Search found 96 matches

by Ivanovitch_k
Aug 05 2018 4:18am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1860
Views: 261170

Re: My Bafang Ultra Mountain Bike! Frey AM1000

The charger plug looks like a 3 pin Mini-DIN, but without the square center post. Do they come without that post? Can you rid yourself of it's not DIN. The closest match I have found is GX-16 3-pins. However, the stock cable is Reention-branded (the mfg. of the battery case), and It looks like the ...
by Ivanovitch_k
Aug 04 2018 7:20pm
Forum: E-Bike Non-hub Motor Drives
Topic: How much power is too much for a standard mtb?
Replies: 14
Views: 1378

Re: How much power is to much for a standard mtb?

If you shift and keep the revs up when accelerating, should be fine. Order a few spare chains(like $20 kmc x11-93) and switch to a steel cassette. Big selection on aliexpress for $25. would recommend the KMC X11-E chains instead, they are specifically reinforced for ebike use. I get 3500-4000km out...
by Ivanovitch_k
Aug 04 2018 3:33am
Forum: General Discussion
Topic: can a switching pwr supply withstand 60 on/off cycles a day?
Replies: 20
Views: 1946

Re: can a switching pwr supply withstand 60 on/off cycles a day?

UPDATE: 7+ years and it is still working great 8) How many have a fridge 29+ years old? haha, this story Is almost similar to my Liebehrr fridge made in West Germany (so before URSS collapse). I replaced the failed mechnical thermostat with a cheap thermocouple PID + SSR. I also put a PC 12cm fan i...
by Ivanovitch_k
Aug 03 2018 4:31pm
Forum: Battery Technology
Topic: Highest capacity 18650 cells
Replies: 68
Views: 9462

Re: Highest capacity 18650 cells

pouches or tubes, lithium batteries are dangerous and will go thermonuclear given the right circumstances.
That's a fact we have to deal with. And this is not the thread for that :P
by Ivanovitch_k
Jul 31 2018 4:55pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1860
Views: 261170

Re: My Bafang Ultra Mountain Bike! Frey AM1000

According to the AM1000 specs on Alibaba, the bike features the "MAGURA MT5 Ne [brake lever] with brake sensor". On the Magura website I could only find the "MT5e", which was specially designed for e-bikes and S-Pedelecs and has a brake light switch. the MT5 "-E" is basically just a switch terminat...
by Ivanovitch_k
Jul 31 2018 2:00pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1860
Views: 261170

Re: My Bafang Ultra Mountain Bike! Frey AM1000

Ivanovitch, how is your battery rebuild going? still awaiting delivery of some insulation materials... I don't know if this is the right place to ask this but; is it possible to tap into the brake lever motor cutoff to opporate a rear brake light? As evidenced by Tom L post and followup observation...
by Ivanovitch_k
Jul 30 2018 3:53pm
Forum: Battery Technology
Topic: Highest capacity 18650 cells
Replies: 68
Views: 9462

Re: Highest capacity 18650 cells

Yea I did, In one word the cycle life of Samsung 35E at 0.5C-1C 100% DoD is disaster. edit: should've hit that refresh button, got severely toasted on that LVC thingy :lol: sheeeii**** might explain why sammy says the cutoff voltage is 2.65V vs 2.5 for most other cells ? Looking forward to your new...
by Ivanovitch_k
Jul 30 2018 3:42pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1860
Views: 261170

Re: My Bafang Ultra Mountain Bike! Frey AM1000

eltee wrote:
Jul 30 2018 3:30pm
My question is how hard was it to assemble? I have never put together a bicycle before, much less one with a motor.
get the front wheel in. Screw in the bars. That's kinda it.

AM1000 assy here:

by Ivanovitch_k
Jul 29 2018 5:34pm
Forum: Battery Technology
Topic: Highest capacity 18650 cells
Replies: 68
Views: 9462

Re: Highest capacity 18650 cells

My standard 100% DoD cycle life test is 0.5C charge and 1C discharge of nominal capacity. Translated to MJ1 it is 1700mA charge and 3400mA discharge current. LG MJ1 is holding its initial internal resistance (and capacity at 1C rate) almost to the death. On the other side Sanyo GA internal resistan...
by Ivanovitch_k
Jul 29 2018 12:40pm
Forum: E-Bike Technical
Topic: Hilarious and informative BBSHD teardown
Replies: 3
Views: 502

Re: Hilarious and informative BBSHD teardown

Nice, in the end he made it chooch again !
by Ivanovitch_k
Jul 23 2018 5:53pm
Forum: E-Bike Technical
Topic: BAFANG BBSxx change settings on the fly (aka 'cop button') and BBSxx communication protocol
Replies: 23
Views: 7147

Re: BAFANG BBSxx change settings on the fly (aka 'cop button') and BBSxx communication protocol

fechter wrote:
Jul 23 2018 8:02am
If enough of the protocol gets deciphered, it would be possible to make your own display unit with custom features, including the magnet switch.
this is well underway at the french forum. ESP32 implementation.
by Ivanovitch_k
Jul 14 2018 1:00pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1860
Views: 261170

Re: My Bafang Ultra Mountain Bike! Frey AM1000

you can use luna wrench or the bottom bracket shimano TL-FCsomething tool (beware, there are different Ø that look almost the same).
by Ivanovitch_k
Jul 13 2018 1:46am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1860
Views: 261170

Re: My Bafang Ultra Mountain Bike! Frey AM1000

One could also buy self extracting isis bolts (in the tool less variant) instead of a compatible puller. I don’t know if they work with standard isis cranks tho...

I have the SRAM EX-1 isis crankset and they come with these. You only need an 8mm hex bit for both install & removal :D !
by Ivanovitch_k
Jul 12 2018 5:17pm
Forum: E-Bike Non-hub Motor Drives
Topic: BBS02B 750W overheated - problem
Replies: 8
Views: 1270

Re: BBS02B 750W overheated - problem

windings are discolored. They might be toast :(
by Ivanovitch_k
Jul 12 2018 4:02pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1860
Views: 261170

Re: My Bafang Ultra Mountain Bike! Frey AM1000

what is correct tool to remove the cranks? My old puller didn´t work. edit. So are these ISIS cranks or Octalink or something completely else. they are ISIS. This is strange because a square taper puller should work with them. Did you try some grease ? Maybe the puller didn't went all the way in ? ...
by Ivanovitch_k
Jul 11 2018 1:39pm
Forum: E-Bike Technical
Topic: minimum inner rim width for a 3" tire ?
Replies: 13
Views: 818

Re: ?________________ minimum inner rim width for a 3" tire ?

That chart is so inconsistent as to be more of a fashion guide than a technical reference. this chart is only for DT Swiss rims & wheels and it surely accounts for liability / safety margins. That's why it doesn't include 5" rims as they don't produce any. For the max tire pressure, as annotated in...
by Ivanovitch_k
Jul 10 2018 6:28pm
Forum: E-Bike Technical
Topic: minimum inner rim width for a 3" tire ?
Replies: 13
Views: 818

https://reho.st/self/c5af5d26f5f5f41aa2dbc1cdaa771a31d14237ea.png DT Swiss source for 3.0" wide tires, they allow rims inner width ranging 25 - 50mm. I've personally been using 2.4" tires on 19mm inner width rims for > 10k km at minimal recommended pressure. No issues whatsoever even with high-spee...
by Ivanovitch_k
Jul 10 2018 4:39pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1860
Views: 261170

Re: My Bafang Ultra Mountain Bike! Frey AM1000

When I tried to switch it on, nothing. Not even the basic green battery light (on the actual battery) illuminated, which I thought was weird. So I plugged in the charger. The light turned red but no fan noise from the charger, just a single click. So I removed the battery and plugged in the charger...
by Ivanovitch_k
Jul 10 2018 3:16pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1860
Views: 261170

Re: My Bafang Ultra Mountain Bike! Frey AM1000

The thought of taking apart the motor to replace gears fills me with dread. Anyone any ideas what could have gone wrong? Uh, the haul back home must have been a challenge :| The display doesn't lit at all ? You said you could hear it spinning but the chainring remained still ? The 3-pawl clutch cou...
by Ivanovitch_k
Jul 09 2018 2:51pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1860
Views: 261170

Re: My Bafang Ultra Mountain Bike! Frey AM1000

Ender2000 wrote:
Jul 09 2018 11:00am
Are these bikes quick release or thru axel in the rear wheel?
R boost 148 TA Ø12mm
F boost 110 TA Ø15mm
by Ivanovitch_k
Jul 08 2018 9:59am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1860
Views: 261170

Re: My Bafang Ultra Mountain Bike! Frey AM1000

What is the maximum amps that can be programmed on the controller? Only 30? How does Luna, and how could we, reprogram to pull a full 2-3000watts? Yes, 30 Amps. Luna replaces the current shunts on the controller to make the brainbox believe less amps are flowing. They possibly change the FETs too, ...
by Ivanovitch_k
Jul 07 2018 6:35pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1860
Views: 261170

Re: My Bafang Ultra Mountain Bike! Frey AM1000

+1

Ivy answers fast and on point.

I deal a lot with China during my day job and It's actually quite refreshing to see a Chinese manufacturer this responsive.

Kudos to them !
by Ivanovitch_k
Jul 07 2018 10:50am
Forum: General Discussion
Topic: Would you be willing to crowdfund ES development?
Replies: 39
Views: 3155

Re: Would you be willing to crowdfund ES development?

same here, I don't like subs.

Maybe have both, sub and 1-time ?
by Ivanovitch_k
Jul 07 2018 6:41am
Forum: Battery Technology
Topic: Speedict neptune lite
Replies: 120
Views: 15245

Re: Speedict neptune lite

I just got a Neptune 15, here is what I intend to do with it + mini review of the BMS itself: I'm currently designing a custom logging and control board with all the connectivity you can get ( 3G / 4G / Wifi / BT / GPS ) embedded in the bike. The end goal is to access it with a website, possibly ext...