Factor O2 Disc Superlight build thread, Sub 5.1kgs

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madcow
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by madcow

Edit: To add a finished photo at the beginning and a finished weight of 5092 grams.
Image



We've started a new project to do a lightweight disc road racer. We're using the Factor O2 Disc frameset as a foundation and will chronicle the build in full detail on our blog. The first part is here: http://blog.fairwheelbikes.com/2018/02/ ... ct-part-1/

Frameset
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Cut Fork
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Headset before and after:
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Expander and top cap
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Spacers changed stock carbon to Tune Magnesium
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Stem and finished front end
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More to come...
Last edited by madcow on Mon Feb 26, 2018 6:03 pm, edited 2 times in total.

by Weenie


whilgenberg
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by whilgenberg

Hell yeah! Definitely looking forward to seeing what you guys can do.

Delorre
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by Delorre

madcow wrote:
Tue Feb 13, 2018 6:36 pm

Frameset
Image
I suppose it's as bare as it can be, so not a single removable metal part attached? : no bolts, no rear hanger, no seatpost clamping mechanism,... Just to get an idea of the real weight compared to my Addict disc frame f.ex

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madcow
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by madcow

Delorre, Weight for the frame includes the front braze on mount as well as the rear derailleur hanger. Does not include bottle cage bolts or the seat collar.

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ms6073
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by ms6073

Curious if it is a good idea to swap out the longer expansion plug for the stubby one on a disc brake bike, or does the longer one impose an artificial stress point on the steerer versus the stubby? Oh, and I am thinking Fairwheel should get Godzuki involved. 8)
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Delorre
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by Delorre

madcow wrote:
Tue Feb 13, 2018 8:30 pm
Delorre, Weight for the frame includes the front braze on mount as well as the rear derailleur hanger. Does not include bottle cage bolts or the seat collar.
very descent weight in that case!!Looking forward to the other parts of the build. 5.5kg would be awesome :shock:

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madcow
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by madcow

Delorre wrote:
Tue Feb 13, 2018 8:49 pm
very descent weight in that case!!Looking forward to the other parts of the build. 5.5kg would be awesome :shock:
I'd be disappointed at 5.5kg, we're aiming to be right around 5.2kg for the build. After that and just for fun, we may do an alternate version at sub 5kg.
Last edited by madcow on Wed Feb 14, 2018 12:38 am, edited 1 time in total.

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sugarkane
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by sugarkane

madcow wrote:
Tue Feb 13, 2018 8:30 pm
Delorre, Weight for the frame includes the front braze on mount as well as the rear derailleur hanger. Does not include bottle cage bolts or the seat collar.
extralite SPD mcfk wheels?

rekhyt
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by rekhyt

Why did you chose the THM stem over the AX one? Bulky, ugly and heavier vs. elegant and fitting the frame.

Interesting to see what the final bike will look like and which tricks you'll use to get the weight down.

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jimaizumi
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by jimaizumi

Would think MCFK's unidirectional stem would be very close the weight of the THMs but much nicer in the aesthetics department?
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by dereksmalls

:popcorn: :popcorn: :popcorn:

spdntrxi
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by spdntrxi

Love the stem personally.. do want

bilwit
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by bilwit

expander is not exactly WW is it? :P

also funny that Factor lended GCN some a couple of rim brake O2s for the Taiwan KOM Challenge fitted with THM throughout and they could only get it to 6.2kg without a powermeter :x

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bura
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by bura

Thank you for sharing. Like the stem.
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prendrefeu
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by prendrefeu

This should be fun.

But why this frame?
Exp001 || Other projects in the works.

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