[Yabert]

Just to put the things in perspective, a friend of mine can do the 0-60 mph under 4 sec and the 1/4 mile in 12 sec with his 250 Kg go-kart powered by one ineffective 6.7'' motor. His peak power is around 50Kw.
It's why I wrote that 250Kw is probably enough for very good performance in your 500Kg vehicule.
http://www.youtube.com/watch?v=3UOToi0fHNs

To reach your goal, I think you need to focus on lightweight components and good aero. So, forget the shiva capable of 1600hp and build a light vehicule powered by a powerfull system. Dual kostov 9 can be awesome, even if they are powered by a single 1000-1400A controller (500-700A on each motor). 300-350 Kw potential and roughly 300-350 hp at motor shaft.

[MalcolmB]

So with this new layout are you thinking of eliminating the diff and chain-driving the half shafts independently? If so, you might want to consider one controller per motor anyway. Either two Solitons or two Soliton Juniors.

[major]

Originally Posted by Yabert

one ineffective 6.7'' motor.

What's ineffective about it

[zsnemeth]

Originally Posted by Jordysport

Parrallel Dual motor on 500A (soliton1) doesn't really cut it.

Than connect in series.

[skooler]

Originally Posted by Jordysport

Is now wishing evnetics would do a controller in between the Soliton 1 & Shiva theres a gaping chasm inbetween them in terms of performance. Parrallel Dual motor on 500A (soliton1) doesn't really cut it.

Why not just use two soliton 1s?

[Yabert]

Originally Posted by major

What's ineffective about it

Well, ineffective when you dump 850A at terminals of this small motor. It probably generated 1/3 of heat and 2/3 of power with all the energy coming from battery at his peak power point (or even worse!!).

[major]

Originally Posted by Yabert

Well, ineffective when you dump 850A at terminals of this small motor. It probably generated 1/3 of heat and 2/3 of power with all the energy coming from battery at his peak power point (or even worse!!).

Hi Yab,

I think you mean inefficient. And I agree that it may be inefficient by some standards. But I think it is quite effective Look at the performance it delivers for its size & mass (and also for its cost and durability).

And on the subject of efficiency, although I don't know what battery he is running, loss in that battery could be on the same order as the loss in the motor. Would you call the battery ineffective?

Looks to me like that guy has a real effective ekart

major

[MalcolmB]

I forgot to ask: Do you still plan to use the Jedi mostly for hillclimbing events, or have you got something else in mind now?

[McRat]

Perhaps consider a torque converter? 380 Nm isn't much, one off a 6-cyl late model car will do that easy.

You are only running under 1 minute, so no cooling should be required. For max power, use the lockup feature. All newer TC's are locking style.

[Jordysport]

Originally Posted by MalcolmB

So with this new layout are you thinking of eliminating the diff and chain-driving the half shafts independently? If so, you might want to consider one controller per motor anyway. Either two Solitons or two Soliton Juniors.

Possibly, but independent shafts are a little more tricky, will need a few more supports and bearings.

Two SOliton1's would work in it, and be quite space effective but running out of room.

Originally Posted by skooler

Why not just use two soliton 1s?

Originally Posted by MalcolmB

I forgot to ask: Do you still plan to use the Jedi mostly for hillclimbing events, or have you got something else in mind now?

Mostly yes but a few top speed runs, funders want some pub facts to brag about.


Slowly getting the model together in the spare few mins i have in the day. just got to model up suspension components etc and a few body panels and i won't be far off.