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Bracket Talk Bracket Talk Forum Tech Talk - by Abruzzi Cooling Fan vs 16v BatteryGo | New | Find | Notify | Tools | Reply | |
| Cooling Fan vs 16v Battery | Login/Join |
| DRR Elite |
You got bigger issues  | |||
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DRR S/Pro |
You may be right. Originally setup had a relay, so it supplied 16V to the fan. Ground went to a common ground terminal with 6 gauge to battery. Everything is the same now except running the step down, Spal fans. Dave "It is usually futile to try to talk facts and analysis to people who are enjoying a sense of moral superiority in their ignorance." -Thomas Sowell | |||
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| DRR S/Pro |
"It is usually futile to try to talk facts and analysis to people who are enjoying a sense of moral superiority in their ignorance." -Thomas Sowell | |||
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| DRR Elite |
I think yes to both David. Foxtrot Juliet Bravo | |||
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| DRR Sportsman |
Since I do not know what you mean by a simple resistor, let me add some details. In order to drop the voltage from 16 volts, you would take 2 resistors in series to create a voltage divider. Plus they would need to support 25 amps like the Turbo Start drop down box since you are running 2 fans. If you look at the Turbo start module, it has a large heat sink due to its ability to support the 25 amps and the heat created by it when loaded. So using ohms law Power equals voltage x current, 16volts x 25 amps = 400 Watts on the resistors. Those resistors are not simple. LOL | |||
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| DRR Elite |
i believe that. Good info thx Foxtrot Juliet Bravo | |||
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| DRR Sportsman |
Ok so here is follow up to my original post. After testing the battery, going over car wiring, and checking the charger to make sure all were good, it ended up falling back on charging. It appears that when my car is idling the volts are at 16.1 to 16 with all accessories on. The alternator appears to only really put out a charge when it is at WOT or above 2000 RPM so at idle there will be no charging from the alternator. This has led to the conclusion that the demand time that I am requiring from the fan to cool the car is not allowing the charger to keep up between rounds. The alternator is a 1-Wire Micro Mini Alternator 55 Amp 16v. With the charger connected (car not running) the charger is correctly charging with 17.2-17.5 volts but when I turn the fan on it will then drop to 16.4-16.5 therefore not charging the battery. | |||
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| DRR Elite |
As I said that alternator is uselessThis message has been edited. Last edited by: 1320racer, | |||
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DRR Pro |
at the trailer you need 25 amp chrger or higher if you can honesty is the best policy,insanity is a better deffense 1.036, 6.16@ 224 | |||
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| DRR Trophy |
If you are running an MSD Power Grid, it records the battery voltage on the run. You can then see what your alternator is doing voltage wise vs. RPM. 1.34 9.42@ 142.41 1.29 5.97 @ 114.00 @ #3251 Better in 2022 427 BBC by S&S Speed Center, AFD, Enderle MFI by Spud Miller Trackside Products, Sepanek Racing T400, Dynamic converter, Autoweld, Santhuff, Smith Racecraft, His real name is Richard but they call it "**** Fords Body Shop" | |||
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| DRR Sportsman |
Grid has just been installed as of yesterday. Charger is XS Intellicharge and also have Turbo Start as a backup. Both go 25 amp or higher if i remember correctly. | |||
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| DRR Elite |
surely you've seen this battery charger in the pits of serious racers who want and need the best. This charger is the gold standard, the benchmark for drag racers. it is made in the USA, specifically Connecticut. It charges at 30amps and is what you need but no charger will overcome that useless alternator  which is the same charger as this  and both are the same as this one who is the manufacture  This message has been edited. Last edited by: 1320racer, | |||
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DRR Trophy |
Same charger we use in our cars. With a 100 amp HOP Super Mini alternator, we can easily go an entire day without charging on the charger IF we start the day with a full battery (16V batteries do not like to be run down as it is, so we leave on trickle all week anyway). They only time we charge them is the first couple passes because we feel slightly guilty if we don't put it on while car is just sitting for an hour or so lol This is even with a car with electric fuel pump, on gas (so fan on more often than not) but also the heavier D1600 battery with more reserve. Now we have both cars on methanol, one with an electric pump but fan never comes on and the other now a belt pump with fan on more than door car due to rad line size and size of radiator. Nick Craig 1971 Camaro Split Bumper 376ci LS3 | |||
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| DRR Sportsman |
I have a Rock charger also. Going to upgrade the alternator, just need to find one that will fit the moroso waterpump bracket. | |||
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DRR Top Comp |
I run the mini alternator (it is the ONLY one that will fit) and have for years. Works great and data logger shows it is charging. Mine was originally one of those high dollar race ones. After years it quit working and local alternator shop said it was nothing special inside, typical factory stuff. If you are having problems you may have other issues, bad grounds, loose wires, too small of wires, bad connections, bad battery or bad alternator. Putting a big bad alternator on there is a band-aid to fixing the problem. https://postimg.cc/gallery/np3zpruo/ "Dunning-Kruger Effect" -a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge. Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue. 4X NE2 CHAMPION. 2020 TDRA NE2 Champion | |||
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| DRR Sportsman |
What size pully are you running? | |||
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| DRR Elite |
for clarity Mini Alternator  Ultra Mini Alternator  USELESS... unless you run on alky, with a belt driven pump and 16 volts THEN the ultra mini will work for you/your load. | |||
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| DRR Trophy |
That's a valid point as well.. If you aren't running a 5" pulley on crank and like a 2.5" or whatever it is on the alternator, it won't spin fast enough no matter which one you use. Nick Craig 1971 Camaro Split Bumper 376ci LS3 | |||
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| DRR Elite |
This is the the alternator used on both my Firebird and Dragster, same size alternator when I ran 12 volts too. https://ecae.com/product/16-volt-120-amp/This message has been edited. Last edited by: 1320racer, | |||
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DRR S/Pro |
While I am running only 12 volts, I use the House of Payne super mini 100A alternator, which is basically a GM CS 121 alternator. With everything on, water pump, radiator fan, transmission cooler fan, fuel pump, head and tail lights I still have 13.2 volts at idle. They are very fairly priced at $200 for a 12 volt, $235 for a 16 volt 272" Spitzer 540 Chevy The Blower Shop XR1 FTI XPM Series Converter FTI Level 6 Powerglide 3.69@199 .916 60' 2017 Bradenton Heads Up Madness Open Outlaw Champ 2018 PDRA T/D #5 2019 PDRA T/D #2 2020 Retired From T/D Competition.... 2020 Bradenton NMCA Hemi Shootout Winner 2021 getting back into bracket racing with a Gen3 Hemi powered 87 Cutlass. | |||
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Bracket Talk Bracket Talk Forum Tech Talk - by Abruzzi Cooling Fan vs 16v Battery
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