Let me start by saying that I have zero interest in a big bore twin myself. So I come at this only from a general interest in powersports technologies and engineering. Skip to the bottom paragraph if you want to jump to my idea.
I’ve heard it said many times before that Yamaha won’t come out with a big bore twin in the Grizzly because the wet clutch would not be able to handle that much power. Some may argue against that theory, but let’s just assume it is true, because Yamaha hasn’t gone down the path of putting their ultramatic in anything bigger than a 708 single. And could you imagine the hayday their competitors would have if yamaha put a more standard snowmobile style cvt in a new big bore atv? After all of Yamaha’s promotion of the ultramatic, it would be a marketing nightmare.
So anyway, here is my idea…
Yamaha already has the clutch technology to use the ultramatic in a 1000cc twin. They could replace the existing Grizzly centrifugal wet clutch with the multi-plate clutch that is automatically controlled by computer from the YXZ SS. Then they’d still be able to have the constant belt tension and true engine breaking you get with the ultramatic, but no centrifugal clutch to slip.
Let me start by saying that I have zero interest in a big bore twin myself. So I come at this only from a general interest in powersports technologies and engineering. Skip to the bottom paragraph if you want to jump to my idea.
I’ve heard it said many times before that Yamaha won’t come out with a big bore twin in the Grizzly because the wet clutch would not be able to handle that much power. Some may argue against that theory, but let’s just assume it is true, because Yamaha hasn’t gone down the path of putting their ultramatic in anything bigger than a 708 single. And could you imagine the hayday their competitors would have if yamaha put a more standard snowmobile style cvt in a new big bore atv? After all of Yamaha’s promotion of the ultramatic, it would be a marketing nightmare.
So anyway, here is my idea…
Yamaha already has the clutch technology to use the ultramatic in a 1000cc twin. They could replace the existing Grizzly centrifugal wet clutch with the multi-plate clutch that is automatically controlled by computer from the YXZ SS. Then they’d still be able to have the constant belt tension and true engine breaking you get with the ultramatic, but no centrifugal clutch to slip.
