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Set back pump

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Riverrat817

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« on: December 29, 2016, 05:06:36 PM »
Quick question for all you smart guys out there. I have seen a lot of pumps set back but never seen one set back this far. Any reason for this?


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Derrick

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« Reply #1 on: December 29, 2016, 05:13:08 PM »
That's a gullwing. Gullwings have angled transoms and they appear to not be as far out as other boats. It depends on what you're using it. My bahner when I did it I went 4" back from the original position to leave a little bit of connection in the back of the hull. Reasoning is for the abuse on the river. It helps the strength of the boat. Not a lot of info on set backs. I did a lot of research before I did mine. Some hulls like it and some will get scary riding dry.


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Derrick

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« Reply #2 on: December 29, 2016, 05:14:21 PM »
This was with a 4" set back


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Riverrat817

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« Reply #3 on: December 29, 2016, 08:38:06 PM »
Thanks for the info.


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Derrick

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« Reply #4 on: December 29, 2016, 09:20:28 PM »
If that helped any. I'm sure some other people will chime in


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Derrick

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« Reply #5 on: December 29, 2016, 09:22:22 PM »
My buddy's Tahiti is all the was out the back


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Capnjax

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« Reply #6 on: January 23, 2017, 08:55:41 PM »
Who can I take my boat to and have this done? I live in Las Angeles

Flusher

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« Reply #7 on: January 23, 2017, 09:41:56 PM »
Who can I take my boat to and have this done? I live in Las Angeles

What kind of boat?  Horsepower?  Your intended usage?

It's quite a bit involved and pricey.
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Flusher

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« Reply #8 on: January 23, 2017, 10:17:02 PM »
What kind of boat?  Horsepower?  Your intended usage?

It's quite a bit involved and pricey.

Also, what is your current engine mounting system?  Shoe & ride plate?

Reason I ask is, usually we don't do JUST a setback.  It opens the proverbial can-o-worms.

Moving the pump back necessitates new transom plates or a modified transom adapter.

The keel in front of the intake needs glassed in.

You will need a longer drive line and/or it would be a good time to install a Jet-A-Away.

The relocated pump can play havoc with drive line angle.  Sometimes you get lucky because a longer drive shaft can have minimal effect on angle or it can just come out all wrong, forcing moving the engine.

Hope I didn't scare you away...
"I want to roll with my brother Joe" - Joe Bateman - January 29, 1950 ~ November 27, 2013

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« Reply #9 on: January 24, 2017, 09:18:48 AM »
Try a snoot or bowl to snoot spacer... Those help before moving the entire pump.


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