Rob, Take a look at UHMW (ultra high molecular weight polyethylene). It is readily available and easy to work. It is commonly used for sliding applications industrially. One of its fairly rigorous

Dan, Thanks for the informative reply. I had tried to upload a spreadsheet with our SG readings in it, but Yahoo was acting up. I tried again in this reply, but it won't upload the attachment. The

Hi Duane, I also have the DEKA group 31 Marine Master batteries (DC31DT) , installed December 2016. I am not an expert, but can only relate my specific experience. After 6 mos on the hard in Trinidad

Thanks Eric, As often is the case you have a good suggestion. Delrin looks like a good suggestion. Nylon certainly appears not to be a good choice . The problem is probably aggravated by long

I had a similar problem with the bearings in the rudder shaft of my Tartan 37. I had new bearings made out of delrin and had no further problems , after sailing her over 15,000 miles. Fair

Thanks Hank, Yes you're right all the technical papers that I've found show equilibrium for the most common Nylons i.e. Nylon 6, Nylon 66 and Nylon 610 at 50%/60% humidity. The equilibrium is achieved

Yes, it is. Bill Kinney SM160, Harmonie Great Abaco Is, Bahamas

Nylon swells a little as it absorbs moisture, maybe a different kind of plastic like PE (poly ethylene) or better still HD (high density) PE would be better?

Hi Paul, It's hard to know what's Jonnuck in the advice from Périgny these days. So, if you wish, I'll ask when I'm up there tomorrow, repairing the passerelle. As an example nobody could advise

Good afternoon Duane, I have been following your Bow Thruster issue. I would have guessed the sensors as well… I was going to write you, but since you check these already did not. Here is what

Is the motor and drive that raises and lowers the thruster and thruster motor a jack screw arrangement? Duane

Paul, Where did you buy the sensor? Duane

Paul, By the way, to check if it's the pulley wheel, put it back together and stay next to the high pressure pump. When the grating noise starts you'll be able to tell if it's the bendix bearing.

Paul, You have a failing "bendix bearing". This is pressed into the large pulley on the High Pressure pump. It's made to lock up in one direction and slip in the other direction (so that when the

Hello to rainy Hamburg I would be interested in buying back your engine, complete with alternators (if you left them on) & inverter, as a back up to my my old faithful. Offer a sale price for the

Nick, I have the 53' Super Maramu. The limit switches on my boat don't have buttons. They must be sensors that work on a magnetic basis. Duane

Hi Christian, yes, it is a Maramu. The engine was in a running condition. It is now removed. Engine is still complete and currently with our local engine dealer here in Hamburg (Germany). If you are

Hi, I have a Dessalator duo 100. The unit runs fine in the 240v motor. When trying the 24v motor it stops suddenly after about a minute of the pressure being turned up, sometimes with a grating

Hi Duane, I have had a similar problem on my 54. I have not yet got to the bottom of it but I believe it is the top and bottom sensors that are not actually sensors. They are simply push button

Duane, I recently had the problem of the down sensor not working, although I did not experience the same symptoms as you have described. Replacing the sensor solved the problem. As regards raising the