How to remove a padddlewheel speed sensor on a boat

[@spelunkerd]

Starting at about 1:50 of the following video, you can watch how this is done with the boat in the water. kzbin.info/www/bejne/apzNl6FjhpJqqJo

[@spelunkerd]

For those looking for an inexpensive replacement for the stainless steel shaft of the sensor, I believe that a length of 3/32" stainless steel tig welding rod is just about the right diameter. One rod is a lifetime of shaft replacements, which are easy to swap out.

[@robinsonsauto]

I always learn something new from you. very educational, been disconnected for sometime wanted to swing by and watch an old friend glad i did great job! hope your doing well

[@spelunkerd]

Thanks, Will! I feel the same way about your channel, I never go away without learning something useful.

[@hole1stdrillpresschannel]

Perfect, exactly what I've searched for. Very helpful!

[@spelunkerd]

Thanks, I'm glad it helped.

[@terrynauck1832]

hole - 1st drill press channel no

[@stuzman52]

Looks like you're fixing the boat up there Dave. Is this a boat you've had for awhile or just bought it? Nice demonstration of how to replace the sensors along with good tips when reinstalling. Looking forward to your diesel maintenance videos. Take care...

[@spelunkerd]

+stuzman52 Thanks, Terry. Anybody who owns a boat know's there is no end to repair of some kind.

[@shawnmrfixitlee6478]

looking forward to seeing the engine repair you spoke of .. This was new to me I enjoyed .. Thumbs up !!

[@spelunkerd]

+ShawnMrFixitlee Thanks, man. I think some of my mechanic friends might like a change of pace.

[@KAISERM79]

Exactly what I needed to see... thank you

[@nickwilson1476]

Excited for the diesel videos!

[@spelunkerd]

+Nick Wilson Thanks, Nick. They will come slowly, I hope, because the ever popular Yanmar engine is so reliable. I find the small diesel engine design to be elegantly simple.

[@davidgreene9302]

spelunkerd I love your videos.

[@bronsonh21]

Any chance you know the model of paddle wheel you have in this video?

[@spelunkerd]

I must have written it down, somewhere. Next time go to the boat I'll look it up for you. Note that the NMEA 2000 speed sensors are completely different than these older NMEA 0183 devices, though it is possible the wheel is unchanged.

[@spelunkerd]

Ah, here it is, shown at 4:20 of the following video kzbin.info/www/bejne/apzNl6FjhpJqqJo

[@jeromedaniel4983]

The flange that reduces the onflow of water on my airmar through hull transducer seems to not work as well as it should as water gushes up powerfully when I remove the transducer..any suggestions?

[@spelunkerd]

It's not a critical element and some boats don't have it. It's just a flap of rubber fabric that is pushed shut like a one way flap valve by the pressure of the water. Next time you have the boat out of the water you can have a look, it could be held open by overgrowth of weed, barnacles, or other sea life. You can replace that component but I probably wouldn't bother if you can't fix it. Good luck!

[@wtbm123]

Good video

[@spelunkerd]

+wtbm123 Thanks.

[@Kleinfreak]

Excellent video. I am very interested in diesel engine repair, I'd love to see some videos on that.

[@spelunkerd]

+Kleinfreak Yeah, the basic Yanmar diesel has a winning design, certainly worth exploring. Thanks for watching.

[@Don.Challenger]

Another good one.

[@spelunkerd]

+Don Challenger Thanks, Don.

[@alaskanalain]

You said the paddle wheel is cheap? I need one for a old analog gauge (prob 1960 or 1970's vintage) There are adds on your youtube page that show it at $200 or more, sometimes much more. Given you can get a gps, with a screen that shows current data too, for the same price or less, I don't think I will be replacing my paddle wheel. Probably safer to just glass over the hole anyway. Pity though, I did like to have it.

[@spelunkerd]

Mine is an analog sensor, although yours may be a different vintage. Nevertheless, replacing the paddlewheel should work if your sensor is OK. When I was thinking I might have to replace the whole sensor, I contacted the manufacturer and they told me I could get the same analog sensor if I asked for it. Conveniently they both fit the same through-hull. As you know, the present generation are all digital, and my old 0183 communication protocol is obsolescent. However the signal I get from the sensor is a simple Hall effect on/off signal, so it's more basic data than the communication protocol used in new devices sold now. These paddlewheels are not as reliable or as accurate as the new ultrasonic sensors, but those devices require a larger through-hull and have a bigger footprint on the hull. Fortunately I got away without doing major surgery on the hull. Perhaps one day they will be able to make one that fits our old through-hulls, in which case I would consider replacing mine. As you know GPS can't isolate the contribution of current, instead giving an overall result combining current and vehicle speed vectors. For sailboat racers, it's useful to separate the two because it helps with decisions about the fastest pathway up a tidal channel. Thank you for watching!

[@zx8401ztv]

Thats different from your normal repairs :-) So the paddle one measures the speed of the craft and i suppose converted to knotts. . Dont know how the depth sensor works, i guess its similar to sonar or electronic tape measure. a transmitter outputs a pulse of L.F energy into the water and it travels untill it hits the seabed and reflects back, something picks it up and calculates the delay on the two paths and since the speed/length of pulse travel is known then the distance is calculated. Possibly something like that lol, i said i didnt really know :-D Im sure you will correct my crude guess :-D

[@spelunkerd]

+zx8401ztv Yes, mine is a typical ultrasonic design, as you say.

[@zx8401ztv]

+spelunkerd I bet that would drive bats mad, although i dont think they swim LOL :-D

[@rathernotdisclose8064]

just watched a video of someone almost sinking their ship because of that stupid little paddle wheel.