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Submitted by
OTTO
a Cross Country Rider
from British Columbia
Date Reviewed: September 15, 2002 | | Favorite Trail: | Rattlesnake Mtn. | | Duration Product Used: | More than 3 years | | Strengths: | Stiff crank, two piece design ( including axle), superior
torque transmission (splined) | | Weaknesses: | sprocket spider wobbles | | Bike Setup: | Kona titanium rigid | | Bottom Line: | I had my cranks nickel plated shortly after I got them so they wouldn't rust. The spider wobbled immediately after a hard ride so I made a spacer to take up the clearance between the arm and the spider (I'm a machinist). After a few years the threaded pedal insert broke off the crank arm due to poor tig weld penetration.I rewelded it , which made it last a few more years until it finally fractured on the left side near the bearing (in the radius). Scrap | Value Rating: Overall Rating: |
Submitted by
Weekend MTBr
a Weekend Warrior
from Seattle, WA
Date Reviewed: October 24, 1999 | | Favorite Trail: |
Skookum Flats | | Duration Product Used: |
more than 3 years | | Strengths: |
Easy installation, service. Needs only allen-head wrenches to mostly remove; standard cup/cone wrenches to remove cups and bearings. Should be easy to adapt for lube injection. | | Weaknesses: |
Spider bends, loosens easily. Rusts. Wide tread (``Q-factor') | | Similar Products Used: |
Bullseye, CODA (Magic Motorcycle style), Ritchey (74/110 and compact),Shimano XT (various years), Sugino,SunTour XC Pro | | Bike Setup: |
Jamis (steel, hardtail, rigid fork) | | Bottom Line: | Older ones have a reputation for breaking. I do not know about the newer ones, but I believe that Tioga no longer makes these cranks.The construction is one arm with a split clamp (like Bullseyey) and another arm with an integrated spindle. Uses two standard cartridge bearings and aluminum cups.My major complaint is that the spider-to-crank interface is weak. The small chainring is directly over where the spider rests on the spindle. The large chainring hangs out in space, and the large chainring is what you hit on logs, etc. So the round hole of the spider gradually gets oval. Since the spider is not otherwise supported laterally (it does have a pin to transpit torque), the chainrings can wobble side to side. Retired to commuter/errand bike use, but over time the shifting gets worse, and eventually the chain auto-shifts due to large (6-8mm) lateral motion of the chainrings. Last I checked, a replacement spider was about $40. Since it will just fail again, I pulled the cranks from service and put $40 towards something else.The cranks are steel and the finish comes off and then the cranks rust. Structural or cosmetic? I do not know.Cranks are fairly wide tread (Q) and then the pedal eyes are fairly wide, so the overall tread is large.Due to coarse spline and average (17mm?) spindle diamater, the spindle may be about as strong or weak as a conventional BB. Note that the Bullseye uses the same general pinch clamp arrangement but a 22mm spindle and fine (shallow) splines.If it were not for the spider, I would give it 4 stars. | | Overall Rating: |
Submitted by
Jon
a downhiller
from Washington
Date Reviewed: March 9, 1999 | | Bottom Line: |
I bought these crank about two months ago. they are the bomb. The are very light and strong. This crank contends with the best of them. I have ridden xtr, raceface... but this crank is a hands down winner. I strongly suggest them for down hill or cross country. Awsome | Overall Rating: |
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