As you all know, the N2 tacho-generator is required on engine 1 for the proper operation of the LANDING GEAR TRANSFER VALVE.
This is a no go in the MEL.
In case of left engine failure, the landing gear would not retract fast enough to guarantee the minimum gradient at takeoff.
Talking to an instructor some time ago, he said in the AFM there's a table for engine out gradient with gear down...
I couldn't find it.
Maybe the page was missing, but I doubt it.
Do you have it?
LEM