My XC500EFI, the CVT is really hot,after a ride.
A half hour after stopping, it is still very hot.
I have noticed it previously, but did nothing about it.
I have seen comments about it does get hot since there is a lot of friction going on.
But I have also seen comments that heat destroys belts, so which is it?
Anyways I decided to tackle this issue when I replaced the movable part of the variator (where the rollers fit),as a cooler CVT will be better than a hotter one,with the belt having a longer life, and hopefully providing top performance throughout its working life.
Smoother take off now, yippee!
Back to topic.....
The 2010 model has a scoop on the front portion of the plastic CVT cover.
I took that off and drilled some more holes into that cover behind where the round scoop mounts.
There is a 3-4mm space between it and the cover.
I think the scoop design is to cause a pressure drop so air will be sucked into the CVT.
Turning over the front cover, I see grooves funneling the air back out, between the front cover and the rear cover.
That seemed a waste of cooling potential.
I drilled some holes into the rear cover so that as the air is exiting the front cover of passes over these new holes, and some sure should penetrate the rear cover, and have some cooling effect on the the actual CVT aluminium cover where the clutch resides.
There is no place to drill holes for the air to exit the rear cover that will be hidden (I like my home mods to stay out of sight), but like the speed of the bike will force the air to find any available gap to exit the rear plastic cover.
There is a xc500 user calling himself spook, based in Asia who made an interesting mod on the actual CVT case.
He cut a rectangle gap into the case in the front if bulge that covers the clutch, so incoming air will have direct contact with the bell, thereby keeping it cool.
I don't know if the structural integrity will be negatively effected, but probably not, since I found a guy on an island who has an Italian 500 scooter(16" wheels) ,and no access to spares. (malaguti spider)
Anyways, drifting from topic.
My point with his scoot is that he shows pics of his CVT cover and the design has holes all over the clutch bulge area, around the top of the cover where the bearing lives. Something like how the bell looks.
Finally, I have no way to test if my little MacGyver stunt will make any improvements in cooling off the CVT area.
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