Clutch help / advice , first mini bike project

#1
Hey guys, I'm in the process of building my first mini bike,

I bought this clutch and received it today and put it on my 212cc predator engine, I noticed it has "green" springs little did I know this is the strength of the spring and determines what RPM it grabs the clutch(i think?)

The spring/shoe chart that came with the clutch says it engages at 4000rpm, but that can't be right I ran the engine and saw it engage at about half throttle. I don't have my frame yet so I can't test ride it to see how it works.

Will this clutch work or do I need to buy a new lighter clutch?

What RPM should my clutch engage at on my mini bike?

Magnum Racing Go Kart Clutch APRC11 11 Tooth 3 4" Bore Light Shoes | eBay

The rear sprocket will be 60t on 6" wheels 11" in height for the tire.
 
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