[python] Re: driving experience TT

Hi Ray

At 02:37 PM 3/17/05 -0800, you wrote:
>Hi Jürgen,
>
>At 09:52 PM 3/17/2005 +0100, you wrote:
>>Downhill with my TT I take off the feet and try to ride offhand, but the 
>>weight of the bb makes it
>>impossible.
>
>So the wheel wants to fall over?
>
>>I am thinking of building a python with Ray's proposal, 54 degree pivot 
>>and - 8 cm trail
>
>Ah, I feel somewhat useful!
>
>I was thinking today about the pivot, and realized that two small auto tie 
>rod ends from a compact car would work well. They have grease fittings and 
>most importantly, are length adjustable. If one was mounted to the front 
>frame as the top, and the other to the rear frame as the bottom (of the 
>center pivot) then twisting the usual turnbuckle on either would provide 
>easy geometry adjustment. They would not weigh too much extra and would 
>provide a little damping. Still an eventual wear issue, but the infinite 
>adjustability would be perfect for dialing in the "right" angle.
>
>
>Ray
>

I have that feature with my Python as I used rod end bearings for the pivot.
(Picture on the modifications page of the Python web site.)  Unfortunately
they are now adjusted to the extreme to get my angle.  The only adjustment
now available is to steepen the angle. 

I think that auto tie rod ends would work well.  I think they would last a
long time, considering their longevity in the auto.

Regards,

Mike Channon
London, Ontario, Canada 


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