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Selling some of my spare Lehman 2700 series 6D Dorset parts: Sump in like new condition $350 Good, solid valve covers $100 each Adapter plate/bell housing for BW Velvet Drive $100 Factory double crank pulley $100 Box of CAV/Simms fuel filter parts $50 Injector line set including feed and...

Calder's explanation: "In a series/parallel setup, it is an excellent practice to cross-connect the positives and negatives on the individual 6-volt batteries, or 2-volt cells, as shown in Figure 1-21. This minimizes differences in the way the batteries work and perform." As has been pointed...

That’s actually one of my main questions. The left 4 make 12 volts with 450ah, as does the right 4. I figured if I parallel those two sets I get 12v 900ah. Will connecting the two sets in the middle change the voltage or amperage? I keep confusing myself about that?

Thanks for the reply. Do you know where I might find a diagram of the very best way to configure this bank? Nigel Calder's diagram only shows 4 batteries, and I have 8. I know that one bad cell anywhere spoils the pot - that's a given no matter what, but I'd like to maximize what's healthy...

Hi All, I have 8 Trojan T-105 225ah wired series/parallel for a 12v 900ah house bank. I had heard some time ago about "cross connecting" to better balance everything, and then read about it again in Nigel Calder's book. I welcome any feedback from folks who know about such things. Diagram of...

Shielded from the converter to the AP right? I can do that.

Thanks to all the help from this Forum I've learned two main things: The magnitude of how much I didn't know I didn't know, and it looks possible anyway! The OpenCPN is functioning without a GPS device, just a GPS puck antenna plugged directly into a USB port on the Mac. The Mac has a serial...

I'm also trying to figure out how to actually wire up the connection between the 0183 data as shown on my nav software screen and the AP. If I connect one of these (DTECH RS232 to RS485 / RS422 Serial Communication Data Converter Adapter) to the data port on the Mac Mini that runs my nav...

Thanks for this info and help! It may all work out yet without having a great deal on a new old stock AP cost more than it's worth to get working with waypoints.

Thanks very much Ted:thumb: I may have access to a Garmin 220, but I'll start with seeing if the signal even works with what I have. I really appreciate the help.

Like this GlobalSat BU-353-S4 USB GPS Receiver

Oh man, typo. 120, not 220. They are older models, each with their own antenna. The computer uses a puck antenna.

I have 2 stand alone Garmin GPS 220 units that show me SOG and position, one at each helm. They are not used for plotting. For Chart plotting I have OpenCPN installed on a Mac Mini running TFT displays. All that works great, but I am (obviously) at the shallow end of the learning curve in...

So I will need to get an 0183 GPS antenna has more than just a coax cable, yes?

Thanks for the replies! The manual does state that the APU is set up to receive nmea 0183, so there's that anyway. I have a lot more reading to do...

Hi Folks, I recently found a NOS Cetec Benmar Compu-course 220 that I will be installing on my boat. The input for auto-trac is set up for 2 wire Loran C data. Can this unit be made to work with the GPS signal running my OpenCPN nav software? I tried contacting the gentleman at Benmar Marine...

Noted! Thanks for your interest. We'll see how it goes.

Barely used complete Si-Tex SP-70 in excellent condition. Comes with electrical cables, dual helm controllers, APU, rudder position sensor and linkage, compass, and 12v mechanical drive with clutch, chain, reversible adjustable mounting brackets, and steering shaft gear. Includes instruction...

Excellent condition, circa 1970. The gears are perfect, and the motor was just refurbed, cleaned and tested great by a commercial starter shop. Double bronze capstans, foot switch with spare cover, and continuous duty solenoid. This was installed on a wood Grand Banks 36'. 12vdc - Will need...

Grand Banks Emergency Tiller from an early 36' Classic with the low aft deck. This also works with GB 32's. It is in great condition with normal wear for its age. I believe the handle is yacal (same material as the frames). The rudder post socket is 1-1/4" square. Please see photos for...

Hi all, Selling an Emergency Tiller from a '67 GB36-CL. The older 36's had the lower cockpit aft. It's too short for a flush deck GB. This will also work fine on GB32's. See pics for measurements. Great condition for its age. I'm pretty sure the handle is yacal - it's really dense. $250 +...

Check the fuel tanks for rust and the cabin sides below the windows for soft spots, in and out. Also check for rot below the steps that lead down to the aft cockpit.