[Polaris425]

Author:MetalMan Topic: My clutch


« Thread Started on Nov 11, 2008, 5:03pm »

I sent it to VF John Monday morning for a stage 3 spider mod. I'm anxious to get it back.


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kawa650

Re: My clutch
« Reply #1 on Nov 11, 2008, 5:23pm »

Cool, you'll have to tell us how it works out.

I want to send mine off to help out with the 29's but havent been able to, plus i haven't talked to him about it/price. About how much it costing you?
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Polaris425
Re: My clutch
« Reply #2 on Nov 11, 2008, 5:35pm »

good luck, let us know how it turns out.


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MetalMan

Re: My clutch
« Reply #3 on Nov 11, 2008, 9:08pm »

When i get it back I'll post up about it.

$280 for him to do the work and ship it back.
Link to Post - Back to Top 75.105.128.36

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phreebsd

Re: My clutch
« Reply #4 on Nov 13, 2008, 9:09pm »

did u have to send the cvt cover too?
someone mentioned stage 3 included cover modification but i cant imagine what the would be unless it's removing the kebc fork. very easy to do yourself.


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MetalMan

Re: My clutch
« Reply #5 on Nov 13, 2008, 9:25pm »

No i did not send the cover. Just the primary clutch.

I'm not sure what they meant about a cover mod?
Link to Post - Back to Top 75.105.128.56

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MetalMan
Re: My clutch
« Reply #6 on Nov 15, 2008, 2:11pm »

OK got my clutch back and installed it today. To tell the truth i cant tell much difference on the low end or mid range but the top end has more speed. I gained a good 5 MPH.Maybe more but i didn't have a chance to stretch it out all the way.

It does feel like it cruses at a lower RPM per any given speed then it did before the Stage 3 but when you nail it the power is there.

I need to do more riding to know for sure what improvements were made. I'm happy so far.


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650Brute

Re: My clutch
« Reply #7 on Nov 18, 2008, 3:25pm »

Keep us updated,....

I'm thinking maybe a stage 2 after the first of the year.
Link to Post - Back to Top 208.78.251.193

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kawa650

Re: My clutch
« Reply #9 on Nov 19, 2008, 10:55pm »

I was thinking of doing it the beginning of next year also!!
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brute650i

Re: My clutch
« Reply #10 Yesterday at 11:55pm »


any update thinking of doing this as my next mod
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Polaris425

Re: My clutch
« Reply #11 Today at 9:42am »


yeah what was the $$ too if you dont mind...
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MetalMan

Re: My clutch
« Reply #12 Today at 11:18am »


I don't really have an update on it yet. Most of my free time has been spent in the deer woods so not much riding going on. I can say it's obvious that the mod causes the belt to ride up the primary pulley at a faster rate. Just cruising around at lower speeds like 6-10 MPH the engine is pulling less RPM's. I'm assuming this is were he claims the better gas mileage comes in at. Right now I'm running the stock secondary with a maroon primary in the primary. that setup worked great with the stock clutch but since the VFJ mod I'm thinking I'm gonna have to go back the the almond secondary. Com spring time I'm gonna get out and really test it good.I'm also gonna stick the stock tires back on just to see what the top end gain was over stock.

VFJ also claims better belt grip but i can't truthfully comment on this either way. I have had no slippage problem with this clutch but i never had any with the stock clutch either.

I did not want to loss my engine brake since i do way more slow riding up and down hills then i do drag racing. I did not have John remove the KEBC bearing.

The cost was $280 plus shipping for the Stage 3 spider mod. Its an extra $15 to have the bearing removed.

His return time is awesome.If you ship it Priority Mail on a Monday you will get it back on Friday.
Link to Post - Back to Top 75.105.128.59

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MetalMan

Re: My clutch
« Reply #13 Today at 11:21am »

Its worth mentioning i have a friend with a bone stock brute just like mine,same year model. Both have MIMB snorkels that i done. His has stock tires too. When it gets warm enough we are gonna line them up on pavement and see if there really is a difference in the clutches. That the best test i can think of.
Link to Post - Back to Top 75.105.128.56

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[phreebsd]

MetalMan
Re: My clutch
« Reply #6 on Nov 15, 2008, 2:11pm »


It does feel like it cruses at a lower RPM per any given speed then it did before the Stage 3 but when you nail it the power is there.

That's what I'd be interested in. At times, I think my bikes revs too high for the riding im doing.

 

[Metal Man]

That has a lot to do with the lime green spring. Its gonna hold your belt up in the secondary much longer causing the lower gearing.

 

[phreebsd]

yeah.. i think i may keep that same spring and not get the yellow..
I saw a post on HL from speedy81304 that got me thinking about clutching..

here it is

LOL the yellow spring, i see that alot on here, everyone just thinks by throwing the stiffest spring in they are making the cvt better, when they are just killing the primary and over reving. Your primary controls shift out, and the secondary control back shifting. to much back shift and you kill the primary, and just over rev.

By running a spring thats double the oem rate is more then you need, by letting the primary to shift out you get more belt grip and increase performance by keeping the motor in its power band, and have less over rev, but also having the back shift rate so when you hit the deep stuff your in the right ratio.

BUt what do i know right, I got the slowest machine here,

with a stage 3 spider mod, maroon praimary spring, two 56 gram wts two stock wts, almond secondary spring, as my setup and I got no internal motor mods, just bolt on mods, on my prairie 700, turning 29.5" outlaws, in low range i can hit 55 mph, in high range i cant even hold on when it starts to get over 65mph,
IN lowrange in the deep mud, the throttle responce is strong and backshift is balanced to the primary.

all im saying is you dont need the stiffest spring out there to make it work great. you just need to get more then just put the stiffest spring in and call it a day. that may work but you can get so much better then that and have more performace.

 

[Metal Man]

Yep i agree with him. I run stock weights but the rest of our clutch setup is about the same . Works great for me but I'm not trying to turn monster tires in the mud either so i cant say much in that department.


IMO the quick fix for most is to just throw a heavy spring in the secondary and be done with it. While i do agree that works great for low speed machines it really robs you on the upper end of your performance.If a person is willing to try different things and see what really works best through out the entire power band then you can relay fine tune a clutch to it's best.

I could have left that green spring in my secondary and probably never slipped a belt.But i was not happy with the way if felt. Always running real high RPMs like i was in low range all the time.It would gain speed fast till the 40+ range and fall flat on its face. Then i went to the almond. IMO it felt way better to me then the green.I gained some of the mid range back but it was still sluggish one i hit the 50+ range.Next i put a maroon primary in with the almond then stock secondary. The maroon primary with stock secondary was my favorite setup. It would pull very hard all the way through the power band.

Now i have the stage 3 with maroon primary and stock secondary.But I'm thinking since the primary shifts out faster now I'm gonna have to go back the the almond secondary spring to help with the back shifting.

Don't get me wrong. It runs good right now and way better then it did when i just throw a heavy secondary in it but I'm trying to get it just right.

Once my pink primary comes in I'm gonna try it out as well just for ****s and giggles.

All my testing has be done with 28" Zillas.

I'll be glad when spring time gets here so i can trow the stockers back on it and run it against another 08 stock brute just to see if any of this has helped or hurt.

 

[phreebsd]

hmm. i think i will change my primary too..
how much difference in stall is there between stock and maroon?
I like stock stall and engagement

 

[Metal Man]

I liked the stock stall my self too and was kinda afraid to try the maroon. The maroon has a small stall. I mean it's nothing much at all thats no joke. You don't get it much above idle and it will kick in.As long as you keep the stock weights that is.If you start putting in lighter weights then the primary has to spin faster to over come the spring pressure winch in turn makes more stall. If you can get your hands on one i would suggest giving it a try since its so damn easy to but it in. You don't even have to pull the primary. Just take the primary cover off and change the spring.Its that easy.

 

[phreebsd]

yeah i know they're real easy and cheap. figure I can just get me one and give her a try. See if I can get a better feel from the bike.

 

[DrillersGoDeeper]

Talked to John Cannon a little while back and am really considering getting the Stage 3 clutch with spider mod. $295 shipped back to me. Been thinking about getting into racing and from what I've heard I'll definitely want to get this mod done before racing.

 

[phreebsd]

u gonna race with the lift?

 

[Metal Man]

I been running the Stage 3 Spider Mod for a while now and have no complaints. Belt grip is improved and so is acceleration and top end if you have the power to pull it.

 

[DrillersGoDeeper]

u gonna race with the lift?

Well...lol...I guess. I know that puts me in a class with bikes with all kinds of mods ($$$$$$). Definitely have my work cut out for me for sure!!

Might just start now getting everything setup and officially start racing next season. Maybe have my funds in better order and a better idea of what is/is not allowed and what mods the bikes in my class would have done.

I may be wrong, but I think the lift alone would put me in the OPEN class. Not sure.