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TruVativ Powerspline Bottom Bracket. Time to upgrade?

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TruVativ Powerspline Bottom Bracket. Time to upgrade?

Old 05-28-22, 09:33 PM
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TruVativ Powerspline Bottom Bracket. Time to upgrade?

I have a 15 year old MTB with a TruVativ Powerspline Bottom Bracket that needs replacing.

Should I simply replace it or is it time to upgrade the BB and crank to more modern tech?
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Old 05-29-22, 06:47 AM
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If the crank arm tapered splined holes are in good shape and the crankset otherwise does what you like, why replace it? If the rings are well worn and might need replacement soon than the cost of a new crankset might be less than the 3 rings... Andy
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Old 05-29-22, 07:18 AM
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What benefit do you hope to enjoy by updating to more modern tech?
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Old 05-29-22, 10:44 AM
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The rings are replaceable (now singular ring) so that's nice and inexpensive.
and the crank arms are in descent shape and also inexpensive to procure.

I just assumed the more modern BB's were an upgrade with durability and maintenance.
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Old 05-30-22, 06:41 AM
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Originally Posted by CrimsonEclipse
I just assumed the more modern BB's were an upgrade with durability and maintenance.
No. Vintage cup and cone bottom brackets are durable and servicable. Modern cartridge bottom brackets are consumable items. When it starts giving problems, you just replace it.
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Old 05-30-22, 12:24 PM
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Originally Posted by JohnDThompson
No. Vintage cup and cone bottom brackets are durable and servicable. Modern cartridge bottom brackets are consumable items. When it starts giving problems, you just replace it.
Yeah, this is a cartridge.
Still, it's only $20-30 a pop but the choices of quality doesn't exist. There are only one or 2 manufacturers for the power spline.
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Old 05-31-22, 05:45 AM
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Originally Posted by CrimsonEclipse
Yeah, this is a cartridge.
Still, it's only $20-30 a pop but the choices of quality doesn't exist. There are only one or 2 manufacturers for the power spline.
Phil Wood offers some Power Spline cartridges.
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