Is this the speed sensor? should i barrier coat?

[JimGeddes]

I'm assuming this first picture is telling me that my autohelm depth and speed sensor is now just a depth sensor. Someone please correct me if I'm wrong. Is there any way to fix this without buying a hole new setup?

Also this next pic is the bottom paint chipping off. Under the paint is a thin darker layer of something, then the white hull. Anybody know what the dark layer is ?

I obviously have to repaint the hull b4 i splash it, but who here thinks i shoud sand it all down and put a barrier coat on her ? Or should i just chip as much of this paint off sand a little, then paint back over it?

I have been doing a lot of reading and i can't decide if i should barrier coat it or not. It would be nice to know that i won't have to worry about it again for a long time... But is it really necessary? I live in upstate new york and will be sailing around Seneca lake.. I might be taking it down to florda for the winter. I'm just wondering if bc of this i should barrier coat it, or if that really matters? if I'm not having a problem with moisture, should i just leave it be and paint it like always?

thanks again

 

[butchrobbins]

I'm assuming this first picture is telling me that my autohelm depth and speed sensor is now just a depth sensor. Someone please correct me if I'm wrong. Is there any way to fix this without buying a hole new setup?

Also this next pic is the bottom paint chipping off. Under the paint is a thin darker layer of something, then the white hull. Anybody know what the dark layer is ?

I obviously have to repaint the hull b4 i splash it, but who here thinks i shoud sand it all down and put a barrier coat on her ? Or should i just chip as much of this paint off sand a little, then paint back over it?

I have been doing a lot of reading and i can't decide if i should barrier coat it or not. It would be nice to know that i won't have to worry about it again for a long time... But is it really necessary? I live in upstate new york and will be sailing around Seneca lake.. I might be taking it down to florda for the winter. I'm just wondering if bc of this i should barrier coat it, or if that really matters? if I'm not having a problem with moisture, should i just leave it be and paint it like always?

thanks again

aren't the depth and speed two different things? They are on my boat. In fact I don't even use the speed because if u leave it in growth clogs it up.

 

[Bad Obsession]

The speed transducer is a wheel that has paddles on it and it turns. You will have two seperate transducers on there...one for depth and one for speed.

If you don't have blisters, etc, just sand out your hull and make it semi-smooth. It will never be perfect, just make sure that the bottom coat won't chip off. Then just re=paint with bottom paint.

The only time you barrier coat is when you strip your hull down to the jell coat, repair blisters, and intend to start with a fresh bottom.

 

[JimGeddes]

Yea, sorry i should have been a little bit more clear with the depth/speed thing... There are 2 through hull's one is the depth and the other (shown in the first picture) is the speed with the little wheel on it.. That wheel got crushed and I'm holding half of what was left of that little wheel in my hand. I was just making sure that that was the the speed sensor.

Can this wheel be replaced ? or do i need to buy a new unit ?

 

[dsavlin]

That looks just like my Navico speed transducer. I'm guessing the boat was hoisted right where the transducer housing is at, or the boat set down on the cradle?

The transducer works by magnetism so if you can find a replacement paddle wheel, just find one that will a) fit properly and b) has a magnet on one vane. However I think it's going to be tough to find a replacement. I've been searching for 2 seasons for replacement parts and have yet to find anyone carrying parts.

On the other hand: if I proceed with replacing my instruments this year, you're more than welcome to the spare (never used) transducer I have. Send me a PM (private msg) so I have your contact info if we do replace ours.

Finally: many of the new instrument kits I've looked at use a single solid-state transponder for both depth and speed. No moving parts at all. This might be what butchrobbins was referring to.