Dual ballnuts for the X3, limiting travel?

[phantomcow2]

Here is the link to the purchasing page. I think the guy could do a better job making the website more attractive!
http://www.bright.net/~agarb/STMD/Purchase.html

I got all the parts today, so tonight I play with non Rohs compliant solder

[Ron111]

phantomcow2,

Thinking about the preloaded ball nuts and losing travel. I hope I can communicate this correctly. First lets make sure that I understand where the loss of travel occurs. I think that the loss of travel occurs when the bearing block mount is hit by the second ball screw.

If this is correct a simple solution would be to offset the bearing mount. (Here's where the communication may be difficult to understand) You know where most conversions bolt the bearing mount right on the end of the table, what if you essentially placed a spacer (with a hole milled out large enough where the second ball screw could pass through) between the table and the bearing mount of say 1 inch for example. Then the table could travel that extra inch (or so) before the second nut hit the backside if the bearing block.

Now with the same concept, Instead of using a spacer, you could pocket out area where the second ball screw could travel in the recess area of a large, wide, single block bearing mount. To do this your ball screw would need to be longer.

What do you think?

Ron