Thanks Bill, your drill-press example cleared it up for me quite a bit :) On Sun, May 16, 2010 at 11:38 AM, Bill Hamilton <[email protected]> wrote: > A cone-and-belt cvt works like the pulley stacks in a drill press drive. > Only, instead of two sets of pulleys, you have two cones and a mechanism to > keep the belt taut on those cones. Move the belt one way and you get more > torque, less speed. Move it the other, you get more speed, less torque. > > -Bill Hamilton > > On May 16, 2010, at 9:34 AM, Clark Ward Jr <[email protected]> wrote: > >> Thanks, my Bosch blue book doesn't have a lot of detail on how exactly >> a CVT works, only something about a band that moves between two >> cones.... I will find a book that explains it someday. But I agree, >> anytime someone claims an 'order of magnitude' efficiency improvement, >> it's time to be skeptical. >> >> On Sun, May 16, 2010 at 7:40 AM, Ben Holko <[email protected]> wrote: >>> >>> A CVT should not slip, if it does it has too much torque put through it. >>> A 'la it WILL slip if you put more torque through than it can handle. Having >>> said that, there is friction there which is what is stopping it from >>> slipping, while this geared approach has (basically) no friction. Think of >>> it like the gears of a manual gearbox, with the variability of a CVT. >>> >>> Ben >>> >>> >>> -----Original Message----- >>> From: [email protected] >>> [mailto:[email protected]] On Behalf Of Clark Ward Jr >>> Sent: Sunday, 16 May 2010 9:26 PM >>> To: [email protected] >>> Subject: Re: [TANKS] Absolute genius >>> >>> Aren't CVTs less efficient than geared transmissions, given that they are >>> slipping the whole time? Or do I misunderstand the technology vis-a-vis the >>> slipping belt and the cones of a CVT? >>> >>> On Sat, May 15, 2010 at 10:26 PM, Don Shankin <[email protected]> wrote: >>>> >>>> >>>> On Sat, May 15, 2010 at 7:19 PM, Ben Holko <[email protected]> wrote: >>>>> >>>>> http://www.youtube.com/watch?v=F6zE__J0YIU >>>>> >>>>> >>>>> >>>>> This thing may revolutionize all transmissions. >>>>> >>>>> >>>>> >>>>> -- >>>>> You are currently subscribed to the "R/C Tank Combat" group. >>>>> To post a message, send email to [email protected] To >>>>> unsubscribe, send email to [email protected] >>>>> Visit the group at http://groups.google.com/group/rctankcombat >>>> >>>> >>>> Nice concept. I'm glad they addressed my concern of having to power >>>> the second shaft. I was on board until he said he estimated it to be >>>> an _order of magnitude_ more efficient than the current CVT >>>> transmissions (not geared transmissions, but CVTs even!). We'll see >>>> where this ends up when you figure in powering that second shaft. I'm >>>> guessing (with no facts or numbers whatsoever) that it will be on par >>>> with losses associated with a torque converter (which may be OK >>>> because at the end of the day this thing is still a high-torque CVT). >>>> >>>> -Don "I'm a computer engineer not a mechanical engineer" Shankin >>>> >>>> -- >>>> You are currently subscribed to the "R/C Tank Combat" group. >>>> To post a message, send email to [email protected] To >>>> unsubscribe, send email to [email protected] >>>> Visit the group at http://groups.google.com/group/rctankcombat >>> >>> >>> >>> -- >>> Clark in Georgia >>> >>> -- >>> You are currently subscribed to the "R/C Tank Combat" group. >>> To post a message, send email to [email protected] To >>> unsubscribe, send email to [email protected] >>> Visit the group at http://groups.google.com/group/rctankcombat >>> >>> -- >>> You are currently subscribed to the "R/C Tank Combat" group. >>> To post a message, send email to [email protected] >>> To unsubscribe, send email to [email protected] >>> Visit the group at http://groups.google.com/group/rctankcombat >> >> >> >> -- >> Clark in Georgia >> >> -- >> You are currently subscribed to the "R/C Tank Combat" group. >> To post a message, send email to [email protected] >> To unsubscribe, send email to [email protected] >> Visit the group at http://groups.google.com/group/rctankcombat > > -- > You are currently subscribed to the "R/C Tank Combat" group. > To post a message, send email to [email protected] > To unsubscribe, send email to [email protected] > Visit the group at http://groups.google.com/group/rctankcombat
-- Clark in Georgia -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to [email protected] To unsubscribe, send email to [email protected] Visit the group at http://groups.google.com/group/rctankcombat
