Record breaking!7.19kg 29er full suspension bike

Discuss light weight issues concerning mountain bikes & parts.

Moderator: Moderator Team

Post Reply
User avatar
SRICarbonWorks
Posts: 10
Joined: Wed Mar 28, 2018 4:27 am

by SRICarbonWorks

My friend's Cannondale Scalpel 29 (size L). Probably the world 's lightest.Have to admit, that is weird.
The construction has not completed yet, his goal is to reach under 6.5kg. The wheelset is overweight. Trickstuff piccola brake, Grigio Carbonio wheelset with Berd Spokes are on there way.
36130CE5-C5EF-4EE5-814C-10E13365876B.jpeg
3612F813-DD83-464D-995B-B7E55EE13AEA.jpeg
71AA20A8-D652-4AA7-85C6-2AB00C194E99.jpeg
95CF9958-4661-4F12-9FCF-9344B545FF3A.jpeg
928CFF91-F406-4857-A146-6D334DF62463.jpeg

User avatar
SRICarbonWorks
Posts: 10
Joined: Wed Mar 28, 2018 4:27 am

by SRICarbonWorks

This wasn't a light frame but the owner conducted some modifications.
A DT Swiss X313 carbon shox, reduced 79g
A carbon link rod, maybe some kind of prototype from a bike show, reduced 78g.
Scraped off the paint, removed some metal parts in the frame, and finally polished it with wax, incredibly reduced 170g
Titanium bolts of course.
Final weight: 1730g. Only 90g heavier than UNNO
A817401D-2BF3-4414-AEAB-6DB88070D3CB.jpeg

by Weenie


User avatar
Klaster1
Posts: 213
Joined: Mon Aug 15, 2016 10:25 am
Location: Krasnoyarsk, Russia

by Klaster1

What rotors are those? These don't look like SiCCC. Also, Gullholm's Spark without pedals should be the same weight wise. Still, this is quite awesome.

User avatar
SRICarbonWorks
Posts: 10
Joined: Wed Mar 28, 2018 4:27 am

by SRICarbonWorks

Fork: Lefty PBR, 100mm travel, with some carbon parts from Leonardi&Hopp
Carbon&alloy steerer-tube made by Experimental Prototype, only 78.3g
5F72BBA7-7F3F-4DF9-95BE-5AC6AB5BF617.jpeg
595A55C2-66ED-4ED7-B460-6DC6F0DE9666.jpeg

User avatar
SRICarbonWorks
Posts: 10
Joined: Wed Mar 28, 2018 4:27 am

by SRICarbonWorks

Trigger shifter&rear derailleur: Acros Age 11s with self-made ceramic pulley wheels and aluminum bolts (271g)
Crankset: THM Clavicula dp with Extralite octone chainring (373g)
Cassette: sram XG1195 (262g)
Chain: PYC SP1101 (216g)
Brake: Currently Formula R1 Racing(362g), will soon replaced with Trickstuff Piccola
Rotor: Alpha (38gX2)
439B16C0-9A4A-490E-A7EC-314BD6A4742D.jpeg
94E22149-071D-4116-85E7-0AB604B60DE1.jpeg
B46E4254-7CA5-4C6B-B41B-89F0ABAB0052.jpeg

tonytourist
Posts: 1179
Joined: Sat Oct 10, 2009 7:13 am
Location: 93306

by tonytourist

Awesome weight, please post more build pictures!

User avatar
SRICarbonWorks
Posts: 10
Joined: Wed Mar 28, 2018 4:27 am

by SRICarbonWorks

Handlebar: Darimo 700mm (84g)
Stem: Extralite Ultrastem (74g)
Seatpost: Darimo 31.6X290mm (78g)
Seat Clamp: Carbonice EVA (4.5g)
Saddle: Gelu K1 (47g)
Tyre: Maxxis Maxxlite 29 (336+338g)
Tube: Tubolito S-Tubo MTB (47+45g)
Pedals: Aerolite CLA (59g)
4A140436-26F9-4A35-9E4D-FC9CC9079727.jpeg
3708EB82-9BD5-4D62-942D-E103B8B608B5.jpeg
Due to the size of frame, we chose a shorter seatpost. Theoretically Gelu K3 is the lightest saddle in market, but it is not recommended for MTB.
Last edited by SRICarbonWorks on Thu Mar 29, 2018 3:10 pm, edited 1 time in total.

User avatar
tskubi
Posts: 64
Joined: Thu Jun 23, 2011 12:09 pm

by tskubi

Gelu K1 is the mtb sister of Gelu K3 which has holes in it
K3 is for road use only.

http://www.gelucarboncreation.com/

ImageImage
Enjoy your time under the sun.. and when its cold and dark don't worry too much, the world will keep spinning and your time in the sun will come again.

User avatar
SRICarbonWorks
Posts: 10
Joined: Wed Mar 28, 2018 4:27 am

by SRICarbonWorks

tskubi wrote:
Thu Mar 29, 2018 11:37 am
Gelu K1 is the mtb sister of Gelu K3 which has holes in it
K3 is for road use only.

http://www.gelucarboncreation.com/

ImageImage
That was my mistake...

Pat2A
Posts: 19
Joined: Fri Aug 01, 2008 12:13 pm
Location: France

by Pat2A

tskubi wrote:
Thu Mar 29, 2018 11:37 am
Gelu K1 is the mtb sister of Gelu K3 which has holes in it
K3 is for road use only.
They updated their Website because before K3 was usable for MTB.

Gelu-K3.jpg

Jepas
Posts: 69
Joined: Wed Feb 22, 2012 6:56 pm

by Jepas

SRICarbonWorks wrote:
Wed Mar 28, 2018 6:58 am
This wasn't a light frame but the owner conducted some modifications.
...
A carbon link rod, maybe some kind of prototype from a bike show, reduced 78g.
...
Cannondale sells a carbon link ref number KP207/CRB for the Scalpel 29er frame, this carbon version weights about 105g shaving 85g from the stock alloy version.

User avatar
SRICarbonWorks
Posts: 10
Joined: Wed Mar 28, 2018 4:27 am

by SRICarbonWorks

Weight updating
7.16kg,with Leonardi 9-36T 11 speed cassette, saved 32g (Though sacrificed some performance)
11B4EAB5-66AD-4844-A3A1-597D2A92C6E9.jpeg
99A766BD-8B82-4D71-AA72-4F315CA1FE8F.jpeg

02GF74
Posts: 570
Joined: Thu Jan 13, 2011 4:04 pm
Location: Sunny UK

by 02GF74

The later si scalpel frames are lighter still, nevertheless that is quite an achievement, from memory mine after some tweaking is in region of 10.5 kg.

by Weenie


Post Reply
  • Similar Topics
    Replies
    Views
    Last post