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Sportster Motorcycle Transmission, Clutch, Primary & Secondary Drive Transmission, Clutch and primary or secondary drive problems, advice, and/or how tos.

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  #11  
Old 26th April 2019
Bluto Bluto is offline
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Quote:
Originally Posted by Davo_137 View Post
Better than the XR? That depends on how you look at it, the XR has that spring setup, I guess you could call it a Cush drive, it soaks up shock loads that cause wear to the gearbox.
True, wish the XL had that spring setup in the clutch basket too...but FWIW it is possible to install the Japan market cush drive on the wheel pulley to get the same effect more or less, from what I've read it is worthwhile and not too expensive.
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  #12  
Old 26th April 2019
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I think the Japanese XRs have that pulley as well. I wonder why only the Japan models got them?
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  #13  
Old 26th May 2019
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friction modifiers are dangerous inside the primary...
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  #14  
Old 26th May 2019
Tomcatt Tomcatt is offline
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Originally Posted by Nibelungen View Post
friction modifiers are dangerous inside the primary...
Explain that.
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  #15  
Old 26th May 2019
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Originally Posted by Tomcatt View Post
Explain that.
discussed a lot in many forums...
issue to use car oil on motorbikes...
since some of them can contain friction modifiers
mostly composed of teflon or graphite micro particles... they change the normal friction properties of materials...
good sometimes for sliding issues on old cylinders... but wet clutches were ruined by them... since they loose proper friction properties...

Google a bit for more info...
in your shoes i would change oil in the primary...
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  #16  
Old 26th May 2019
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Quote:
Originally Posted by Nibelungen View Post
discussed a lot in many forums...
issue to use car oil on motorbikes...
since some of them can contain friction modifiers
mostly composed of teflon or graphite micro particles... they change the normal friction properties of materials...
good sometimes for sliding issues on old cylinders... but wet clutches were ruined by them... since they loose proper friction properties...

Google a bit for more info...
in your shoes i would change oil in the primary...
Do a bit more research. That applies to the "energy conserving" ENGINE oils with friction modifiers when used in common engine / transmissions with wet clutches. They're not meant for that application. There are JASO cert oils for that.

ALL of the oils that have been in my primary have had friction modifiers in them (almost all atf's have friction modifiers for controlled clutch pack / band slip) with the exception of the Red Line NS gear oil. For that the procedure (if you don't want chatter/squeal in your limited slip which is a wet clutch) is to add their friction modifier an once at a time until the chatter/squeal goes away. You CAN add too much and end up with a slipping clutch. Red Lines recommended (for our Sportsters) MT90 has friction modifiers.

I now have a clutch that works better without squeal. No slip when it shouldn't. I think I'll leave it that way.
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  #17  
Old 26th May 2019
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i simply told you facts
if you are over 18 could do what you want...
ride safe
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  #18  
Old 26th May 2019
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Just to get this thread back on track...

I have written a page for this configuration into the Sportsterpedia:

'91-later Alternative Clutch Pack Using XR1200 Parts

Bluto - Please read over that page and comment here...

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  #19  
Old 27th May 2019
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Toejam503 Toejam503 is offline
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I always thought "friction modifiers" was a generalization term they use for the varying additives they put in oil, trans fluid and gear oil, etc. I got this off the www.

Friction Modifiers/ Machinery Lubrication

["The purpose of a friction modifier varies based on the application. In a combustion engine, the goal is to lower the amount of friction, thereby gaining fuel economy. In clutches, automatic transmissions and industrial applications, the aim is not simply to control friction in order to maximize efficiency but to reduce slippage.

To a degree, this seems a bit counterintuitive, since a lubricant’s objective is to reduce friction and wear. However, there are many situations in which a certain amount of traction friction is required for equipment to operate properly. The friction modifiers used in these applications are not intended to increase or decrease friction but to act differently under specific shear conditions.

This essentially smooths the transition from a dynamic condition to a static condition, such as during a gear change in a transmission or the engagement of a clutch."]

Now back to the regularly scheduled thread...............
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  #20  
Old 27th May 2019
Bluto Bluto is offline
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Quote:
Originally Posted by IXL2Relax View Post
Just to get this thread back on track...

I have written a page for this configuration into the Sportsterpedia:

'91-later Alternative Clutch Pack Using XR1200 Parts

Bluto - Please read over that page and comment here...

IXL _______ >>>> My Motorcyle Chronicles Are Here <<<<
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Looks good, would only add that using the common fix of stock HD two steel plus one friction replacement for the spring plate also often squeals and has abrupt clutch takeup...that experience is what motivated me to go with the XR1200/Buell XB clutch parts, not problems with an an aftermarket clutch.
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