log

[nac]

as my old navico dl160 has given up the ghost i am thinking of buying the clipper dual system. has anyone got one of these and is it true that the diameter of the clipper impeller is smaller than the navico.
nick.

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[AndCur]

Not 100% sure but as far as i can remember its 44mm. I have used a Clipper Duet
for a couple of seasons with out any problems.

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[JimC]

Not sure about impeller diameter, the NASA impeller is ball-shaped and, whether for this or some other reason, it gets fouled less than the wheel-shaped one on the Autohelm ST50 I had before. I have found the NASA Clipper Duet to be a good instrument.

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[Cantata]

If you mean is the diameter of the skin fitting of the Clipper smaller, yes it is, 42mm instead of 50mm. Am making the same change myself, and am pondering what to do. Lazy way is to leave the blank plug in the old Navico fitting and drill a new hole for the Clipper but probably wouldn't impress next surveyor would it. Advice on best way to fill old hole would be welcome!
As mentioned on the forum recently, allgadgets.co.uk have brilliant prices for Clipper stuff.

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[Cantata]

Had an idea after posting previous message. Have checked and found that the Clipper skin fitting is a reasonably snug fit inside the Navico one. I think therefore it's going to be possible to cut the old one flush with the hull inside and out, and fit the new one in the hole that's left, I reckon with plenty of sealant it should be fine.

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[nac]

thank you all for your advice, it is much appreciated. once again the forum comes up trumps. happy christmas to you all.
nick.

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[Guest]

There have been postings previously about the NASA through hull having a weak lip to the fitting ...... personally I have used NASA for years on previous boats without problem, but I would take extreme care with your proposal .....

It will likely work well ..... just be sure !!!


<hr width=100% size=1>Nigel ...
Bilge Keelers get up further ! I came - cos they said was FREE Guinness !
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[Cantata]

Oooer thanks for tip about strength of NASA fitting. It will reside safely below a floor panel where nothing else is stowed, so it shouldn't get knocked about.
I'm replacing the depth too, so the problem remains of what I will do about the old Navico depth skin fitting. The Clipper depth is quite different, its a permanent device fitted from the outside and is much much narrower than the Navico. Again there is a lazy way - leave the plug in and fit the Nasa elsewhere, but not very professional.
I remember reading somewhere a while back that the thing to do is remove the old skin fitting, make up a wooden plug for the hole and epoxy it in, then trim inside and out and epoxy over. Does that sound reasonable?

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[Hardley]

I did the same job last winter.
I removed the old housing.
Taped the new one up with sellor tape, making sure all the thread and top of bottom flange is covered.
Cleaned and roughened inside fibreglass.
Shamphered around the old hole outside.
Made up a paste of resin, chopped mat mixed in hardener and spread the paste onto the new housing.
Offered it all up from outside and taped in place, making sure that it was upright inside the boat.
Don't allow to much paste to get inside the boat at this stage(I did and had a long sanding job to do).
When it has gone off, push the new housing out, remove tape.
Inside you can now beef the surrounding area up with some resin and mat.
I did not apply gelcoat to the outside, as the flange covered the resin/paste that I had applied.
Use a good sealant under the flange and install, once all the resin has gone off.
I have not had any water come in.
Regards
Hardley.


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[Hardley]

I did the same job last winter.
I removed the old housing.
Taped the new one up with sellor tape, making sure all the thread and top of bottom flange is covered.
Cleaned and roughened inside fibreglass.
Shamphered around the old hole outside.
Made up a paste of resin, chopped mat, mixed in hardener and spread the paste onto the new housing.
Offered it all up from outside and taped in place, making sure that it was upright inside the boat.
Don't allow to much paste to get inside the boat at this stage(I did and had a long sanding job to do).
When it has gone off, push the new housing out, remove tape.
Inside you can now beef the surrounding area up with some resin and mat.
I did not apply gelcoat to the outside, as the flange covered the resin/paste that I had applied.
Use a good sealant under the flange and install, once all the resin has gone off.
I have not had any water come in.
Regards
Hardley.


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[Cantata]

Thanks for all that, sounds reasonably straightforward. I'll give it a go!
Cheers.

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