Forum Discussion
MEXICOWANDERER
Jan 29, 2016Explorer
Hairpin is NOT NEW technology. Every 50DN Delco alternator is hairpin and has been for 40 years.
When I start the Lombardini, it has a 1-2 ratio with the alternator. 2,000 engine, 1,000 alternator. At 2,500 RPM the Delco delivers 217 amperes @ 28 volts. At 3,000 - the full 385 amperes. This is a 24-volt unit meaning 385 amperes really means the equivalent of SEVEN HUNDRED SEVENTY AMPERES of 14-volt energy.
The idea is high amperage at LOW engine speed. It's insult enough to have to run 8-cylinders to get 120-amps. If you have to rev the engine to get the 120 grab the nearest conical shaped hat. My bus dead slow idles the 28 volt Niehoff at around 305 amperes. Equal to 610 amps of 12 volt energy.
The ND meaning Nippondenso is a factory produced hairpin.
ALL my alternators, The 50DN and the NIEHOFF have my own external rectifiers and external voltage regulators. I want ambient temperature air to blow by the stator windings not pre-heated air.
The Lomhardini/50DN has a 1/4" stack of irradiated copper plates and six VA 1,675 ampere, rectifiers. Think 1/0 rectifier braid with 1/2" holes (Plating plant rectifiers). Also think dual ball bearing 28 volt fan that passes about a thousand times more air across the copper stack.
Back in the 70's I purchased one KG of colloidal silver. Mixed generously with GE silicone grease, and colloidal beryllium, I made the best heatsink grease on the planet. The beryllium powder is poisonous. I wore a respirator and looked like a Hazmat worker as I mixed it and the silver into the grease. All went into a 6 liter lexan lab jar. I'd hate to try and price it all today. But because of the beryllium I cannot user it on consumer goods like my LED lamps.
With my Dodge Spirit junktoad, I'm going to get a 120-amp Mitsubishi alt, to replace the pathetic 40/90 Bosch, rip into it, and do a triple delta 16-3/4 gauge stator at Lund & Flynn, remote mount a rectifier package in the trunk and use one of my leftover Transpo F540SP voltage regulators (and a dollar 10 ohm 50-watt resistor). Time to mount a 31 Lifeline in the trunk. The new 2-story Lifeline is going into the house. If I can't get 100-amps at dead-slow idle I will be surprised. Perhaps at speed, 185 tops, hot. Converting existing car bracketry for a hairpin would be a nightmare on steroids.
When I start the Lombardini, it has a 1-2 ratio with the alternator. 2,000 engine, 1,000 alternator. At 2,500 RPM the Delco delivers 217 amperes @ 28 volts. At 3,000 - the full 385 amperes. This is a 24-volt unit meaning 385 amperes really means the equivalent of SEVEN HUNDRED SEVENTY AMPERES of 14-volt energy.
The idea is high amperage at LOW engine speed. It's insult enough to have to run 8-cylinders to get 120-amps. If you have to rev the engine to get the 120 grab the nearest conical shaped hat. My bus dead slow idles the 28 volt Niehoff at around 305 amperes. Equal to 610 amps of 12 volt energy.
The ND meaning Nippondenso is a factory produced hairpin.
ALL my alternators, The 50DN and the NIEHOFF have my own external rectifiers and external voltage regulators. I want ambient temperature air to blow by the stator windings not pre-heated air.
The Lomhardini/50DN has a 1/4" stack of irradiated copper plates and six VA 1,675 ampere, rectifiers. Think 1/0 rectifier braid with 1/2" holes (Plating plant rectifiers). Also think dual ball bearing 28 volt fan that passes about a thousand times more air across the copper stack.
Back in the 70's I purchased one KG of colloidal silver. Mixed generously with GE silicone grease, and colloidal beryllium, I made the best heatsink grease on the planet. The beryllium powder is poisonous. I wore a respirator and looked like a Hazmat worker as I mixed it and the silver into the grease. All went into a 6 liter lexan lab jar. I'd hate to try and price it all today. But because of the beryllium I cannot user it on consumer goods like my LED lamps.
With my Dodge Spirit junktoad, I'm going to get a 120-amp Mitsubishi alt, to replace the pathetic 40/90 Bosch, rip into it, and do a triple delta 16-3/4 gauge stator at Lund & Flynn, remote mount a rectifier package in the trunk and use one of my leftover Transpo F540SP voltage regulators (and a dollar 10 ohm 50-watt resistor). Time to mount a 31 Lifeline in the trunk. The new 2-story Lifeline is going into the house. If I can't get 100-amps at dead-slow idle I will be surprised. Perhaps at speed, 185 tops, hot. Converting existing car bracketry for a hairpin would be a nightmare on steroids.
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