Reading the head porting thread got me thinking about a custom 4th and 5th axis for a Fadal. I know we would need a M code card and two std axis amplifiers plus wiring for a 5th axis on a Fadal that was prewired for 4th axis (correct). We would then need a couple of Fadal shorty servo motors and a custom coupling unit that attached to a fixture. Would we need a massive gear reduction like the VH65 has?

Rino sells a 4/5 for there mills that they sell to the automotive industry they use a centroid control I think seem's like it is a lot taller than a Hass trunion I haven't seen a stand alone Hass 4/5 but they might be an option or If your ambitous you could build your own simoutanious 4and five I would think takes a lot of computer power to do the number's Let me know what you find out Kevin

CHECK THIS OUT!! This is Pro-heads 5 axis setup. It is built from a Fadal stubby servo, 90:1 reduction and backlash tensioner and the stubby motor actually sits inside the thu hole of a fadal driven 300MM japanese large rotary table. This is out of this world! The owner Richard actually did the work about 10 years ago.
http://i2.photobucket.com/albums/y29/bulltear/PANA0020.jpg
http://i2.photobucket.com/albums/y29/bulltear/DSC0041.jpg
http://i2.photobucket.com/albums/y29/bulltear/DSC0038.jpg

http://i2.photobucket.com/albums/y29/bulltear/DSC0030.jpg
http://i2.photobucket.com/albums/y29/bulltear/DSC0029.jpg


Here is a video of it running!

http://www.proheads.com/files/dscf0893.avi

I like this setup!

I like the Centroid setup as well. I wonder if their is a way to use two Fadal stubby servos with a custom Centroid like setup.

http://www.automotivemachine.com/2414%20(Custom).JPG
http://www.millportmachines.com/images/redrhino_240.jpg
http://www.centroidcnc.com/images/cnc_cylinder/tilt_table_800.jpg