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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 03-18-11, 04:43 AM   #1
ironpuppy13
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Any word on sinz pro ti bottom bracket?

http://www.jensonusa.com/store/produ...m+Bracket.aspx

I'm thinking about getting this bb for my kilo tt. does anyone know anything about this or would you recommend any other square taper bb that would fit a tt
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Old 03-18-11, 05:33 AM   #2
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Does your current bb need replacing? That one seems like overkill if you ask me.
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Old 03-18-11, 06:10 AM   #3
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Originally Posted by ironpuppy13 View Post
...would you recommend any other square taper bb that would fit a tt
http://www.jensonusa.com/store/produ...m+Bracket.aspx

A $20 UN54 will be just fine.
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Old 03-18-11, 07:57 AM   #4
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Are you still running the stock cranks? The stock cranks on the Kilo TT (Truvativ Touro) are not square taper. They're Powerspline.

As others have said, a $100 bottom bracket is way overkill. Tange and Shimano make quality square taper bottom brackets in the $20-30 range.

I run a Shimano UN54, and despite having been beaten through a couple winters and having a plastic non-drive side cup, its a good buy for $20.

Edit: I just saw your other post in the carbon crank thread. I also run 75s with the Shimano UN54, despite the fact that the BB is JIS taper and the cranks are ISO taper. Another option in the "cheap" price range is the Protype 75 BB:

http://www.benscycle.net/index.php?m...oducts_id=9460

Last edited by yummygooey; 03-18-11 at 08:09 AM.
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Old 03-18-11, 09:28 AM   #5
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yes i badly need a replacement bottom bracket. the one i have is totally shot and grinds really bad. and yeah it is a little overkill but i would like to ride on a carpet that i don't ever have to worry about replacing for a long time. and no i'm not going to use the stock crank, i'm looking at replacing that as well.
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Old 03-18-11, 09:46 AM   #6
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maybe i'll just way overkill and get a phil wood
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Old 03-18-11, 09:57 AM   #7
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I would suggest considering the IRD QB-75. It's got two alloy cups, so it is better than the UN54 which ships with one plastic cup, but it is not as excessive as the OP's 100-dollar BB.

http://store.interlocracing.com/qbqubobr.html

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Old 03-18-11, 10:22 AM   #8
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Putting a Titanium BB on a Kilo TT is pretty much like ordering a Diet Coke to go with your Super Sized Big Mac value meal.
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Old 03-18-11, 10:25 AM   #9
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maybe i'll just way overkill and get a phil wood
what by spending another whole $5 or so? Sounds like the right thing to do to me.
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Old 03-18-11, 10:37 AM   #10
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ironpuppy13,

Based on your posts about carbon cranks and ti BBs, it seems like you are trying to lighten your bike...by throwing money at it.

This is NOT the way to do it. Putting carbon cranks and a Ti BB on a Kilo is like an overweight bike racer putting titanium bolts on his bike to make hill climbs easier. There is a huge elephant in the room that isn't being addressed here...the KILO TT. Carbon cranks and a ti BB won't put a dent into how heavy that bike feels. It's the 4130 (or whatever it is) steel frame that's heavy.

If you want a light bike, start with a light frame, then light wheels, THEN look for lighter components.

The frame doesn't have to be carbon. You can find a decently light aluminum frame for not a lot of money. You can buy/build some lighter-than-normal wheels for a moderate amount.

The key is to have an idea of where you want to go with this, save money, lay a foundation, and make it a long term project.

You don't have to buy the lightest of every part, either. There is a point of diminishing returns when you buy a-la-carte.

I know all of this because (years ago) I set out to make the Lightest Flatland Bike project bike for RideUK (BMX mag) and made a super-light bike that was featured in the mag. It had a Ti BB. It was freakishly light and not fun to ride.
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Old 03-18-11, 12:40 PM   #11
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You can also get a lighter steel frame.
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