› Forums › Barracuda Stuff › Restoration Projects › A2R Bottom Bracket specs? (68 x ???)
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- June 15, 2014 at 12:34 am
Have you measured it? My 93 A2R measured 111.72mm. I bought a Shimano 110mm 55 series bottom bracket for it. It had an actual spindle length of 111.70mm.- June 15, 2014 at 12:44 am
I don’t have the old BB… so I can only measure the shell.
Thanks for the info – I’ll try a 110 and 113 and see what kind of chain line I get.- June 22, 2014 at 1:05 pm
All my 7 speed Barracuda’s have the 111.72mm length spindels. Not sure about the 8 speed. I did try a 113mm on my A2R but the front derraileur seemed way out of what i would consider normal adjustment range.- June 24, 2014 at 3:22 am
It’s amazing how different frames can be that utilize similar materials in frame construction. Case in point, my ’88 Schwinn Cimarron also has a 68mm bottom bracket shell, I was using a swaged road crank with a new 8 speed 32T freewheel, I had to track down a 130mm spindle bottom bracket to clear the chain stays because the frame was not dimpled like all the newer ’90’s stuff. Luckily, I found a NOS Tioga loose ball and cup bottom bracket that worked out perfectly. I’m running all first generation Shimano “Deerhead” XT components and thankfully the old 6 speed stuff was so overbuilt that I was able to set the limit screws and make it all work. I had to shorten up the front derailleur since I was using a double instead of a triple (but don’t forget the extra wide spindle) and let the rear screws way out to get all 8 gears on the freewheel. I’ll post some photos but last weekend I ripped the drivetrain down and got rid of the STI “brifters” and replaced them with bar end shifters. When I started out racing everything was “friction” and then the manufacturers went to “index” with everything. These days I find myself returning to friction with all my retro builds. I also got rid of the Ritchey 1.95 gumwall tires and replaced them with gray Schwalbe 2.3 Fat Frank tires… can you cay balloon goodness? I’ll probably start a thread explaining the customization and rebuild from 3×6 stock in Schwinn green with gold lettering to 2×8 cream with NOS gray waterslide decals… the gray cable housing, gray “Batwing” brake levers, and the gray tires really look quite tasty! I also swapped out the zero offset Thomson seat post for a set back Thomson post to get some additional versatility in the cockpit. For now, here is the original rebuild…
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