Recent content by rachdatu

Fantastic race. Congrat for the report and the data. Good to know that you were in Switzerland, in Valais (flat valley) and then up to one of these "legendary" Swiss pass (Simplon pass). Switzerland is a nice country to test ebikes, don't need to go far to find all kind of profiles. A bit of...

I replaced C1 with 0.1 micro; it still doesn't work. Switched it ON --> OK, then I could not switch it OFF; measured the resistance between D and S: 250 Ohm. I still need to test with the small resistor when I will find one. In the meantime, I am going to get another MOSFET like the IRLB3036...

Check http://www.kreuzotter.de/english/espeed.htm That's for a normal bike (no bat!). This will give you a rough idea how much power you need for your battery. And keep in mind, if you double your speed, you need 8 times more power...(valid above ~25 km/h) There are some nice formulas at the...

Ok, Thanks for your suggestions. I will have a look at that in a couple of days. I still have 10 MOSFETs (blew only 2!) and they are not expensive... Tomorrow, it's the Swiss National Day. I will take some fresh air up in the mountains. Walter

Hello I have built the "inrush limiter 3". It's quite simple and works just well. Thanks to Richard Fechter. Now, I would like to use the same circuit to connect it to a buck/boost converter. So imagine just replacing the Ebike controller by the converter. By the way, it's for an indoor...

Hi notger Are you still looking for this firmware? I used to download version 5.0 (hp_1420net3_5a0.bin) but I never used it. I can send it to you. P.S. I am not responsible if your device doesn't work anymore...

6 days (weekend in between) from the order to the delivery at my door...

Ordered 60 pieces (NCR18650PF 2900mAh) at NKON in the Netherlands. One thing they need to improve: shipping box. It's just too flimsy for cells.

Hello Very interesting project. Question: How long is going to last one of these batteries linked in this thread? Some maths: 5000mAh, 3S, that's 55.5 Wh (5*3*3.7) In joules: 55.5*3600=199800 Let's assume a 13s4p configuration, that's 52 batteries to weld. 6 welds per batterie on each side...