Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site tymix.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!oliveb!tymix!kanner From: kanner@tymix.UUCP (Herb Kanner) Newsgroups: net.auto.tech Subject: Re: Continuous Transmission Message-ID: <569@tymix.UUCP> Date: Mon, 11-Nov-85 13:55:18 EST Article-I.D.: tymix.569 Posted: Mon Nov 11 13:55:18 1985 Date-Received: Wed, 13-Nov-85 08:26:41 EST References: <10878@ucbvax.BERKELEY.EDU> <922@burl.UUCP> <923@burl.UUCP> Reply-To: kanner@tymix.UUCP (Herb Kanner) Organization: Tymnet Inc., Cupertino CA Lines: 40 Summary: In article <923@burl.UUCP> ahs@burl.UUCP (Spinks Albert H. ) writes: >> > >> > Have anyone heard about this so-called continuous >> > transmission? According to some friends, a car equipped with >> > one was presented in this year's Automobile show in Turin, >> > Italy. >> > As it was described to me, it is basically a pair of >> > controllable variable diameter wheels linked by a belt; which >> > enables the driver to choose among any of the infinitely many >> > transmission ratio possible. >> > Any information would be helpful. >> > Thanks, >> > --Marcio >> > >> > carvalho@ucb-vax.edu >> > ucbvax!carvalho >> >> *** REPLACE THIS LINE WITH YOUR MESSAGE *** >> The type of transmission you have discribed has been used on farm equipment >> for at least 25 years, especially large grain combines. The system is >> composed of two variable diameter pulleys with a belt in between. One >> pulley has a hydrolic cylinder attachment that controls its diameter >> and the diameter of the second cylinder simply 'follows' the first >> through a spring loaded arrangement. The hydrolic system is under the control >> of the operator. >> >> This system works quite well; at least the ones that I am familiar with did. >> No maintenance was ever required, etc. But they were huge; size was not a >> serious factor on the side of a big piece of field equipment. It is hard >> for me to picture a manufacturer development anything like the above that >> would fit in as small a space as our standard car transmissions. >> I lived in England between 1970 and 1977. Saw quite a few specimens of a car with a continuous transmission. It was called a DAF, and was made in Holland. Used a belt and cone pulleys. I was told that the belt was no more likely to break than an axle on a conventional drive. -- Herb Kanner Tymnet, Inc. ...!hplabs!oliveb!tymix!kanner