Giant 20' x 3' x 2' router build

[charlieuk]

I have decided to use a planetary gearbox for the x axis which will be direct drive on to the rack and also to use a spring tensioned mount for this. However i cant seam to find anything suitable alredy available unfortunately.

i have done a very crude mock up to get the ruff idea and to cheque for space ect.

Can any one give me any suggestions on how would be best to do the pivot on it, im thinking maybe i need some sort of sealed barring in there to keep it moving smoothly all be it hopefully only fractions of a mm.

Allso any other suggestions to the design that may be needed as i am pretty much just making up what i think will work from my head.

( sorry i cant figure why the pictures seam to rotate them selfs around)