ElectricMotorcycleForum.com

Thanks

look it up

http://delta-q.com/products/quiq.shtml

Thanks.

Another question. I'm aiming for a 72 volt system and am looking at the battery specs for the Thundersky batteries. The specs state that nominal voltage is 3.2 volts each, charged voltage is 4.0 volts each (and discharged 2.8 V). Should I get 18 batteries at 4 volts each or should I use the nominal voltage of 3.2 volts each and get 22-23 batteries?

I'll likely be using a 72 volt Alltrax AXE 7245 controller.

DC would be a good start, especially if you used a 6.7" motor with the same face mount as an AC motor you might "upgrade" to. They'd be fairly easy to resell too.

Series wound ADC k91-4003 motor with a Synkromotive controller is what I started with, and went to the AC15.

Did the ADC motor and Syncromotive controller work well together?  Any issues in terms of setup, reliablity, etc?

Quote from: Axelwik on October 27, 2010, 04:59:19 AM

Another question:

With an AC motor and controller, for example your AC-15 motor with a controller DC input of between 48 and 84 volts, does the input voltage matter in terms of motor output power and torque (as long as it's between 48 and 84 volts)? It seems to me that the controller, having an integrated inverter, would put out the correct AC voltage, phase, and amperage that the motor needs, right?

Yes. It pushes out the torque a little further on the RPM curve. Going from 48V and the 550A controller, to 84V and a 550A controller you almost double power. And BTW, the voltage on the 1238-7501 can go up to 130V off a fresh charger. I'm building mine for 102.4V nominal (32s6p).


The controller takes in pack voltage and converts that to the requested load on the AC motor at a certain Frequency. Higher frequency, the higher the RPM. Everything is done automatically, but its not trivial. The controller has algorithms inside to calculate voltage, current and frequency.

Thanks. I'm now thinking about using a DC motor to save some money (maybe). I'm just going to have to do some more reading before investing the money. I want to make sure everything works together in the most efficient way possible.

Another question:

With an AC motor and controller, for example your AC-15 motor with a controller DC input of between 48 and 84 volts, does the input voltage matter in terms of motor output power and torque (as long as it's between 48 and 84 volts)? It seems to me that the controller, having an integrated inverter, would put out the correct AC voltage, phase, and amperage that the motor needs, right?

I just joined the forum.

Picked up a rolling chassis the other day (Suzuki Katana) and plan to use LiFePO4 batteries, but can't decide whether an AC induction motor or series DC motor is the right solution. Is the AC motor worth the extra cost (prices have seemed to come down)? I don't want to spend a fortune, but I'm not poor either. My goal is a bike that will have a range of 60 to 100 miles and a top speed of 100 MPH. I have $4,000 to $6,000 to spend. I'll do all the work myself. Am I far off the mark?