Factor O2 Disc Superlight build thread, Sub 5.1kgs

Who are you (no off-topic talk please)

Moderator: Moderator Team

tonytourist
Posts: 1181
Joined: Sat Oct 10, 2009 7:13 am
Location: 93306

by tonytourist

Probably because they’re a Factor dealer :roll:
Looking forward to this build, Jason!

User avatar
madcow
Shop Owner
Posts: 3741
Joined: Sun Feb 06, 2005 4:22 pm
Location: Tucson, Az.
Contact:

by madcow

rekhyt wrote:
Wed Feb 14, 2018 12:23 am
Why did you chose the THM stem over the AX one? Bulky, ugly and heavier vs. elegant and fitting the frame.
I think when it's done the stem will match the bike pretty nicely. The top tube is flat to match the lines of the stem and the downtube is really big which should match the scale. If not we can change it.
bilwit wrote:
Wed Feb 14, 2018 6:38 pm
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
I'm often surprised by how hard some companies/media find it to be to put together a light bike that works, they often don't realize more weight is saved in the little details rather than by replacing the largest items with lighter ones.

prendrefeu wrote:
Wed Feb 14, 2018 11:47 pm
This should be fun.

But why this frame?
We looked at a few different frames and decided that when you look at the package this is definitely one of the lighter setups. We could have done a Parlee as well but have already built quite a few of those and we wanted to see what we could do with the Factor.

by Weenie


User avatar
madcow
Shop Owner
Posts: 3741
Joined: Sun Feb 06, 2005 4:22 pm
Location: Tucson, Az.
Contact:

by madcow

Part 2 of the project is posted: http://blog.fairwheelbikes.com/2018/02/ ... ct-part-2/ Some of the highlights:

Image

BB after some mods, shaved 24 grams.
Image

Image

Mixing Fibre Lyte 34t with Carbon Ti 50T
Image

Rear Derailleur, after a pulley wheel change, 13 grams lighter
Image

Progress so far,
Image

Now on to the wheels and some of the final details.

jeffy
Posts: 1255
Joined: Sun Oct 05, 2014 11:51 pm

by jeffy

i am pretty surprised at how much high end road disc forks weight considering an uncut tcx advanced pro disc fork (cx) is 400g

dereksmalls
Posts: 2012
Joined: Tue Aug 02, 2011 9:20 pm
Location: New Zealand

by dereksmalls

Loving the blog explanation - should have read that before I quoted you Madcow then deleted it. Sorry!

Any chance of putting up pics of the prototype Myth crank though? Is this the original Mythical crankset or one of the new prototype Ride Wert titanium ones?

User avatar
KaneChang
Posts: 33
Joined: Fri Nov 03, 2017 3:14 am

by KaneChang

I think 5.2kg is no way for Clincher wheelset, but if using tubular wheelset( like AX or Extralite) and superlight tubular tire maybe can be very near.

User avatar
CAMSHAFT
Posts: 237
Joined: Sat Mar 20, 2010 12:55 am

by CAMSHAFT

Looking good bro! Keep up the good work!

PyotrGhimme
Posts: 15
Joined: Thu Feb 15, 2018 11:11 am

by PyotrGhimme

i am also badly looking for the complete bike haha


Delorre
Posts: 913
Joined: Sat May 24, 2014 12:09 pm

by Delorre

OMG, 822gr disc wheels? :shock: Talking about about pushing the limits :shock: What would be a realistic rider weight limit for such a wheelset? And not only for staying in 1 piece, but more for the riding characteristics in general.

User avatar
madcow
Shop Owner
Posts: 3741
Joined: Sun Feb 06, 2005 4:22 pm
Location: Tucson, Az.
Contact:

by madcow

They came out at 821 grams. As for a weight limit no we don't have one yet. Being 61kgs and very easy on my bikes I don't particularly have concerns that these will be fine for me. The bigger question will be about lateral stiffness once some of the heavier and stronger guys here get to ride it and how well the ti spokes hold up in low spoke count disc wheels. I've been using the spokes in a 28h disc version on my mtb for almost 2 years and haven't had a single issue with them.


spdntrxi
Posts: 1474
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

madcow wrote:
Mon Feb 26, 2018 6:05 pm
Image
Finished weight just below 5.1kgs.

Full build list and gallery posted: http://blog.fairwheelbikes.com/2018/02/ ... ct-part-4/
forsale ? :)

atleast give us a rough idea to replicate.. I like it

User avatar
madcow
Shop Owner
Posts: 3741
Joined: Sun Feb 06, 2005 4:22 pm
Location: Tucson, Az.
Contact:

by madcow

To do it exactly like this it would be just a touch over $12k.

spartan
Posts: 1107
Joined: Fri Sep 03, 2004 2:52 am

by spartan

nice build. but total weight should ALWAYS include pedals. the bike has to be rideable :)
Current Rides:

2017 Giant TCR Advanced SL 0 DI2 9150

by Weenie


Post Reply
  • Similar Topics
    Replies
    Views
    Last post