Global-flat.com Board

English => Parts & Bikes => Topic started by: rawchild on August 25, 2016, 03:17:40 AM

Title: Bottom brackets
Post by: rawchild on August 25, 2016, 03:17:40 AM

Ok...I have used American, mids and Euros...so why do you have a spacer or bushing that fits in-between the bearings?  Is it necessary to install it?   Can you go without it? Thanks for info guys!

Title: Re: Bottom brackets
Post by: Paradoxium on August 25, 2016, 06:40:30 AM

The tube spacers function is to take the side load out of the bearings when you tighten up the crank bolts. It makes bearings last longer.

Title: Re: Bottom brackets
Post by: metalbmxer on August 26, 2016, 12:06:23 AM

Let me give you a tip:
You can stop using them (unless it's a Euro)

They create more problems than they prevent and end up adding unnecessary weight (some are steel vs aluminum)

I've noticed bearing wobble that went away once I took mine out. And in case you are wondering, have not had a single bearing failure in 2 years. Neither me nor another long time pro who rides for Hoffman (and he has been running his cranks without the spacer for YEARS)

Title: Re: Bottom brackets
Post by: rawchild on August 29, 2016, 03:58:41 AM

Ok I'll give that a try then thanks.

Title: Re: Bottom brackets
Post by: JUGGARNAUT on August 30, 2016, 01:08:03 AM

Whos the long time pro?

Title: Re: Bottom brackets
Post by: rawchild on August 30, 2016, 03:15:53 AM

Have you ever done that juggs?

Title: Re: Bottom brackets
Post by: metalbmxer on August 30, 2016, 06:50:50 AM

Quote from: JUGGARNAUT on August 30, 2016, 01:08:03 AM

Whos the long time pro?

It's Art Thomason

Title: Re: Bottom brackets
Post by: Peter Hollinger on August 30, 2016, 12:16:06 PM

If you are running pinch-bolt style cranks likes Primo Powerbites then I can't see any problem with removing the spacer.
However if you are on 48 spline cranks like Profile then I would definitely leave it in.

Title: Re: Bottom brackets
Post by: efxman on August 31, 2016, 02:28:37 AM

As far as adding more weight I doubt you could ever tell a difference, I mean seriously we are talking mere ounces if not grams here.

Title: Re: Bottom brackets
Post by: metalbmxer on August 31, 2016, 05:29:29 AM

Quote from: efxman on August 31, 2016, 02:28:37 AM

As far as adding more weight I doubt you could ever tell a difference, I mean seriously we are talking mere ounces if not grams here.

Depends, the steel version of the spacer weighs about twice as much as the aluminum version. In a world where people will pay a premium for lighter parts, it's a no-cost no-brainer option.