Seen what RC is doing with brushless DC motors?

[lendaddy]

This video is pretty impressive. Brushless DC motors are impressive. 120MPH!

http://www.rcpics.net/view_single.php?medid=17788

[techweenie]

Extremely impressive.

We're using a brushless DC motor to power electric bikes up 25% grades for up to a mile and to hit 40 MPH. http://www.asifproductions.com/zvo

As battery technology progresses, several new applications will become practical for electric motors.

[Superman]

Eventually, I suspect cars will be electric. Once they get the battery problem worked out. And when that happens, they'll be smoother, quieter and STRONGER than our cars.

[lendaddy]

As far as real, practical uses for this technology, I think we're a ways out. The efficiency of the B/L Dc motors is almost perfect. This means that it is a matter of energy supply being the bottleneck. I just don't see batteries getting to that point real soon. After a run like that, those batteries are dead, the amperage pull is sickening! And on a sclae level the batteries there probably represent 70% of the crafts mass! Still neat though.

[slope-nz]

I fly R/C and have on and off since the mid 60's. I like the electrics because there is a lot less mess to clean up.I'm curently flying a electric duct fan F-86. fun fun fun Randy (AMA 16732)

[RickM]

They had a drag race between an electric car and a ?corvette? the other night on TLC or Discovery. The electric car killed the gas powered counterpart up until a certain point. I caught the very end of the segment but the point was clear.

..and yes battery technology has been VERY very slow to progress.

[island911]

techweenie - For reference, these guys have got it going on. A very well engineered product.

Regenerative Braking, compact folded-down & weighs only 22 lbs. (as they say; less than most light-weight bicycles) Makes it great to throw in a car, or airplane. . . and only $300 delivered.

Big down-side: doesnt like the wet conditions.

No affiliation .. . I just picked one up after reseaching who made what.

[lendaddy]

Island, those are cool. I have some drawing I did on something similar a year ago I especially liked this line on the site "Max Speed of 15 mph
(governed for your safety) " Translation "it is a 20 second mod to get this thing to kill me speeds"

[lendaddy]

Oh, yea, I've got an 1/8th scale Nitro powered buggy. The boy and I will enjoy this hobby in couple years. These things haul too, I can do about 50mph and jump and land 50ft leaps with ease, just good old fun. Amazing how durable and well made these lil buggers are.

[slope-nz]

lendaddy, I've had my share of cars but they have always been indoor carpet cars. 1/10 and 1/12 cars.Good times ahead for you and your boy. Randy

[island911]

Originally posted by lendaddy
. .. .
(governed for your safety) " Translation "it is a 20 second mod to get this thing to kill me speeds"

An engineer buddy showed up with one of these EXkates things.

0-22 MPH in 4 SECONDS (governed for your safety)

Lots of power, but slow to turn, weighs 54 lbs (lots to lug, not easy to carry) . . . cost $1200(a few months ago) .. . but lots of "kill me speeds" power.

I think we will see MANY more powered personal transport products. . .as they become more & more socially acceptable.

[UconnTim97]

The last autox I was at, a guy was using a Honda Hybrid (forget the name), and he did pretty well

[john70t]

sorry, a minor tangent from the topic, but there was talk of the futures hybrids using 2-stroke all ceramic/composite diesel engines.
They'll run on just about any fuel from the Middle East or Nebraska. I like the idea of adding a small turbine for highway speeds