Hi, So can someone tell me when the planetary transmission was designed? I was think is was back around 1885? Maybe a frenchman? Thanks for any info you can provide, Scott
I believe Haynes-Apperson is listed as the first U.S. automaker to sell a planetary gear car in 1898 or 1899. I don't know about foreign automakers. Maybe patent info would help find an earlier date?
Thanks Rob, I didnt think that Henry designed this tranny but copied one. Thanks, Scott
Ford didn't copy the T planetary transmission, he revised on earlier designs of others of course, as is mostly the practice in developments. As 25% of the cars shown at the New York Auto Show, when the T was introduced used a planetary transmission.
Ford's own design was patented, was compact and used spur gears, and it provided great performance for the light weight car, with ease of owner operation.
Busting gears in typical early selective shift transmissions was common in the early days.
Combining the T's transmission and the flywheel low tension magneto internal to the power plant for simple ignition source was revolutionary in 1909.
The planetary transmission dates back to around 100 AD. Oddly enough it was used to illustrate the motion and position of planets in relationship to the earth. Not by a Frenchman but a Greek named Ptolemy if I recall.
The Ford transmission (and differential) are very similar to my 1901 Curved Dash Oldsmobile, that was prior to either Ford motor company being formed.
Well thanks for the info. I didnt want to give credit to a frenchman if I didnt have to. I feel better now. Scott
Robert, You are welcome. John Semprez,(a Frenchman).
In principal how a planetary transmission works---