to be schooled.


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PostPosted: Wed May 04, 2016 10:03 am 
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Joined: Sat May 12, 2012 7:25 pm
Posts: 2682
Location: Glermsford, Suffolk U.K
The thing is only a few ago weeks ago I said to myself no more bikes this year then I looked around and saw all these light parts and though what the hell.

Just called a metal polisher £200 to have the frame polished as it is definatley aluminium. Just got to re-space it to 130mm that is not so easy on alloy.

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PostPosted: Wed May 04, 2016 10:12 am 
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Joined: Mon Sep 08, 2008 7:44 am
Posts: 497
Location: Oztralien
Would anodizing be cheaper/easier if its alu.?


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PostPosted: Wed May 04, 2016 10:14 am 
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Joined: Sat May 12, 2012 7:25 pm
Posts: 2682
Location: Glermsford, Suffolk U.K
I am not sure who would re anodise a frame though. Industrial finish is easy to get done but a nice purple that is harder.

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PostPosted: Wed May 04, 2016 12:43 pm 
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Joined: Fri Nov 21, 2008 11:23 pm
Posts: 228
Location: Mal Born, Oz.
any way the drop outs can be machined 2mm off the thickness each side ?


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PostPosted: Wed May 04, 2016 4:47 pm 
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Joined: Sat May 12, 2012 7:25 pm
Posts: 2682
Location: Glermsford, Suffolk U.K
A file is the solution here for the dropouts.

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PostPosted: Wed May 04, 2016 5:08 pm 
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Joined: Sat Jan 15, 2011 9:59 pm
Posts: 65
Love this already!


Sent from my iPhone using Tapatalk


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PostPosted: Wed May 04, 2016 7:52 pm 
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Joined: Sat Apr 04, 2015 11:42 pm
Posts: 16
interested to see how this develops.

what fork are you putting on there?


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PostPosted: Wed May 04, 2016 11:48 pm 
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in the industry

Joined: Sat May 12, 2012 7:25 pm
Posts: 2682
Location: Glermsford, Suffolk U.K
Columbus minimal because it is light and cheap. £100
Woodman Carbo EL seatpost purchased $114 shipped to the U.K (new)
Frame (and fork) £135 euro shipped. The columbus Genius chromed fork though is in fine condition and will be sold to reduce to the total bill.

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PostPosted: Thu May 05, 2016 10:40 am 
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Joined: Tue Apr 19, 2016 10:38 am
Posts: 3
This is an interesting project. Any pictures of the Look? If it turns out lighter will you simply swap components or are you planning on building up both?


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PostPosted: Thu May 05, 2016 11:42 am 
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Joined: Sat Apr 16, 2016 3:06 pm
Posts: 26
Looks great subscribed, puts the weight of my nice new carbon bike to shame, well done!

Sent from my Nexus 5 using Tapatalk


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Posted: Thu May 05, 2016 11:42 am 


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