Weight-Weenie Fixed Hillclimb Bike

Know this forum likes a good old fashioned WW thread. Watch this space.

Spreadsheet

Nice project, you got a target weight?

No cos I have no idea what's realistic and it'll end up expensive. Sub 7kg would be nice but dunno how feasible that is. I need a spreadsheet.

I doubt you'll have problems, my bianchi was 7.1 like this, no parts were selected for their weight.

Thinking about trying to get it even lower, gonna build a new wheelset for sure.

1 Attachment

What do the f&f weigh?

Sub-7 should be no problem, my STEEL tt fixed is only 7.6 with no weenieing.

China is your friend: you won't be sitting down much, so a carbon saddle at 70g only costs £30, low-profile carbon rims don't cost much (either buy complete wheels for ~£250 or build your own) tubulars are much lighter. £18 gets you a ~175g seatpin. I don't think I'd trust Chinese bars and stem for a hillclimb effort....

The cheapest weenie of all is GP Supersonic tubes if you're using clinchers, 100g saving over normal tubes for around £20.

3/32 drivetrain saves weight and allows you to butcher a cheap secondhand road chainset (simply file off the small ring lugs).....

Best of luck, 6 to 6.5 should be easy without breaking the bank!

What indra said; my singular also was 7kg without any WW parts. My FM066 with Di2 and P2M is 8kg. So 6kg is what you should aim for a true WW project.

Aero fork on hill climb bike >>>>>>>>

20mm rims 24/20h; latex tubes etc. or tubs even; chinese fork (my fm066 fork is just above 300g) and seatpost; kalloy stem; ultegra + USE @Sumo style crankset, KCNC seat pin etc. and you will be looking at 6kg-ish.

this interests me, thinking of a similar build for CC Sudbury Hill Climb.

Easy 6kg with cheap Chinese carbon. Good luck.

I'll do a proper projected build list when I get home, but it's gonna be tubs, Red cranks with 3/32 drivetrain, Chinese carbon and Kalloy. Bars are throwing me at the moment, bullhorns are obviously lighter but I prefer climbing with drops and hoods.

This was last year's build. No idea what it weighed, but there's obviously plenty of scope for weight loss.

Followed! I'm planing something similar with a heavier Start. Just ordered a Pre Cursa (Frame only) in 60cm.

There is no problem to get a prober chainline with the Red Cranks?

3/32 ring on the inside of the tabs should be fine.

This is exciting. I think my weenie hillclimb fixie was about 6.5

I did it last year; the flat start threw me, the right gear for the hill is too low for the first section.

#excuses

Bars are throwing me at the moment, bullhorns are obviously lighter but I prefer climbing with drops and hoods.

Chop them below the hoods?

@umop3pisdn as for bars. I've got these on my weight weenie sub 6kg road bike. 180g and plenty stiff enough. It's the stem I'd be careful with. (I'm 74kg).
http://pages.ebay.com/link/?nav=item.view&id=291113388742&alt=web

Edit: I sanded and decals off and re-laquered

Bro do u even spin/mash?

http://www.light-bikes.de/website/new/2007/03/07/crumpton-3266-kilogramm

Look interesting. Should say that this is also a bit of a stiffnessweenie project (reason for the Vigorelli frame).

on a budget

What's the frame weigh? Reckon you can get sub 6kg reasonably easily.

A fair chunk. 1.6-1.8kg? Gotta be a couple of hundred grams of paint on there, it's thick.

Spoilsport

When I researched my ww build last year, nothing came close to those hylix Chinese bars £/gram. I don't notice much flex when out the saddle.