A2R Bottom Bracket specs? (68 x ???)

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Hergules
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A2R Bottom Bracket specs? (68 x ???)

Post by Hergules »

Anyone know what size BB a 1994 A2R takes?
Shell is 68mm but I don't know the spindle length.
It uses a Sugino Impel 300 crank.
Thanks - Hergules
My Rides:
1993 A2X (14"), A2L (14")
1994 A2T (16"), A2X (16"), A2R (16")
1995 XX Team (14")

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mixalive
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Re: A2R Bottom Bracket specs? (68 x ???)

Post by mixalive »

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.
93 A2R blue/white 14" Craigslist Austin, on the cheap
94 A2M silver/white 14" Cenna's Cycles SA, original owner
94 Cuda Comp purple/white 14" won on Ebay
95 XX Team gold/white 14" Craigslist Memphis

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Hergules
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Re: A2R Bottom Bracket specs? (68 x ???)

Post by Hergules »

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.
My Rides:
1993 A2X (14"), A2L (14")
1994 A2T (16"), A2X (16"), A2R (16")
1995 XX Team (14")

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mixalive
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Re: A2R Bottom Bracket specs? (68 x ???)

Post by mixalive »

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.
93 A2R blue/white 14" Craigslist Austin, on the cheap
94 A2M silver/white 14" Cenna's Cycles SA, original owner
94 Cuda Comp purple/white 14" won on Ebay
95 XX Team gold/white 14" Craigslist Memphis

neo_pop_71
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Re: A2R Bottom Bracket specs? (68 x ???)

Post by neo_pop_71 »

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 3x6 stock in Schwinn green with gold lettering to 2x8 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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