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djase10
Guest
Excellent datz,
keep us posted as soon as they arrive.
what color are you getting?
Jase
keep us posted as soon as they arrive.
what color are you getting?
Jase
KiDD
Member
I want some!
MasterLink
Member
well he did that to me also then 4 weeks went by ..and he didn't answer his phone then i got them
hope that dont happind for u that way good luck
loquin
Well-Known Member
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djase10
Guest
The suspense is killing me...
We'll see.
MasterLink, have you pulled the bearings apart on yours to see how they are constructed?
If these are metric bearings, a set of these dual load angular contact bearings would work for the thrust loads involved:
http://www.mcmaster.com/ctlg/DisplC...1946&ScreenWidth=1680&McMMainWidth=881#scroll
Once I get the wheels, I'll take them apart and measure everything out to see what can be used.
MasterLink, have you pulled the bearings apart on yours to see how they are constructed?
If these are metric bearings, a set of these dual load angular contact bearings would work for the thrust loads involved:
http://www.mcmaster.com/ctlg/DisplC...1946&ScreenWidth=1680&McMMainWidth=881#scroll
Once I get the wheels, I'll take them apart and measure everything out to see what can be used.
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Take a look here.. Boca Bearings sells high end ceramic bearings for mountain bikes. Guess what, they are not thrust bearings either.
http://www.bocabearings.com/main1.aspx?p=showsearchforpage&cat=CLSFB&subgroup=112
http://www.bocabearings.com/main1.aspx?p=docs&id=7
http://www.bocabearings.com/main1.aspx?p=showsearchforpage&cat=CLSFB&subgroup=112
http://www.bocabearings.com/main1.aspx?p=docs&id=7
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T
turkeyssr
Guest
What is a 'thrust' bearing and why is this important? Are you saying that you can replace the 'normal' bearings in a bicycle wheel with a sealed cartridge version?
Thanks! - John
Thanks! - John
thrust bearings are built to allow side to side loads (like in the wheels of a car). The rollers run on a cone that allows both up and down force as well as side to side force.
Cross section of a tapered roller bearing (thrust bearing):
http://www.thisoldtractor.com/gtbender/mg_images/bearing_roller_tapered_a.gif
Notice that the roller sits at an angle, so that force (usually in the hundreds to thousands of lbs) can be applied to the side of the bearing as well as up and down without it failing.
Ball bearing cross section:
http://www.engineersedge.com/bearing/images/ball_bearing_tolerance.gif
Ball bearings are usually used in applications where there are mostly radial forces.
That was one of the original complaints about the mag wheels from one of the threads above.. that the bearings weren't "safe" because they are not thrust bearings. What I've found is that many bearings used in a lot of high end bike wheel applications are also this same style of cartridge ball bearing.
As far as replacing bearings, yes many bike bearings can be replaced with cartridge style ball bearings. Boca Bearings has applications for many makes of bicycles for very high end ceramic bearings (as well as normal steel bearings). They even show cross section drawings of the bearings showing that they are a normal ball bearing design.
http://www.bocabearings.com/main1.aspx?p=docs&id=7
Cross section of a tapered roller bearing (thrust bearing):
http://www.thisoldtractor.com/gtbender/mg_images/bearing_roller_tapered_a.gif
Notice that the roller sits at an angle, so that force (usually in the hundreds to thousands of lbs) can be applied to the side of the bearing as well as up and down without it failing.
Ball bearing cross section:
http://www.engineersedge.com/bearing/images/ball_bearing_tolerance.gif
Ball bearings are usually used in applications where there are mostly radial forces.
That was one of the original complaints about the mag wheels from one of the threads above.. that the bearings weren't "safe" because they are not thrust bearings. What I've found is that many bearings used in a lot of high end bike wheel applications are also this same style of cartridge ball bearing.
As far as replacing bearings, yes many bike bearings can be replaced with cartridge style ball bearings. Boca Bearings has applications for many makes of bicycles for very high end ceramic bearings (as well as normal steel bearings). They even show cross section drawings of the bearings showing that they are a normal ball bearing design.
http://www.bocabearings.com/main1.aspx?p=docs&id=7
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