Originally Posted By: rpn453
Originally Posted By: JOD
As far as F1, it's pretty irrelevant to this discussion, but let's not pretend that people are using sequential automatics because they're "better". Fully-automatic transmissions, including CVT's are against the rules. If they weren't, most people familiar with the sport agree the landscape of transmissions would look a lot different.
Probably true, but it's hard for me to imagine leaving gear selection decisions to something other than the driver. An unexpected gear change could have bad results. I suppose it may be possible to set it up so that undesirable or unexpected shifts never occur, even in an abnormal situation involving driver error with unusual inputs, and to have different shift points depending on track position. Are automatic transmissions banned in all racing (with turns)? Are they common, or even used, in any race series? I'd be interested in finding out more about the use - experimental or otherwise - of automatic transmissions in F1 or any other race series, if you know of any sources. It doesn't seem like manually selecting shift points would be much of a hindrance to an F1 driver who only has to push a button to demand a shift, but I guess acceleration would be a little faster if the upshift could occur at a precise engine speed every time.
Good video on the Williams CVT. I can see how CVTs would be a benefit. It's sort of unfortunate that they don't allow the technology to progress naturally, but I also wouldn't want to listen to F1 cars with CVTs.
I found a brief article on the Williams CVT:
http://www.ret-monitor.com/articles/1104/transmission/
http://www.ret-monitor.com/articles/1187/formula-one-cvt-part-2/
CVTs aren't used in pro racing for the following reasons - outside of regulations:
1. They aren't as efficient in coupling vs. a clutch, especially on the high end - this alone kills it
2. The seamless shift concept has been done with software with clutches, so CVTs lose its only benefit
3. CVTs are not reliable with high torque applications