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Submitted by
Markus
a Racer
from Germany
Date Reviewed: August 18, 2004 | | Duration Product Used: | Less than 1 month | | Price Paid: |
$220.00 | | Purchased At: | LBS | | Strengths: | Light | | Weaknesses: | Crank arms have play right from the start | | Similar Products Used: | Shimano BB-UN72, Shimano BB-M950, Shimano BB-M952 | | Bike Setup: | Hardtail, cranks: Tune Big Foot | | Bottom Line: | I am reviewing the Tune "Sixpack" BB (hex taper). It is similar to the AC38 (square taper). These BBs have one fixed bearing (inner ring is fixed on the axle) and one "loose" bearing (inner ring is gliding on the axle when BB shell is tightened). Unfortunately the inner ring of the "loose" bearing did not exactly fit the axle of my "Sixpack" BB, thus there was play between the bearing and the axle - leading to remarkable crank arm play. Same story with another "Sixpack" BB, so I conclude it is a general weakness. | Value Rating: Overall Rating: |
Submitted by
Martijn landzaat
a Cross Country Rider
from H.I.Ambacht/Holland
Date Reviewed: April 29, 2004 | | Favorite Trail: | Portes du Soleil/Les Gets | | Duration Product Used: | 1 Year | | Price Paid: |
$122.00 | | Purchased At: | Tune over the internet | | Strengths: | Light, Durable, stiff and low maintanance | | Weaknesses: | None | | Similar Products Used: | Shimano BB-UN72 and Tune AC37(steel axle) | | Bike Setup: | Cube Airwing Blackline, DT SSD210L, Fox Float 100RLC, XTR, XT 4-pot disc, Thomson, King ISO Disc/CX-ray/DT XR4.1d and lost more good stuff! | | Bottom Line: | This is an update of my previous post!
The Tune AC 38 BB is still going strong after one and a half years service in the Dutch mud, rain and other crap.
Took it out once to inspect but it still looked and feeled like new.
The bearings are smooth like new and very well shielded from water and debris.
I'm sure that I'm going to enjoy thes BB for many miles and years to come! | Value Rating: Overall Rating: |
Submitted by
martijn landzaat
a Cross Country Rider
from H.I.Ambacht, Holland
Date Reviewed: December 27, 2002 | | Favorite Trail: | Schoorl, Noord-Holland | | Duration Product Used: | Less than 1 month | | Price Paid: |
$122.00 | | Purchased At: | Tune direct order by e-mail | | Strengths: | Light, good reputation and superb finish | | Weaknesses: | Some say price but you get what you pay for. | | Similar Products Used: | Shimano XT(BB-UN72), Shimano LX(BB-UN52) | | Bike Setup: | Cube Airwing Blackline, XTR drivetrain, HS33 brakes, King/X618ceramic/X-Ray wheels and Thomson stem+post | | Bottom Line: | Got my AC 38 bracket direct from Tune and tried to mount it with the standart 2-pin wrench, this didn't work verry well.
Had my dealer check the tread of my frame and ordered the special W2 bottom bracket tool from Tune.
Received it today and mounting was a breeze with this tool.
The tool as 6 in stead of 2 pins and is well made, almost a shame to use.
(I think i'm going to order another one just to look at:))
Mounted the bracket with copper paste and it looks and feels perfect!
I hope this bracket will last longer than the standard Shimano crap I used before, but looking at the reputation of this bracket that shouldn't be a problem for a long time! | | Value Rating:Overall Rating: |
Submitted by
Marcel Frenk
a Cross Country Rider
from Nijmegen, The Netherlands
Date Reviewed: February 9, 2001 | | Favorite Trail: | Rijk van Nijmegen & Cristalp | | Duration Product Used: | 6 months | | Purchased At: | Fietssport Vincent Ede | | Strengths: | One of the lightest TI bottom brackets, still built to last. | | Weaknesses: | Bloody expensive, but none other. Maybe tune should make a splined set-up in the future. | | Similar Products Used: | Shimano XT, never had one that survived longer than 9 months (maybe because of the climate). | | Bike Setup: | Specialized FSR-XC M4, lots of tune stuff, Rond-Magura Quake Air 70, SRAM 9.0 SL | | Bottom Line: | If you want light, stiff enough, serviceable and long lasting, this is the BB. Read the manual (in German) and install it accordingly. | Value Rating: Overall Rating: |
Submitted by
Pascal NEPPER
a
from Luxembourg
Date Reviewed: November 13, 2000 | | Favorite Trail: | street trials | | Duration Product Used: | More than 3 years | | Price Paid: |
$125.00 | | Bottom Line: | I cleaned it and reinstalled it with copper grease and a bit of loctite, and now it doesn't creak any more, so 5 stars! | | Value Rating:Overall Rating: |
Submitted by
Pascal NEPPER
a Weekend Warrior
from Luxembourg (Europe)
Date Reviewed: August 21, 2000 | | Favorite Trail: | Street, trials. | | Duration Product Used: | 2 Years | | Price Paid: |
$125.00 | | Purchased At: | Hibike.de | | Strengths: | Light
STRONG ! It has long Ti screws. I broke several Ti Spindles between the bearing and the crank, those screws go deeper in the BB spindle, making it stronger.
Color | | Weaknesses: | They can't be tighten with a shimano BB tool
No conterbolts, so it slowly gets loose & creaks.
Not cheap ! | | Similar Products Used: | Syncros Ti, Streak'x Ti (French manufacturer), Shimano steel | | Bike Setup: | Merlin Taïga 15" for trials, street, freestyle. XTR, Mavic, Race Face, Moots, ... | | Bottom Line: | truly one of the best Ti BB. Stiffness/weight ratio excellent. Would be even better if compatible with shimano BB tool.
It creaks a bit, but I must admit trials is hard for the equipment.
Maybe I should consider to get a bombproof Shimano XT :-)
4 Chillis 'cos it's 95% perfect. | | Value Rating:Overall Rating: |
Submitted by
Marko
a Cross-Country Rider
from Zurich, Switzerland
Date Reviewed: August 12, 1999 | | Favorite Trail: |
Uetliberg | | Duration Product Used: |
1 Year | | Strengths: |
Very light: 158 gramms for 113mm lenght.
Includes extra long ti fixing bolts. They reduce spindle flex.
3 sealed bearings also reduce flex.Very stiff for the weight.
Lasts long. | | Weaknesses: |
Absolutely none. | | Similar Products Used: |
XTR
XT
LX | | Bike Setup: |
Breezer Lightning
Breezer Fork
Tune BB
Bike Tech Carbon Cranks (310 gramms)
Dt Hugi Wheelset, Revolution spokes.
XTR Derailleurs.
XTR Brakes. | | Bottom Line: | Lightweight, quite stiff, long lasting!
The best one out there.
5 hot chilies!!! | | Overall Rating: |
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