Search found 34 matches

by g1nko
Nov 27 2016 2:42pm
Forum: Battery Technology
Topic: Bionx - attempting 48v rebuild
Replies: 9
Views: 1519

Bionx - attempting 48v rebuild

I know there's lots of advice on here saying you can't rebuild a 48v canbus Bionx battery, but hey, what's the deep end of the pool for if not jumping in foolhardily. My battery wasn't holding a charge anyway (from full charge to discharged in about 3 miles), so I figured "What do I have to lose?" I...
by g1nko
May 13 2014 3:51pm
Forum: E-Bike General Discussion
Topic: Q85 motor makes a horrible noise. Shot?
Replies: 3
Views: 632

Re: Q85 motor makes a horrible noise. Shot?

Good call, YKick. I knew the Infineon controller was supposed to auto-detect the hall sensor wiring, but I started there. I hadn't done such a good job crimping one of the wires when I shortened the cable and it had worked loose.

I crimped a new end on and now everything works perfectly.
by g1nko
May 13 2014 6:54am
Forum: E-Bike General Discussion
Topic: Q85 motor makes a horrible noise. Shot?
Replies: 3
Views: 632

Q85 motor makes a horrible noise. Shot?

My run on a 36v Q85 250w front hub motor with an Infineon 20A controller and a 48v 10Ah LiPo pack. Everything was running great the last few weeks until this morning. When the PAS would kick in, the motor would bind, make a horrible squawking noise, and the watts readout on the CA would jump from th...
by g1nko
Feb 02 2014 2:17pm
Forum: E-Bike General Discussion
Topic: Bionx install. A good shop for it in central NJ?
Replies: 8
Views: 489

Re: Bionx install. A good shop for it in central NJ?

Not a direct response to your question about central NJ, but I own a BionX and it's what you say: user friendly and easy to deal with. I built a second ebike with a front hub motor and RC lipo and the BionX is much easier to feed and maintain. You are paying a premium for the package, but it's worth...
by g1nko
Feb 02 2014 10:04am
Forum: E-Bike General Discussion
Topic: Running dynamo lights off a battery.
Replies: 1
Views: 243

Running dynamo lights off a battery.

Trying to power a B&M Eyc from my battery: I have a converter from Grin that steps down my 48v battery to 6vdc. I was using this to power a B&M Cyo and a tailight without any problems. Then I came out of the market the other day and saw that someone had decided to liberate my headlight. I replaced t...
by g1nko
Jan 13 2014 8:48pm
Forum: E-Bike General Discussion
Topic: Enough juice to make it?
Replies: 27
Views: 2491

Re: Enough juice to make it?

Thanks to everybody who contributed info on this thread and gave me confidence I could make it on my new bike. The weather hasn't been cooperative with temps in the single digits and snow. With temps today near 50, today was my first opportunity to take the bike back and forth to work and the bike p...
by g1nko
Jan 03 2014 11:40am
Forum: E-Bike General Discussion
Topic: CycleAnalyst V3 setup questions.
Replies: 6
Views: 546

Re: CycleAnalyst V3 setup questions.

Just MHO, but the Guide does not precisely eschew obfuscation. I find it difficult to follow and relevant information is scattered across it in places that don't necessarily lend themselves to discovery. I've done my fair share of technical writing over the 24 years I've been in IT and appreciate ho...
by g1nko
Jan 02 2014 10:38pm
Forum: E-Bike General Discussion
Topic: CycleAnalyst V3 setup questions.
Replies: 6
Views: 546

Re: CycleAnalyst V3 setup questions.

For future reference, I finally figured this out.

With no throttle, the voltage was 0.85v. The Throttle Min Input was set to 0.80v. Essentially the Thun never kicked in because it always thought the throttle was engaged. I changed the Throttle Min Input to 0.90v and, voila, she works, the PAS.
by g1nko
Jan 02 2014 9:21am
Forum: E-Bike General Discussion
Topic: Enough juice to make it?
Replies: 27
Views: 2491

Re: Enough juice to make it?

I have a '73 Peugeot retrofitted with a Bionx SL350 HT RR 48v system with an 8.8Ah Li-Ion battery. Bionx claims 423Wh. I can make my full 16mi round-trip commute on this battery, but one thing I have definitely noticed is the battery is temperature sensitive. If temps are above freezing, I easily ha...
by g1nko
Jan 01 2014 4:34pm
Forum: E-Bike General Discussion
Topic: Enough juice to make it?
Replies: 27
Views: 2491

Re: Enough juice to make it?

It's a Q85 36V 250W geared hub motor. I'm over-volting it to 48v.
by g1nko
Dec 31 2013 6:30pm
Forum: E-Bike General Discussion
Topic: Enough juice to make it?
Replies: 27
Views: 2491

Re: Enough juice to make it?

Harness, y-cable; potato, po-tah-to...I meant the y-cable. Maybe it came loose, it didn't seem like it did but that is the only logical explanation.
by g1nko
Dec 31 2013 4:33pm
Forum: E-Bike General Discussion
Topic: Enough juice to make it?
Replies: 27
Views: 2491

Re: Enough juice to make it?

Just FYI, it was 6 cells: one pack in a parallel wired pair. Three of the 6s packs looked as I would have expected, one 6s pack had high voltage. I can't figure out how that happened. All the voltages read correctly at each part of the wiring. It makes no sense. I switched the harnesses and take ano...
by g1nko
Dec 30 2013 1:23pm
Forum: E-Bike General Discussion
Topic: Enough juice to make it?
Replies: 27
Views: 2491

Enough juice to make it?

I'm running lipo batteries in a 12s2p config. Each pack is 5Ah so I should be getting 10Ah total. My commute is 16 mi round trip, so I took an 8.5 mi test ride to see the numbers before committing to getting to work and back on a new bike. Because the batteries are also new, I ran them through a cou...
by g1nko
Dec 30 2013 1:03pm
Forum: E-Bike General Discussion
Topic: CycleAnalyst V3 setup questions.
Replies: 6
Views: 546

Re: CycleAnalyst V3 setup questions.

The PAS Mode was not set to Torq PAS so I changed that. The SensorType was set to THUN. I zeroed out the values on the Live Display. If you press on the pedals, you see the pressure reading and voltage changing. Still nothing. I saw the Min/Max RPM was set to 10/19 so I changed this to 10/95 and sti...
by g1nko
Dec 27 2013 12:17pm
Forum: E-Bike General Discussion
Topic: CycleAnalyst V3 setup questions.
Replies: 6
Views: 546

CycleAnalyst V3 setup questions.

I have 4 5Ah 6s Zippy packs. I've set these up as 12s2p to get 48v 10Ah out of them. Setting up the Cycle Analyst, it wants to know how many cells are in your battery. I've set this up as 12 as the packs are set up first in parallel to yield two 6s 10Ah packs, then in serial for the 48v. Does anybod...
by g1nko
Dec 05 2013 3:04pm
Forum: Battery Technology
Topic: Building a balance cable for a 10-cell LiFePO battery...
Replies: 9
Views: 714

Re: Building a balance cable for a 10-cell LiFePO battery...

I know it already has a BMS on it. I was going on the theory that with the voltages all over the place like that, there was some issue with the BMS. I wanted to bypass the built in BMS and use a balancer that provided more control over the charge levels. What I really wanted to know was is it possib...
by g1nko
Dec 05 2013 12:34pm
Forum: Battery Technology
Topic: Building a balance cable for a 10-cell LiFePO battery...
Replies: 9
Views: 714

Re: Building a balance cable for a 10-cell LiFePO battery...

There was a thread I started in General Discussion about why the batteries seemed to be dying before they were discharged. The voltages not being LiFePo4 was mentioned in that thread, also. That discussion ran it's course so I started this one in the battery section because it related specifically t...
by g1nko
Dec 05 2013 9:07am
Forum: Battery Technology
Topic: Building a balance cable for a 10-cell LiFePO battery...
Replies: 9
Views: 714

Building a balance cable for a 10-cell LiFePO battery...

I bought a LiFePO battery off eBay. The cells pretty far out of whack. I measured the cells and got these readings: 4.23 4.07 4.07 4.25 4.05 4.03 4.24 4.05 3.97 3.99 I have a Thunder AC6 battery charger/balancer. It can balance up to 6s. I was hoping I could make a balance cable that would balance 5...
by g1nko
Dec 02 2013 6:35pm
Forum: General Discussion
Topic: Need help diagnosing issue with new build.
Replies: 11
Views: 850

Re: Need help diagnosing issue with new build.

Battery looks like this. I can't take the plastic off the individual cells because they're held together with metal straps.
1386027169218.jpg
1386027169218.jpg (86.06 KiB) Viewed 278 times
by g1nko
Dec 02 2013 2:54pm
Forum: General Discussion
Topic: Need help diagnosing issue with new build.
Replies: 11
Views: 850

Re: Need help diagnosing issue with new build.

I bought the battery off eBay (I know, I know, but the seller had good ratings). It was advertised as LiFePO4, so that's what I have to work with. The soldering of the internal connections would have to be significantly improved to be called crappy. The solder shows signs of under-heating in places ...
by g1nko
Nov 30 2013 12:09pm
Forum: General Discussion
Topic: Need help diagnosing issue with new build.
Replies: 11
Views: 850

Re: Need help diagnosing issue with new build.

Took the battery apart. There are 10 cells. Under charge they read as follows:

4.23
4.25
4.24

4.07
4.05
4.05

4.07
4.03
3.97

3.99
by g1nko
Nov 30 2013 11:14am
Forum: General Discussion
Topic: Need help diagnosing issue with new build.
Replies: 11
Views: 850

Need help diagnosing issue with new build.

I finished the build on my bike the other day and took it out for a test ride to get an idea of range and speed. I have a 16 mile r/t commute and figure I'd do 4 out and 4 back for starters to see how I'd be at the half-way point on my commute. Everything was great for about 7.5 miles. Throttle, aut...
by g1nko
Nov 03 2013 7:09pm
Forum: E-Bike General Discussion
Topic: possible bionx modify / upgrade?
Replies: 6
Views: 826

Re: possible bionx modify / upgrade?

The best thing I did to my BionX system was to build a BigXionFlasher interface and turn off the speed limiter. I can zip down the road at 25mph no problem, limited only by the gearing on my bike as it feels like it still has more in it. It's not an "upgrade" per se, but a definite enhancement that ...
by g1nko
Oct 30 2013 6:42am
Forum: E-Bike General Discussion
Topic: Battery has 3 wires but controller has only 2 connectors...
Replies: 6
Views: 648

Re: Battery has 3 wires but controller has only 2 connectors

I split back the shrink wrap on the wire that connects the battery to the controller. There's a single red wire coming out of the plug to which two red wires are soldered. Those are the two that connect to the controller that came with the battery. There's no lock or switch on the controller itself,...
by g1nko
Oct 29 2013 8:04pm
Forum: E-Bike General Discussion
Topic: Battery has 3 wires but controller has only 2 connectors...
Replies: 6
Views: 648

Re: Battery has 3 wires but controller has only 2 connectors

Answered my own question. I put a multimeter on the outside connection where the black/red are connected and it's coming out hot at 40 VDC. I don't know why they split the red coming out to the chinese controller that came with the battery, but clearly I can rewire that and put a two-pole Anderson c...