[mizlplix]

In central Arizona, we have an annual hill climb event at Pichacho Peak State Park. It is not really a rough coarse, more of an up hill drag race 200 yards long.

It is only open to Early cars with an engine block made in 1935 or older. Most run a model "B" FORD, but I have seen an Olds and a Chevy too. There are mostly street cars, but there are some purpose-built ones too. But, they have a class "for time only". It is not for a prize, but you just get to run.

It is subject to the rules committee, but their volume of cars has been flagging in recent years, so they might allow my Roadster to run.

I view it as a starting place for EV's in AZ racing.

It is in November. So, I have time for the decision making process to take place.

AC 3 phase motors have been around since the early 20th century, I wonder if I can find an old one.......

Miz

[Dustin_mud]

That would be very cool, keep us informed.

[Tesseract]

Originally Posted by mizlplix

....
AC 3 phase motors have been around since the early 20th century, I wonder if I can find an old one.......

You going to make an inverter using thyratrons, too?

[Dennis]

Originally Posted by mizlplix

rocess to take place.

AC 3 phase motors have been around since the early 20th century, I wonder if I can find an old one.......

Miz

Actually, 3-phase AC induction motors with the cage rotor design that we see today has been around since the 19th century when in 1891 Mikhail Dolivo-Dobrovolsky came up with this improvement and was one of the developers of the 3-phase system. Tesla invented the first AC induction motor, but it used coils of wire wound around a rotor rather than cast rotor bars imbedded into the radial surface of the rotor.

[mizlplix]

Thyratrons.......be careful, your age is showing...

But the Russian motor ran on vodka instead of electricity.

Im new at this EV stuff. Cant I just have one contactor and turn it on?
(That worked for NASA in the early 1960's).

Miz

[Ziggythewiz]

If it's just a straight race I think that would work. Even having a controller I used to drive mine as just on or off.

I was thinking about that today how it would be interesting to do a system like that. Have a hand throttle that selects how many batteries, and the gas pedal for on off. Then size a lead pack with decreasing capacities to even out the loads

[mizlplix]

Im new at this EV stuff. Cant I just have one contactor and turn it on?
(That worked for NASA in the early 1960's).

Uh? You all know I was just kidding...right?

With the kind of current/traction/weight involved, I think a welded contactor would be the result.

: )

Miz

[Ziggythewiz]

Well, if you're doing it NASA style you'll run out of electrons (or funding) right as you cross the finish line, so stopping won't be an issue anyway.

[mizlplix]

OK, So where do I get a PRE-1935, 15 HP, 4-pole, 3-phase electric motor?

I already have a willing rewinder to do the project.....

: )


Miz

[Tesseract]

Originally Posted by mizlplix

Thyratrons.......be careful, your age is showing...

Hah... almost! Thyratrons are still the switch of choice above 20kV and several kA. Vacuum tubes of all sorts are still used industrially. They are especially popular for high power RF amplifiers.

Originally Posted by mizlplix

Im new at this EV stuff. Cant I just have one contactor and turn it on?
(That worked for NASA in the early 1960's).
...

Only if you come over to the DC dark side...