Search found 4781 matches

by izeman
Mar 18 2019 5:42am
Forum: E-Bike Non-hub Motor Drives
Topic: Albatros enduro bike.
Replies: 62
Views: 5155

Re: Albatros enduro bike.

GREAT. An absolute pleasure to look at!! :bigthumb:
by izeman
Mar 15 2019 12:00pm
Forum: E-Bike Non-hub Motor Drives
Topic: LMX 64 : Freeride Ebike with dual drive and torque sensor
Replies: 154
Views: 9983

Re: LMX 64 : Freeride Ebike with dual drive and torque sensor

If you say 12 frames - are there more to come? Or were only 12 pre-ordered? Is my order one of them? (M**** K****)
by izeman
Mar 14 2019 4:52am
Forum: Stand-up E-scooters and E-skateboards
Topic: 10kW stand-up scooter with air suspension
Replies: 110
Views: 6432

Re: 8kW stand-up scooter with air suspension

fechter wrote:
Mar 11 2019 8:02am
The suspension seems to work amazingly well. Some of those roads are even worse than the ones around here.
After seeing those "streets" i will never complain about our's here. ;)
by izeman
Mar 07 2019 5:15am
Forum: E-Bike Technical
Topic: I have two new identical Q128 motors....one spins slower than other.
Replies: 5
Views: 193

Re: I have two new identical Q128 motors....one spins slower than other.

pullin-gs wrote:
Mar 06 2019 6:01pm
Gearing is same, so difference lies in windings?
For sure. They just sold you wrong labeled product(s).
by izeman
Mar 06 2019 3:01pm
Forum: E-Bike General Discussion
Topic: 16,000mah lipo packs, help me pick from two charging options
Replies: 11
Views: 343

Re: 16,000mah lipo packs, help me pick from two charging options

I mean, honestly: How can a 1000W charger not charge faster than 3x 100W chargers? 1000/300=3.33 So 1000W is about 3 times quicker. Quite simple ;) A 6s pack is 22V nominal. With a 100W charger it can be charged at just below 5A. 16Ah/5A=3h. All rough rounded numbers to make it easier. A 6s pack and...
by izeman
Mar 06 2019 2:39pm
Forum: E-Bike General Discussion
Topic: 16,000mah lipo packs, help me pick from two charging options
Replies: 11
Views: 343

Re: 16,000mah lipo packs, help me pick from two charging options

Haven't we gone through all this in DEEP DETAIL? What information are you missing to do the simple calculations?
by izeman
Mar 05 2019 3:54pm
Forum: General Discussion
Topic: how do those "Pneumatic-Cylinder-Magnetic-Sensor-Reed-Switches" work?
Replies: 10
Views: 345

Re: how do those "Pneumatic-Cylinder-Magnetic-Sensor-Reed-Switches" work?

Installation done. All working fine. I don't really like the magnet installation as it's not really clean, but it should work.

by izeman
Mar 04 2019 4:49am
Forum: General Discussion
Topic: how do those "Pneumatic-Cylinder-Magnetic-Sensor-Reed-Switches" work?
Replies: 10
Views: 345

Re: how do those "Pneumatic-Cylinder-Magnetic-Sensor-Reed-Switches" work?

Don't know what went wrong with my first tests. Those switches work as you expect it. Move a magnet close to them and they switch. Once it's closed, a super tiny LED turns red. Using them as an ebrake switch should work in case you can find a good location for the magnet as the sensing direction is ...
by izeman
Feb 24 2019 11:14am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 947
Views: 60592

Re: bluetooth BMS?

Thanks alestoroz for the translation. Much appreciated.
Is the firmware upgradeable? Do we have newer versions available to flash? Never thought of it yet, but if it got some improvments i'm always willing to try.
by izeman
Feb 22 2019 10:30am
Forum: E-Bike Technical
Topic: How much sag to expect from 36v 20ah Q30 cells and 25 a controller
Replies: 5
Views: 143

Re: How much sag to expect from 36v 20ah Q30 cells and 25 a controller

Thanks,but would it be less than 4 volt sagging with 30q cells? Depends on many factors. Not cell related only. ALL you wiring (and this includes ALL serial connections inside the battery) go into the equation. How the nickel strips are soldered/welded (hopefully) and how thick the nickel is. What ...
by izeman
Feb 22 2019 8:11am
Forum: E-Bike Technical
Topic: How much sag to expect from 36v 20ah Q30 cells and 25 a controller
Replies: 5
Views: 143

Re: How much sag to expect from 36v 20ah Q30 cells and 25 a controller

Not to forget that you have the biggest sag at fully charged batteries. They lose the top voltage very quickly. Building a 20Ah battery with 30Q cells could be a little challenge though 8) Let's assume a 21Ah one, so 7p battery. They should handle 25A quite fine, as it's only 3,5A per cell which is ...
by izeman
Feb 20 2019 2:01am
Forum: Battery Technology
Topic: PURE Nickel strip
Replies: 14
Views: 438

Re: PURE Nickel strip

nkon.nl
by izeman
Feb 17 2019 3:06am
Forum: E-Bike General Discussion
Topic: Do you want enough room to place a battery inside the "triangle"
Replies: 5
Views: 404

Re: Do you want enough room to place a battery inside the "triangle"

Wikipedia : "Czechoslovakia, or Czecho-Slovakia[1] (/ˌtʃɛkoʊsloʊˈvækiə, -kə-, -slə-, -ˈvɑː-/;[2][3] Czech and Slovak: Československo, Česko-Slovensko[4][5]), was a sovereign state in Central Europe that existed from October 1918, when it declared its independence from the Austro-Hungarian Empire, un...
by izeman
Feb 16 2019 4:30am
Forum: E-Bike Technical
Topic: Best solder for shortening cables? (PAS, Motor etc)
Replies: 20
Views: 577

Re: Best solder for shortening cables? (PAS, Motor etc)

This is my favorite soldering iron for up to AWG8. Found it on Ali. Note the big tip.

Image
by izeman
Feb 15 2019 1:36pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4441
Views: 638939

Re: Cycle Analyst V3 preview and first beta release

ebike11 wrote:
Feb 15 2019 10:11am
Anyone have any idea? Thx
No. You can't calibrate afaik, they should come calibrated.
You may want to play with the Cal->VScale value. But note the default to go back to those settings.
by izeman
Feb 15 2019 5:12am
Forum: E-Bike General Discussion
Topic: Do you want enough room to place a battery inside the "triangle"
Replies: 5
Views: 404

Re: Do you want enough room to place a battery inside the "triangle"

Toorbough ULL-Zeveigh wrote:
Feb 14 2019 6:43pm
... czechoslovakian ....
Where've you been the last decades? 8)
by izeman
Feb 15 2019 3:19am
Forum: Battery Technology
Topic: 80% charge in one hour?
Replies: 27
Views: 678

Re: 80% charge in one hour?

john61ct wrote:
Feb 14 2019 5:56pm
TS? Is that the OP?
Yes, Thread Starter. :)
by izeman
Feb 14 2019 3:38pm
Forum: Battery Technology
Topic: 80% charge in one hour?
Replies: 27
Views: 678

Re: 80% charge in one hour?

TBH is have NO idea where this discussion is heading, and the TS hasn't given a clue what this thread is about. I think we should wait for him to reply and tell us what his question really is?!
What do you think?
by izeman
Feb 14 2019 1:36pm
Forum: E-Bike Technical
Topic: Thoughts on these Turnigy Lipos (60v 20ah pack)
Replies: 6
Views: 354

Re: Thoughts on these Turnigy Lipos (60v 20ah pack)

flat tire wrote:
Feb 14 2019 1:02pm
No BMS and human monitoring is better than a crappy BMS.
There's still proof needed for that statement, and there's no clear overall true answer. Too many variables in that equation.
by izeman
Feb 14 2019 8:30am
Forum: Battery Technology
Topic: 80% charge in one hour?
Replies: 27
Views: 678

Re: 80% charge in one hour?

I got graphene rc-lipo that can be charged @4C. So it's full in 15min. But its still not a true graphene battery . it would have much more whr/kg and could be charged in 5 minutes to 90%. Sure, but "Turnigy Graphene" is the product name i was refering to. And those are GREAT batteries. The best i'v...
by izeman
Feb 14 2019 8:22am
Forum: E-Bike Technical
Topic: Thoughts on these Turnigy Lipos (60v 20ah pack)
Replies: 6
Views: 354

Re: Thoughts on these Turnigy Lipos (60v 20ah pack)

So HK has a great price on the 4s 20,000mah blue Turnigy lipos, only $120 a piece. I would like to series connect 4 of them to make a 20ah 60v pack for only $480 dollars. No problem to do so. Involves a bit of wiring, but works. I was set on these packs, but I'm realizing I dont know whats involved...
by izeman
Feb 14 2019 8:09am
Forum: Battery Technology
Topic: 80% charge in one hour?
Replies: 27
Views: 678

Re: 80% charge in one hour?

The only question i see is in the topic :) So what IS your question? If it is possible to charge a battery to 80% in less than an hour. Simple answer: Yes. It just depends on the chemistry if they will survive it or not. I got graphene rc-lipo that can be charged @4C. So it's full in 15min. You writ...
by izeman
Feb 14 2019 7:32am
Forum: E-Vehicles General Discussion
Topic: BMW E "i5" conversion by Matija
Replies: 24
Views: 2692

Re: BMW E "i5" conversion by Matija

As much as i love 3d printing, i would be afraid to see it crack and short out some wires. Did you think about that?
by izeman
Feb 13 2019 10:22am
Forum: Battery Technology
Topic: lipos 3s
Replies: 10
Views: 315

Re: lipos 3s

1s, 2s, 3s, 6s ... Doesn't make any difference. It's all the same cells , only connected together.
It DOES make sense to use packs with the highest cell count, maybe even matching your exact needs as this makes a neater pack and less wiring, giving less ways to connect anything wrong.
by izeman
Feb 13 2019 9:12am
Forum: Battery Technology
Topic: lipos 3s
Replies: 10
Views: 315

Re: lipos 3s

Those are still very open questions. Not very specific. Sure there are issues with lipos. .) They are known to turn into fire works easier than any other widely used chemistry. .) They are mostly soft pouches, so very easy to damage -> fire .) If you don't take care for over/undercharge -> fire Othe...