KITY 636 P/T -need help choosing a flat bed pulley diameter

[RGKVI]

Hi chaps, I'm new to woodworking and I'm just building up my workshop. I've bought a Kity 636 planer off eBay but it has come off the combi kit and does not have a motor. I've sourced a 1.5hp motor but I need to attach it to the flat bed pulley belt.
The Kity Planer is designed to spins at 7000 t/min. My challenge now is to work out the diameter of flat bed pulley. Just wondering if anyone on this forum could help be out here.

 

[CHJ]

Is your Motor 2 or 4 pole? 2850 and 1425 RPM respectively.

Then it's just a case of adjusting the Pulley size ratios to multiply up the motor RPM to be near your spindle RPM.

 

[RGKVI]

Thank you Chaz, on reflection I should bought a 2 pole motor as the spindle RPM = 7000.

The flat bed pulley on the spindle is 50mm, which means my motor pulley would need to be 350mm which is far too big.

 

[Myfordman]

I think your arithmetic might be a bit adrift?

Or maybe you have a 6 pole motor 960 rpm?