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Matt_E

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matt, did you try the shorai after you fixed your cable?

Of course. with the bad terminal, it wouldn't start at all under load. When the cable was fixed, I got two very careful gallons out of it.
Again, not a battery but an ignition problem.
 

Matt_E

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my oem needed a rebuild after 1 week in daytona. It is still going strong but it was brand new the year i went and after daytona it sat until spring and apparently had water in it and was stuck good. have you felt your cables to see if they warm up on a good crank of the motor?

They don't.
(even with a very bad starter, cables in good condition should not heat up)
 

Matt_E

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you should have no problems that i can see with either setups, charging system with bilge will work, and the msd tl without bilge should work good too. I was thinking MattE sold you his Flame so he could keep his shoria battery and run a MSD again like real men do, haha.

I value the simplicity of the ATP over MSD. For now.
 

D-Roc

I forgot!
try lite beer, haha. I had hot cables from my crusty starter. It would kill my deka battery fast too. I rebuilt my starter with honda ATV parts and a few JSS parts and it is working awesome still. Just wondering the status of your starter motor. you should be able to crank the crap outta your motor with the 220cca battery.
 

motoman96

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Good actually, how's the box wine diet going for you? LMFAO I saved your number, could've swore I did Saturday after you called, but I guess the beer diet has some drawbacks.

I have all new cables, starter, bendix, starter solenoid and total loss for this boat. And it's strictly freshwater so I hope I don't have any issues.
 
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Matt_E

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try lite beer, haha. I had hot cables from my crusty starter. It would kill my deka battery fast too. I rebuilt my starter with honda ATV parts and a few JSS parts and it is working awesome still. Just wondering the status of your starter motor. you should be able to crank the crap outta your motor with the 220cca battery.

If your cables get hot, they should be replaced.
The starter is fine. I can indeed crank the crap out of it with a Jetworks battery.

Edit: warm is ok. Hot is not.
 
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Matt_E

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Good actually, how's the box wine diet going for you? LMFAO I saved your number, could've swore I did Saturday after you called, but I guess the beer diet has some drawbacks.

I have all new cables, starter, bendix, starter solenoid and total loss for this boat. And it's strictly freshwater so I hope I don't have any issues.

After I ran out of nasty Blueberry brandy moonshine and Black Velvet, I switched to Mike's HL, lol.
 

D-Roc

I forgot!
my cables got hot because i was sending the juice down the line and the starter was not using it well, no hot cables since the rebuild, no new cables, and the battery lasts, The jetworks is a huge battery, of course it cranks the crap outta your motor. Like i said, my almost new oem starter got crappy and you probably have not opened it to see inside it. i am just a bit curious as to why your ski killed a bigger battery faster than scotts.
 

Matt_E

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my cables got hot because i was sending the juice down the line and the starter was not using it well, no hot cables since the rebuild, no new cables, and the battery lasts, The jetworks is a huge battery, of course it cranks the crap outta your motor. Like i said, my almost new oem starter got crappy and you probably have not opened it to see inside it. i am just a bit curious as to why your ski killed a bigger battery faster than scotts.

Quick brush-up on electrical theory:

Bad starters draw a lot of current. They use that current just fine, they just need more of it as they get older or worked over by SBT. :biggrin: The current through the positive cable, starter, and ground cable is the same everywhere.
Cables get hot because they dissipate power.
Where does that power come from?
Voltage drop and current.
Current increases with a bad/old starter, no arguments there.
But what about voltage drop? You get that only if you have significant resistance in the cables. Which you shouldn't have with good cables. Considering how heavy and short those cables are, you shouldn't have more than a fraction of an Ohm per section.
With a 0.1V drop in the cable (that's already pretty high!) and a bad starter using 100 Amps (really high), the power dissipated by the cable is 10W. That's nothing for heat in such a relatively large mass of metal.
Your cables don't heat up anymore because your new starter draws less current. Your electrical system can still be improved by better cables.

FYI, the Jetworks battery is spec'd at 295cca. It's not that much bigger spec-wise than the little Shorai, at least on paper.
Besides, I didn't "kill" the battery, it just got to the point where cranking dropped it below 10V momentarily. Still cranked fine. You could get a lot more hours out of it on an MSD setup. (I think I explained this a few pages ago :biggrin:)

Any other iginition will keep firing as long as the motor is cranking. The ATP does not. That's the problem.

Edit: Once the starter gets so bad that it nearly or fully stops while current goes through it, you have a short circuit with hundreds of amps going through. Then you get hot cables even if they're new. But by that time you have other problems.
 
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Matt_E

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PS: I had some starters tested by a starter shop about a year ago.
An old OEM starter was drawing about 50 Amps. A new SBT starter was drawing the same.
A new OEM starter pulled about 20 Amps.
 

D-Roc

I forgot!
so yeah basically what i said, haha. my starter was the problem and not my cables, my cables are newer jss cables. nice stuff. my stater was killing the battery and even heating up the cables on a long crank. but that is on my ski, so who cares. your ski was killing a battery that is close to the same cca as your jetworks, you not curious? or do you just think the battery is un capable of maintaining a 10+ volt crank in the water? If it is not, i personally would be rechecking my starter for its condition. hot cable should be a sign of something bad. (not that your cables are hot)

Roofy Pez dispensors also impress highschool girls.
 
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Matt_E

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I don't think you're reading my posts.

1. My cables are not getting hot.
2. It didn't kill the battery.
3. The ATP ignition does not tolerate dips below 10V. (ANY other ignition does and you would never know that it drops below 10V. It's common)


Edit: I did actually check over the whole starter thing when I first had this issue with the Flame. I would get only a handful of cranks out of even the Jetworks battery. I replaced all cables and it improved, but not that much. Then I got a new OEM starter and things improved a lot. Since putting that starter in, my ride time has stayed the same (at least 10 gallons, I rarely ride more than that between charging the battery). Hence my starter is in like-new condition.

or do you just think the battery is un capable of maintaining a 10+ volt crank in the water?

That's exactly the problem. And it would never be a problem if it weren't for the way the Flame is designed.
 
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