Going to work on boat this winter and I want to hook power. I seached the past for information, but did not see much. First, I have a 216 with 5 hp motor. I need to know if the hull spead with be greater than 7. Secondly, any ideas about where to put the battery and lights? thanks for any help. d
216 power and lights
- Thread starter troutsmoustang
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Hull speed and power
My calculations for flat water hull speed yields 5.5 knots.
As for adding power and lights well we would need to know the engine model to tell you how to get the power out of the engine alternator (if it even has one). The best battery location I can't help with as I've never been on a 216 but lower and toward the center are better for boat balance.
Before you go adding a lot of stuff you may not need consider the following. The storage-load-production of electricity on a boat is all inter-related and there are solutions for one boat use that would be massive over kill or massive under kill depending on HOW you use your boat. Day sailing, weekend over-nighting.....cursing. Probably not the latter but you never can tell with sailboats. Since you say you are "adding lights" I'm assuming nav, anchor and cabin lights. Perhaps you have a dry cell battery anchor light or nav lights??
the first step is to determine the load the storage-production is going to have to support. The amps the load (lights) draw times the number of hours it is going to be on between production cycles is the AH number you need to come up with. Example:
Day sailing with a late return to the dock:
3 Nav lights drawing 1 amp each times 3 hours = 9 amp hours
1 cabin light drawing 0.5 amp times 3 hours = 1.5 amp hours
Total 10.5 amp hours drawn from the batteries. You would not need to even have a production capability beyond a battery charger you turned on once back at the dock if your battery capacity (also in amp hours) is something around 100 amp hours or one group 27 deep cycle battery.
As you add time to the usage of the boat between production cycles you either need to get more storage or produce more often or produce more each cycle.
But first figure out the load your production-storage system needs to support.
I have a spread sheet that does all the calculating and all you have to do is enter the load amps and time the loads are on. Then you can play with production and storage till you get something that works and fits the budget. Email me at william-roosa@us.army.mil for a free copy.
My calculations for flat water hull speed yields 5.5 knots.
As for adding power and lights well we would need to know the engine model to tell you how to get the power out of the engine alternator (if it even has one). The best battery location I can't help with as I've never been on a 216 but lower and toward the center are better for boat balance.
Before you go adding a lot of stuff you may not need consider the following. The storage-load-production of electricity on a boat is all inter-related and there are solutions for one boat use that would be massive over kill or massive under kill depending on HOW you use your boat. Day sailing, weekend over-nighting.....cursing. Probably not the latter but you never can tell with sailboats. Since you say you are "adding lights" I'm assuming nav, anchor and cabin lights. Perhaps you have a dry cell battery anchor light or nav lights??
the first step is to determine the load the storage-production is going to have to support. The amps the load (lights) draw times the number of hours it is going to be on between production cycles is the AH number you need to come up with. Example:
Day sailing with a late return to the dock:
3 Nav lights drawing 1 amp each times 3 hours = 9 amp hours
1 cabin light drawing 0.5 amp times 3 hours = 1.5 amp hours
Total 10.5 amp hours drawn from the batteries. You would not need to even have a production capability beyond a battery charger you turned on once back at the dock if your battery capacity (also in amp hours) is something around 100 amp hours or one group 27 deep cycle battery.
As you add time to the usage of the boat between production cycles you either need to get more storage or produce more often or produce more each cycle.
But first figure out the load your production-storage system needs to support.
I have a spread sheet that does all the calculating and all you have to do is enter the load amps and time the loads are on. Then you can play with production and storage till you get something that works and fits the budget. Email me at william-roosa@us.army.mil for a free copy.
thanks so much for the information. This really helps me. Let me get this straight. I can have a battery to run to my inverter and then plug radio up to inverter. Do you think that I will only need one mast light for my nagvigational lights? david
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