250ED clutch plates

[Hosk1956]

Does anybody have a minimum clutch plate thickness figure available?

Wayne from Oz

[Bullfrog]

Wayne, I'm sorry no one has any info for you. I don't have any of the large bore Hodies, so I can't help - no parts to measure either new or used.
Ed

[Darrell]

I have it!

From the owner's handbook. Frictional plate thickness: 2.25mm

Hope you can find some if you need them.

[Hosk1956]

That is the new plate thickness Darrell. Mine have measured at 2.1mm to 2.16mm thick, but can't find a minimum measurement.
I have been going to find data for Yamaha (or Honda, Suzuki etc) plates and see if they have a max and min dimension that I can use to work out whether mine are too worn.
I might end up just putting them back in and see if the clutch slips, I don't plan to do any hard racing with it so maybe it won't matter.

Wayne from Oz

[Hosk1956]

Has anybody got any new clutch plates anyway, 2 days of searching the internet hasn't turned up any, so I may have to hope mine are ok anyway. I remember on another bike I put washers under the springs to get a little more clutch life to get home from a trail ride.

Wayne from Oz

[Al Harpster]

Well, a quarter millimeter is just under ten thousands of an inch.

Since you're less than a quarter of a millimeter off I'd certainly put them back in. As is, no spacers.

Most of this friction stuff was ground to "size" after compression molding. Friction stuff like this was often ground by machines using sanding belts.

I'd guess the manufacturing allowances we're +/- a tenth of a millimeter or plus a tenth, minus nothing.

Unless they are charred, I'd try it with confidence.