Sheave Is HERE !!!!!!!!!!!!!

This, my friends, is the new and improved 660 sheave from JBS !!! And it's at my house !!!!!!!! Oh Yea !!!!!

Man am I pumped ! This thing has shinny spots(machining) in some really cool places. Hopefully I will get it installed this week and give You guys an idea of what it does !

WOW ! Thanks Hotrod !!!!

Monday's not so bad after all!!

mondays are great i got mine too

looks like the UTV stink sheave.... ...keep us posted!

Got it installed ! Havent got to go for ride yet, but I did work it back and forth a few times to make sure I got it in right.

Looks good! Which spring and size weights did you go with?

Orange spring and 16 gr. the same as what I had.

Did you ride it yet? Why did you not just mill out the webbing on your old one, to many miles?

Why the orange? What's the difference in it and the others, like the gold?

i think its cus he has a 660

Looks good,i just did the 660 mod to my jbs sheave the other day and it has alot better bottom end,now the belt will just about rub the cover! how does yours do on hills with the 16 gram ods,and whats your top speed?also what size tires are u running?

Randy3451 wrote:

Why the orange? What's the difference in it and the others, like the gold?

I just asked James whats the best for trail riding.

RedRhino64 wrote:

Looks good,i just did the 660 mod to my jbs sheave the other day and it has alot better bottom end,now the belt will just about rub the cover! how does yours do on hills with the 16 gram ods,and whats your top speed?also what size tires are u running?

How did you measure or did you just eyeball it?

I just took my sliders off my camplate and slid them down in the sheave where they would sit,then marked it with a sharpie,then i put an endmill bit in my drill press and took around 40,000ths of matterial out...done!! worked great!!

Thanks!!!

looks great man hope to get to install mine tomorrow or sat, hope mine goes as well as yours

Just make sure the splines line up so you don't strip'em and hold the camp,lte tight so the weights don't flip over. Videos help the best. Good Luck you should be fine!

Got it all sowed up and took it around the block a couple time tonight. Didn't hammer on it yet cause my neighbors have guns !!!

I really wished I could explain all about this new improved sheave but it is really over my head. Here are a couple things I have found with it.

First, You can see in this pic that the sliders have been riding on the fins of the sheave, not the weights like they should have been



After seeing this, I put the cam plate back in and picked up sheave and shook it. Just as I thought, you could here the weights rattle. Took camplate out cleaned everything up and installed in new sheave - shook it - no rattle - camplate is now setting on the weights !

James has made this to where it will allow for wear and still perform for years to come. Wish I could explain all of this but would take a month of Sundays to write it all down.

More to come. hopefully get a good long ride in this weekend.

You explained it pretty good. So what I get out of it is that there is a millimeter or so gap between the cam plate and the weights but when you mill it out of the webbing it will be flush. Can this be fixed by just buying a 660 cam plate? Whats better about the 700 cam plate compared to the 660's?
Thanks!

Thats a good question ! Seems like was matter of if You had a 660 cam plate, there was some clips You had to get to use greasless sliders or just get a 700 plate which was suppose to be better. How I don't know .

Bump.

CustomizedRhino13 wrote:

You explained it pretty good. So what I get out of it is that there is a millimeter or so gap between the cam plate and the weights but when you mill it out of the webbing it will be flush. Can this be fixed by just buying a 660 cam plate? Whats better about the 700 cam plate compared to the 660's?
Thanks!

The 700 cam plate is alot stronger than the 660,if you look at where the sliders go on the cam plate on both of them you will see,the 700 is alot beefier in that area.i know of 2 people that had the 660 plates wear the sliders and that alowed the plate to twist and bust out the dividers that are between the weights,ruined the sheaves!...get the 700 cam plate for sure!