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Why don't sprotbiles use CVT?

I dunno what bracket you could put my DRZ in.

Maybe [slow].

:laughing
 
maxandgrinch said:
I know BARF well enough that me as a random wacko with no street cred wasn't going to work :laughing

I think I'll stick a GoPro on the bars pointed at the left grip to see how many miles it takes for her to unlearn

:wave Connie - I would have told you I was doing that

This bike could have gotten so many more people on the bikes - look what automatics did for Porsche, Aston-Martin, Ferrari: girls can now drive them. /jk
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I think it just created a larger market of cars people with lacking skills can unappreciate and under utilise.
 
ST Guy said:
Probably two reasons. One, given the ability to handle the same amount of HP, the CVT is going to be bigger and heaiver.
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Are you sure about that? From what I've read, CVTs are actually quite compact compared to most other transmissions, especially now that the auto market is moving towards 6 speeds.

Think about it this way: Scooters manage to sandwich an entire engine and CVT onto the swing-arm.
 
The ones you tried with cars and scooters were low-powered, economy-minded vehicles. You can't really use a economy car with a CVT as a good reference. Same with automatics in corvettes versus a camry. The shift points are set differently to take advantage of the abundant power when you floor it, versus economy cars trying to shift to lower RPMs right away.
 
hiccup said:
I hate CVTs, or at least the ones I've tried in cars and on scooters. Poor throttle response, and in a powerful vehicle I imagine throttle modulation would be an issue as well. I like gears because they give me exactly what I expect exactly when I want it and a beautiful soundtrack to reinforce doing everything right. CVTs only make sense to me on low power, efficient engines. If it's a high rpm screamer I want to feel that rush to redline as directly as possible.

Scooters are fun in their own simplistic way (pin throttle, turn when necessary) but a manual motorcycle is infinitely more engaging and therefore fun for me. SMG and DCT at least give you that instant throttle response.
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I suspect that most CVT are set up for maximum economy and newbie friendliness. They could stay where they are when the throttle is revved to simulate not shifting up and even effectively shift down as appropriate.

EDIT- beaten to it...
 
Start 'holding gears' with a CVT and you might as well be running a standard gearbox.
 
Human Ills said:
Start 'holding gears' with a CVT and you might as well be running a standard gearbox.
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Nonsense, no abrupt shifts when you shift in and around turns, nor any need to stop applying power to the wheels. And you can fine tune the "holding" to be incremental or gradual or to optimize the torque characteristics of the engine.
 
Human Ills said:
Start 'holding gears' with a CVT and you might as well be running a standard gearbox.
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Wrong, because they are much less abrupt. And imagine being able to set it so it will stay right in the powerband, or even at a set RPM, while you ride around the track.
 
OMG, this thread makes me so happy. I can't tell you. :cry

Just so some "power freaks" do not get confused. The most powerful internal combustion engines, top fuel dragsters, use no transmission, "sort-of" like a CVT. Most use just a stack of clutch-plates, electronically controlled.

Traction (power to wheels) is completely controlled by, wait for it ........




clutchslip :party
 
I always wondered about that, clutchslip. My approach to a race launch on the GS500 is to start with the engine at torque peak with the clutch just barely engauged. As soon as the flag drops, I go WOT and try to slip the clutch just enough that the revs don't fall. It seems like this approach would deliver peak torque to the rear wheel.
 
Update Connie/Gixxergirl1000 is riding a CVT motorcycle, right now.

She was instructed in the four control modes and is tryin' em all. She's on a section of road she is familiar with.
 
clutchslip said:
The most powerful internal combustion engines, top fuel dragsters, use no transmission, "sort-of" like a CVT. Most use just a stack of clutch-plates, electronically controlled.
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Unless they changed the rules, the clutch is fully mechanically controlled, the NHRA doesn't like computers (in the fuel classes) except for data gathering. Correct me if I'm wrong.
 
I really like the cvt in my 500 Piaggio scooter. It's great for heavy city traffic, mybe even a little safer since I don't need to think about shifting and I can concentrate on the traffic around me. It can get a little boring, not as mutch fun as my Versys.:ride

In 100 years from now Harley will come out with an automatic motorcycle.:rofl
 
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