how does the new un54 bb compare to the old un73 bb?
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how does the new un54 bb compare to the old un73 bb?
it looks like i'm going to have to get a un 54 bb as my new cranks don't work with my old bb suprisingly enough.
what should i expect as far as quality and weight?
is there any place that still has the old un73?
what should i expect as far as quality and weight?
is there any place that still has the old un73?
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You'll get huge weight saving because UN54 is plastic.
But overall it's a good bb.
www.biketoolsetc.com has high quality Tange bottom brackets:
The Tange LN79 Series bottom brackets feature an aluminum alloy body & cups, and a forged steel spindle with standard 8mm crank bolt threads. High quality and lightweight at an affordable price. 220 grams! Made in Japan.
But overall it's a good bb.
www.biketoolsetc.com has high quality Tange bottom brackets:
The Tange LN79 Series bottom brackets feature an aluminum alloy body & cups, and a forged steel spindle with standard 8mm crank bolt threads. High quality and lightweight at an affordable price. 220 grams! Made in Japan.
Last edited by Barabaika; 06-14-08 at 08:50 PM.
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You'll get huge weight saving because UN54 is plastic.
But overall it's a good bb.
www.biketoolsetc.com has high quality Tange bottom brackets:
But overall it's a good bb.
www.biketoolsetc.com has high quality Tange bottom brackets:
The UN54 is still metal, the only plastic (phenolic) parts is the non-drive side cup. The 54 combines the weight reduction of the 73 (hollow spindle) with the pricepoint of the 53. Basically Shimano combined the two lines into one.
Why do you say your crank doesn't work with the old bb?
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This is Africa, 1943. War spits out its violence overhead and the sandy graveyard swallows it up. Her name is King Nine, B-25, medium bomber, Twelfth Air Force. On a hot, still morning she took off from Tunisia to bomb the southern tip of Italy. An errant piece of flak tore a hole in a wing tank and, like a wounded bird, this is where she landed, not to return on this day, or any other day.
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it's not the right spindle lenght. the old cranks were the m480 and the new are the m460. i couldn't even shift into the small ring. :/
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I heard that Tange made bbs for Shimano.
What's so special about bb? When it starts to creak, you just put a new one. They are cheap.
Yes, there is always something that has higher quality.
But in the bike industry it means exotic materials and lighter weight.
What about this bb for $90?
FSA Cartridge Bottom Bracket
The Ultimax Carbon/Titanium Cartridge Bottom Bracket features a carbon fiber body, cold forged aluminum cups, and a hollow titanium spindle with standard 8mm crank bolt thread. 68mm (English) shell width, 110.5mm spindle length, 170 grams. Made in Taiwan.
What's so special about bb? When it starts to creak, you just put a new one. They are cheap.
Yes, there is always something that has higher quality.
But in the bike industry it means exotic materials and lighter weight.
What about this bb for $90?
FSA Cartridge Bottom Bracket
The Ultimax Carbon/Titanium Cartridge Bottom Bracket features a carbon fiber body, cold forged aluminum cups, and a hollow titanium spindle with standard 8mm crank bolt thread. 68mm (English) shell width, 110.5mm spindle length, 170 grams. Made in Taiwan.
Last edited by Barabaika; 06-14-08 at 11:46 AM.