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Pump flow

 
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sandman



Joined: 15 Jun 2005
Posts: 260
Location: The captains table

PostPosted: Sun Jun 11, 2006 12:06 am    Post subject: Pump flow Reply with quote

Gentlemen,
Testing in my boat found that turning left produced what seemed to be a load down of the engine, as in the revs would drop 200 rpm. turning right though brings my revs up. Is there some thing going on with the way the water is traveling through my pump making it flow easier in one direction than the other? Would a straightening type of vane help out? Would it be reversed if I were in Australia?

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2jokejet



Joined: 21 Dec 2005
Posts: 27
Location: Pearl Beach Australia & Part time New Zealander

PostPosted: Sun Jun 11, 2006 1:11 am    Post subject: . Reply with quote

sure your throttle cable is not hung up on something? 200rpm is quite a chunk of hp?
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sandman



Joined: 15 Jun 2005
Posts: 260
Location: The captains table

PostPosted: Sun Jun 11, 2006 11:34 am    Post subject: Reply with quote

2joke
Maybe it is a float bowl issue?? Investigation to follow!

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allblowdup



Joined: 20 Jun 2005
Posts: 135
Location: Grande Prairie

PostPosted: Mon Jun 12, 2006 9:08 am    Post subject: Reply with quote

we see the same thing. I am not sure but it can have something to do with the rotation of the engine and the angle that the water is forced through the grate when you turn. Also we find that turning right is a little tougher than left is that something that you find also? Is it a tunnel or step tech.
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sandman



Joined: 15 Jun 2005
Posts: 260
Location: The captains table

PostPosted: Mon Jun 12, 2006 1:19 pm    Post subject: Reply with quote

Allblowdup,
It is a step tech, the steering is a little stiff anyway, so I can't really tell if it is easier one way or the other. You guys ever try one of the straightening vane systems that the fella from whitecourt was making? I saw it on a web post a year or so ago, it was an 8 bladed unit made to stop the last bit or rotation, I wonder if it would work for that application?

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