Dear ALL,  I have a query although I am referring to a different brand of P51 butstill 60 size.  I have World Model P51 size 60 (Model A155), installeda 3-blade prop 14 x 9, installed an engine OS 110FS-a.  Plane weightapprox 4.2 KG.  I think OS 110FS-a RPM range is from 2000 to 11000.
Someone told me not to reach 80% of the max RPM at ground (full throttle) which another expert confirm the RPM issue.

At ground, RPM full throttle is 8000.

Can I have your technical expertise if my set-up (prop, enginem size)is alright or shall I go back to 2-blade 15x8?  3-blade looks nicer.

Thanks.
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