FSH 210 Sport
Jetboaters Fleet Admiral
- Messages
- 7,399
- Reaction score
- 9,243
- Points
- 512
- Location
- Tranquility Base
- Boat Make
- Yamaha
- Year
- 2020
- Boat Model
- FSH Sport
- Boat Length
- 21
Okay Boys and Girls,
Finally got a chance to run the engines on the hose with the new smart shunt on the house battery.
With no accessories on I started the starboard engine and turned on the water, I waited until I read 14.4 volts on the start battery, verified no amp draw on the house battery then closed the DVSR enable switch, 10 seconds later the DVSR closed and I was getting 6.8-7A’s of charge gong into the 100Ah LiFePO4 house battery on one engine at idle, raised the rpms to 3500 and got 13.12A’s. Started the port engine and raised both engines to 3500 rpm’s and read 26A’s of charge current going into the house battery.
So there you have it, roughly 7A’s of charge per engine at idle, and 13A’s of charge per engine at 3500 rpm’s. This is very close to a thread I once read that said the TR-1’s were good for 14A’s but I’ve never been able to find that thread again.
I have no idea what the engine consumes for the fuel pump, injectors and ECU. But lets assume that the stator is 200 watts, divide that my 14.4, and you get 13.888A’s, so 13.89 which cries out to be 14A’s. I find it hard to believe that the fuel pump and injectors would only be drawing 1A, but all that matters is now I know, and so do you, how much charge current is available off of the TR-1 engines. I’ll be doing some more measurements once I get on the water.
Finally got a chance to run the engines on the hose with the new smart shunt on the house battery.
With no accessories on I started the starboard engine and turned on the water, I waited until I read 14.4 volts on the start battery, verified no amp draw on the house battery then closed the DVSR enable switch, 10 seconds later the DVSR closed and I was getting 6.8-7A’s of charge gong into the 100Ah LiFePO4 house battery on one engine at idle, raised the rpms to 3500 and got 13.12A’s. Started the port engine and raised both engines to 3500 rpm’s and read 26A’s of charge current going into the house battery.
So there you have it, roughly 7A’s of charge per engine at idle, and 13A’s of charge per engine at 3500 rpm’s. This is very close to a thread I once read that said the TR-1’s were good for 14A’s but I’ve never been able to find that thread again.
I have no idea what the engine consumes for the fuel pump, injectors and ECU. But lets assume that the stator is 200 watts, divide that my 14.4, and you get 13.888A’s, so 13.89 which cries out to be 14A’s. I find it hard to believe that the fuel pump and injectors would only be drawing 1A, but all that matters is now I know, and so do you, how much charge current is available off of the TR-1 engines. I’ll be doing some more measurements once I get on the water.
