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  1. O

    25mph new build.

    I'm using a 36V Q100CST in the 328RPM winding with a 36V battery. My typical use is at 250W electrical power, for 200W mechanical output. On level ground with no headwind, some decent pedaling gets me to 40km/h (25mph). The ebikes.ca simulator, says motor will go up to about 350W at 40km/h...
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    Advice from Aussie ebikers - help me decide on best option

    I'm in a similar position, having gone from 12km to 23km across Adelaide. It's taking me 70 minutes, and it's hard to justify the extra hour a day it takes compared to driving. I've been looking at what sort of time electric power would add. Of the 70 minutes, around 15 are stopped at...
  3. O

    Recommendations for first ebike

    I used to commute around 12km (7.5mi) each way on a basic pedal commuter bike. To cruise at 24km/h (15mph) by pedal alone isn't hard with moderate fitness, though the average speed may be a bit less after taking stops into account. For this sort of commute on flat ground I wouldn't bother with...
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    350W controller for 250W motor?

    You could try to evaluate if you are using the current motor at an efficient operating point. Watch for if you are using it at less than half the no-load speed, because efficiency drops off pretty quickly at lower speeds. Also make sure your controller isn't trying to push too much power...
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    Simple PAS to throttle converter using an Arduino Nano

    Thanks for posting the design and source code. I've been thinking I might do something like this if the PAS on the controller I get doesn't behave the way I like. The thing about doing your own is that you can tune it to behave the way you want. It's fairly straightforward to vary the...
  6. O

    Building/buying 200W in Australia

    Thanks for the ideas. I am looking at the BMS Q100C with the cassette cluster, but it isn't a lot more money to go up to the Q128C for the extra power capability. It's just a bit more weight and more risk of a disk caliper fouling it, so it's something to consider. It looks like it may be...
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    Programmable Controllers

    Thanks for all the input. It seems there's not much interest in programming up controllers in the low power products, but it may be able to be done with some of the cheap commodity controllers. That's handy information about the em3ev one supporting some level of programming. I presume...
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    Programmable Controllers

    I've been looking through these forums and the online sellers like BMS/GBK/EM3 for a controller, but am struggling to find much information about the programming of them. For each of the controllers, I was expecting to find documents and/or webpages showing what you can configure and how to do...
  9. O

    How do police test compliance of ebike (Australia)

    It may vary state to state, but the wording I've seen for the EN 15194 category is that the onus for compliance testing is placed on the manufacturer, who then adds a compliance plate that states it meets that standard. It's assuming that ebikes will be sold via retail channels as complete...
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    Building/buying 200W in Australia

    My work is changing to a 25km each way commute, and cycling is looking like taking too long, so I'm looking at some electric assistance to get the travel times down. I've ridden the route, and it took around 70 minutes each way on a mountain bike with road tyres. My speed was mostly in the...
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