Search found 16 matches

by Sine
May 13 2020 2:06am
Forum: E-Vehicles General Discussion
Topic: Arduino 0-5v in to 0-5v out Throttle Interface
Replies: 8
Views: 3382

Re: Arduino 0-5v in to 0-5v out Throttle Interface

I made an Arduino based throttle interface. Any progress on your throttle interface? You should post some more details, and any updates on the development. Sorry, haven't been around in minute. I haven't touched this part in a while. I still need to finish my bike, which is almost done. There won't...
by Sine
Jul 12 2019 4:30pm
Forum: E-Vehicles General Discussion
Topic: Arduino 0-5v in to 0-5v out Throttle Interface
Replies: 8
Views: 3382

Re: Arduino 0-5v in to 0-5v out Throttle Interface

Nonlinear controls are horrible. More than likely you just have a controller that doesn't do torque-request throttle. TRT is intrinsically very smooth. Get one that does and use that arduino to set the output for perfect linearity if it's not already good. Controller does torque control. "Smoothnes...
by Sine
Jul 12 2019 4:28pm
Forum: E-Vehicles General Discussion
Topic: Arduino 0-5v in to 0-5v out Throttle Interface
Replies: 8
Views: 3382

Re: Arduino 0-5v in to 0-5v out Throttle Interface

You could probably get away without the DAC if you use a PWM pin and a simple Low Pass Filter on it. It depends on the impedance of the circuit you are connecting the throttle to since the LPF will have a much higher output impedance than the DAC. Just a thought. I thought about it, but eventually ...
by Sine
Jul 04 2019 3:47am
Forum: E-Vehicles General Discussion
Topic: Arduino 0-5v in to 0-5v out Throttle Interface
Replies: 8
Views: 3382

Arduino 0-5v in to 0-5v out Throttle Interface

I made an Arduino based throttle interface. It allows you to take 0-5v input from either Hall or Potentiometer throttles, and alter the output curve to anything you'd like. I'm using it to smooth out the throttle at the lower range. You'll need an Arduino (Uno is what I used, Nano should work as wel...
by Sine
Jun 26 2019 5:27am
Forum: E-Vehicles General Discussion
Topic: Votol Controller/QS3000 Precharge + contactor circuits.
Replies: 2
Views: 813

Precharge + Contactor Circuit Schematic

Using a QS3000 Motor and Votol controller. Looking for some feedback on my plan to wire up the precharge and contactor circuits. precharge.png Goals: - The goal is to have a key-lock switch act as a pre-charge circuit and as the B+ voltage signal to unlock the controller. - The Key lock ignition wil...
by Sine
Jun 20 2019 8:30pm
Forum: E-Vehicles General Discussion
Topic: Votol Controller/QS3000 Precharge + contactor circuits.
Replies: 2
Views: 813

Votol Controller/QS3000 Precharge + contactor circuits.

I just received my QS3000 Mid Drive motor + Votol EM150 controller kit. In the wiring diagram from the manufacturer, it shows that there are pinouts for precharge and contactor signals. However, the "Alarm" harness included with the kit does not include these pins on the connector (does this mean th...
by Sine
Mar 15 2019 12:16am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Trials Motorcycle EV Conversion
Replies: 23
Views: 1641

Re: Trials Motorcycle EV Conversion

From what I've heard the QS motors have better quality than the Danzel. I've looked at both for my next build and the plan is QS. Also I believe their controller is FOC with torque control. Designing around a 100% duty cycle at 15kw is going to take more motor than you need IMHO. The Emotion trials...
by Sine
Mar 13 2019 7:16pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Trials Motorcycle EV Conversion
Replies: 23
Views: 1641

Re: Trials Motorcycle EV Conversion

SlowCo wrote:
Mar 13 2019 5:22pm
Length is in the text: 170mm motor + 35mm axle = 205mm (just over 8 inch).
Yeah, might be a little too chunky for the application. The frame itself is 9 inches wide at its widest point (not the handlebars). The motor will need to be recessed in the frame as falling over is part of the game.
by Sine
Mar 13 2019 7:09pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Trials Motorcycle EV Conversion
Replies: 23
Views: 1641

Re: Trials Motorcycle EV Conversion

If you are going to have the motor "idle" at a certain RPM then low speed commutation is far less important. Getting accurate throttle control would be a higher priority for me. I'd also not worry about continous ratings in a trials environment. How often are you pinned at full throttle, under load...
by Sine
Mar 13 2019 4:40pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Trials Motorcycle EV Conversion
Replies: 23
Views: 1641

Re: Trials Motorcycle EV Conversion

The motor in the kit you linked to is only 4.5kW (6hp) continuous rated. Then the Eastgem d9000 rated at twice (9kW) the continuous power seems a better choice: http://www.eastgem.net/d9000.html Not sure how much import taxes you would have to pay though sent from China? For a trails motorcycle thr...
by Sine
Mar 12 2019 6:42pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Trials Motorcycle EV Conversion
Replies: 23
Views: 1641

Re: Trials Motorcycle EV Conversion

Look at this conversion from jonnydrive where he uses the QS mid drive motor with a chain to the gearbox: https://endless-sphere.com/forums/viewtopic.php?f=28&t=94666&start=125 You might also want to check out Eastgem and their kits. The D7500 would be a great fit at a very nice price: http://www.e...
by Sine
Mar 12 2019 4:58am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Trials Motorcycle EV Conversion
Replies: 23
Views: 1641

Re: Trials Motorcycle EV Conversion

I don't mean the swingarm unit, they sell just the motor and also the controller separately. I'm looking at using the 1kw for a bicycle and it will easily take 4kw efficiently. The 3kw is known to be happy at 15kw. Hmmm, depending on the course the motor behavior will be barely moving at all, but a...
by Sine
Mar 11 2019 5:35pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Trials Motorcycle EV Conversion
Replies: 23
Views: 1641

Re: Trials Motorcycle EV Conversion

You might look at the QS mid drives. Those are cool! But I would think the unsprung weight increase would have profound impacts on the ability to jump the bike. Sprung vehicle weight + rider weight is used to compress the suspension, unsprung weight would absorb energy when the suspension is unload...
by Sine
Mar 11 2019 5:13pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Trials Motorcycle EV Conversion
Replies: 23
Views: 1641

Re: Trials Motorcycle EV Conversion

You might find that is a bit too much motor. 100a continuous is a lot of power. You can likely use something smaller since trials only has short peak power requirements. 26lbs relatively high in the bike, plus the room you lose for batteries will be noticeable. I agree, the problem is they don't se...
by Sine
Mar 11 2019 4:11am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Trials Motorcycle EV Conversion
Replies: 23
Views: 1641

Re: Trials Motorcycle EV Conversion

I really like the functionality of the CA. It seems like it does a lot of the things the Curtis can do internally, but overall just easier to setup and manage. The Curtis itself has its own programming language, my understanding is that almost every aspect of its function can be software defined, bu...
by Sine
Mar 10 2019 9:23pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Trials Motorcycle EV Conversion
Replies: 23
Views: 1641

Trials Motorcycle EV Conversion

I'm planning on doing an EV conversion on a 1998 Gas Gas TX 320 Trials motorcycle. I'll be using the factory transmission, clutch and crank. The plan is to mount the motor in the area where the ICE top end would normally go and couple the motor to the crank with a sprocket/chain drive set or gears r...