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Author Topic: inner hub spacer  (Read 1153 times)

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Offline Johnny5

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inner hub spacer
« on: March 23, 2017, 11:16:30 PM »
I was breaking down a older cb750 front wheel to change out the bearings and found the inner spacer missing. Can I find and use any spacer that measures from the inside two bearings? I would hate to have to source and full hub only for a spacer.
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Offline gtmdriver

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Re: inner hub spacer
« Reply #1 on: March 24, 2017, 12:11:00 AM »
It really depends on whether the spacer is sized so that the balls are centralised in their races or whether it is slightly smaller so that they are pre-loaded slightly.

I think my choice would be to machine the spacer so that the ball bearings are exactly centred in the outer bearing races when it is all fitted together.
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Offline Johnny5

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Re: inner hub spacer
« Reply #2 on: March 24, 2017, 04:54:26 AM »
Thanks for the reply. I'll see what spacers I can find to possible make it work.
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Offline flybox1

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Re: inner hub spacer
« Reply #3 on: March 24, 2017, 01:33:26 PM »
Many on ebay....
#44620-300-020
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

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Offline Johnny5

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Re: inner hub spacer
« Reply #4 on: March 24, 2017, 02:03:27 PM »
Sorry, typo. This is for my CB450. I know, wrong forum but same principles apply.

Quote from: flybox1 on March 24, 2017, 01:33:26 PM
Many on ebay....
#44620-300-020
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www.kerosenecycles.com
1971 CB350
1973 CB350F
2006 Harley Springer Classic

Offline flybox1

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Re: inner hub spacer
« Reply #5 on: March 24, 2017, 02:33:10 PM »
Quote from: Johnny5 on March 24, 2017, 02:03:27 PM
Sorry, typo. This is for my CB450. I know, wrong forum but same principles apply.

Quote from: flybox1 on March 24, 2017, 01:33:26 PM
Many on ebay....
#44620-300-020

its the same part/Part #  ;)
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Johnny5

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Re: inner hub spacer
« Reply #6 on: March 24, 2017, 02:41:38 PM »
I have the drum hub. :(

Quote from: flybox1 on March 24, 2017, 02:33:10 PM
Quote from: Johnny5 on March 24, 2017, 02:03:27 PM
Sorry, typo. This is for my CB450. I know, wrong forum but same principles apply.

Quote from: flybox1 on March 24, 2017, 01:33:26 PM
Many on ebay....
#44620-300-020

its the same part/Part #  ;)
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www.kerosenecycles.com
1971 CB350
1973 CB350F
2006 Harley Springer Classic

Offline flybox1

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Re: inner hub spacer
« Reply #7 on: March 24, 2017, 02:43:03 PM »
what year is your 450?
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Johnny5

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Re: inner hub spacer
« Reply #8 on: March 24, 2017, 02:54:21 PM »
Quote from: flybox1 ld ink=topic=164589.msg1899631#msg1899631 date=1490391783
what year is your 450?

74. Wheel is from a 72 CL450.
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www.kerosenecycles.com
1971 CB350
1973 CB350F
2006 Harley Springer Classic

Offline flybox1

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Re: inner hub spacer
« Reply #9 on: March 24, 2017, 02:59:14 PM »
Quote from: Johnny5 on March 24, 2017, 02:54:21 PM
Quote from: flybox1 ld ink=topic=164589.msg1899631#msg1899631 date=1490391783
what year is your 450?

74. Wheel is from a 72 CL450.
Started with a CB750, then it was a CB450, now its a 72 CL450....wth Johnny!  ::)
Your first post should have read something like Spacer info needed for a CL450.   Details man  >:(
Good luck finding a spacer.
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Johnny5

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Re: inner hub spacer
« Reply #10 on: March 24, 2017, 03:39:30 PM »
Haha! I'm sorry....dealing with insomnia as of late....

Quote from: flybox1 on March 24, 2017, 02:59:14 PM
Quote from: Johnny5 on March 24, 2017, 02:54:21 PM
Quote from: flybox1 ld ink=topic=164589.msg1899631#msg1899631 date=1490391783
what year is your 450?

74. Wheel is from a 72 CL450.
Started with a CB750, then it was a CB450, now its a 72 CL450....wth Johnny!  ::)
Your first post should have read something like Spacer info needed for a CL450.   Details man  >:(
Good luck finding a spacer.
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www.kerosenecycles.com
1971 CB350
1973 CB350F
2006 Harley Springer Classic

Offline SOHC4 Cafe Racer Fan

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Re: inner hub spacer
« Reply #11 on: March 24, 2017, 04:27:25 PM »
I had someone install my rear wheel without the spacer and it was a bad experience.  One of the bearings pushed the retainer and ripped out all the threads.  The wheel went  catawampus and could have seized. 
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
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"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

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Offline Johnny5

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Re: inner hub spacer
« Reply #12 on: March 24, 2017, 04:48:17 PM »
Yeah, I'll definitely not go without adding a spacer.

Quote from: CB750 Cafe Racer Fan on March 24, 2017, 04:27:25 PM
I had someone install my rear wheel without the spacer and it was a bad experience.  One of the bearings pushed the retainer and ripped out all the threads.  The wheel went  catawampus and could have seized.
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1971 CB350
1973 CB350F
2006 Harley Springer Classic
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