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2 Weeks Ago
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XL FORUM TEAM MEMBER
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Join Date: Oct 2008
Posts: 1,149 Sportster/Buell Model: Sportster Sportster/Buell Year: 1990 Sportster/Buell Model #2: Sportster Sportster/Buell Year #2: 1975 Other Motorcycle Model: Buell S1 W Other Motorcycle Year: 1998
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1990 4 speed clutch bearing options 6009Z
I have to rebuild the Trans and while I'm in, I'd like to change the 6009Z bearing.
Yes the NUP1009 can be a solution but I don't want to deal with fake China made bearings and reading the archive I see it's not a proven solution.
SO I'll stay with a common single shield 6009Z bearing.
My concern is the Internal clearance .
I found a SKF EXPLORES . It's C3 bearing clearance.Being C3 means that the bearing has room for expansion.
It's C3 (with additional clearance) good for a bearing that needs to be very stable (to avoid magnets contact with stator)?
__________________
1990 Sportster Axtell 90 ci, CP Carrillo 3.875 30° deg pistons,STD Heads, 615V2 RedShift cams, HSR48,
Carrillo 6.938 rods (All HammerPerf)
Hammer Billet Sledge air filter
Hammer Billet Manifold.
160/60ZR17 rear on Akront 5.50" Alu rim
100/90-19 front on Akront 2.50" new Alu rim
YSS 13.75 rear shocks
1975 XLH almost stock
1998 Buell S1W almost stock
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2 Weeks Ago
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Custom Bike Builder
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Join Date: Mar 2015
Location: Europe Slovenia
Posts: 2,358 Sportster/Buell Model: sportster 1200 Sportster/Buell Year: 1986
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If I remember right, c3 is tighter. I have bearing like this in mine with no problems.
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1 Week Ago
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XL FORUM TEAM MEMBER
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Join Date: Oct 2008
Posts: 1,149 Sportster/Buell Model: Sportster Sportster/Buell Year: 1990 Sportster/Buell Model #2: Sportster Sportster/Buell Year #2: 1975 Other Motorcycle Model: Buell S1 W Other Motorcycle Year: 1998
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Quote:
Originally Posted by juzyHD
If I remember right, c3 is tighter. I have bearing like this in mine with no problems.
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C3 should be with ADDITIONAL clearance (comparing C2 and C1) .
From Internet:
"These are the 5 most common C codes for internal bearing play: C1, C2, C3, C4 and C5. If a bearing has a C code, it offers extra internal clearance. C1 offers the least extra clearance, C5 offers the most extra clearance. The extra margin C3 offer is considered 'normal'."
and
"Internal clearance being C3 means that the bearing has room for expansion if needed between the races of the bearing, whilst holding the outer ring and moving the inner ring in a radial movement you will detect a little amount of play between the two rings."
My concern is IF probably the C1 clearance can be better for this kind of Bearing.
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1 Week Ago
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Custom Bike Builder
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Join Date: Mar 2015
Location: Europe Slovenia
Posts: 2,358 Sportster/Buell Model: sportster 1200 Sportster/Buell Year: 1986
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A ok, my bad. Maybe I instaled C2 than... I'll check in my mail if I bought it online and I'll let you know.
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1 Week Ago
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XL FORUM TEAM MEMBER
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Join Date: Oct 2008
Posts: 1,149 Sportster/Buell Model: Sportster Sportster/Buell Year: 1990 Sportster/Buell Model #2: Sportster Sportster/Buell Year #2: 1975 Other Motorcycle Model: Buell S1 W Other Motorcycle Year: 1998
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Quote:
Originally Posted by juzyHD
A ok, my bad. Maybe I instaled C2 than... I'll check in my mail if I bought it online and I'll let you know.
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The problem is that not always the C specs are specified by the manifacturer.
If I take the OEM number ( HD 36799-84) there is no clearance specification.
the HD 36799-84 is a 6009Z (single shield). and OFTEN the 6009 bearing are available with different clearance options (not always).
Last edited by conv90; 1 Week Ago at 19:59..
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1 Week Ago
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Custom Bike Builder
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Join Date: Mar 2015
Location: Europe Slovenia
Posts: 2,358 Sportster/Buell Model: sportster 1200 Sportster/Buell Year: 1986
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Quote:
Originally Posted by conv90
The problem is that not always the C specs are specified by the manifacturer.
If I take the OEM number ( HD 36799-84) there is no clearance specification.
the HD 36799-84 is a 6009Z (single shield). and OFTEN the 6007 bearing are available with different clearance options (not always).
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That probably means, that it is some standard clearance. I think that it everything is OK inthere it should standard clearance bearing do the job just fine...
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