How about power after rotation?

[Bob Cook]

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