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square taper cranks - who's left making them?
Have these all gone the way of the dodo?
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square taper cranks - who's left making them?
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square taper cranks - who's left making them?
wrote:
Have these all gone the way of the dodo? Sugino, still makes a nice crankset: http://www.yellowjersey.org/cranx2.html T.A. is still makes a square taper, expensive in the USA: http://www.specialites-ta.com/produits/crank_gb.htm I believe Zinn still makes customs: 'http://www.zinncycles.com/cranks.aspx Tune Bigfoot: http://store.prostores.com/servlet/s...s/Detail?no=21 Campy Xenon is still a square, probably some low end (OEM) Shimano also. Other than that, I think it's limited to NOS and EBay. I still have squares on all three of my bikes, Campy and old RaceFace stuff. ISIS felt good, but BBs are trash. Never tried OctaLink, have yet to try this external system. -nate |
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square taper cranks - who's left making them?
Campy Xenon is still a square, probably some low end (OEM) Shimano
also. Other than that, I think it's limited to NOS and EBay. For 2007 I think the Campagnolo triple cranksets are square taper. Only the 135mm bcd and 112/110mm bcd, adn 110mm bcd cranks are the new torque coupler thing in the middle of the bottom bracket shell. If a triple frightens you, its easy to just not mount an inner ring and use a double length bottom bracket. You would have to check if the forged inner ring lugs clear the chainstay on the shorter bottom bracket. If not, then they can be easily ground off. Thus making it a permanent double crank. I've thought about doing this since the only Campagnolo cranks I ever see with 42 inner rings are triples. Buy a triple and get rid of the inner ring and lugs and you have a wonderful riding 53-42 double crankset. I still have squares on all three of my bikes, Campy and old RaceFace stuff. Me too. Chorus double, Centaur triple, RaceFace Turbine LP 94mm bcd only using the outer and middle positions for a micro compact, and Deore DX triple. ISIS felt good, but BBs are trash. Never tried OctaLink, have yet to try this external system. -nate |
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square taper cranks - who's left making them?
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square taper cranks - who's left making them?
wrote: Have these all gone the way of the dodo? I was wondering about that myself, as I just bought a set of FSA square taper mountain bike cranks at LBS on Friday that are out of production. White Industries makes beautiful singlespeed square taper cranks that I have promised myself I will use on a bike at least once in my lifetime. http://www.whiteind.com/ENO_Products/cranks.html Shimano, Sugino and Campagnolo seem to be your other options. I am using a set of the Shimano FC-M460 on a mountain bike that gets a lot of riding, and they have been excellent. Not too expensive. I agree with others, they are not going away completely. I'm planning to stick to square taper on all my bikes. Regards, Anthony |
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square taper cranks - who's left making them?
http://www.whiteind.com/ENO_Products/cranks.html Shimano, Sugino and Campagnolo seem to be your other options. I am using a set of the Shimano FC-M460 on a mountain bike that gets a lot of riding, and they have been excellent. Not too expensive. I agree with others, they are not going away completely. I'm planning to stick to square taper on all my bikes. I am totally confused by the bike industry. Read my question on head tubes. I just read that square taper is more efficient than any of these crazy things such as external BB or ISIS by a huge magnitude. Obviously Campy knew something. I've been trying to read everything on this since my ISIS drive BB lasted only 2000 miles(yet another post). -- --- William O'Hara www.N1ey.com - Amateur Radio and Railfan Blog www.yahoogroups.com/group/illinoiscentral - premier discussion list ICRR |
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square taper cranks - who's left making them?
William O'Hara wrote: http://www.whiteind.com/ENO_Products/cranks.html Shimano, Sugino and Campagnolo seem to be your other options. I am using a set of the Shimano FC-M460 on a mountain bike that gets a lot of riding, and they have been excellent. Not too expensive. I agree with others, they are not going away completely. I'm planning to stick to square taper on all my bikes. I am totally confused by the bike industry. Read my question on head tubes. I just read that square taper is more efficient than any of these crazy things such as external BB or ISIS by a huge magnitude. Obviously Campy knew something. I've been trying to read everything on this since my ISIS drive BB lasted only 2000 miles(yet another post). Yes: http://www.topeak.com/2006/products/minipumps/roadmorphg.php. The efficiency differences between bottom brackets with decent bearings [1] must be minimal. The weight differences are also typically negligible when related to real world performance A larger diameter BB shell standard would be useful for some, as the square taper is undersized from a durability (fatigue resistance) perspective (both of the spindle and the attached cranks). [1] I did have a cheap Shimano LP-37 go bad in the middle of a group ride, and the increase in friction was enough that it made it hard to keep up. When I removed the BB, I was not able to rotate the spindle with my bare hands. -- Tom Sherman - Here, not there. |
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square taper cranks - who's left making them?
William O'Hara writes:
http://www.whiteind.com/ENO_Products/cranks.html Shimano, Sugino and Campagnolo seem to be your other options. I am using a set of the Shimano FC-M460 on a mountain bike that gets a lot of riding, and they have been excellent. Not too expensive. I agree with others, they are not going away completely. I'm planning to stick to square taper on all my bikes. I am totally confused by the bike industry. Read my question on head tubes. I just read that square taper is more efficient than any of these crazy things such as external BB or ISIS by a huge magnitude. Obviously Campy knew something. I've been trying to read everything on this since my ISIS drive BB lasted only 2000 miles(yet another post). I think you are using the wrong term to describe the crank/spindle interface. There is no efficiency in that joint but rather reliability and durability. You could say the cottered crank was ideal if you ignore that it only worked well with steel cranks and that the bearings were too small in diameter, and that it took skill to install properly. The square taper inherited the cottered crank spindle, ball bearings and cups and has been burdened with them ever since. Not only do the spindles spall, the square taper is a mystery to most bicycle mechanics. For this reason there is a division about assembly with and without grease. Cranks have been split from excessive press fit but how these came about seems to still mystifies the manufacturers, having never themselves been able to reproduce such failures... although to cause it is simple. As a rule they don't read wreck.bike and seem not to know how. http://pardo.net/bike/pic/fail-001/FAIL-001.html picture 011 or the seventh picture. This was achieved by repeatedly tightening the spindle bolt after use. It did not require grease. A spindle bolt will break before damaging force can occur on the crank. The ISIS method fails on several fronts and doesn't address the bearing problem, using the same old cottered crank spindle diameter and bearing cups. Besides, the spline is difficult to manufactured and solves a non existent problem. Shimano built the Octalink that has had a backlash flaw since its beginning. Shimano didn't understand that and came out with a second version with deeper splines that had the same failing as the first. The current state of the art is the overhung bearing and no pressed on cranks. Shimano using the pinch bolt design on a spline at the left crank, and Campagnolo meshing a hollow spindle with a saw toothed spline in the center. Both of these solve the torque and force problem, although the Shimano method is simpler and less expensive. What they don't do is address the BB thread forces that have required a left hand thread or extreme torque to not unscrew. The left hand thread is proof that the threads move or the thread direction would make no difference. The bearing cups are supplied with Loctite type thread retention, which does not work with such high loads. This is the current weak spot and we will have to wait and see how they work. Jobst Brandt |
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