ryanc Posted January 2, 2011 Report Share Posted January 2, 2011 i am buying a new bottom bracket soon and im not sure if i should get a square taper or a isis could i get some advice on what one to get. Quote Link to comment Share on other sites More sharing options...
BradJohnson Posted January 2, 2011 Report Share Posted January 2, 2011 i am buying a new bottom bracket soon and im not sure if i should get a square taper or a isis could i get some advice on what one to get. i had isis on my bike and it rounded the pedal arm really easy if i were you id get square+ there cheap to fix if anything goes wrong Quote Link to comment Share on other sites More sharing options...
Dave! Posted January 2, 2011 Report Share Posted January 2, 2011 (edited) ISIS are stiffer, and are suppose to be better because they have the grooved shape. But they are more expensive. Although I've always just used square taper BBs', mainly because it was cheaper. But over the years I've found they are just as good in the long run, especially if you get a decent one with good bearings. I've had my Shimano UN53 for about 5 years now....no problems at all. Hope this helps. Edited January 2, 2011 by Dave! Quote Link to comment Share on other sites More sharing options...
Miles Mallinson Posted January 2, 2011 Report Share Posted January 2, 2011 Isis but obviously if your getting a new bottom bracket it needs to be the same as your cranks. Quote Link to comment Share on other sites More sharing options...
Shop_Guy Posted January 9, 2011 Report Share Posted January 9, 2011 Isis bottom brackets are much better then square taper, the reason his crank are rounded was he didn't keep it tight. In my shop experience I have seen this many times if your crank becomes loose get off your bike and walk. The little bit of laziness inside will say I'm only 3 blocks away, but that's all it takes to start the damage. The isis bottom bracket has many splines giving more power to the drive terrain were a square is just a four side spline. There will be controversy for sure but your money is better spent in isis. Get yourself a user serviceable bottom bracket like a rest titanium you get a super lite bottom bracket for 125$ I currently own the reset ti bottom bracket and no issues, It has bearings that can be replaced if anything happens o you pay the good money for something nice and when it goes bad you shell out a couple$ per bearing reinstall and your back to the golden days. Hope this helps. Shop Guy. Quote Link to comment Share on other sites More sharing options...
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