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Old 02 July 2009, 07:10   #51
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Country: UK - England
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The Zodiac Futura MK2 takes a longshaft and the MK2c takes a short shaft.

In my opinion The best Futura setup would be a 30,40 or 50hp 2 stroke (Yammy) on a pre 2002 Futura when the went to the big tubes due to the added weight of 4 strokes.

Mine is the latest shape but with a ultralight version of the 50hp 2 stroke Yammy and it goes about the same as my old 96 Futura with a 30hp yammy 2 stroke.

I would recommend changing the 20hp honda for a 2 stroke 30hp and above. Watch out for e-tec's as although they are 2 strokes the smaller engines dont have very good power to weight. If you are going to stick with a 4 stroke on the future you will need something like a 50hp to shove it along ok. If you are going to sit and control with a tiller you will always have that same issue with weight distribution.

All the best

G
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Old 14 July 2009, 22:57   #52
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need for speed

I have the same zodiac...1997 futura mkII, aluminum floor, console. I have a 1990 2 stroke yamaha 50hp on it....no tilt/trim. I am trying to figure out what my approx max speed should be. I have seen 35mph on the GPS with just me in the boat and motor manually trimmed quite high. Trying to figure out if I can get even more out of it?
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Old 15 July 2009, 11:59   #53
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I would have expected a higher top speed than 35mph, kerrib.

Weight distribution, prop, trim???
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Old 15 July 2009, 13:40   #54
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Sharkbyte
i only get 22knots (4.1m + 30 hp yam 2 stroke)
alone, various trim positions, overinflated, very flat sea
Do you think this is a normal max speed?
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Old 15 July 2009, 20:34   #55
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Quote:
Originally Posted by Sharkbyte View Post
I would have expected a higher top speed than 35mph, kerrib.

Weight distribution, prop, trim???
I am going to try maybe a 17 pitch prop, cause I have no issue out of the hole. Because I have only manual trim, I was also going to try trimming the motor high and then maybe add a hydrofoil to limit cavitation. I am thinking the high pitch prop and hydrofoil may bring me up in top speed.
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Old 25 July 2009, 08:03   #56
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Country: USA
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Boat name: MK2C Futura 3.7
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Since we are speaking of speed... how is my setup?

I, per the help, suggestions, & tips from you folks picked up a Zodiac Futura MKIIC (3.8m / 12.5ft) with a Nissan 40 Plus 2 Stroke, stock aluminum prop of 11.4 pitch - 12 inch dia.

On somewhat of calm water 1ft. chop, I am getting a top speed of 29.5 knots / 34 mph at 5850 - 5900 rpm. This is with a full tank of gas, my 6' 1" 235 lb self and my 8 yr old son at 70 lbs in it. I clocked the speed with my Garmin handheld Colorado 400c GPS (love this thing BTW).

Is the speed I am getting as expected? _________________

Any advice, tips, or suggestions for what I am experiencing in regards to speed or rpm?______________

Any chance of getting any better top speed... don't get me wrong, going 34 mph seems quite sufficient, but as men... we always want more?________________

I have swithced over to Amsoil synthetic lubrication for the lower unit and mix... supposed to be the best out there for performance & outdrive longevity...

I have to say, this little Zodiac with the 40hp 2-stroke, when you nail it to jump on plain... my 8yr old little guy's eyeballs nearly popped out of their sockets. The boat pretty much stands up on it's transom 90 deg's. He didn't like that at first and wanted me to do a gradual acceleration... I explained that it takes longer and prolongs the bow being up in the air opposed to just nailing it and 2 seconds later we are running flat again. He has grown to love the associated adrenalin of getting it on plane quickly... "nail it Dad"!





Thanks in advance for any advice...
Edmund
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Old 25 July 2009, 11:06   #57
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I have a MK11 Futura, older style, with a 40 hp Nissan 3 cyl EPTO. I hit 30mph on the GPS with a full load. I am running a heavier set up than you for sure. I think 34 mph is a pretty good top speed. Even with the speed tubes a SIB is not the most efficient hull surface, so resistance builds up fast. Yes, The Futura had a lot of bowrise when I got it, had the battery and gas tank set up at the transom like you do. Moved my gas tank up forward and strapped my battery under the seat (cam strap to the mounting rails on each side). Getting some of my weight forward reallly tamed the bow rise. Added Smart Tabs and they really do make a big difference. Finally went all out and made a permanent front bench that accomodates my 60lb AGM battery and a custom gas tank (opened up the space on the front floor board where I strapped down my plastic tank). The Zodiac handles soooo much better with a properly balanced load and tabs. At the very least you might consider moving the tank and battery forward if possible.
Initially just strapped the plastic tank down forward, now I use this set up to really open up floor space (has a great hole shot with minimal bow rise too)
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Old 25 July 2009, 11:51   #58
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There's certainly been a few references to weight distribution in this thread.

In our experience this was by far and away the biggest influence on our boats handling and performance. To give you an idea, the bowbag (anchor, warp, ods and sods) weighs in at around the same weight as the outboard. The fuel tank is always brimmed, and sits just infront of the console.

Catch up with you guys later, off out fishing for the night.
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Old 25 July 2009, 12:22   #59
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Smart Tabs...... what are they, like trim tabs?

Quote:
Originally Posted by kelson View Post
I have a MK11 Futura, older style, with a 40 hp Nissan 3 cyl EPTO. I hit 30mph on the GPS with a full load. I am running a heavier set up than you for sure. I think 34 mph is a pretty good top speed. Even with the speed tubes a SIB is not the most efficient hull surface, so resistance builds up fast. Yes, The Futura had a lot of bowrise when I got it, had the battery and gas tank set up at the transom like you do. Moved my gas tank up forward and strapped my battery under the seat (cam strap to the mounting rails on each side). Getting some of my weight forward reallly tamed the bow rise. Added Smart Tabs and they really do make a big difference. Finally went all out and made a permanent front bench that accomodates my 60lb AGM battery and a custom gas tank (opened up the space on the front floor board where I strapped down my plastic tank). The Zodiac handles soooo much better with a properly balanced load and tabs. At the very least you might consider moving the tank and battery forward if possible.
Initially just strapped the plastic tank down forward, now I use this set up to really open up floor space (has a great hole shot with minimal bow rise too)
Thank You for this info... my Futura being the compact 3.8 / 12.5 ft version lessens the bow weight even more. It's all back heavy no doubt. If my son (8) was old enough, i'd have him get it on plane while my 235 lb's sat at the bow.

So these Smart Tabs, what are they like trim tabs?________________

Really make a difference, even for just adding them with my currrent weight distribution on the Futura? _________________

Any pictures and mfg. info on them, model number, etc.? __________________

Thank You!
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Old 25 July 2009, 16:19   #60
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Hmmmm, It really did take a combination of moves to get the handling I expected from my Futura. Strapping the gas tank down up forward and moving the battery to just in front of the bench seat probably had the biggest effect. The bow rise was much better and it's pretty easy to do with the track system on the zodiac. I made my own track guides out of sail stops and d rings. Through bolted a couple of footmans loops on the wood floorboard to strap down the gas tank (counter sunk on the bottom to avoid abrading the boat). A long gas line, a couple of cam straps and your set! The tabs sure do help. If I forget to lower them it is instantly apparent when I throttle up. But would they work well with a full load aft? I never really tried it, but I would expect that they would help. It all depends on what you are comfortable with. When I tow wakeboarders off my short pole I want to see where I'm going and not stand the boat on end. So it was worth it to do everything I needed to as far as balancing my load and trim tabs. It isn't necessary to do everything right off. The Futura is a lot of fun straight off. But I am much happier with the vessel after getting my weight balanced. Here is a link to West Marine's web site that lists the Smart Tabs. http://www.westmarine.com/webapp/wcs...key=SiteSearch

gotta love that track system

the easy battery move (60lb AGM battery)

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