Re: A french product design student is looking for an internship

From: Jim Thompson (thegreatone_at_example.com)
Date: 03/12/05 

Date: Sat, 12 Mar 2005 13:39:44 -0700

On Sat, 12 Mar 2005 12:32:24 -0800, John Larkin
<jjSNIPlarkin@highTHISlandPLEASEtechnology.XXX> wrote:

>On Sat, 12 Mar 2005 11:36:55 -0800, Tim Wescott
><tim@wescottnospamdesign.com> wrote:
>
>>John Larkin wrote:
>>>
>>> This looks unstable:
>>>
>>> http://www.isd-valenciennes.com/upload/file34.jpg
>>>
>>> Has anybody actually built one?
>>>
>>I've seen similar things with two rear wheels.
>>
>>If you look carefully you'll see that the front axle is pivoted at it's
>>center, so the thing will ride like a motorcycle until you hit the tilt
>>limit on that pivot -- at that point I imagine that all hell will break
>>loose unless you have a _very_ skilled rider who can compensate for the
>>change in the effective pivot point while keeping the thing going.
>
>Yeah, I noticed the same thing; ghastly. There's nothing like a sudden
>nonlinearity to make motorcycling interesting. My first wife had a
>Kawasaki 500 (the featherweight 3-cylinder 2-cycle) that would do 0-60
>in 4 seconds at the top of second gear: whoop/shift/whooooop, 60 mph.
>At about 80 mph, the suspension went unstable and tended to toss
>riders into ditches, and every once in a while the middle cylinder
>would seize up, so you kept your hand on the clutch lever at all
>times. I had to tear it down and hone it out twice before she totalled
>it and lost her spleen. Good riddance [1].
>
>John
>
>
>[1] ambiguity intentional.

Gee! John! I don't get your gist ;-)

                                        ...Jim Thompson 

-- 
|  James E.Thompson, P.E.                           |    mens     |
|  Analog Innovations, Inc.                         |     et      |
|  Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    |
|  Phoenix, Arizona            Voice:(480)460-2350  |             |
|  E-mail Address at Website     Fax:(480)460-2142  |  Brass Rat  |
|       http://www.analog-innovations.com           |    1962     |
             
I love to cook with wine.      Sometimes I even put it in the food.

Relevant Pages

  • Re: A french product design student is looking for an internship
    ... >I've seen similar things with two rear wheels. ... >If you look carefully you'll see that the front axle is pivoted at it's ... so the thing will ride like a motorcycle until you hit the tilt ... in 4 seconds at the top of second gear: whoop/shift/whooooop, 60 mph. ...
    (sci.electronics.design)
  • Re: A french product design student is looking for an internship
    ... John Larkin wrote: ... >>I've seen similar things with two rear wheels. ... >>If you look carefully you'll see that the front axle is pivoted at it's ... so the thing will ride like a motorcycle until you hit the tilt ...
    (sci.electronics.design)
  • Re: Chevy truck rear wheels "sticking"
    ... going around corners the rear wheels seem to be ... "sticking," that is they chirp a little like they're not rotating ... rear shoes. ... Not sure what axle you'd have, but on my 3500 with the 14 ...
    (rec.autos.tech)
  • Re: Husqvarna lawn tractors
    ... remove the rear wheels when they are mounted right on the drive axle. ... gauge wheels �on the mower deck, ... I have seen some really cheap John Deere mowers. ...
    (alt.home.repair)
  • Re: Another argument for disk brakes?
    ... > Phil Lee writes: ... A clamped axle is not one with threaded ... I thought you were stating that the fork in mention was a motorcycle fork, ...
    (rec.bicycles.tech)
Loading