60hp 4-S Fuel Consumption

[swof63]

Moot point. The op will not be placing high thrust and normal motors on different boats, the question will relate to performance on the same hull. For any given hull, you would prop the motors to reach max wot as close as you can. This will result in similar top speeds, not 40-70 km/hr difference. Under these circumstances the the xtra drag of the larger gear case will result in a slightly higher l/nm consumption and possibly a slightly lower top speed. This of course assumes the magic fairy is having a holiday. There will be other differences also - the high thrust gearcase will be turning a higher pitch prop thus creating more stern lift, yet the extra drag of the larger gearcase will result in a more nose-down running attitude.


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[BigE]

Hi Gimme
been away (holidays) so i haven't responded

not sure if any of the replies have helped for what it is worth if i was doing it again i would be going for the standard gear case over the big foot or CT gearbox.
BigE