Endless Sphere

I remember reading about Steven Roberts way back when in some computer magazine I think. As I recall, that helmet gave him a heads up display and he could actually type using his gaze, head movements or something like that. I don't recall the other two.

Makes you wonder what's going on. Someone is getting scammed. I just don't know who. Given the claim of 20 patents, my first guess is that the Aliexpress bike is being sold illegally. Are you serious? Many of the most successful kickstarters are just alibaba item rebranders and resellers. How could...

This non-electric seems to have the same frame mechanisms

Takes some real "inventing" skills to come up with these "concepts". Here's a version you can buy on aliexpress right now. A little cheaper display. Could probably find another model with a better one, https://www.aliexpress.com/item/16inch-folding-electric-bike-aluminum-alloy-folding-electric-bicy...

I have an ammeter and a wattmeter but it is getting too hot to ride here. Gotta wait for cooler weather. Thanks otherDoc Too hot to ride?!?! Riding an ebike provides a natural wind that acts like inexpensive air conditioning. :^) I was born in Phoenix, so I guess I just don't mind the heat on a bic...

3x 600W supplies would get you 1800 watts of charging What do you mean by supplies in this sentence? The more power you have, the more power you will use. Can we limit the power by the controller or something else? Yes. But anything that you limit can be overridden and most people will be temped an...

3x 600W supplies would get you 1800 watts of charging What do you mean by supplies in this sentence? The more power you have, the more power you will use. Can we limit the power by the controller or something else? Yes. But anything that you limit can be overridden and most people will be temped an...

The bike is looking nice. But a subtle thing hit me as I was looking at it. The flat or semi-gloss black rims are out of place. Those rims should probably be chrome or at least aluminum. Alternatively, but probably visually appealing would be to paint the rims (not the braking surface part though) t...

I'll maybe get an ohm meter depending on how the manufacturer can fix it for me. It's a good idea to have a volt/ohm meter if you have an ebike that you might ever do some repair work on. They don't have to cost much. https://www.amazon.com/AstroAI-Digital-Multimeter-Voltage-Tester/dp/B01ISAMUA6/re...

OK. Turning the Black Curve to "%Grade" causes the odd behavior. Change it to "Load Line" and the simulator works fine. https://www.ebikes.ca/tools/simulator.html?motor=MMAC12T&motor_b=MMAC6T&batt=B4823_AC&cont=C40&throt=90&wheel=20i&mass=204&hp=0&grade=9&bopen=true&axis=mph&blue=Lbs&black=load&grad...

Not sure what is going wrong, but System A shows a 14.7% grade in the chart and System B only 4.3% even though the sliders show 9%.

I don't think your design complements the bike. The shape should have more "flow" to it with curves and shouldn't have simple (constant radius) curves, and should have few or now straight lines and/or 90 degree corners. Just look at the curved tubes on your bike for inspiration. BTW, I think the cre...

The trick is in getting a few fundamentals down and then keeping it simple. There is a ton of detail that you can learn about motors and how they work, but what you need to know from the standpoint of buying or building a bike isn't really all that much. The same goes for batteries and controllers. ...

The bike that has a motor and/or drive train that is best matched to the course and speed the course is ridden would be the most efficient. The voltage run doesn't tell you much if anything about general efficiency. You optimize efficiency by operating the motor at efficient motor RPMs, by staying b...

fechter wrote: ↑

May 14 2019 2:21pm

Pretty hard to filter out the signal from the noise. Who writes these things?

Lawyers usually.

Do you have an ammeter on the bike to monitor what you are getting now?

The actual law: https://legiscan.com/NJ/text/S731/2018

Posting just a single picture with such a limited view is a poor way to help others help you out. All I can offer is to look at those black nuts that the wires pass through to see if they can be loosened enough to let you slide that one cover further down the wire bundles to get a better look inside...

I took all the screws out, and tried to pull by the wires with no luck. Not comming out! It has a nice smell inside and lots of white fluffy cotton like material. I wouldn't pull on the wires. Like fechter said, post some pics and we may be able to give you hints on how to get into it. In the meant...

Several speedometer apps on my phone gave 17 - 18 mph but maybe these apps are not accurate enough. So what do you put in your display as diameter, the actual diameter or the rim diameter ???? You have to hold your speed for a while to get an accurate speed. The indicated speed tends to be delayed....

It was not parallel! I ran ~160v trough it! What do I do to fix the controller? I can't remove it from the casing, no matter how hard I pull. I watched a YT video. Is there like any overvolt protection in it? It's a RisunMotor controller. In a moment of mental dullness, I once plugged my 12vdc to 1...

Edit ok I found it already : CUL 15 (ranging from 10 - 30) : MAX Current Limit set HAL 1 (ranging from 1 - 15) : Magnetic Pole numbers of speed sensor AS5 12 (ranging from 0 - 12) : # of Cadence magnets Hd6 0 (ranging from 0 or 1) : sets the throttle to 6km/h; 1=ON, 0=OFF (default 0) HdP 0 (ranging...

Thanks wturber, Unload (so the rear wheel is from the floor) the C965 diplay (Tucano branded but it probably a Dillinger made LCD) gives a speed of 35.4 kmh (= 22.1 mph). Does this mean like you suggested that my battery pack is not ok if I only get a speed of 17.5 mph loaded (i am not really heavy...

My battery is 48 V/12 Ah and the charger is a 54,6 V and 2 A. With display I meant the C965 display and not the level indicators leds at the battery. I guess if the indicator at the charger changes from red to green the charging process stops and the 48 V has been achieved, so the battery is full, ...

Is there an expert on this forum who can help me please ? I'm no expert, but I'm pretty sure you have three options. 1) Larger wheel. 2) Higher voltage 3) Different motor Given the amp output of your controller, it is unlikely that power from the controller is the problem unless you happen to have ...