SailNet Community - View Single Post - Raymarine speedo question
View Single Post
post #8 of Old 06-26-2014 Thread Starter
Senior Member
BarryL's Avatar
Join Date: Aug 2003
Location: Long Island, NY
Posts: 2,019
Thanks: 4
Thanked 81 Times in 76 Posts
Rep Power: 14

Hi Guys,

Thanks for the comments. I have done some research and some work:

-I have learned that the transducer is made by airmar (it looks like like ST300).
-Airmar states that the paddlewheel is water lubricated and wears out after 5 years
-The paddlewheel can be removed by pressing out the shaft with a new shaft or a 4D nail.
-They recommend that the paddlewheel be painted with antifouling paint.
-If I spin the wheel the speed registers on the display

So far I have:
-Removed the old paddlewheel. I cleaned the old shaft with sandpaper
-The wheel turns much more easily than before
-The speed display still shows 0, even when I am moving at 6 kts (via GPS)

I have ordered a new paddlewheel kit, which should arrive today.
Tomorrow I will install it. If the speed still reads 0, I will dive the boat and see if something is blocking the flow of water past the paddlewheel.


Barry Lenoble
Deep Blue C, 2002 C&C 110
Mt. Sinai, NY

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
BarryL is offline  
Quote Share with Facebook
For the best viewing experience please update your browser to Google Chrome