ACR MLG GOT A BODY OVERHEAT WARNING AT ROTATION. TKOF CONTINUED.

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DEPARTING R34L; SEA; RWY HDG PROC. TKOF ROLL NORMAL. APCHING V1; CAUTION LIGHTS ILLUMINATED FOR R WING BODY OVERHEAT. AFTER POSITIVE RATE/GEAR UP; THE CAPT TOOK CTL OF THE ACFT. WHILE CONTINUING THE TKOF/CLB AS PER PROC FOR A WARNING/CAUTION ANYTIME ABOVE 80 KTS; TAKING CTL OF THE ACFT JUST AFTER GEAR UP IS NOT PER PROC. IN FACT; THE CAPT HAD PREVIOUSLY BRIEFED ME TO THE CONTRARY. 'THE PF SHOULD REMAIN FLYING THE ACFT TO A SAFE ALT AND TIME'; THE CAPT (AS WELL AS THE MANUAL) SO STATED. THIS IS PRECISELY MY POINT. AS A RESULT OF THEIR ACTIONS; AND THE TIMING; THE CAPT WAS 'BEHIND' THE AIRPLANE; AND OVERLOADED. CONFUSION BEGAN WHEN I HAD ALREADY HANDLED THE PROC; AND I WAS ATTEMPTING TO ASSIST HIM IN FLYING THE ACFT. I DIDN'T FEEL THAT THIS WAS A SAFE DEP. IN FACT I ONLY FELT BETTER WHEN THE CAPT ENGAGED THE AUTOPLT; 'CAUGHT UP' TO THE AIRPLANE; AND DELEGATED THE ABNORMAL PROC. FOR FUTURE RESOLUTION; I FEEL THAT IN TRAINING AND LINE FLYING; THAT IT BE STRESSED THAT WHOMEVER IS FLYING THE ACFT CONTINUE FLYING THE ACFT UNTIL A SAFE ALT/TIME HAS BEEN REACHED. THIS IS SIMPLE -- AND MOST IMPORTANTLY; SAFER.