Wow, absolutely *fantastic* idea for the pivot!! I could see making a pivoting but clampable 1/4" mounting plate for coarse adjustment and fine adjustment using the rod ends, as you state, allowing you to find your optimum pivot angle. Then once the optimum angle is found on this research vehicle you only have to remake a small frame piece (with the 1/4" mounting plate) to replace the adjustable version. Even that last part is optional. In fact even all the former isn't required if you're close initially. It's so beautiful in it's simplicity! Cheers Daryl -----Original Message----- From: python-bounce@xxxxxxxxxxxxx [mailto:python-bounce@xxxxxxxxxxxxx] On Behalf Of 25hz Sent: Monday, June 13, 2005 10:31 PM To: python@xxxxxxxxxxxxx Subject: [python] Re: pivot angle ...snip I am already planning the 2nd python, and went out and bought some 12.7mm female rod ends to use as the pivots - similar to what Mike Channon did, but with a little twist. I made a quick 3D version of it and U/L'd it here: http://bikes.jkcc.com/python%20pivot%20mk2.jpg snip...