METO
I agree with Jim.
You need full power for;
1) double check fuel flow (check manual) mine is 140 lbs/hr.
2) provide sufficient fuel cooling. - yes you waste fuel.
3) avoid preignition "knock"
4) insure engines are developing power.
5) insure the engine is still developing pwr at V1
6) feels good <G>
Should stay that way until;
1)temp limits reached
2)safe altitude
3)obstruction clearance
or
4)you migrate into cruise climb. (generally ~1k ft .
most important you have a *reference* for fuel flow / cht/ egt on the roll (more important with turbos).
bob
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