"The turbine is superior!"
Then why do the rectifiers run at 260F rather than 200F with a blade fan?
"The turbine is superior!"
Then why do my blade fan alternators not cook the stator black?
"The turbine is superior!"
Even the alternator case and stator laminations run several dozens of degrees cooler
"The turbine is superior!"
This is where REAL EXPERIENCE comes in, not deducing, not assumption, not parroting rhetoric. This is where a total of perhaps 120 hours of discussing matters such as this with the head Delco alternator project engineer comes into play.
And purty please, define "windings"...there are two "windings" in an alternator: The stator and the rotor bobbin. Rotor to stator clearance enters the picture. Factory clearances are so sloppy they are a joke.
But job one in engineering is to match the requirement to feasibility. I am a designer. I deal with Lund & Flynn, the largest stator winding company on the face of the earth. So a stator reconfiguration is a minor affair.
Bosch did not supply, they do not offer anything but a 40/90 alternator for the toad. The 50/120 alternator is a Mitsubishi. The Bosch has long mounting ears, the Mitsubishi has short mounting ears because the body of the alternator is fatter. But they mount the same way but the pulley is different.
Let me count the ways I do not like the Mitsubishi: The DE bearing 6303 is the same on both alternators. The SRE bearing is a 6201 on the Bosch and a A6000XX on the Mitsu. The 6201 will outlast the A6000XX four to one. The smaller bearing has caused lots of problems with durability. The 6201 like the 6303 is near bulletproof, especially when Mobil 7 synthetic urea bearing grease is used in place of the petroleum urea grease.
The Bosch uses 1/2" rectifiers. 35-amp variety. The Mitsu uses 5/15" DISH rectifiers and if a person doesn't like them, tough. I will fit direct replacement 50-amp 600 volt rectifiers to the Bosch. The Mitsu uses brushes that are half the length of the Bosch brushes and to add insult to injury the Mitsu slip rings are very small diameter. That may be a plus because when they and the brushes wear out at an early age, the inferior A6000XX bearing has to be yanked, first.
I believe some of you are unfamiliar with my trade. With my own hands I have rebuilt in excess of 10,000 alternators. I have designed so many "You can't do that!" alternators I lost track and really don't care.
So what seems to be a real chore to some, is light housekeeping to me. I tell Lund & Flynn what to wind and a week later it will arrive in the Will Call counter.
I -could- design a rotor and stator that would turn the Bosch into a real monster. But that's not what I'm after. When I am on the road and wish to recharge my group 31 Lifeline, I want an alternator that at road speed can develop maximum absorbsion charge instantly while delivering plenty of power for air conditioning. The clutch and blower. I only need 130-amps, but I demand absolute reliability - something the Mitsu couldn't do if it was gold plated.
At 95,000 miles the Spirit is ready for an alternator (and starter motor) maintenance turnaround. Since I am getting a brand new Bosch starter for $55.00 I am not going to fool with brushes, the rigging, starter drive, commutator, and solenoid. By the way, "new" means just that, not rebuilt. Not a clone.
These "wanna be" alternator experts that think a turbine fan is superior to an old style Delco 10DN 13-blade fan can write all the B.S. they want to. One of the conversations Marion Hovermale and I had concerned the efficacy of internal versus external fans. I told him about my employment of "Thermal Tattletale Discs" on my BETA alternator designs. Smaller than a dime, these adhesive discs had a spot in their center that turned black when a calibrated temperature was reached. I had boxes and boxes of discs ranging from 200F to 380F. The higher temp discs were solely for determining "How bad did it really get?". A higher temperature than the liquidification point of 60/40 solder.
When Ralph Scheidler (Sure Power industries who had a PhD in thermodynamics) advised me to black anodize troublesome CS-130 Delco housings, I later reported the exact degree of his success.
I can only thank god my business was not constrained by anti-depressant riddled bean counters or soused salesmen. A niche industry has it's built-in income constraints, but that's the path I chose.
And no, I do not have any patience at all with quacks and B.S. artists that spout ridiculous claims about alternators. "Reality" has a nice feature about it, it is absolute.
