[Bowser330]

Originally Posted by elmerfud

This website has data for the Warp 11 motors, but it doesn't coincide with anything that you have in your data unless you data was short term power and the other data is continuous.

http://www.go-ev.com/motors-warp.html

There Warp 11 HV grap shows a maximum of 35 HP.

http://www.go-ev.com/images/003_20_WarP_11_Graph.jpg

Elmer, look at it this way...

Higher voltage allows you to pull more amps at a higher rpm....

Amps are relative to torque, the more amps the more torque...

So higher voltage allows you to pull more torque at higher rpms...

Horsepower = Torque * Rpm/Constant

So per the formula, higher Torque @ higher rpms will generate higher horsepower...

The graphs you provided were at 72V, Crodriver is running more than 4X as much voltage than that.....

[zwmaster]

Listen to Bowser
Don’t expect to do 50.000km with one brush set if running much around +1000A.

zw

[CroDriver]

Originally Posted by Bowser330

Thank you for the graph CroDriver.

The graph might be even more accurate if you didnt limit the amps to 597A from 0-5000rpm...

Instead you should maybe graph what it looks like in phases...
Example:***
0-1000rpm = 1400A = 563Nm
1000-3000 = 1000A = 395Nm
3000-5000 = 597A = 233Nm
etc.
etc.
This will not increase peak power but it will increase area under the curve and show more horsepower at lower rpms since:
Horsepower(hp) = Torque (ftlbs) * RPM/5252

***Note: Torque figures pulled from: http://www.evsource.com/tls_warp9.php

The problem is that we don't have any data above 600 Amps and I can't predict how efficient the motor will be at that currents since it seems like eff drops quite hard with rising current.

This may help

Originally Posted by NetGain guy

Volts and RPMs are nearly linear, so doubling the voltage will double the RPMs. Torque will remain the same if the amps don't change.....

Originally Posted by elmerfud

This website has data for the Warp 11 motors, but it doesn't coincide with anything that you have in your data unless you data was short term power and the other data is continuous.


http://www.go-ev.com/motors-warp.html

There Warp 11 HV grap shows a maximum of 35 HP.

http://www.go-ev.com/images/003_20_WarP_11_Graph.jpg

I have some stats I got directly from NetGain.

Jim Husted is working on the motors now. When he gives me some data about the wire size and windings I can make a better graph

[Bowser330]

Originally Posted by CroDriver

Jim Husted is working on the motors now. When he gives me some data about the wire size and windings I can make a better graph

any updates from Jim?

[CroDriver]

Originally Posted by Bowser330

any updates from Jim?

Not yet.

I asked him to take some photos. I should get them soon.

[Bowser330]

Originally Posted by CroDriver

Not yet.

I asked him to take some photos. I should get them soon.

Thanks for the update bro. I hope those motors turnout to be little monsters...better get some cryo-treated gears and a crazy rear-end!!

Have you thought about possible going AWD through the transmission? You could probably use an AWD setup from a turbodiesel truck which are known to handle up to 1000ftlbs...The low profile of the E-motors would allow it all to fit nicely in a modified car unibody....

[CroDriver]

Originally Posted by Bowser330

Thanks for the update bro. I hope those motors turnout to be little monsters...better get some cryo-treated gears and a crazy rear-end!!

Have you thought about possible going AWD through the transmission? You could probably use an AWD setup from a turbodiesel truck which are known to handle up to 1000ftlbs...The low profile of the E-motors would allow it all to fit nicely in a modified car unibody....

I'm expecting 2000ftlbs out of two 11" HV motors

I want to reduce weight and wasted space in this car so I'm keeping it "simple".

I think that there is no need for gearing with a MW of battery power. Is that term ever been used in a car? MW?

I could get used to it

[WarpedOne]

There ain't many 1300 HP cars around...

[DavidDymaxion]

Sometimes Zillas are called "MegaWatt" controllers (actually it's about 0.7 MW).

On the gearing thing, even the 1000+ hp Bugatti Veyron, and the 315 mph electric Buckeye Bullet have multiple gear ratios. I think it is more a question of how fast a top speed do you want? If you gear even a powerful car for max top speed you'll hurt low speed acceleration, and vice versa.

Originally Posted by CroDriver

... I think that there is no need for gearing with a MW of battery power. Is that term ever been used in a car? MW? ...

[Bowser330]

Originally Posted by DavidDymaxion

Sometimes Zillas are called "MegaWatt" controllers (actually it's about 0.7 MW).

On the gearing thing, even the 1000+ hp Bugatti Veyron, and the 315 mph electric Buckeye Bullet have multiple gear ratios. I think it is more a question of how fast a top speed do you want? If you gear even a powerful car for max top speed you'll hurt low speed acceleration, and vice versa.

Its also a question about efficiency and since most drivers have 2 normal driving speeds a city and a highway, if you had 2 gears you could maximize the efficiency of your overall mileage....

However, another thing to note is that even though there are transmissions that can handle 1000ftlbs and can be built for 2000ftlbs it will probably be really expensive AND may not even handle it, since this isnt a 2000ftlbs curve this is a 2000ftlb spike at 1rpm!

I am not planning on making anything with that much power so I will need a transmission to give me some mechanical advantage