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Old 04-07-2011, 14:52   #1
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Question Twin Engine Conversion for Pre-1994 Gemini

I like my Gemini 3200. I live in the Keys and cruise the Bahamas. The shallow draft is ideal. My only concern is that my outboard version is difficult to handle in wind and current. A friend suggested I think about converting to twin outboards. Has anyone tried this? If so were they successful?
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Old 04-07-2011, 15:48   #2
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Re: Twin engine converstion for pre 1994 Gemini

There is one guy on the Yahoo Gemini site that has.

I can't remember his hull number.

It cost a bit for him to do it but he is happy.
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Old 04-07-2011, 15:48   #3
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Re: Twin engine converstion for pre 1994 Gemini

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Originally Posted by Epiphany View Post
I like my Gemini 3200. I live in the Keys and cruise the Bahamas. The shallow draft is ideal. My only concern is that my outboard version is difficult to handle in wind and current. A friend suggested I think about converting to twin outboards. Has anyone tried this? If so were they successful?
With the transom hung rudders I don't think you could get enough separation between outboards to gain the advantage of having twin outboards. We had a Honda 40 on our old Gemini 3200 and it provided plenty of control as it turned with the rudders. Is yours setup the same way?
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Old 04-07-2011, 16:04   #4
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Re: Twin engine converstion for pre 1994 Gemini

found this.

I ditched the entire diesel / drive leg
> thing and went with twin 15 HP Hondas on brackets with jack plates. A
> much more modern design.
>
> Pat N Matt Cat # 823
> Big Pine Key FL.


Are you a member of the Yahoo site.

If you were you would get a pretty fast answer. There are pics of it too.
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Old 05-07-2011, 05:07   #5
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Re: Twin engine converstion for pre 1994 Gemini

I would love to see the # 823 conversion or at least some images. If the vessel is in Big Pine, I'm Islamorada which is not far away. My hull # is 396. I have a 1992 3200.
I am a new memeber and this is my first attempt so help me out if I don't follow protocol.
Thanks! Dave
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Old 05-07-2011, 13:35   #6
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Re: Twin engine converstion for pre 1994 Gemini

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I would love to see the # 823 conversion or at least some images. If the vessel is in Big Pine, I'm Islamorada which is not far away. My hull # is 396. I have a 1992 3200.
I am a new memeber and this is my first attempt so help me out if I don't follow protocol.
Thanks! Dave

Dave,

If you are a member of the Yahoo site then look in the albums or start a thread and I am sure you will soon be led to the discussion and the pics.
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Old 06-07-2011, 05:12   #7
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Re: Twin Engine Conversion for Pre 1994 Gemini

I joined the Yahoo site and started a thread. I found one conversion, Starlight 318 in the photos but not 823. Thanks for the advice.
Dave
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Old 06-07-2011, 09:15   #8
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Re: Twin Engine Conversion for Pre 1994 Gemini

Disel is good and gas goes boom I've seen one conversion on a 105MC to one 40 hp honda, It looked good. I still like my little disel.
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Old 09-07-2011, 12:10   #9
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Re: Twin Engine Conversion for Pre 1994 Gemini

Sorry, webejammin, the gas-goes-boom theory hasn't proved itself in practice. No gas cat has blown up.
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Old 10-07-2011, 11:14   #10
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Re: Twin Engine Conversion for Pre 1994 Gemini

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No gas cat has blown up.
Sorry just joking a little.

We could use more horse power and lots more speed this year, sence the Columbia River is still running almost 3 times it's norm CFS (cubic ft per second) @ over 500,000 cfs. I wonder just how fast a couple of outboards could push our boat, we would need at least 15 mph to get up to the locks at the 4 dams. Currently the tug boats are having to only push 2 barges instead of the normal 4 barges up stream and it looks like were land locked for this season. I know 15 mph is a bit over the hull speed but not much, what do you think 2 - 70 hp 4 strokes at 10 gal an hour full speed ?
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Old 10-07-2011, 12:17   #11
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Re: Twin Engine Conversion for Pre 1994 Gemini

The weight of the extra fuel would probably bring you well below the 15 mph you need. On a semi-serious note I wonder what kind of speed I could get with twin 25s.
Dave
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