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Author Topic:   Yami Hi Thrust 50 4 stroke
Hawaiian Bob posted 03-26-2002 02:10 AM ET (US)   Profile for Hawaiian Bob   Send Email to Hawaiian Bob  
Any experience with these on a 17
Whaletosh posted 03-26-2002 08:37 AM ET (US)     Profile for Whaletosh    
No experience, but Mercury is packaging the new Montauk with a 60 HP EFI four stroke Bigfoot as an option. If the Bigfoot can work with the new Montauk I can't see why a Hi Thrust wouldn't work well on a 16.
where2 posted 03-26-2002 01:01 PM ET (US)     Profile for where2  Send Email to where2     
Works well on my dad's Houseboat. Turns a 12x12 prop, boat is non-planing and will not plane without 200hp. For moving a displacement hull, the 50HT works like a quiet smooth little champ. Every time I hear it run, I want a 4 stroke on my 15' Sport.
Dick posted 03-26-2002 02:23 PM ET (US)     Profile for Dick  Send Email to Dick     
It is my understanding that the Big Foot/High Thrust motors were designed for pontoon and houseboats, non planing hulls, and on a planing hull will not give the performance of a standard lower unit.
Whaletosh posted 03-26-2002 02:31 PM ET (US)     Profile for Whaletosh    

While they were concieved for use on displacement hulls, they can be used on planing hulls. The 13 Sport comes with a Bigfoot if one gets the 25 4-stroke (which contrary to popular belief is enough for the boat). One can also get the 60 HP Big Foot on the new Montauk. I have also seen a 60 HP 4-stroke Big Foot on classic Montauk, the owner loved it.

Bigshot posted 03-26-2002 02:55 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
I would get the bigfoot on a 17 due to I had a 70 Merc which basically had the 35hp foot and the prop was so tiny the performance was ill. The OMC 50hp 3cyl is in a sense a bigfoot because it has a v4 gearcase as does the 60 & 70(3cyls are nolonger:(

The bigger lower matched with a bigger diameter prop will give you a better cruise. On a pontoon a tiny prop would not have the thrust because a smallfoot would not allow a prop of 12" diameter, therefore manuverability, especially in reverse, would ....suck.

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