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This passage begs for an illustration:
No that is not a DAF transmission that is a "Positive Infinitely Variable" transmission by PIV drives GMBH. Near but not right.
As far as I know, this car was never allowed on the track. It is now residing at the Van Doorne Transmissie (VDT) factory.
Can anyone explain the chronology of the twin-conical pulley variable speed transmission, and van Doorne's involvement in it? It appears clear that van Doorne didn't invent the mechanical design of the drive, nor even its first use as a car transmission. He may well have originated control of the pulleys by vacuum diaphrams, and the use of two separate final belt drives, rather than a single. Does anyone know the inventor, or even date, of the first basic variable drive of this form? Andy Dingley ( talk) 21:47, 12 July 2010 (UTC)
How does reverse work on these ? It is all very well to say they go just as fast in reverse, thats great, but it doesn't explain how the reverse happens. Eregli bob ( talk) 05:09, 5 August 2012 (UTC)
This article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||
|
This passage begs for an illustration:
No that is not a DAF transmission that is a "Positive Infinitely Variable" transmission by PIV drives GMBH. Near but not right.
As far as I know, this car was never allowed on the track. It is now residing at the Van Doorne Transmissie (VDT) factory.
Can anyone explain the chronology of the twin-conical pulley variable speed transmission, and van Doorne's involvement in it? It appears clear that van Doorne didn't invent the mechanical design of the drive, nor even its first use as a car transmission. He may well have originated control of the pulleys by vacuum diaphrams, and the use of two separate final belt drives, rather than a single. Does anyone know the inventor, or even date, of the first basic variable drive of this form? Andy Dingley ( talk) 21:47, 12 July 2010 (UTC)
How does reverse work on these ? It is all very well to say they go just as fast in reverse, thats great, but it doesn't explain how the reverse happens. Eregli bob ( talk) 05:09, 5 August 2012 (UTC)