Is yours beyond a rebuild ?
KK4
KK4
CVTECH primary clutches
Anyone ever run one of these primary clutches ? Have to replace primary on a 2004 sportsman 700 twin. They are about $200.00 less than OEM
1 - 17 of 17 Posts
yep, sheeve has some cracks starting
Older thread but wanted to respond about the CVTech primaries... I put one on my 2011 Polaris Ranger 500 EFI about four months ago. Biggest thing for me is that the primary (stock) used to engage (start moving the UTV) at about 1500 RPM. With the CVTech it is more like 1900 RPM. The clutch was ‘calibrated’ by the shop I purchased it from, based on what CVTech had provided the shop. Anyway, I don’t like that it engages so late, so now I have to order another weight kit ($25) and goof around with that. Not really impressed too much. CVTech isn’t that easy to get a hold of either. Sooo, if I could do it again I would just do a stock primary, but it depends on what you are trying to accomplish I guess. I will repost once I receive and install the heavier weights in the CVTech.
So another follow-up to my CVTech Trailbloc primary clutch adventure. So now CVTech tells me to try another spring and hold off of the heavier weight installation. But in order to pull the CVTech clutch, I need a CVTech puller, cause my Polaris puller won’t work. So all in all, so far I’m into this for the CVTech primary, a CVTech puller, a CVTech weight kit, a CVTech belt, a free CVTech spring and I still don’t have a properly operating clutch. So if anyone wants my opinion of CVTech, PM me. And I thought buying from a Canadian manufacturer would be a good idea...
Just another update. Installed the new lighter spring and it works much better. Would be interesting to try the original heavier spring and the heavier weights but just going to leave it. Guess the moral of the story is if you are going to go with a CVTech primary, make sure you get some extra parts (springs and weights) so you can tune it yourself. Seems like a good and simple design otherwise.
I bought the trailbloc for my 2016 ranger 570 midsize and love it, but like you said it does engage to fast. I have 27” itp blackwater evolutions on my bike and ordered the clutch with weights for that size tire but found it engaging way to high. I ordered the stock tire size spring and weights and it much better now. It also responds much better than the stock primary. Very impressed.Just another update. Installed the new lighter spring and it works much better. Would be interesting to try the original heavier spring and the heavier weights but just going to leave it. Guess the moral of the story is if you are going to go with a CVTech primary, make sure you get some extra parts (springs and weights) so you can tune it yourself. Seems like a good and simple design otherwise.
I have a PB80 on my snowmobile. It's outstanding..Only issue I get is belt squeak when it get's hot.
My 2018 Polaris voyageur 550 came with a pb50 and does the same thing. Only when she gets hotI have a PB80 on my snowmobile. It's outstanding..Only issue I get is belt squeak when it get's hot.
Just curious what sled do you have the PB80 on?I have a PB80 on my snowmobile. It's outstanding..Only issue I get is belt squeak when it get's hot.
I've been scouring the internet looking for information about one of these on a Ski Doo G4. It's either this clutch or a Polaris Primary.
I have a 09 GSX 1200. I got the PB80 from Cudney Racing some 7 years or so ago. It works great. I do not use the secondary helix, as it's a different type of spring and bangs when closing. I use the factory torsion setup. I am not a power user so I don't need to worry about maximum performance. I probably have 9k miles on it.
Well since we are talking Clutches. On my 850 it don't engage until about 2100. I wish that was sooner , Why would it do that ?
Bigger tires. The big bore engines typically engage around 1900, but once you change out those crappy little tires with bigger, heavier ones, it will bump up your engagement. If you want it to engage at a lower RPM, you will need to add a clutch kit. I would recommend a QSC clutch kit from RVS Performance. You give the the stats on your vehicle, how you ride and how you want it to perform and they will customize a kit for you. My 850 engages at 1600 RPM with 28" Mega's.Well since we are talking Clutches. On my 850 it don't engage until about 2100. I wish that was sooner , Why would it do that ?
I realized this is an older thread. I have the same Ranger 570 Midsize and was looking at cvtech clutch. I also run 27" Big Horn. Glad I read your thoughts on the clutch weight and spring. I just run the stock weights and springs on my polaris clutch and it works ok. Clutch is worn and noisyas well. What I'm really curious about is the noise of the cvtech makes? I believe it's fairly noisy?I bought the trailbloc for my 2016 ranger 570 midsize and love it, but like you said it does engage to fast. I have 27” itp blackwater evolutions on my bike and ordered the clutch with weights for that size tire but found it engaging way to high. I ordered the stock tire size spring and weights and it much better now. It also responds much better than the stock primary. Very impressed.
Thanks,
Paul
Welcome to the forumI realized this is an older thread. I have the same Ranger 570 Midsize and was looking at cvtech clutch. I also run 27" Big Horn. Glad I read your thoughts on the clutch weight and spring. I just run the stock weights and springs on my polaris clutch and it works ok. Clutch is worn and noisyas well. What I'm really curious about is the noise of the cvtech makes? I believe it's fairly noisy?
Thanks,
Paul
1 - 17 of 17 Posts
- This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Polaris ATV Forum
A forum community dedicated to Polaris ATV owners and enthusiasts. Come join the discussion about Rangers, Sportsmans, Scramblers, Magnums, and others. Research modifications, troubleshooting, maintenance, and more!
Full Forum Listing
Explore Our Forums
Recommended Communities
