0 - 60 in under 2 seconds

[Martin A]

Formula student racer.

http://www.gizmag.com/electric-car-...ail&utm_term=0_65b67362bd-cfc43fe99d-89811358

http://www.amzracing.ch/en/cars

 

[emmgee]

My favorite parts in this incredible vehicle: The four in-wheel motors.

Each motor delivers 37kW/50HP peak, but weighs only 3.4kg. Connected to a planetary 'gearbox' which takes the forces from the suspension.
Excellent electromagnetic design and highest quality components (ultra-thin high-Si-iron, Ti-axis) allows this good efficiency and extreme power density.
A pity that it's not planned to be produced for sales.

 

[made_in_the_alps_legacy]

awesome !

 

[Hillhater]

My favorite parts in this incredible vehicle: The four in-wheel motors.

Each motor delivers 37kW/50HP peak, but weighs only 3.4kg. Connected to a planetary 'gearbox' which takes the forces from the suspension.
Excellent electromagnetic design and highest quality components (ultra-thin high-Si-iron, Ti-axis) allows this good efficiency and extreme power density.
A pity that it's not planned to be produced for sales.

What logic would make them decide not to put this into production , or at least licence the design ?
Is there any details of the design ? , KV, voltage, number of phases, etc etc ?

 

[spinningmagnets]

0-100 km/h in 1.785 seconds (62.1-MPH), achieved in less than 30 meters (98.4-feet)
http://www.nanowerk.com/news2/green/newsid=37971.php

The new record was set by students from ETH Zurich and Lucerne University of Applied Sciences and Arts, [Switzerland]

The carbon fibre construction has a total weight of 168 kg (370.4-lbs) and produces about 200 hp. A four-wheel drive is implemented with four specially designed wheel hub motors, which generate a total torque of 1630 Nm at the wheels. By means of traction control, torque distribution is controlled individually for each wheel to maximise vehicle acceleration. No other production vehicle in the world has reached a similarly strong acceleration

 

[amberwolf]

So my bike with Tiny in the trailer wieghs notably more than that whole car....

 

[gogo]

http://endless-sphere.com/forums/viewtopic.php?f=34&t=64509

They were limited to 50 HP per wheel by the rules? Great stuff.

 

[made_in_the_alps_legacy]

very few details on their website...

(the previous motor image above was for another model)

"PMSM: permanent-magnet synchronous motor "
battery bank, 470V x 15.6Ah = 6.46kWh
1:13.576 reduction through planetary reductor
http://www.amzracing.ch/sites/default/files/files/grimsel_Medieninformationen.pdf

anyone volonteers to calculate motor kV ? :wink:

 

[Punx0r]

That is a very impressive peak power density. I wonder what the continuous rating is, considering there seems to be no active cooling?

 

[motomoto]

Just a couple of cool videos.

[youtube<iframe width="560" height="315" src="https://www.youtube.com/embed/T2Dql2gGfk0" frameborder="0" allowfullscreen></iframe>][/youtube]

 

[liveforphysics]

[youtube]T2Dql2gGfk0[/youtube]

 

[Willow]

thats very cool Luke.

A shitload of work gone into that.

 

[motomoto]

Sorry I left the first thread not right. My internet went out during editing.

I am trying to embed other videos. I haven't figured it out yet.

http://youtu.be/gIwhZiXXl_0

http://youtu.be/PzbN7PgQnPQ

http://youtu.be/m9EKqpA2UM8

 

[Hillhater]

It's been posted before,
http://www.endless-sphere.com/forums/viewtopic.php?f=34&t=64509
....the bottom line is, yes, it's impressive 0-100, but...
It's not a record, not even close !
It's not really a car, more like an oversize go kart.....built to a very specific rule set for the 0-100 kph run.
It's certainly not a production vehicle nor a road going vehicle so it's more like a drag vehicle.
It's designed/geared and set up just for 100kph max...its 1/4 mile time would be very un impressive .
...and There are faster 0-100 electric drag cars !.......that will go on to much higher max speeds over a full 1/4 mile.
Note;- it took this car 98 feet to reach 100kph in1.78 secs
EV drag cars (full size, some even street able ) are passing the 100kph mark in 1.4 -1.5 secs , before the 60 ' mark.

 

[doctorGONZO]

Just a couple of cool videos.

[youtube<iframe width="560" height="315" src="https://www.youtube.com/embed/T2Dql2gGfk0" frameborder="0" allowfullscreen></iframe>][/youtube]

What I have always enjoyed the most is ACCELERATION, never been impressed by speed, so, I expect you really like to ride your machine!

Me, and others, don't do youtube for one reason or another. I expect that a ordinary photo of your creation would be of great interest.


Thanx
GONZ

 

[Hillhater]

Me, and others, don't do youtube for one reason or another. I expect that a ordinary photo of your creation would be of great interest.

....really ? ..you are missing out on so much useful info...why ?
PS;- those links were to the Dutch hub drive 0-100kmhr kart .

 

[made_in_the_alps_legacy]

EV drag cars (full size, some even street able ) are passing the 100kph mark in 1.4 -1.5 secs , before the 60 ' mark.

I could not confirm, would you have some reference ?

PS;- those links were to the Dutch hub drive 0-100kmhr kart .

this kart is not dutch

 

[Hillhater]

Oops !...yes sorry, I should have said Swiss.
For EV drag times look up the NEDRA site .

 

[made_in_the_alps_legacy]

I looked at it and still trying my best to compare with that swiss thingy...
Looking at the 1/4 mile record holder :
201.35mph in 6.94sec, would look like (6.94s / 324 kph) x 100 kph = 2.14s for 0 to 100kph ?

 

[Punx0r]

Acceleration of any drag racer is unlikely to be linear...

 

[made_in_the_alps_legacy]

well... let's be more explicit then :

unless proven otherwise., they hold the 0-100kph acceleration EV world record.

 

[Hillhater]

Official records are nice Trophys , but it's much more satisfying to know who is the actual fastest !

 

[made_in_the_alps_legacy]

Official records are nice Trophys , but it's much more satisfying to know who is the actual fastest !

unfortunatly, speed in not the matter here.
So if I try to get your "kind of" point, it won't take long to smack that 0-100kph EV acceleration world record down.
fine, will see.

 

[The Toecutter]

That motor might be perfect for my project...

It's a shame that it's unobtainium...

 

[Hillhater]

That motor might be perfect for my ..

Possibly, but remember..
Their vehicle only weighed 168 kg......what do you expect yours to weigh ?
The motors were geared/set up to max out at 100 kph , if you change the gearing or wheel diameter for a higher max speed, you reduce the torque proportionally.
Also, their performance runs were very short duration. Continuous or extended use would undoubtedly require a reduced output power to avoid overheating.

..but yes, they do not appear to be available anyway ! :?