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  1. Electric Motors
    At a given KV rating, will a motor with higher Watts have more torque? At a given watts rating, will a motor with lower KV's have more torque? Can we calculate KV from rpm and volts? Eg, 4900rpm/72V=68KV ?
  2. All EV Conversions and Builds
    Long time member here, I remember back when Mate Rimac was just one of us and not an EV Supercar CEO. I always have and still want to work on a DIY EV project but was taken by the performance and value of the model 3 performance, so i bought one. However I would like to get this community's...
  3. Non Road Going Vehicles
    Hi everyone. I'm trying to make an electric scooter, but I'd like to avoid hub motors. I came across a video in which an old alternator is used as the kart's motor. However, I'm still questioning the feasibility. I like the idea of using an alternator because of its cheap power and...
  4. EV Performance
    Hi guys, First time poster here so be gentle... I have a Gen1 Nissan Leaf 30Kw and I want to increase the available power. I was inspired by Arlin Sansome's videos on Youtube: https://youtu.be/S6OInkLWAhk I like the idea of potentially creating a bolt-on kit that anyone can purchase and...
  5. Controllers
    Hello everyone! I'm looking for a VFD to pair with a 15kW three phase induction motor rated at 230/460V and 48/24A continuous (460V * 24A = 11040W < 15kW :confused:). The thing is, I looked into the motor's specs, and it has a starting current of 165.8A, and I can't seem to find a VFD with a...
  6. Electric Motors
    Hello experts, I understand this is an electric car forum. But some of the tech maybe applicable to smaller applications too. Also am an electronic noob, so apologize in advance if this is too basic. I have 2 motors from 2 brands These are BLDC In-Hub Motors for an Electric Scooter. One...
  7. Technical Discussion
    Got sight on LED Car Dome Interior lights from Ebay. The image is shown below: Its voltage and current specifications are: Voltage: 12V: for Cars, Motorbikes and Caravans Power: 1.5W Since I am using 12 V. using the calculator I calculated the amount of resistance which it offers...
  8. All EV Conversions and Builds
    Hi.. I am planning to build a electric car from scratch by my own design. It will be very simple, one seated, Go-cart like. But, I want to implement some features of intelligent car in it, like Autopilot, smart system monitoring system, etc. Now, the real thing is, I want to make it very very...
  9. Technical Discussion
    Hey guys im brand new, I need some help figuring out my first build My goals are to have an electric kart that can get up to 50-55 mph at the most. Acceleration would be awesome too (anything more than a standard car) but id like to take this to work every day, it's not too long of a drive...
  10. Batteries and Charging
    I am looking to maximise ability to go up steep hills in a regular size car, say 1200-1600kg, minimise battery weight, and not fussed about range as my total commute is only 30km. Using a Warp 9 DC motor I understand that for acceleration I need to maximise battery pack voltage to 144V+, but...
  11. EV News
    Ride along with Dani on an Electric Segway as we take a tour of the Hunter Valley EV Show 2012 at the Newcastle foreshore park. Check out the Tesla Roadster, Varley EVR, and the Solar Power Australia Electric DeLorean from Back to the Future fame. There were also many other exciting electric...
  12. Batteries and Charging
    There has been occasional discussion about wireless charging and there were some links in the thread (now removed) about being able to run an EV continuously without having to [stop to] recharge the batteries. At this point I don't think there is any practical means to do this, but it may become...
  13. eBay EV-Related Auctions
    As also posted on eBay: The Nomad is a light weight solar powered pleasure boat for 4 to 6 persons (3 rooms) measuring 14.90 x 5 metres with a height of 3.30m and draught of 1.30m. The living room has ample space of 27 m2 and extends under favourable weather conditions to 37 m2. A panoramic...
  14. Technical Discussion
    Hi everyone, I am working on a 2000lbs electric vehicle using the Curtis 1238 Motor Controller and AC 50 Motor powered by 96 volts lead acid deep cycle. I want to have the all the electronics in a box and have panel mount circular connectors for 1/0 cables so I can disconnect and...
  15. Controllers
    While waiting for my Zilla to be fixed (my fault, Zilla's rule!), I installed my Curtis 1231C in the truck. Its a 500 amp controller, but I'm only getting 200 amps off the battery side, not sure of motor side. When I had previously had it installed, it put out a full 500 amps. The Curtis...
  16. Batteries and Charging
    I've been looking for a charger that charges off both 110VAC and 220VAC and has an adjustment for line-Amps drawn, so I won't overload a circuit if I can get a charge while traveling. Does anyone have any to suggest? Something for a 144V pack (45 LiFeYPO4cells * 3.2V/cell). Does anyone have any...
  17. Electric Motors
    I guess this question is part theoretical, part practical. Can anyone explain what the limiting factor is in the power any given motor can produce? Looking at the basic P=IR statement, I suppose with the same current flowing, higher voltage would produce more power. But then there's the...
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