With such a great design tool why not make a design that does not have the pedaling alignment problem. To further explain. When riding down to road and go into a turn the riders feet will not be in an optimum alignment with the pedals and will not be able to apply full power during the turn. I find it as frustrating as riding a big wheel or a tricycle as a child. I am currently working on a design that locks the seat with the front wheel and the pivot is behind. In this configuration full power will be possible even in a sharp turn. you can see what I mean with your design just by adding a mannequin and putting the frame in a turn. I do not mean to offend any one in the Python group I am just stating my opinion I have found the group and the work thus far to be helpful in my own design. On 1/7/07, Henry Thomas <whpthomas@xxxxxxxxx> wrote:
After everyone's for your suggestions I had to do some major modifications to my Jetrike plans. The big changes include, . Regular python drive train to fix the chainline problems, . A Front derailleur post on the BB mount, . Stiffer triangulated frame . Stiffer seat mounts . 3mm plate on the rocker arm end caps . Improved tilt geometry I have come up with a much better simulation, that allowed me to isolate each parameter and test its effect on the self-centering independently. This gave me a much better understanding of what influences it the most. I plan to write a much more detailed email in a few days to report on what I have learned. There is still the interaction between the front steering pivot and the tilting which I haven't a clue about. I have uploaded the latest revision to my web site, you can download them here http://jetrike.com/Jetrike-Plans.pdf I am off to get the materials today! So I will keep you posted. -h
-- The truth will set you free or Get you clobbered