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post #1 of 22 (permalink) Old 04-01-2010, 06:10 PM Thread Starter
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dalton clutch kit questions?

here is a crazy question that may be stupid but here goes for all the gurus here?i know im not supposed to use the weights on the arms but what about the screws that go in the rear of the arms that need an allen wrench to screw in?its a dalton kit with overdrive cover on a 840 teryx.
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post #2 of 22 (permalink) Old 04-01-2010, 06:53 PM
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Sorry for the threadjack, but I am also curious about this. No point in having two threads for the same question. I was told to use just the arms with no weights. If someone could explain what effect the screws and rivets have, and why different weights are required with different engine mods (750cc vs 840cc), not that I am doubting my source, just want to cleary understand how and why, so that I am able to make a self informed decision when it comes to clutching. Thanks.

2012 VIBRANT Blue Teryx 4, Muzzy pro's, ECU reflash, custom cage & roof, windshield, 14" STI HD Beadlocks & 32x10x14 STI Roctane's/Tatou 4S Tracks, Rigid Lights, Custom bumpers, Warn XT4000 winches front & rear, bedlift

2010 black, FST 840 stage II cams, DASA intake & injectors, BF throttle bodies, Msd, Muzzy Pro`s, Snorkeled, Warn XT 4000, EMP, 2 seat race cage, Custom rear Radiator, Unisteer, STI HD beadlocks and 30x10x14 EFX motoclaws
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post #3 of 22 (permalink) Old 04-01-2010, 09:20 PM Thread Starter
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maybe noone knows!!!!i think after reading some more that there should be no screws or weights for the 840;
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post #4 of 22 (permalink) Old 04-01-2010, 09:45 PM
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I just would like to understand what the screws and weights change, because I tried no rivets or screws without the 840 ( stock engine, muzzy, msd) and it felt like a POS, alot of reving and not much moving. wondering how the extra motor changes it so much and works better with this setup?

2012 VIBRANT Blue Teryx 4, Muzzy pro's, ECU reflash, custom cage & roof, windshield, 14" STI HD Beadlocks & 32x10x14 STI Roctane's/Tatou 4S Tracks, Rigid Lights, Custom bumpers, Warn XT4000 winches front & rear, bedlift

2010 black, FST 840 stage II cams, DASA intake & injectors, BF throttle bodies, Msd, Muzzy Pro`s, Snorkeled, Warn XT 4000, EMP, 2 seat race cage, Custom rear Radiator, Unisteer, STI HD beadlocks and 30x10x14 EFX motoclaws
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post #5 of 22 (permalink) Old 04-01-2010, 10:21 PM
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Hit up Hunterworks. He's pretty damn knowledgable on this stuff. He's a Dalton fan as well. Hope to get one for mine soon.
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post #6 of 22 (permalink) Old 04-01-2010, 10:40 PM
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I'm sure he can help you in your set up.
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post #7 of 22 (permalink) Old 04-02-2010, 04:53 AM
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this is what i have found,spent whole day playing with weights.the more wieght you put in arms the quiker it shifts resulting in lower rpm,i think the big bore slings the arms so hard and fast that with weights in it squeezes the crap out of belt resulting in wasted energy and trying to upshift way early and to low rpm for bigbore.anything less than 2 set screws in arms lets belt slip at midrange with stock engine.i too looking for a good 840 clutch setup, im gonna start with amber primary alum slug with 1 set screw all the way to bottom of thread passage,still prob to heavy but good starting point i hope.

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post #8 of 22 (permalink) Old 04-02-2010, 05:55 AM
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Sorry for the delayed response.

It is all about centrifugal force. The more powerful the engine the faster the flyweights will sling out, so you take weight out of them to slow this process down.

As for the feeling of lots of RPM and no go is just something you get used to, you are actually moving much faster. You want the engine to run up to peak power point and hold.

The set screws are just a way to add or take away weight to the fly weight, same as the rivet on the end. Where the weight is in the flyweight plays a role too.

Take a look at the dyno chart below, the top one is a Dalton kit, notice how flat the curve is, bottom one is the EPI.





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post #9 of 22 (permalink) Old 04-02-2010, 06:55 AM
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V force john spider mod changes all that for the bbk kits. And alowes the motor to rev a higher rpm. Call john at interstate moter sports. Great guy will explane it to you.Also there is a therad at kawie atv forum.John told me he is gitting 63-64 hp out of his standard bore. 4 of that with chucth tuneing.Get two machines same mods tuned right. VFS's will walk away from dalton mod. Not trying to start a fight.
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post #10 of 22 (permalink) Old 04-02-2010, 08:03 AM
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Quote:
Originally Posted by pit dog View Post
VFS's will walk away from dalton mod. Not trying to start a fight.
I respectfully disagree. Out here in Glamis? I have seen differently...but street/mud drags are a whole different animal than the sand we ride on so I'm sure VF's mods work better in that application.

For our 840 we ran no weights or screws. Like HunterWorks said? You will have to get used to driving it. The spring change makes the machine act like it has a stall converter...so it takes a little revving before it drops the hammer...
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