Endless Sphere

Nice build! I was wondering how the wcec controller is holding up? I ordered one for myself.

Just something to consider; is that Luna controller programmable? I've used an Infineon type controller on my Magic Pie 2 and it has worked great. The controller has been rock solid.

Does anyone have the motor parameters for a Magic Pie 4 that can be used on the ebikes.ca motor simulator? I'm trying to run a simulation but I don't have the knowledge/details needed to simulate a Magic Pie 4.

rpm/V
Nm/A
Rmotor
Lmotor
poles
a0
a1

In a quest to max out my performance, I'm trying to get me 12 fet em3ev Infineon controller tuned for mt 5T 1500W Leafbike hub motor. I also have a Magic Pie 4 on the front wheel. Observations and data: My battery's BMS will cut out if I hit its 60 amp limit for more than five seconds. The Magic Pie...

It is not a full enclosure but it fits my em3ev triangle pack nicely. Its just some 22 gauge steel bent up to fit the bike frame and fastened with u bolts. There are some metal loops fastened to the side to anchor the hook and loop straps that secure the battery down. IMG_20180802_110037.jpg IMG_201...

Thanks for the input folks, much appreciated! 8) I am running my pack at the max discharge rating so no headroom here. It is definitely something to consider for a future pack but the problem is my power addiction takes over and I would probably max that one out too! :) For the record my ride is onl...

The colder days have arrived here and I've started preheating my pack before riding. I usually try and heat the pack to around 30 Celsius. My understanding is that a higher starting temperature will reduce the internal resistance of the cells. This seems to work well as it keeps my max power and spe...

Does anyone know what is up with the shipping costs on http://www.cyclone-tw.com ?

I wanted to price out a kit but when I add it to my cart (PayPal or not), the shipping cost is is 10X the amount of the order!
For example:

Em3ev offers a 5% discount if you pay via bank transfer instead of paypal. Don't forget to check shipping costs to you from em3ev vs goldenmotor

Can you post so photos of the controller? That would give us a better idea what you are working with. It looks like the connections may be enclosed under the battery.

Just wanted to give this thread a bump; mostly for the members who have joined since the map's creation.

Welcome to the forum. If you haven't tried it already; try the motor simulator to see if a hub motor is up to the challenge. http://www.ebikes.ca/tools/simulator.html I would recommend an Infineon type controller from em3ev as they are fully programmable and fairly well built. A direct drive hub mot...

Another difference is that the MagicPie and the LeafBike have different turn counts which makes for different RPMs per Volt.

Try running it on 12V very briefly and see if the brightness is the same. Measure the current at 8V and 12V. If the current is going up as the voltage goes up, stop. If the current goes down with increasing voltage that means it has a DC-DC converter built in. Thanks Alan, it was a good test but......

Excellent, thanks for the suggestion. I will try that test.

dustNbone wrote: ↑

Sep 11, 2018 1:40 pm

Basically I'm saying a 4P battery will last more than twice as long as your 2P battery, not to mention it will perform better at 40A.

I would agree there. Go with the largest, best performing battery you can afford.

I bought myself one of these lights: $_10.jpeg https://www.ebay.ca/itm/40000LM-16x-XML-T6-3-Mode-LED-Bike-Bicycle-Lamp-Cycling-Torch-Headlight-Headlamp/401395413780?ssPageName=STRK%3AMEBIDX%3AIT&var=671022505023&_trksid=p2057872.m2749.l2649 It is similar to the one Matador posted. The light is very ...

@wturber Avoiding those situations would be ideal; however my route is more of a "pick your poison" situation. My alternate route involves a different set of challenges such as a higher road speed and longer distance. I generally travel the same speed as traffic mostly because I don't like people pa...

I just wanted to share an observation that I've noticed the last couple of years while commuting to work on my electric bicycle. Perhaps its just me or maybe its just the other drivers in my area. I've noticed that aggressive drivers (the kind that follow too close or want to pass simply because you...

If you can add a temperature sensor to monitor the motor windings, that would help you keep an eye on it.

Thanks again for the excellent test. This is a very interesting cell, if I was to go with a 21700 cell; this would be it.

For a mirror, I highly recommend one of these: https://www.ebay.com/itm/Original-Bike-Peddler-Take-a-Look-Bike-Helmet-Eyeglass-Visor-Mirror-Full-Length-/331534929744 it clips to sunglasses or helmets with a visor etc... I can't commute without mine. It takes a few rides to get used to it but its nic...

I am finally ready to purchase one of these hard-case triangle packs soon and I'm wondering how you folks are mounting the battery to your bike.

Thank you for the side by side comparison. I have seen the graphs but having them side by side helps show the difference. As far as actual numbers from the graphs this is what I see: 25R @ 10 amps sags to 3.85 volts at the 0.1 aH mark 30Q @ 10 amps sags to 3.82 volts at the 0.1 aH mark 25R @ 15 amps...

I am thinking of purchasing a 14S6P battery soon (em3ev) but I wan't to make sure I am choosing the correct cell type. I am currently using a 14S5P pack of Samsung 30Q cells but I am starting to feel too much voltage sag for my liking. I am pulling approximately 65 amps peak and about 25-30 amps con...