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OVERDRIVE P85 PRIMARY

Weighted shims? Or weight shims? Just want to clarify.
 
Weight shims sorry. Ya i went in for machine, balance and rebuild. 3k miles on it. Its off my switchback axys
 
IMG_0116.jpg
just got it back from indy dan
 
Looks good Tom. If you take it apart, you'll see he added a glide shim in between the spring and the spider to prevent any spring binding. He does a really thorough job on clutches. Been using him for my last handful of sleds and been very happy with the outcome.

What's in the plastic bag? I don't recall receiving anything similar on my returned clutches. Whatcha hiding there buddy!?!?
 
Thats just my worn parts in the bag lol. He actually sealed then up like new lol. Im not sure cuz i havent teken it apart but just looking at it it looks like they did something in there
 
Just-Pinch-It said:
Does he recess the spring pocket for the extra thickness of the shim?
Click to expand...

Most primaries I've measured inside free length from factory is well over 2.5" that Polaris has as there spec .
2.625"-2.7"I've seen out of dozens of them .
That's why I measure and supply guys with washers to make it to Polaris spec(2.5")
 
Yes it is, and not many are 2.5" free length inside clutch spring pockets . 1/8 " over 2.5" spec would change clutch spring lbs. rate
I explained this in another thread in here awhile back.
So that could make the gold spring about 85/260 , not the 100/275
 
Maybe a silly question buts is it possible for any extra top end, with machining for extra overdrive with the pro x with 1 3/4" and lower gear ratio?
 
Anytime you can push the belt further up the primary ur circumfrance will increase, resulting in taller ratio= more speed. Ur pulling the belt down further in rear also which is affect the final ratio
 
Hi guys,
Relatively new here just getting back into it been out for a while since the 90', great info to read slowly educating myself, we use to do the overdrive ourself start the engine stick a file and shave it. Homemade lathe lol


Thanks
 
Question, with a machined primary for more overdrive, lets say you don't touch your gearing at all. W/o gearing down, and machining your clutch for more overdrive, could it effect RPM's throughout the shift band and impact performance and top speed (make top speed and RPM's worse since you didn't gear down)?
 
trdehmer said:
Question, with a machined primary for more overdrive, lets say you don't touch your gearing at all. W/o gearing down, and machining your clutch for more overdrive, could it effect RPM's throughout the shift band and impact performance and top speed (make top speed and RPM's worse since you didn't gear down)?
Click to expand...
Machining for OD is just that , pushes for more top end.

It's your machined spider,sheave faces and more that's affecting you as I was explaining earlier
 
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