MT ZOOM Ultralight Seatpost Clamps 5.5g

Discuss light weight issues concerning mountain bikes & parts.

Moderator: Moderator Team

02GF74
Posts: 577
Joined: Thu Jan 13, 2011 4:04 pm
Location: Sunny UK

by 02GF74

Apparently 5.5g. :shock: Anyone used these yet, think they are the lightest clamps I've seen but they look quite flimsy to me.

Image <---- linky

by Weenie


DanW
Posts: 1037
Joined: Fri May 02, 2008 5:39 pm
Location: Here, there and everywhere

by DanW

I had one of the slightly heavier clamps from Mt Zoom and the band snapped with 3Nm (not enough to stop the seatpost slipping). I got a KCNC clamp at 12g to not have the stress of overly delicate parts for a few extra g's. Interesting looking clamp though!

FireSpitter
Posts: 127
Joined: Fri Jul 29, 2011 3:19 am

by FireSpitter

Haven't seen how much it costs but it's worth a try if it ain't too costly, me thinks. Anthony from Mount Zoom gives great warranty. I had a ordered a carbon bar some months back and it came with a scratch mark (Which was only visible at an angle). I was worried that it was a crack inside but Anthony sent a new one over anyway. :thumbup:
Please visit my blogs:-

I'm a MILF - er blog (Help raise awareness!) http://firespitter38.blogspot.com

True tales from the dark side http://truetalesfromthedarkside.blogspot.com

02GF74
Posts: 577
Joined: Thu Jan 13, 2011 4:04 pm
Location: Sunny UK

by 02GF74

FireSpitter wrote:Haven't seen how much it costs but it's worth a try if it ain't too costly, me thinks.


the picture is a link to the advers, to save you clicking , they cost £17.99

the are "Made from super strong high grade 7076 T6 Aluminium"

A quick look on ebay at other light clamps:
17 g KCN 7075
13 g KCNC clamps are made from 7075-T6
13 g post from 6061
9.8 g MT XZoom 7075

comparison of Al alloys
T6 temper 6061 has an ultimate tensile strength of at least 42,000 psi (300 MPa) and yield strength of at least 35,000 psi (241 MPa).

7075 has an ultimate tensile strength of at least 67 - 78,000 psi (462 - 538 MPa) and yield strength of 54 - 67,000 psi (372-462 MPa).

7075 Tensile Strength, Ultimate 510 MPa 74000 psi and Tensile Strength, Yield 470 MPa 68200 psi

Colin
Posts: 709
Joined: Mon Mar 02, 2009 4:50 am

by Colin


User avatar
chucklight
Posts: 35
Joined: Tue Feb 28, 2012 6:47 am
Location: Liverpool

by chucklight

Mine weighs 9 grams for a 34.9mm version (others are available) and only cost £10 with postage from USA, turned up in less than a week. It's super tough and hasn't budged a mm since installing. Would highly recommend.

Seller link below

http://www.ebay.co.uk/itm/Ultralight-Se ... 43ae07b348
Bike: 2012 Boardman HT Pro MTB - 21.838lbs / 9.906kg (for now...)

andrewh8877
Posts: 86
Joined: Mon Sep 14, 2009 8:51 pm

by andrewh8877

Not tried them (ISPs all round) but the other Mt Zoom bits I've got have been reliable so far, evening been DHing with the skewers which i was a little dubious about but they were fine.

Starla
Posts: 34
Joined: Tue Dec 05, 2006 6:07 pm
Location: Basingstoke, Hampshire, UK

by Starla

I've got an FRM - 11g one in Titanium, but the seatpost (carbon) slips constantly - avoid !

DanW
Posts: 1037
Joined: Fri May 02, 2008 5:39 pm
Location: Here, there and everywhere

by DanW

Despite my initial criticism I decided to give the 6g Mt Zoom clamp a go.

Having lightly greased the outer seattube and inner clamp and also turned it around so the slot faces forwards (all the tricks I could find online for lightweight clamps) it seem to be holding well. My scale is only accurate to the gram and it shows up as 6g... pretty awesome!

Will update if I encounter any problems (touch wood there will be not updates!)

Patrul
Posts: 7
Joined: Wed Jan 02, 2013 12:10 am

by Patrul

Mine is working with KCNC seatpost, Not sure if it will work as good with my new EC90

ninjanoir78
Posts: 202
Joined: Sat Jul 19, 2008 8:14 pm

by ninjanoir78

I am still looking for a light 30.0 clamp in red for my super six evo.. the stock clamp is already pretty light but i want RED.. we can buy green from cannondale dealers, not red.. any idea? I dont want to pay 100 $$

sent from my galaxy SIII
Ninja

BmanX
Posts: 3844
Joined: Thu Nov 10, 2005 5:31 pm

by BmanX

Image

Run these on every single build with a standard seat post. Never had an issue.

Total weight
31.8mm: 8.4g
34.9mm: 9 g

http://www.procyclingworld.com/servlet/ ... sh-/Detail
BIG DADDY B FLOW
AERO & LIGHT is RIGHT

Cervelo SLC 5960g/13.13 lbs

User avatar
Juanmoretime
Administrator
Posts: 7093
Joined: Sat Jun 19, 2004 11:08 am
Location: Urbana, Illinois

by Juanmoretime

This is my third season on my New Ultimate clamp. I too had slippage from other clamps but no only has this one been great to use I've experienced no slippage or creaking.

Image
RESIDENT GRUMPY OLD MAN.

snowdevlin
Posts: 176
Joined: Sun Oct 19, 2014 2:51 pm

by snowdevlin

hi there,
bringing this post back to life now :-)

Any other feedback on this clamp?
Have been looking for another seatclamp to match my WW build, but it must have no more then 12mm height, this checks on that department and weight as well.

You guess it would be a safe buy or should I been looking at another one?

cheers

DanW
Posts: 1037
Joined: Fri May 02, 2008 5:39 pm
Location: Here, there and everywhere

by DanW

Over 2 years use and still no problems (touch wood!). No slipping or creaking across 3 frames (Scalpel/ Scandal/ Chinese 29er). Seems like a quality clamp and I'd go for it again even if it weighed three times the weight :)

by Weenie


Post Reply
  • Similar Topics
    Replies
    Views
    Last post