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I have to drill for speed/temp/depth - where is the best place
Hi again,
My speed/depth/temp sensor needs to be immersed.
What is the best location to put a hull penetration for the integrity of the boat/function of the speed sensor?
Many thanks.
Martion O'Shannessy24-May-2013    Edit    Delete 
Re: I have to drill for speed/temp/depth - where is the best place
Sorry Martin, I didn't read the question correctly.
I found the best location for the speed sensor was under the seat just forward of the galley, 300 mm from the centreline where the hull is still flattish.The RL28 hull angle is too steep forward of the keel where the manufacturers recommend, whereas around the galley area is far enough back from the keel to avoid too much turbulance. Further forward is probably better for the depth readings but there is nowhere suitable for mounting it without encroaching on foot room under the table.

You do need good access to the transducer so it can be removed quckly for cleaning, without flooding the boat, even if the transducer housing has a valve.

But you should calibrate it with a GPS at slow and high speed. You will probably find it under-reads at higher speeds.
Keith Merkley24-May-2013    Edit    Delete 
Re: I have to drill for speed/temp/depth - where is the best place
Thanks for that - are you referring to an RL 28 or an RL24? - mine is an RL24 MkIV. Who can advise me on the best place in an RL24?
Thanks.
Martin.

Martin O'Shannessy26-May-2013    Edit    Delete 
Re: I have to drill for speed/temp/depth - where is the best place
I have a depth sensor in the port forward locker secured with silicon and pointing forward ahead of the keel. There is no hole needed stuck on the solid fibreglass hull.

My paddle wheel is mounted in the engine well to the port of the well opening so its outside the hull in the wet well where it can't leak.
Greg 26-May-2013    Edit    Delete 

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