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Old 24 July 2012, 16:43   #1
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Hi all, I have just bought a second hand Ribcraft 4.8 and have a few questions if anyone can help me? I have added photos to try and explain my issues.


What model of fuel tanks would strap here? I have a Plastimo and it moves about a little.


Is the moulding to the deck acceptable here, or does it need to be redone somehow?


I presume this is for fitting a anchor light, does anyone know which brand and model would fit here?


Im not too sure what these instruments are for, I think the one in the foreground is for the speedo? Not sure how it would measure speed though?


There seems to be a little bit of play in the steering rack on the back of the engine. Also the boot has perished, where would the best place be to get a replacement?


Any ideas on what instruments were fitted on top? Maybe a fish finder/gps?


The trim gauge doesn't seem to be working properly either.


Photo of the boat.

Sorry for the amount of questions, I would appreciate any help/advise. Thanks.
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Old 24 July 2012, 16:51   #2
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I'll start the ball rolling.

Looks like someone has added that seat pod as an afterthought and failed to get a good colour match. If the grp is bonded down well, then I wouldn't be too worried.

The near sensor is a speed sensor which works by water pressure being forced up a pitot tube. The starboard sensor is a fish finder transducer.
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Old 24 July 2012, 16:52   #3
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Can't help with any of your questions but don't worry - it's a Ribcraft; it will last forever.
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Old 24 July 2012, 16:57   #4
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Originally Posted by GJ0KYZ View Post
it's a Ribcraft; it will last forever.
Oh ya, it'll go on and on...
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Old 24 July 2012, 17:03   #5
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Oh ya, it'll go on and on...
Your just jealous
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Old 24 July 2012, 17:03   #6
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These look like the tanks you need. Not cheap though - note the grove in the centre of its base to help secure in place on your deck


GENUINE Quicksilver Fuel Tank Mariner Mercury Outboard Motor

http://bit.ly/NUobrR

Also the speedo works on a vacuum feed via the pipe connecting it and the gauge.

The round bracket that's been removed looks like the older Garmin 120 fish finder brackets. The square perhaps a navman gps combo as the transducer (in the background of the speedo pic) is a navman one.

The trim fault could b the trim sender unit located within the tilt system on the motor.

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Old 24 July 2012, 17:09   #7
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The light socket looks like an Aqua Signal
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Old 24 July 2012, 17:11   #8
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The trip gauge doesn't work because the trim sender is probably broken, It's a round thingy above the ram at the back, will cost about 70 and should last about a year - Mercury done seem to be able to make trim senders that last any longer.
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Old 24 July 2012, 18:25   #9
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Where does the hose from the pitot go? I can't see a speedo on the console.

If it stops inside your console and is open ended it will send water in!
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Old 24 July 2012, 18:30   #10
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Quote:
Originally Posted by tac123 View Post
Is the moulding to the deck acceptable here, or does it need to be redone somehow?
(i) its ugly which suggests it wasn't done by someone who knew what they were doing or who was in a rush. However if you can't get any flex or movement it is probably OK. (ii) is that just dirt / mould at the back or a split/crack?

Quote:
Im not too sure what these instruments are for, I think the one in the foreground is for the speedo? Not sure how it would measure speed though?
its actually the opposite from what Erin described. As water flows past the opening in the tube (known as a pitot) it creates a vacuum (think Venturi principle) - the faster it flows the harder it sucks. The spedo then measures the pressure to report a speed. They are notoriously unreliable and get block with crap. The GPS has largely made them redundant.
Quote:
There seems to be a little bit of play in the steering rack on the back of the engine. Also the boot has perished, where would the best place be to get a replacement?
What is a 'bit of play'. There is always some slack so it needs someone who knows to feel it its worse than you'd expect. I've never had a boot on mine so its not critical but presumably any outboard dealer could supply.


Quote:
The trim gauge doesn't seem to be working properly either.
possibly the only thing less reliable than a pitot tube! Usually the sensor is just a variable resistor that moves with a small spring loaded lever as the engine goes up / down. If you are lucky it will just be bent out of place, or a loose/corroded connection, but its quite possible that the critical part inside is goosed as they aren't very well sealed.
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