Recent content by DavidDymaxion

Here are some pics of my machining and welding my do-it-yourself motor adapter. Enjoy! There is a funny story at the end of how I wound up in the emergency room thanks to a midnight attack by my adapter. http://explodingdinosaurs.com/9electric/adapter2/

I ran my Porsche 9Electric on the Salt Flats! I didn't go very fast, but it was fun and much was learned. Look for a faster run in 2010. I'll challenge the Tesla guys to come out and run against me in September 2010. http://ExplodingDinosaurs.com/9electric/2009saltflats/ The 130 club is the...

No, quite the reverse, that was a compliment! Please post the link to any group you think would be interested.

You were as fast as that barstool James, you beat me to posting the link!

Thanks! It has been great fun. For me, the welder is the curse provoker!

See all kinds of fun stuff: Plasma cutting, machining, welding, ring rolling, blueprints, etc. Enjoy! Porsche 9Electric Rear Motor Mount My main page: Electric Vehicle Racing

Daniel et al, several topics in this post: Power steering: Power used can be highly variable. On the race track, a power steering pump can get so hot it boils the fluid out! I also learned (for my GM car at least) the PS pump pumps the full volume of fluid continuously -- it is always pumping...

That's right, your I^2*R losses are less with higher voltage, since you can run less current for the same power. However, your I^2*R losses are pretty small compared to what you need to move the car when you aren't racing. Even if you optimistically went from 80% to 85% efficient that's a small...

Let's assume worst case, 163 Volts down to 138 Volts at 400 Amps. (In reality, a resting voltage is artificially high and you really should use 2 different currents and two voltages, like 200 Amps and 400 Amps). Also, going down to only 138 Volts is pretty good. (163 Volts - 138 Volts) / (400...

Daniel: Direct drive would make your problems worse. If you don't have enough power to burn rubber in 4th gear (or at least 2nd gear), you don't want direct drive. Ideally you'd still have your clutch. EVNut: The Chrysler TEVan and the Commutavan both had multiple gear ratios. Though not a...

Daniel: Thanks for posting your experiences. I'm currently converting a 1977 Porsche 911 to electric power. http://ExplodingDinosaurs.com A few thoughts for you: Autocross racers often dial in some toe-out! This helps jerk the car into the turn, quickening the steering response. Toe-in makes...