Omnium crankset installation question
#1
Senior Member
Thread Starter
Join Date: Mar 2011
Location: Seattle
Posts: 89
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Omnium crankset installation question
Hi. I tightened the 8mm hex bolt to the torque in the instructions (48-54 NM), and now the bearings are really stiff. When I try to spin the cranks, they move but they don't spin freely. Is that normal? Or should I just tighten them until they feel right, like with any other bearing assembly? Thanks.
#2
Senior Member
Thread Starter
Join Date: Mar 2011
Location: Seattle
Posts: 89
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I figured it out. It's because I was using a spacer on the drive side. My new question, then, is if it is possible to adjust the chainline with this crankset.
#6
Paste Taster
Join Date: May 2006
Location: Sacramento, CA
Posts: 4,392
Bikes: , Jury Bike, Moto Outcast 29, Spicer standard track frame and spicer custom steel sprint frame.
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
one you shouldn't have to use a spacer unless your frame is weird
two the torque is a measurement of force not depth
three the bearing seals are extremely stiff on these cranks until you put a few miles on them
four try it without the spacer it will probably work fine
two the torque is a measurement of force not depth
three the bearing seals are extremely stiff on these cranks until you put a few miles on them
four try it without the spacer it will probably work fine
#7
Senior Member
Thread Starter
Join Date: Mar 2011
Location: Seattle
Posts: 89
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
That's true, but I'm too neurotic to ignore it.
The omniums are designed so that the left crank arm butts up against the splined part on the spindle, so I don't see any way to use a spacer without putting too much pressure on the bearings.
The omniums are designed so that the left crank arm butts up against the splined part on the spindle, so I don't see any way to use a spacer without putting too much pressure on the bearings.
#9
Your cog is slipping.
Best of luck with your neurosis.
Last edited by Scrodzilla; 07-14-12 at 11:25 AM.
#11
Senior Member
Thread Starter
Join Date: Mar 2011
Location: Seattle
Posts: 89
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
#12
Still kicking.
#13
Senior Member
Thread Starter
Join Date: Mar 2011
Location: Seattle
Posts: 89
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
That is the one advantage that I hadn't considered about square taper cranks, being able to change the chainline.
#14
Still kicking.
It's the reason I won't run a truvativ/sram crank.
You have one size bearing in one cup, a different size bearing in the opposite cup, on a fixed application if you are a bit of an animal on the cranks the gxp setup will last 1/2 as long as a good quality square tapered setup. If you are lighter on the cranks it will last the same amount of time as a comparable setup, sugino 75/DA Track/Record Track.
You have one size bearing in one cup, a different size bearing in the opposite cup, on a fixed application if you are a bit of an animal on the cranks the gxp setup will last 1/2 as long as a good quality square tapered setup. If you are lighter on the cranks it will last the same amount of time as a comparable setup, sugino 75/DA Track/Record Track.
__________________
Appreciate the old bikes more than the new.
Appreciate the old bikes more than the new.
#15
Senior Member
Join Date: Sep 2006
Location: Gnv, FL
Posts: 1,890
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
It's the reason I won't run a truvativ/sram crank.
You have one size bearing in one cup, a different size bearing in the opposite cup, on a fixed application if you are a bit of an animal on the cranks the gxp setup will last 1/2 as long as a good quality square tapered setup. If you are lighter on the cranks it will last the same amount of time as a comparable setup, sugino 75/DA Track/Record Track.
You have one size bearing in one cup, a different size bearing in the opposite cup, on a fixed application if you are a bit of an animal on the cranks the gxp setup will last 1/2 as long as a good quality square tapered setup. If you are lighter on the cranks it will last the same amount of time as a comparable setup, sugino 75/DA Track/Record Track.