Search found 11 matches

by specing
Aug 14 2019 6:44pm
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 3445
Views: 158372

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

Hello, I am looking at getting one of these in the near future. How accurate is the torque sensor, or rather, how accurate is the human power reading generated from it? As far as the 16kB/32kB issue is concerned, is it possible to replace the stm8 onboard? From what I've seen around the web, the con...
by specing
Aug 14 2019 6:09am
Forum: E-Bike Technical
Topic: Help me disassemble this aikema motor
Replies: 11
Views: 291

Re: Help me disassemble this aikema motor

7% is not steep at all, I can do 10-15 km/h up such a hill on leg power alone. One of the hills around here that I climb is 26% of the trip in the 10-15% grade, 7% in 16+% grade and is representative of the hill roads around here: https://maps.openrouteservice.org/directions?n1=46.128936&n2=14.5972...
by specing
Aug 13 2019 7:00pm
Forum: E-Bike Technical
Topic: Help me disassemble this aikema motor
Replies: 11
Views: 291

Re: Help me disassemble this aikema motor

I'm not sure if I understand that set-up... I've looked into ordering and shipping is indeed hella expensive, even the basic KT sinewave controllers (which I'd like for the FOSS firmware upgrade) that are listed for ~$25 add $20(bmsbatery)-$50(pswpower) when checkout is attempted. What is going on?...
by specing
Aug 13 2019 2:30pm
Forum: E-Bike Technical
Topic: Help me disassemble this aikema motor
Replies: 11
Views: 291

Re: Help me disassemble this aikema motor

I saw one of those crude solutions (however the target motor was different). My problem with this is that I simply have nothing with which to make a 35mm hole into metal. Thus my option is some hard wood with perhaps a metal plate added to the side to reinforce it (a plate that only has a hole for t...
by specing
Aug 13 2019 4:14am
Forum: E-Bike Technical
Topic: Help me disassemble this aikema motor
Replies: 11
Views: 291

Re: Help me disassemble this aikema motor

Thanks for the response I have drilled into a block of wood and mounted screws in it, but all I achieved was the wood cracking. I'll need a stronger piece of wood. Any idea of the required force to unscrew it? Max motor force + max pedal force applied in reverse? How much is this? The motor's connec...
by specing
Aug 12 2019 11:37am
Forum: E-Bike Technical
Topic: Help me disassemble this aikema motor
Replies: 11
Views: 291

Help me disassemble this aikema motor

Greetings all, sadly this motor left its last breath near the top of a 300m hill (grade ~15) Symptoms (bicycle flipped upside down = almost no load): - when starting, it jerks back & forth. - when it picks up speed, it produces much more noise than it used to. Any ideas how to open it up? I've remov...
by specing
May 21 2019 12:55pm
Forum: E-Vehicles General Discussion
Topic: Cheap FOCer (VESC 4.12 based design)
Replies: 199
Views: 13142

Re: Cheap FOCer (VESC 4.12 based design)

i think you are mixing up two different things here. .. soldering something to a pad on a pcb is no problem. for the pcb it wont matter if yo solder a pin header in the holes or just a wire. It wont matter for the PCB, but the problem will be inside the wire, as the solder will creep up under the i...
by specing
May 20 2019 5:33pm
Forum: E-Vehicles General Discussion
Topic: Cheap FOCer (VESC 4.12 based design)
Replies: 199
Views: 13142

Re: Cheap FOCer (VESC 4.12 based design)

I'm doing a 12 FET version for my newer controller design. Have you found where 12 FETs are cheaper than the 6 FETs even with the 10unit pricing? No, I have not been looking for them, yet. You don't have to use the standard pin headers. You can use whatever connector you want with 0.1" pitch. You a...
by specing
May 19 2019 5:40pm
Forum: E-Vehicles General Discussion
Topic: Cheap FOCer (VESC 4.12 based design)
Replies: 199
Views: 13142

Re: Cheap FOCer (VESC 4.12 based design)

$3.3 * 6 = $20 $1.19 * 6 = $7.2 They could be better, but there is only so much upgrading that can be done before it becomes Not-So-Cheap-Focer. Is there an assesment at how much more efficiency we'd get from those $13? 1. Have you considered going for 12 mosfets from the start? 10+ and we get the ...
by specing
Apr 08 2019 6:15pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 775
Views: 92468

Re: kWeld - "Next level" DIY battery spot welder

Heh. When I see "DIY" on something, I immidiately expect Velleman-style DIY where you are given a bag (box) of parts and wished good luck. Anyway, I did look for bus bars on Arrow, but the search comes up with either circuit breaker mounts or 1m long rods for >25 eur like https://www.arrow.com/en/p...
by specing
Apr 07 2019 7:20am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 775
Views: 92468

Re: kWeld - "Next level" DIY battery spot welder

Being the cheapskate that I am, I am now wondering why you people (kWeld, malectrics,..) use bus bars? They are an unnecessary cost when you can just take a thick stranded cable, peel 10 cm off of it and distribute the strands evenly to each MOSFET. This also gets rid of connector crimping and the a...