Help me build world lightest MTB

[goodyes]

Hello guys, as many of you may know I built the World Lightest Klein MC1 at 6.6 KG last year, despite I sold the frame to my friend John Williams.

Now over my head Im thinking in to build world lightest MTB, and as you may know I like the classic, so I wish to be able to do it in 26" - 26er - 26 inch

I am aware of world lightest record for MTB (29er) from a guy who said 4.5Kg althougt in his videos shown 4.8-4.9Kg

This is only the first post, and before to see if I need to made my own frameset ( so CAD design and manufacture prototyping of fiber carbon will be needed so a lot of money), now that I dont have too much money question is:

Are there any frameset in fiber carbon supporting 26" wheels, and preferably for cantillevers or v brakes ? (sub 1.0 Kg)
Are there any fork rigid in fiber carbon for 26" for cantilevers or v brakes (I only know DT Swiss 455 26 at about 600 gr
Target is 1.5 Kg frame + fork

 

[rwm1962]

Who adjuticates these world records?

I can understand wanting to build a light bike but how can you ever know it's the lightest?

 

[goodyes]

Who adjuticates these world records?

I can understand wanting to build a light bike but how can you ever know it's the lightest?

To be world lghtest, for me,a must is to prove with a video that the bike weight any grams, provided there's no other one with a lighter setup documented and shown on a video.
Of course more expensive solution is to go to Guiness record, but then you ust wait many many time or pay a fee for express


https://weightweenies.starbike.com/listings/components.php?type=rigidforks

NON 26
enve 350gr
https://www.enve.com/product/rim-brake-fork/
http://carverbikes.com/parts/forks/

650B FORK
610GR
http://carverbikes.com/parts/forks/xc-470/

Forks 26":

CARBON CANTILEVER 800GR
http://carverbikes.com/parts/forks/xc-410-retro/
Origin8 Fork 26X4.0 Full Crbn 250Xtdlsx1.5+1-1/8Post Crn-Axle 465Mm DISC ONLY 610 GR
https://www.ebay.com/itm/192880908252?hash=item2ce89917dc:g:gaUAAOSwpChcfuQf



CarbonCycles.CC 700 gr only disc

eXotic Monocoque Carbon MTB Fork Incl QR15 Axle, PM Disc, 26in, Tapered Steerer​

And then theres the opened version to put wheels on
eXotic Monocoque Rigid 26in MTB Fork, Single Piece Construction 44.5cm Tapered
at 680 gr they said


https://www.carboncycles.cc/index.php?p=1250&
https://www.ebay.com/itm/191244218148?hash=item2c870b2f24:g:trkAAOSwW3pgjvPP









SASO Rigid Carbon Fiber MTB XC 26" Fork 920gr (too uch)


Tossek, claiming 530 gr. 26". ONLY DISC. Stance width: 65mm

Rock Solid Carbon 725gr, Might be possible to cut the bars say 4cm in lenght and the glue again to the head, to save gr and use 26" wheels ? providing a cnc mecanized for v brakes is made​

https://mrpbike.com/products/rock-solid-carbon?variant=14314260168746

Team X Canti 1 1/8″​

Cyclocross. Off-road

Weight

650g – 780g

https://woundupcomposites.com/product/team-x-canti-1-1-8/




DEPRECATED:
PACE RC31 26" DISC 670g (disc only, uncut steerer) https://bikemagic.com/bike-components/forks-rigid/more-yorkshire-forking.html
Merida carbon rigid fork MERIDA V BRAKE !! 750GR https://bikemagic.com/bike-components/merida-carbon-rigid-fork.html

INTERESTING HISTORY OF PACE FORKS
http://www.goatsurfer.com/pace_forks.html










A GOOD IDEA, LIKE PACE RC31, get a carbon fork from these days ang mecanize cnc something like this










CANDIDATES FOR 26" CANTI V BRAKES

TOKEN "as you can see, the weight is 555g"

MTB XC CARBON DISC+V BRAKE FORK​

$369.00CAD​

https://www.tufonorthamerica.biz/index.php?main_page=product_info&cPath=2_151&products_id=801
TRIGON M01 NOT PRETTY BUT V BAKES AND CARBON AT <600GR
Monocoque MTB XC fork in full carbon construction.
https://www.trigoncycles.com/show-58399.html Steerer: 1 1/8"
• Weight: 580g



similar to the old ritchey wcs 26" fork
CANDIDATE AT SAID TO BE 470GR
http://cheapbikeparts360.com/products/ritchey-wcs-carbon-mountain-fork/


CANDIDATES FOR >26", DISC
585GR
https://www.treefortbikes.com/Niner-Boost-29er-RDO-MTB-ForkoTHER BRANS
Whisky
Ritchey WCS Carbon 27.6 615 gr https://eu.ritcheylogic.com/eu_en/bike/forks/wcs-carbon-mountain-fork

 

[rwm1962]

There will likely be a zen rider somewhere with the lightest bike who doesn't even know it or care.

 

[nporternz]

you are going to have to go some seeing as the mondraker podium in 29er is 775g for the frame in a medium

 

[goodyes]

 

[Lickskillet]

As an add on to the concept of extremely light bicycle builds, I think that to claim the record, the bike should be required to complete one lap on an agreed upon course without anything breaking. All potential record holders would ride the same course. Or do most people think that being rideable isn't a factor for this particular record?

 

[nporternz]

if you are looking at a tapered carbon fork - it aint retro

 

[goodyes]

YA, but moonraker or better the Specialized, are 29", so 27 or 29 wheels, discs, etc ... I said Im trying to go 26" route, cantillevers/V's

 

[goodyes]

As an add on to the concept of extremely light bicycle builds, I think that to claim the record, the bike should be required to complete one lap on an agreed upon course without anything breaking. All potential record holders would ride the same course. Or do most people think that being rideable isn't a factor for this particular record?

I think the same