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PostPosted: Tue Aug 24, 2010 9:33 am 
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i have ordered building plans for the 19" barrelback, and i have a mercruiser 5litres with bravo 2 z drive, anybody who had done this before? is there room for it? and how will it handle? i think its a litle to powerfull but thats ok , im the only one sailing it :-)

i will ofcourse make it 20 feet.

is it crazy?


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PostPosted: Tue Aug 24, 2010 10:13 am 
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Location: Branson, MO
If you are talking about the Bravo II outdrive, I can tell you emphatically that the Barrelback does NOT have room for the engine in the rear of the boat.

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PostPosted: Tue Aug 24, 2010 10:16 am 
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:( what a shame :( i was thinking on steering and everything would be a lot easier, and the handling would be ok...


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PostPosted: Tue Aug 24, 2010 11:02 am 
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norway34 wrote:
:( what a shame :( i was thinking on steering and everything would be a lot easier, and the handling would be ok...



Oh, you are right. Outdrives are a lot easier to steer in tight quarters (especially in reverse) than a inline.

The Riviera only has 12" of clearance between the motor stringers and deck at the transom. The Barrelback is even tighter. There just is no way to move the engine to the rear.

dave

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PostPosted: Tue Aug 24, 2010 12:33 pm 
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http://www.sponbergyachtdesign.com/CC20.htm

this is where i got my inspiration.. it looks like the same shape? :?


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PostPosted: Tue Aug 24, 2010 12:53 pm 
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Look closely at the two designs. The rear cockpit in the BB is a 2 seater. The other is a 3 seater. This means the transom is much wider. The rear deck appears deeper than the BB, also.

Bill

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PostPosted: Tue Aug 24, 2010 11:25 pm 
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yes i can see that now, and the other seems to have a v-shaped keel


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PostPosted: Wed Aug 25, 2010 4:54 am 
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The boat was not designed to have that much weight that far back.
It will not work properly and you will not be happy with the result.

It would be simpler to get a new transmission, no?

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PostPosted: Wed Aug 25, 2010 4:57 am 
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Location: North Carolina
The example has a deeper hull bottom allowing the engine to sit deeper under the decking too. Eric is a nice guy and also comes with a bigger ticket. He caters to custom work and will design you anything that your heart desires. But love and lusts don't always tell the tale of the tape either or the price at the end of the day either. :lol: :lol: I also bet that if you want to you can use the block and then purchase the gear and convert the engine to a straight inboard setup.
edited to say thanks Bob for popping in and adding your experience and imput. Hope your summer has been a good one..


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PostPosted: Thu Aug 26, 2010 12:35 pm 
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i just thougt of the handling and there will only be one hole in the hull... i could get a gearbox and get a straight setup.. but i like challenges 8)


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PostPosted: Thu Aug 26, 2010 12:46 pm 
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I'll add a bit more..

My proudest moment on launch day was this:
Image

Image

I painted the waterline to the design specifications 3 years before the hull ever hit water.
The boat is 23' long. It sits in the water perfectly as designed and handles as such (I even had independent confirmation from Billy C. who has much more experience than I that the boat handles perfectly).

The reason is sits well in the water is that the marine architect that designed the boat takes all of the weights and displacements into account in the design. if you move the engine back 4 feet, you boat will not sit on the designed water line and it will not work right.

Better to change the motor - or get plans that have a rear mounted engine as yours.

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http://nutshellpramconstruction.shutterfly.com/

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PostPosted: Sat Aug 28, 2010 6:43 am 
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nice boat bob :) looks awsome

cant get it out of my head :? :?

what about a extended driveshaft from sentermounted engine to the outdrive?

its no problem to get a gearbox and do a straight setup..

but still :wink: better handling and exhaust under water, and i would have the tilt function..


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PostPosted: Sat Aug 28, 2010 7:58 am 
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I've seen production boats,not Glen-L done that way,so it can be done.

I don't know how to set one up though,if the bearing at the front inside of the out drive would take the extra stress, or if it would need extra support along the shaft some where

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PostPosted: Sat Aug 28, 2010 9:01 pm 
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hmm it would probably need support in both ends.. but i think it could be done :)
its more work, but it would be one of a kind :lol:


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