Search found 104 matches

by 1N4001
Jan 27 2020 12:16pm
Forum: E-Bike Non-hub Motor Drives
Topic: 1.7kg 1000w mid drive
Replies: 50
Views: 6115

Re: 1.7kg 1000w mid drive

nieles wrote:
Jan 27 2020 10:51am
can you elaborate a bit on how the torque sensing is done?
Look at the video at the 1:00 mark. The tension wheel arm deflects slightly when cranking, which can be measured.
by 1N4001
Jan 23 2020 10:20am
Forum: E-Bike Non-hub Motor Drives
Topic: 1.7kg 1000w mid drive
Replies: 50
Views: 6115

Re: 1.7kg 1000w mid drive

Do you need a crank with freewheel for this? Can you use any kind of battery? What's the maximum voltage?
by 1N4001
Jan 16 2020 4:40pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 1014
Views: 86078

Re: APL's DIY axial-flux motor

Your program really only exports STL? That's very unusual. either I need to convert STL to STEP Forget it. Even if you find something that does this for you, the results will be awkward. Exporting to STL means a loss of information. STP/IGES contain mathematical information, such as circles being de...
by 1N4001
Dec 17 2019 3:00am
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1236
Views: 244415

Re: Compact Field Oriented Controller, ASI + Grin, limited run

This is awesome, Justin! Great for making adjustments on the go, when you don't happen to have your laptop with you :) I do wonder, if you already have OTG and you're planning Bluetooth, wouldn't it be possible to use a smartphone app not only for configuration, but also as a dashboard? This way you...
by 1N4001
Nov 01 2019 8:24pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 1014
Views: 86078

Re: APL's DIY axial-flux motor

Is the motor going to be open to the outside air? You usually only see that with absolute-maximum-power hotrod builds. Here a fan will be beneficial. But if the motor is going to have a sealed shell, there isn't going to be much room for air to move around. A partial oil fill is going to have a much...
by 1N4001
Oct 16 2019 3:25pm
Forum: E-Bike Technical
Topic: Bafang G310 geared hub - 11:1 reduction ratio!!!
Replies: 171
Views: 30087

Re: Bafang G310 geared hub - 11:1 reduction ratio!!!

You need to get the wire out where the phase/hall wires come out. If you can't do that, it won't work. Yes, I'm aware. We are talking about the G310, correct? I can't tell how you managed to route them out. https://i.imgur.com/mdgisRG.jpg Here's the stator. On the bottom is where the phase wires co...
by 1N4001
Oct 16 2019 11:17am
Forum: E-Bike Technical
Topic: Bafang G310 geared hub - 11:1 reduction ratio!!!
Replies: 171
Views: 30087

Re: Bafang G310 geared hub - 11:1 reduction ratio!!!

zukster, please take pictures of how you installed the temp probe and how you routed the wires out of the motor. I tried and couldn't find a route to get it out.
by 1N4001
Oct 12 2019 4:40am
Forum: E-Bike Technical
Topic: Q128C replacement freehub body
Replies: 11
Views: 1354

Re: Q128C replacement freehub body

How did you manage to get it off? It freewheels after all.
by 1N4001
Oct 08 2019 1:09pm
Forum: E-Bike Technical
Topic: Portable 5-8 amp charger
Replies: 27
Views: 1234

Re: Portable 5-8 amp charger

May I hijack this thread? I'm also looking for a reasonable charger, but for 88.2V (21s). I could get a Satiator, but those are a bit too expensive for my tastes. Any recommendations? Thanks! HLGs can also be stacked, in series or parallel Are you absolutely sure this is possible? e.g. put 2x 42V H...
by 1N4001
Sep 13 2019 3:53pm
Forum: E-Bike Technical
Topic: 2019 Motor Simulator, Mid-drives and other updates
Replies: 51
Views: 7068

Re: 2019 Motor Simulator, Mid-drives and other updates

Deionized/distilled/purified water will leech salts and metals out of its surroundings and become conductive and corrosive. There's no way around that, even antifreeze or other corrosion inhibitors will only work for a limited time. Water also will wash out the gear grease while itself not providing...
by 1N4001
Sep 01 2019 3:47am
Forum: E-Bike Technical
Topic: Bafang G310 geared hub - 11:1 reduction ratio!!!
Replies: 171
Views: 30087

Re: Bafang G310 geared hub - 11:1 reduction ratio!!!

Look into putting oil into the G310 to boost its dissipation. Should be good for 1000W+. That’s also an option, I’ve just read the thread about cooling, it seems very efficient. Does the G310 need extra-sealing before putting oil inside it ? What’s the best oil to use ? Classic motor oil, silicone ...
by 1N4001
Aug 31 2019 5:26am
Forum: E-Bike Technical
Topic: Bafang G310 geared hub - 11:1 reduction ratio!!!
Replies: 171
Views: 30087

Re: Bafang G310 geared hub - 11:1 reduction ratio!!!

neptronix wrote:
Aug 30 2019 11:14pm
it'll do a bit more than 1000w i hear.
And hear it you will :lol:
by 1N4001
Aug 30 2019 10:18am
Forum: E-Bike Technical
Topic: Bafang G310 geared hub - 11:1 reduction ratio!!!
Replies: 171
Views: 30087

Re: Bafang G310 geared hub - 11:1 reduction ratio!!!

Look into putting oil into the G310 to boost its dissipation. Should be good for 1000W+.
by 1N4001
Aug 07 2019 1:47am
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 250
Views: 31568

Re: Serious FOCer (84V VESC 6 based controller)

Max is 84V(20s). That will be verified in testing. I'm assuming batteries will sag down a bit during high current loads. Calculating power at 75V loosely accounts for this. I would seriously suggest increasing that to at least 95V, if not 100V. Even with your input caps, inductance in the battery w...
by 1N4001
Jul 13 2019 8:23am
Forum: Battery Technology
Topic: Ufobox's pressure-contact 18650 fused connections
Replies: 27
Views: 1633

Re: New weldless battery system crowdfunfing project

Interesting. Are you using thread inserts as contacts? Those are made of brass, aren't they? You might want to consider making your own contacts out of copper, maybe even with one end closed for more contact surface. Brass has only 1/3 the conductivity of copper. For low-current situations that'll ...
by 1N4001
Jul 12 2019 3:00am
Forum: Battery Technology
Topic: Ufobox's pressure-contact 18650 fused connections
Replies: 27
Views: 1633

Re: New weldless battery system crowdfunfing project

Interesting. Are you using thread inserts as contacts? Those are made of brass, aren't they? You might want to consider making your own contacts out of copper, maybe even with one end closed for more contact surface. Brass has only 1/3 the conductivity of copper. For low-current situations that'll b...
by 1N4001
May 20 2019 4:25am
Forum: E-Bike Technical
Topic: BionX Torque Sensor Help Needed
Replies: 3
Views: 404

Re: BionX Torque Sensor Help Needed

The sensor is glued onto the axle, and both sensor and axle need to be perfectly flat before doing so. You'll need to buy a new sensor (peanuts), cut out the old sensor, clean and smooth the axle flat, solder the new sensor to the cable (taking care not to damage the sensitive leads), then carefully...
by 1N4001
May 19 2019 1:01pm
Forum: E-Bike Technical
Topic: BionX Torque Sensor Help Needed
Replies: 3
Views: 404

Re: BionX Torque Sensor Help Needed

In BionX motors a common problem is the strain gauge sensor detaching from the axle. When this happens you'll either get no output signal, a very weak one, or a sporadic one. It very much looks like this is what happened here. Unfortunately there's no easy fix. If you want to get it working again, t...
by 1N4001
May 16 2019 1:47am
Forum: Motor Technology
Topic: Bionx controller replacement
Replies: 9
Views: 1047

Re: Bionx controller replacement

Yes, they need a 5V supply.
by 1N4001
May 14 2019 7:27am
Forum: E-Bike Technical
Topic: A controller better than Phaserunner?
Replies: 9
Views: 1150

Re: A controller better than Phaserunner?

Are you sure that the PR is to blame and not the configuration? Are you using hall sensors to start? Increasing phase current will also help.
by 1N4001
May 12 2019 4:42am
Forum: E-Bike Technical
Topic: Bafang G310 geared hub - 11:1 reduction ratio!!!
Replies: 171
Views: 30087

Re: Bafang G310 geared hub - 11:1 reduction ratio!!!

It's not, due to the freewheel/clutch. If you want to do regen in a geared motor, you can either buy a clutchless one (such as this) or weld the clutch fixed in your G310.
by 1N4001
May 08 2019 3:15am
Forum: Motor Technology
Topic: High Voltage versus High Current
Replies: 13
Views: 3439

Re: High Voltage versus High Current

I lean towards high voltage. Pros: - Fewer losses due to resisitve heating in wiring - or thinner wires possible, saving weight - Slower wound motor possible, reducing amps needed for same torque, again reducing resisitve losses (remember those are R*I²) Cons: - More complex BMS - Controller needs h...
by 1N4001
May 02 2019 5:37am
Forum: Motor Technology
Topic: help to understand the Grin motor simulator curve
Replies: 2
Views: 366

Re: help to understand the Grin motor simulator curve

As you move toward faster speeds, eg. past 32.7kph as the vertical line indicates, the power (red) begins to decrease. The motor produces a higher counter-voltage the faster it spins, which works against the battery voltage and reduces the possible power output. Either use a faster wind or higher b...
by 1N4001
Apr 27 2019 12:25pm
Forum: E-Bike General Discussion
Topic: BionX, want help connecting up this motor
Replies: 42
Views: 2147

Re: BionX, want help connecting up this motor

You'll also need a Bionx battery and console to make this motor work "the way it's intended". These components communicate with each other via CANBUS and the controller inside your motor won't do anything without this communication. Your only alternative is to open it up and use an external controll...