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Old 02 July 2009, 09:35   #11
Member
 
Country: USA
Town: Great Lakes
Boat name: MK2C Futura 3.7
Make: Zodiac
Length: 3m +
Engine: Nissan 40hp Outboard
Join Date: Jun 2009
Posts: 19
GOT IT! Here she is... my Futura MK2C

I want to Thank those of you who took valuable time out of your day or night to assist me with my questions and ultimate decision to make my purchase... here are some pictures:
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Old 02 July 2009, 10:04   #12
Member
 
Country: USA
Town: Great Lakes
Boat name: MK2C Futura 3.7
Make: Zodiac
Length: 3m +
Engine: Nissan 40hp Outboard
Join Date: Jun 2009
Posts: 19
Now some questions..... Futura MK2 C

What is the optimal air pressure (PSI) to use to fill it up properly? _________

With my Futura MK2 C setup with the Nissan 40 hp short, the stock prop is a 11.4 x 12, what is a good stainless prop to go with and why... stainless will do what for me and is it worth the money, suggestions?________

I also notice that many of you have an additional plate (or rubber extension called???) affixed to the outdrive above the prop... advantages are? _________

Thank You...
Edmund
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Old 02 July 2009, 10:15   #13
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Country: UK - England
Town: North East
Boat name: Sarah Louise
Make: Honwave T38IE
Length: 3m +
Engine: 15 Yamaha, 8 Mariner
Join Date: Jul 2008
Posts: 226
Quote:
Originally Posted by Edmund View Post
I also notice that many of you have an additional plate (or rubber extension called???) affixed to the outdrive above the prop... advantages are? _________

Thank You...
Edmund
A lot of people have hydrofoils (?) or Doel fins (trade name) fitted to the cavitation plate. These provide lift with heavy engines and help keep the bow of the boat down. They also help make the steering lighter.
Or so I am told.
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Old 02 July 2009, 10:54   #14
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Country: Canada
Town: British Columbia
Make: Gemini
Length: 4m +
Engine: 40hp 2 str
Join Date: Oct 2003
Posts: 2,151
Quote:
Originally Posted by Edmund View Post
What is the optimal air pressure (PSI) to use to fill it up properly? _________

With my Futura MK2 C setup with the Nissan 40 hp short, the stock prop is a 11.4 x 12, what is a good stainless prop to go with and why... stainless will do what for me and is it worth the money, suggestions?________

I also notice that many of you have an additional plate (or rubber extension called???) affixed to the outdrive above the prop... advantages are? _________

Thank You...
Edmund

I'm not sure with the PVC tubes, but with hypalon, the main sponsons should be at 3.4 PSI. PVC is often a bit higher since it does not stretch as much as hypalon does. The speed tubes may be a bit higher. Best to shoot Zodiac USA an email asking them this.

Unless you were running a competition inflatable such as a zapcat/thundercat, I would recommend a regular aluminum prop rather than a stainless steel prop. For the price of one stainless steel prop, you could have about 3 aluminum props (at least one spare prop is essential gear for you to have on board at all times). If you strike a rock with an aluminum prop, the prop might get trashed, but will most likely spare the drive shafts of the motor. I you do that with a stainless steel prop, there is a very high chance of damaging the drive shafts of the motor. Much cheaper and easier to replace a prop than outboard shafts. Also be sure to keep a prop wrench with you (alongside that spare prop).

With your 40hp, you will be better off without a hydrofoil. Generally a hydrofoil can be useful if the outboard has difficulty getting a boat on plane. This simply will not be the case with your setup. The downside of the hydrofoil is that it would reduce your top speed. Additionally it is awkwardly bulky
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