New CV Tech clutch, only starts to move at ~3000 rpm? - Can-Am ATV Forum
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post #1 of 11 Old 04-12-2019, 01:10 PM Thread Starter
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New CV Tech clutch, only starts to move at ~3000 rpm?

Hey guys, just installed a CV tech primary, I ordered the spring and weights for a 500 on 28" zillas and swapped them out.

It takes a while for the secondary to engage now though, as you can see from the video its at like 3000 rpm. It used to be like 1300 rpm or something. The clutch is insane and it will wheelie now no problem, but is the higher RPM engagement normal or should I be concerned?

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post #2 of 11 Old 04-12-2019, 01:17 PM Thread Starter
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I've done a bit of research and watched a few videos about CVTs but basically with the stiffer spring and heavier weights its increased the engagement RPM to provide more power/torque for when the secondary does engage, which helps with bigger tires, right? This is harmless and will help in mudholes etc
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post #3 of 11 Old 04-12-2019, 01:45 PM
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Think of it just like a "stall" in your torque converter- you're right in anticipating some further rpm movement upwards towards the engines power band, before clutch engagement, but imo, ~3000rpm is excessive. I don't see where/why it'd need to be that far up in the rpm range. But I dunno, it's your ride/style, it may work for you.
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post #4 of 11 Old 04-12-2019, 01:45 PM
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What spring and weights are you running? It depends on what you want to do, if your mudding the higher engagement will help. But 3000 is alot. When I ordered the cvtech for my 570 they weren't even close on what the recommended so I had to do some trial and error.
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post #5 of 11 Old 04-12-2019, 02:22 PM Thread Starter
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What spring and weights are you running? It depends on what you want to do, if your mudding the higher engagement will help. But 3000 is alot. When I ordered the cvtech for my 570 they weren't even close on what the recommended so I had to do some trial and error.
We do a lot of mudding and rock climbing, good bit of technical stuff etc but also some fast trail riding! Yeah 3000 seems like a lot, but I don't really care as long as its not gonna cause any harm to the machine or belt.

Do you recall what weight/spring setup you used for your 570? I have 28" zillas on the way (currently have 27" zillas) maybe the bigger tires will bring the rpm down a little bit?

Thanks for the replies guys!
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post #6 of 11 Old 04-12-2019, 02:38 PM
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3000 seems pretty high. I just installed the CV Tech primary and I'm quite sure that my doesn't engage that high. I'l have to check.
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post #7 of 11 Old 04-12-2019, 02:55 PM Thread Starter
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Do you guys know if there's any harm in starting at 2800-3000rpm? I haven't really had the chance to go out for a long ride yet but it doesn't bother me too much. If its bad for the bike somehow then I'll definitely be swapping out springs/weights. Haven't even looked at the shift-out stuff, still have a lot to learn lol..
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I'm running the 1017 spring and I believe 2006 weights. I'm strictly trail burner, my engagement is 2000. Here's the spring and weight charts.

http://www.cvtech-aab.com/en/114-tra...ing-chart.html

http://www.cvtech-aab.com/en/42-trai...ght-only-.html
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Originally Posted by timbobzimbob View Post
Do you guys know if there's any harm in starting at 2800-3000rpm? I haven't really had the chance to go out for a long ride yet but it doesn't bother me too much. If its bad for the bike somehow then I'll definitely be swapping out springs/weights. Haven't even looked at the shift-out stuff, still have a lot to learn lol..
I wouldn't want to be "shocking" my driveline repeatedly, at that kinda RPM. If you can indeed feather the throttle and kinda roll into the engagement, go for it. Just don't be the guy that shows everyone how easy your bike wheelies now. After a few videos you may end up with a busted diff or driveshaft. Jus' sayin'.....
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"Barn find" 05 Bombardier 400 MAX XT - stock
Upgrades:
12" Beadlocks and 28" S/W Outlaws
WildBoar Radiator Relocate
OPT7 C1 Lightbars 14" and 22"
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07 Renegade 800
08 Outlander 800 Gorilla edition
08 Outlander 800 Max XT Gorilla lifted
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post #10 of 11 Old 04-12-2019, 07:27 PM
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My 570 engages at 2500. I got weights and spring for 28" tires. You get used to it.... However, around 2000 would be a bit smoother. Mine wheelies pretty easy with no pull of the bars and I'm sitting in normal riding position.

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