Angle grinder as engine for belt grinder 
Hi, I was wondering if it is OK to build a belt grinder (50x2000mm, comparable in size to a 2x72), using an angle grinder as the engine. I tried searching online but I couldn't find much information about this.  

I can buy an angle grinder with these specifications:  
- Disc diameter: 230mm (9.05")  
- Power: 2400 watt  
- Voltage: 220V  
- RPM without load: 6600 RPM  

That would be 3.2 horsepower according to google. If I attach a sprocket to the grinder I can easily use that to change the speed.  

Is there a good reason not to go this way? It's a whole lot cheaper than the average engine I can buy and belt grinders are crazy expensive here (cheapest one I can find is 1000 euro's), so I'd like to build one myself since I don't have that kind of money laying around.