posted 02-07-2003 11:32 PM ET (US)
I just went through the exercise of buying a motor for my D15 (not mounted yet). However, I did alot of research. Maybe this helps:1. Current consumption: Minnkota manual says that battery drain is roughly 1A for 12V and 0.74A per hour for each pound of thrust. I think this is accurate at higher settings but somewhat too high for lower.
2. Recharging: I can't have power on my dock and I don't want to lug batteries. Check out the Stealth 1 charger at http://www.stealthcharging.com/. This allows your alternator on your motor to charge both the cranking and trolling batteries. It supports 12V, 24V and 36V systems. If your run your motor as you move around, each time you do, the battery is charged. Lead acid batteries don't like to be fully discharged and this helps.
3. Motor: I opted for the Minnkota 55AP - 55lbs thrust, plus auto pilot. Minnkota recommends 2 lbs of thrust for each 100 lb of boat weight. I chose to take that at that and up them one motor size. Seems to me its better to have to much thrusts at the high end instead of too little.
4. Mounting Location: Check with BW tech support for the layout of the backing wood under the front of the boat. It moves around greatly with the D15 and I suspect that this is the case with all of them as they learn what people try to mount. Also, on the D15, various serial numbers have various mounting plates and the material can be mahogany plywood or phenolic. Mounting in mahogany is recommended by BW to be lag bolts (since you can't get at the underside) and tapped holes if phenolic.
hope this helps.
j