[Cforcerider2021]

I also contacted cf moto usa about the issue. This was their response.

Thank you for contacting CFMOTO-USA:

 

If this is your first vehicle with a CVT system, what you are experiencing is completely normal. The CVT governs the vehicle speed and RPM based on throttle input and load, and its intent is to keep the engine in its powerband.

If you are using low gear, this effect is more noticeable than if using high gear. Do not be afraid of the engine RPMs. This is what the vehicle is designed to do.

Also, do not use high gear to keep the engine RPMs artificially low. This will heat the CVT belt and cause it to wear prematurely. Any constant speeds under 20 mph should be done in low gear.

 

Enjoy your vehicle!

CFMOTO-USA Customer Care

[doug80638]

What CFMoto is saying is essentially true. These engines are designed to spin fast and pull in the powerband.
And using low gear for slow travel will extend belt life.

It's the comments about CVT and belt break-in I take issue with. The weights don't get heavier by themselves, and the springs shouldn't give up tension on their own either.

What concerns me is the particular speed/gear to RPM ratio.

The problem for me is that you don't need to be in the powerband for a 15mph cruise on the flats in high gear. Low gear sure, but not high gear.

Maybe this particular machine is deliberately engineered to behave this way. Tell me, are you running 5000RPM at 30MPH cruise in high gear on the flats? And at what RPM does the CVT grab and start moving the machine?

[Cforcerider2021]

What CFMoto is saying is essentially true. These engines are designed to spin fast and pull in the powerband.
And using low gear for slow travel will extend belt life.

It's the comments about CVT and belt break-in I take issue with. The weights don't get heavier by themselves, and the springs shouldn't give up tension on their own either.

What concerns me is the particular speed/gear to RPM ratio.

The problem for me is that you don't need to be in the powerband for a 15mph cruise on the flats in high gear. Low gear sure, but not high gear.

Maybe this particular machine is deliberately engineered to behave this way. Tell me, are you running 5000RPM at 30MPH cruise in high gear on the flats? And at what RPM does the CVT grab and start moving the machine?

This is all stuff I would have to test. I might take it out today and check it out. But if my memory serves me correctly. I was going about 32 mph tops and it was still around 5000. And the low gear on this even at low speeds it seems like the motor is really loud. I'll see if I can makea video and post it.

[Cforcerider2021]

Update 2:

Just talked to a 3rd separate service department. And the guy just got back from a CF Moto school. He said they are geared that high and that is how they are supposed to run. He said they shouldn't even engage till 3000 RPM.

So I guess everything is ok. Just strange.

[doug80638]

Fair enough.  What RPM does it idle at?

[Cforcerider2021]

Fair enough.  What RPM does it idle at?

In park/low I was idling just under 2000 rpm.

[NMKawierider]

Fair enough.  What RPM does it idle at?

In park/low I was idling just under 2000 rpm.

Yeah I heard they idle somewhere around 1700.

[doug80638]

OK. That seems high too.

Older CFMoto single cylinder engines are spec'd at 1300-1500 RPM.

The manual for 2021 600: 

    https://cfmotousa.com/portals/0/2021-CFORCE-600.pdf

says  "Engine idle speed: 1500 rpm ±150 rpm (engine at operating temperature)" (page 132).  Engine idle is controlled by the ECU, so I'm not sure what to think.

It's probably fine, but  I think you are justified in your observations even though they may be normal for this machine. I would have raised an eyebrow too.

My  preference would be to get the idle adjusted, and add some weight to the rollers if engagement RPM is too high (abrupt) and shift out is too slow.

But first priority is to just enjoy the machine :-)

Good luck.

[Cforcerider2021]

OK. That seems high too.

Older CFMoto single cylinder engines are spec'd at 1300-1500 RPM.

The manual for 2021 600: 

    https://cfmotousa.com/portals/0/2021-CFORCE-600.pdf

says  "Engine idle speed: 1500 rpm ±150 rpm (engine at operating temperature)" (page 132).  Engine idle is controlled by the ECU, so I'm not sure what to think.

It's probably fine, but  I think you are justified in your observations even though they may be normal for this machine. I would have raised an eyebrow too.

My  preference would be to get the idle adjusted, and add some weight to the rollers if engagement RPM is too high (abrupt) and shift out is too slow.

But first priority is to just enjoy the machine :-)

Good luck.

I just took it on a ride near where I lived. Went over steep snow covered hills no problem. I tested it in low get up to 20 mph. And to be honest after about 10 mph it seemed like it was great! I guess where the speed was low the high rpm scared me but I mean I love this freaking thing! Can't complain. I got some heated grips on the way can't wait!

[maytheforce]

I picked up 2 2021s as well, both are exactly as you state with higher idle, higher clutch engagement, and match rpms at those speeds.  lots of fun so far.  It's unfortunate they make you feel like you're not taking care of your machine for break-in because there is literally no way to accomplish that.

[sympatico]

I've noticed pretty similar thing with my 2022 600 touring.

Curious if anyone has gotten any more info on this. It definitely seems to effect the fuel consumption as well as I think is mentioned in another thread around here.

I'm not sure if it's just my imagination (probably is lol) but after about 170km of break-in it seems like maybe the RPM requirement has tamed slightly, as has the engine braking. Still though it seems high.

One thing I did notice is that up to 5k RPM the speed is very slow/gradual...but as you bump over 5k and close to 6k the speed really ramps up. Like you basically double the speed as you go from 5k to 6k. So it just seems like low speed requires a lot of RPMs and that curve drops off above that. Anyone else find this?

Due to bring it in to dealer for the post break-in period first maintenance and will ask what's up but I suspect I'll hear the same as others, that "it's normal".

[Cicch95]

I don't have any exact numbers, but my 2021 600T with 200 miles on it is pretty much the same way. Revs high.  It is a totally different animal than my 400 for sure.   400 engages and gets moving quickly.  The 600 seems to lag along, until as others have said you get those rpm's up there.  The machine is sure a beast though. Can get through anything and up anything!       I have read about changing weights, etc...adding pennies.....and so on.  The question is though.....if you do that, will the machine perform as intended?

[System]

You can add me to the high RPM club as well. I will likely consider changing the clutching when the warranty is up...

[Merril_G]

Greetings everyone,

New member here.  My Dad bought a used 2020 CForce Touring 600.  It worked quite well for snow plowing last winter.  Have gone on a few trail rides and like this thread, the ATV is revving too high.

CFMOTO says that’s normal for this machine, and yes, this model all seem to do it.  Okay, why?  So, the ATV is at maximum power all the time for sand dunes and mud bogs?  Such ridiculous engine revs for puttering on a level trail at 15 mph is not acceptable.  Frankly I think a couple of ship containers full of CVTech clutches were purchased by the factory with the wrong specification and the company is not admitting their mistake.  Think about it; a touring model with that clutch tuning?

I think there are a few forum members who’ve changed the primary drive clutch weights.  Can anyone chime in to what weights they chose and the resulting rpm drop?  I’d guess they may have likely changed the spring as well?

Does anyone know of a source and link to get a good selection of clutch parts?  I’m ready to make some changes.

In addition, has anyone changed the helix for the secondary driven clutch?  I’ve read a steeper ramp angle will cause the clutch’s sheaves to open sooner, i.e., shift at lower rpms and at a quicker rate.

Lastly, the primary clutch on my Dad’s used CForce has been modified and I don’t know what the original primary clutch weights and spring specifications were.  If anyone can inform me on those parts I would appreciate it.  The clutch engages the belt at 2000 rpm, which I think is quite good, but then nearly immediately goes up to 4500 – 5000 rpm once the ATV is moving above about 5mph.

[Silvereagle]

New to the CFmoto party. Just got a 2022 600 2up. She’s a beaut. However the rpms are high compared to other atvs I’ve owned, but reading here and watching YouTube vids, I’ve concluded that it’s just the nature of the beast. Ride on and enjoy!