How to determine pulleys for motor mill

I got my mm3-2.0 and a brand new.. Fully enclosed motor.. 1725 rpm 60 hz
Now how do I know which pulley and sheaves to get ?

I don't know how to do that calculator ?

I know nothing about motors

Some one correct me if I am wrong but a 10:1 ratio, i.e. 10" on mill shaft and 1"
on the motor shaft should get you down to around 173 rpm.

A few years ago, I used that same calculator for my build:

Powered Driver Pulley Diameter: 1.05" small sheave
Driven Object Pulley Diameter: 9.55" large sheave
Belt Length: 44" L belt
Input (Driver) RPM: 1725 dryer motor
Resulting Output (Driven) RPM: 188.025

+1 On Copbrew133 & michaeltrego. CrankyBeaverBrewery if your new motors rpm is 1725 and you put the (for example) 1" pulley on the motor and the 10" pulley on the MM3 your new RPM would be around 172.

Your other option is to get a 10:1 90 degree gear box (ebay or surplus) and a love joy coupler from McMaster Carr and hook up your mill directly

Here is a link and this one too to a bunch of different ways people motorized their mills!

Great.. Gunna go buy those today.. And a 44" L belt eh ? Alrighty then