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Hello all, I want to go greasless on my 2006 Grizzly 660. I run 27" ACT HD tires and pretty much stock. I do all trail riding below 30mph some mud some rock. Where is the best place to purchase greasless parts for the 660? Also thinking of installing an EPI orange secondary spring with the stock weights to see if I can get a bit more low end grunt. Any suggestions would be great. Thanks.
 

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Hello all, I want to go greasless on my 2006 Grizzly 660. I run 27" ACT HD tires and pretty much stock. I do all trail riding below 30mph some mud some rock. Where is the best place to purchase greasless parts for the 660? Also thinking of installing an EPI orange secondary spring with the stock weights to see if I can get a bit more low end grunt. Any suggestions would be great. Thanks.
http://www.grizzlycentral.com/forum/grizzly-engine-transmission/22617-greaseless-weight-setup.html

https://www.buggypartsnw.com/index.php/dr-pulley-slider-weight-30x15-for-rhino-grizzly.html
 

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1.5mm of shim for more grunt. Less then $10.
 

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Be aware that “sliders” are slightly thicker than rollers and you loose some low end with them. When guys are going with machined sheaves the low-end loss is hardly noticeable because the channels are machined for that, but putting sliders in a stock sheave yields a set up that cannot close as tightly as with rollers. There are videos on YouTube that explain it.


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I believe there are Hunterworks videos that go into detail and actually show micrometer measurements of the difference


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Be aware that “sliders” are slightly thicker than rollers and you loose some low end with them. When guys are going with machined sheaves the low-end loss is hardly noticeable because the channels are machined for that, but putting sliders in a stock sheave yields a set up that cannot close as tightly as with rollers. There are videos on YouTube that explain it.


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That's true. And the funny thing is the Dr Pulley youtube videos inaccurately promote themselves as providing a lower pulley ratio in a stock sheave at takeoff.
 
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Keep in mind that not all modified sheaves have the channels cut (modified). For a fact Coop45 just does the surface to achieve his low numbers. I think that JBS does the channel thing and not sure about the others (Hunterworks etc.).
 

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I know for a fact that Hunterworks has speacial channels for their new slick weights.
 

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Buggypartsnw is the best place to buy DrPulley greaseless roller weights. Now days OEMs will work greaseless but can't be found in as many different weights (grams) and cost a little more.
Stay away from the Drpulley slider weights. They aren't really wider. Without sanding the backside a little their shape doesn't allow them to slide completely toward the center of the primary. This hinders the low end ratio.

Hunterworks only mills the length of the roller channel he doesn't machine the width.
 
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