Messages

1

The Bike Shop / Spanish BB Length

« on: April 10, 2012, 02:13:10 AM »

yeap, did exactly that with the new bb but instead i installed a 1mm thick spacer in the frame cause the tube spacer is at 50mm and bearings are 18mm for both, my frame bb length is 68mm, so my non drive side bearing sticks out a lil (not even noticeable), tighten them up as tight as i could and it still spins really smoothly, my previous problem was definately a tube spacer issue, glad everything is sorted now!

2

The Bike Shop / Spanish BB Length

« on: April 09, 2012, 11:56:28 PM »

DING DING DING

Of the standards we do have a large percent of them go ignored by companies unfortunately. In the end this mainly hurts the end user as we're the ones who get to try to figure out solutions or buy different parts in order to ride.

exactly! like how my profile hub required two shims instead of one hahaha

3

The Bike Shop / Spanish BB Length

« on: April 09, 2012, 11:54:53 PM »

Unless its been changed, the bearing seat depth is called out at 10mm, if I remember correctly. So taking that into account, the spacer is the correct width. Are your bearings flush with the shell or are they sitting below the face by 1mm?

What did you use to install the bearings?

TOUCHE! exactly what i thought as well, i had the assumption that once i tighten the cranks down, the bearings would be pushed in to accomodate the 'extra' 1mm on each side but that's not the case thou.

I agree with the lack of standards in bmx, funny how when i got a new spanish bb set from a local company last night, the tube spacer is 50mm compared to eclat's 48mm....

I've ridden and work on bikes for ages now but encountering a problem with bb lengths and bearings are definately a first to me, thought i had all of these settled when the euro bb got phased out eventually but nooooo... hahahaha :confused:

4

The Bike Shop / Spanish BB Length

« on: April 08, 2012, 10:43:20 PM »

pretty sure the tube spacer has nothing to do with how good your bearings work,always thought is was to protect the middle of your spindle from rust. Like how the inside of your frame will rust a little and obviously moisture could get to the spindle and rust it making it near impossible to get the spindle back out. happened to my buddy once with profiles and had to drill the spindle out but he also never took care of the bike and left it outside im sure.

hahahahhahah lol it's to actually allow your cranks to be tighten enough and the inner races of the bearings have something to press on with, to ensure your bearings won't get crushed radially/axially....:dunno:

5

The Bike Shop / Spanish BB Length

« on: April 08, 2012, 09:59:08 PM »

yeah man, true that, wished i had actually double checked on the measurements!

6

The Bike Shop / Spanish BB Length

« on: April 08, 2012, 09:51:31 PM »

Hi Everyone,
Yesterday mid way through a dirt session at my local spot, my bike made a loud cracking sound originating from the BB area, my bb has been making creaking a couple of days ago.

I'm running a two week old Eclat Spanish BB, prior to this, i have never had any issues with my BB prematurely 'shittin the bed', i couldn't think of what i did wrong installation wise.

I then took my entire Cranks/BB off and saw that the seals on my bearings are all knackered. I then measured the tube spacer (48mm), both bearings (18mm) and my bb length is 68mm.

This comes to my question, why did they provide a tube spacer that isn't long enough for a standard BB Length? my conclusion is that I actually had to install a 2mm thick crank spacer inbetween my tube spacer and bearing on the inside of the frame?

I reckon what caused the seals to be knackered was cause there's a 2mm space in the BB shell that was allowing the tube spacer to be moving around?

Who else have encountered a similar problem? pretty bummed cause i waited ages for the eclat bb to be delivered to me and i have to the same again...