The Mrs aint gonna be happy about this little project!

[r0bsk1]

Originaly i wasnt planning on a 2m X axis and they came up cheap on ebay. Ah well looks like they'll be going back on ebay.

[Jonathan]

Originaly i wasnt planning on a 2m X axis and they came up cheap on ebay. Ah well looks like they'll be going back on ebay.

I'll stop messing about trying to design the rotating ballnut mount to accommodate both size motors and just make it for the 3Nm nema 24's then? :)
Your gantry as drawn will weigh about the same as mine, so you'll be fine with 3Nm on 70V since that's what I use and the system is virtually identical...

Nema23 Stepper Motor 3.1Nm

[r0bsk1]

I'll stop messing about trying to design the rotating ballnut mount to accommodate both size motors and just make it for the 3Nm nema 24's then? :)

Aye! Sounds like a plan!

Is a rotating ballnut on Y OTT too?

[Jonathan]

Is a rotating ballnut on Y OTT too?

It'll cost more than the standard setup and wont really gain anything if you use a 10mm pitch screw. I hope you've not bought the RM2005 already since RM1610 would have been much more suitable for that length, again due to critical speed.