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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 Sportsman |
This is a graph from a recent run. This is a House of Payne 75amp Ultra Mini that Mark built me to use with the Moroso Vacuum/Alt bracket. 17+ volts going down the track and still 16.3 at 1900 rpm with Electric Fuel pump,fan and grid going down the track. Is it as efficient as a 100 amp mini? Maybe not, but it is not useless....  | |||
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DRR Pro |
diodes will also work to drop volts .one diode will drop app.one volt,two in series 2 and so on.i have two diodes in series on my o2 sensors and have not lost one sense. honesty is the best policy,insanity is a better deffense 1.036, 6.16@ 224 | |||
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DRR Sportsman |
Specifically what diode are you using? There are probably more than 1000 different ones. | |||
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| DRR Elite |
Tony, we’re going to agree to disagree. I can’t speak to mark’s 75 amp ultra mini but I can speak to ECAE 55amp ultra mini which is useless on an engine running gas and in a car with electric everything with a 12volt system. I know of no racer that has use it on this configuration that still does today and Chuck at ECAE told me it’s should only be used on a car running 16 bolts, on alky and with a belt driven fuel pump. | |||
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| DRR Sportsman |
I do agree on the 50/55 amp Ultra from ECAE,Powermaster or even HOP. I decided to try the 75amp 16v from HOP and it seems to be working well. I did not find out until after getting this one that you can now use a standard mini with the new Moroso bracket. I could have saved $150 by getting the HOP mini but what's done is done.... | |||
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| DRR Sportsman |
My Grid shows my alternator charging 17+ through the run. I have narrowed some things down and now im looking into possibly a bad ground or broken down wire somewhere. This past weekend, battery was fully charged, made a pass and shut off after finish line. Went to re start and got the clicking. was able to turn off ignition switch and and spin then hit switch to get it started. Battery was not dead in any way because I immediately tested it at the trailer. | |||
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| DRR Trophy |
I believe an 16 volt system will charge around 19 volts. That's not to say your system isn't charging at 17 to some degree. I'd still be suspect of the charging system with a running voltage that low. | |||
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| DRR Pro |
If you purchased an MSD 7730 Grid, it comes with 3 amp rated diodes that you could use. If not, an 1N5400 - 1N5406 diodes will work. | |||
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DRR Pro |
I have the same fan as OP, been on red dragster for 10 years this year on 16V whole time and on Go Lithiums for 3 years no. I do use HOP mini alternator with adjustable regulator for lithium batteries. 10 years on same fan with 16V says alot about reliability y'all...just sayin. | |||
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| DRR Pro |
nothing speacial,looks in shape like a resistor,amp rating is not critical.i just soldered them in series making sur poarity for flow was correct,used heat shrink to seal and protect honesty is the best policy,insanity is a better deffense 1.036, 6.16@ 224 | |||
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| DRR Sportsman |
I have been informed by 2 reputable people on this board that 17.2 or more is charging for an alternator. While a charger can reach 19v anything over 17.2 will charge it. Duration of time and amps also will dictate. | |||
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| DRR Elite |
agreed, neither of my cars, both using the same battery and alternator have ever charged at 19 volts and both use the same battery charger after every pass. | |||
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DRR Sportsman |
owned my car for 5 years now , fan was on it when i bought it so i dont know its age. but we converted it to 16volt xs with HOP alternator when we bought and fan works great without failures. just my experience. Michael Frizie ET 2471 | |||
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DRR Trophy |
On our dragster we ran on gas, electric pump and fan our HOP mini alternator would put out 17.5V at idle and usually stay there during a run based on Grid voltage reading. On alky without the fan on and still electric pump on a dragster and door car both will be 18V+ at idle, still only reading about 17.5V down track based on grid (I assume from the Grid producing more spark at higher engine speeds is why it still reads the same). I am curious what a belt pump on the dragster will produce as far as voltage this season on the dragster. Nick Craig 1971 Camaro Split Bumper 376ci LS3 | |||
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| DRR Pro |
The battery voltage in my Grid 7730 data acquisition shows 13.75v and the Holley HP data acquisition shows 14.1v during a run. The Holley digital dash shows 14.3v at idle. All are separately terminated at the positive post of the battery. I consider the Holley DA superior to the Grid 7730 based on resolution. The next time I start the engine I’m going to take a reading at the battery with my meter to see what this battery voltage is actually at during idle. | |||
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| DRR Sportsman |
For the people running the mini alternator 16v, what size pully are you running on the motor? I have noticed I am not achieving 17+ at ifle and if like to make sure my pully is the correct size. | |||
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| DRR Elite |
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| DRR Sportsman |
Mine's a 5inch pulley at the crank with no issues. Michael Frizie ET 2471 | |||
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| DRR Elite |
same | |||
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DRR Sportsman |
I run the ultra-mini with a 6" pulley from Dewzen. Here are my voltages and I use the Moroso charger. 16.5 @ idle 16.2 setting transbrake 16.5 on enhancer 16.8 on launch chip 17.3 in first gear 16.3 when it shifts 17.5 @ finish line Ken | |||
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Bracket Talk Bracket Talk Forum Tech Talk - by Abruzzi Cooling Fan vs 16v Battery
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