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by wturber
May 21 2019 8:39pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 176
Views: 10671

Re: Around the world on a solar ebike

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.
by wturber
May 20 2019 12:50am
Forum: E-Bike General Discussion
Topic: "the one"
Replies: 12
Views: 369

Re: "the one"

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...
by wturber
May 19 2019 1:06am
Forum: E-Bike General Discussion
Topic: "the one"
Replies: 12
Views: 369

Re: "the one"

This non-electric seems to have the same frame mechanisms

by wturber
May 19 2019 12:23am
Forum: E-Bike General Discussion
Topic: "the one"
Replies: 12
Views: 369

Re: "the one"

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...
by wturber
May 18 2019 11:52pm
Forum: E-Bike Technical
Topic: Using the Wangdd22 1500W 30A DC Boost Converter on an ebike
Replies: 206
Views: 16971

Re: Using the Wangdd22 1500W 30A DC Boost Converter on an ebike

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...
by wturber
May 17 2019 4:23pm
Forum: E-Bike General Discussion
Topic: Help me to create my solar panel trike with caravan trailer
Replies: 70
Views: 780

Re: Help me to create my solar panel trike with caravan trailer

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...
by wturber
May 17 2019 4:22pm
Forum: E-Bike General Discussion
Topic: Help me to create my solar panel trike with caravan trailer
Replies: 70
Views: 780

Re: Help me to create my solar panel trike with caravan trailer

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...
by wturber
May 17 2019 8:50am
Forum: E-Bike General Discussion
Topic: Giant cruiser budget build
Replies: 64
Views: 5040

Re: Giant cruiser budget build

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...
by wturber
May 16 2019 4:14pm
Forum: E-Bike General Discussion
Topic: Blown new MOSFET controller!
Replies: 36
Views: 623

Re: Blown new MOSFET controller!

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...
by wturber
May 15 2019 4:23pm
Forum: E-Bike General Discussion
Topic: 12 turn Hub-motor vs Mid-drive for hill climbing ??
Replies: 20
Views: 711

Re: 12 turn Hub-motor vs Mid-drive for hill climbing ??

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...
by wturber
May 15 2019 4:17pm
Forum: E-Bike General Discussion
Topic: 12 turn Hub-motor vs Mid-drive for hill climbing ??
Replies: 20
Views: 711

Re: 12 turn Hub-motor vs Mid-drive for hill climbing ??

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%.
by wturber
May 15 2019 10:44am
Forum: E-Bike General Discussion
Topic: Giant cruiser budget build
Replies: 64
Views: 5040

Re: Giant cruiser budget build

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...
by wturber
May 14 2019 10:20pm
Forum: E-Bike General Discussion
Topic: 36v vs. 48v Range Question.
Replies: 8
Views: 245

Re: 36v vs. 48v Range Question.

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. ...
by wturber
May 14 2019 6:36pm
Forum: E-Bike General Discussion
Topic: 36v vs. 48v Range Question.
Replies: 8
Views: 245

Re: 36v vs. 48v Range Question.

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...
by wturber
May 14 2019 5:19pm
Forum: E-Bike General Discussion
Topic: New Jersey ( USA ) pending legislation
Replies: 17
Views: 768

Re: New Jersey ( USA ) pending legislation

fechter wrote:
May 14 2019 2:21pm
Pretty hard to filter out the signal from the noise. Who writes these things?
Lawyers usually.
by wturber
May 14 2019 5:15pm
Forum: E-Bike Technical
Topic: Using the Wangdd22 1500W 30A DC Boost Converter on an ebike
Replies: 206
Views: 16971

Re: Using the Wangdd22 1500W 30A DC Boost Converter on an ebike

Do you have an ammeter on the bike to monitor what you are getting now?
by wturber
May 13 2019 7:32pm
Forum: E-Bike General Discussion
Topic: Blown new MOSFET controller!
Replies: 36
Views: 623

Re: Blown new MOSFET controller!

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...
by wturber
May 13 2019 3:15pm
Forum: E-Bike General Discussion
Topic: Blown new MOSFET controller!
Replies: 36
Views: 623

Re: Blown new MOSFET controller!

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...
by wturber
May 13 2019 11:03am
Forum: E-Bike Technical
Topic: wheel diameter in display
Replies: 2
Views: 75

Re: wheel diameter in display

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....
by wturber
May 13 2019 10:47am
Forum: E-Bike General Discussion
Topic: Blown new MOSFET controller!
Replies: 36
Views: 623

Re: Blown new MOSFET controller!

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...
by wturber
May 12 2019 11:51am
Forum: E-Bike Technical
Topic: Rated power ?
Replies: 26
Views: 469

Re: Rated power ?

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...
by wturber
May 12 2019 11:38am
Forum: E-Bike Technical
Topic: Rated power ?
Replies: 26
Views: 469

Re: Rated power ?

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...
by wturber
May 12 2019 11:07am
Forum: E-Bike Technical
Topic: charging a battery at a different voltage setting in the display
Replies: 5
Views: 138

Re: charging a battery at a different voltage setting in the display

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, ...
by wturber
May 12 2019 12:52am
Forum: E-Bike Technical
Topic: Rated power ?
Replies: 26
Views: 469

Re: Rated power ?

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 ...