Search found 307 matches

by zEEz
Oct 19 2018 6:15am
Forum: E-Bike Reviews & Testing
Topic: InBike URBAN, a cheap italian ebike (made in China)
Replies: 9
Views: 2269

Re: InBike URBAN, a cheap italian ebike (made in China)

I made another experiment.... a stealth battery pack.... 8) I used 2 packs of Turnigy Lipo 2.2Ah 40-50C... 1 for the forward trip and 1 to come back home... to test... They are 22.2V 6s1p packs... I did in total 21Km at an average of 20Kmh... discharging both packs to 3.73V per cell... It looks like...
by zEEz
Oct 17 2018 10:59am
Forum: Battery Technology
Topic: Nissan Leaf Cells Test Data
Replies: 383
Views: 73449

Re: Nissan Leaf Cells Test Data

Is it just one can out of several that's showing leakage between can and terminal? Unrelated, but I'd put some insulation around the barrels of those crimp terminals to stop them touching the casing if bent! I was answering to marcexec ... He has some leakage, mine seems ok... I didn't put insulati...
by zEEz
Oct 13 2018 4:02pm
Forum: Battery Technology
Topic: Ooops, I overcharged it again ...
Replies: 13
Views: 1313

Re: Ooops, I overcharged it again ...

Forgot to report back about the HobbyKing turnigy nanotech 750mAh 1s1p cells I bought in 2014....
In less than 20 cycles and in no more than 16 months of use they all (5 exemplars) puffed...
They are of no use now, but were exceptional in performance when they were new.

Have fun!
by zEEz
Oct 13 2018 5:06am
Forum: Battery Technology
Topic: Nissan Leaf Cells Test Data
Replies: 383
Views: 73449

Re: Nissan Leaf Cells Test Data

Image

This is a picture of one of the 2 battery packs created filling Decathlon side bike packs with Nissan 2012 modules.
For an e-bike that is having a range of 200km at 35kmh speed.

Have fun!
by zEEz
Oct 13 2018 3:59am
Forum: Battery Technology
Topic: Nissan Leaf Cells Test Data
Replies: 383
Views: 73449

Re: Nissan Leaf Cells not suitable for outdoor use?

Now I can measure from various points and have the same thing all over the place, nearly every 2nd connector register 0.1-0.3V briefly, even on the 4 modules that are now completely removed from the bike. Double-checked with a 2nd multimeter as I thought I'm going crazy. I am suspecting that the ex...
by zEEz
Oct 12 2018 12:52pm
Forum: E-Bike Reviews & Testing
Topic: InBike URBAN, a cheap italian ebike (made in China)
Replies: 9
Views: 2269

Re: InBike URBAN, a cheap italian ebike (made in China)

Hmmm... "60 percent or less"? Sorta interested that the cells seem to have degraded at a "faster rate" than I might have thought. "Shelf life" kicking in? Tks Hi, LockH! Yes, I'm puzzled too... The battery is made of 7s5p 18650 LiMn cells. They are something around 2200mAh each to get to the advert...
by zEEz
Oct 12 2018 11:06am
Forum: E-Bike Reviews & Testing
Topic: InBike URBAN, a cheap italian ebike (made in China)
Replies: 9
Views: 2269

Re: InBike URBAN, a cheap italian ebike (made in China)

This is a picture of the 2 battery packs on the back of the bike, from outside... http://i67.tinypic.com/jqmcyd.jpg ...and another picture of one pack content... http://i68.tinypic.com/1jw3o0.jpg ...usable energy is around 1.5kWh, top up time from empty is 6-7 hours... ...projected reach per charge ...
by zEEz
Oct 12 2018 5:30am
Forum: E-Bike Reviews & Testing
Topic: InBike URBAN, a cheap italian ebike (made in China)
Replies: 9
Views: 2269

Re: InBike URBAN, a cheap italian ebike (made in China)

http://i68.tinypic.com/rjmus5.jpg This is the result ... :shock: I made a custom pack, using 4x Nissan Leaf 2012 battery modules (60Ah, 8.4V each). I distributed them in 2x lateral waterproof Cases from Decathlon. I bulk charge them. But still balancing the single cells, charging them also individu...
by zEEz
Oct 12 2018 5:17am
Forum: E-Bike Reviews & Testing
Topic: InBike URBAN, a cheap italian ebike (made in China)
Replies: 9
Views: 2269

Re: InBike URBAN, a cheap italian ebike (made in China)

I'm back! :mrgreen:
At 4000 Km on the clock, 150 charge cycles and 4 years of use ...
the battery pack is holding 60% or less of the original capacity... :cry:
Since the e-bike payed fully for itself due to the gas savings, I needed to do something with it ... :twisted:

...to be continued
by zEEz
Sep 26 2014 2:36pm
Forum: Battery Technology
Topic: Ooops, I overcharged it again ...
Replies: 13
Views: 1313

Re: Ooops, I overcharged it again ...

yeah, sometime it helps :roll:
those nanotech are really top stuff.

have fun!
by zEEz
Sep 23 2014 3:55pm
Forum: Battery Technology
Topic: Ooops, I overcharged it again ...
Replies: 13
Views: 1313

Re: Ooops, I overcharged it again ...

Overcharged or Turbocharged? :P I'm so happy I damaged that Lipo, otherwise I would never come to know how good those Nanotech are! :mrgreen: They turned some flimsy performance devices in amazing fun with incredible flight time with the added bonus or having a normal temperature at the end of the f...
by zEEz
Sep 15 2014 4:16pm
Forum: General Discussion
Topic: MS Windows-7 screwed me, Linux/Ubuntu discussion
Replies: 71
Views: 4260

Re: Microsoft just updated, and I lost a long thoughtful rep

I am close to being persuaded to try out the Linux version called "Mint", unless someone stops me between now and the used laptop purchase. Do it! it is very good for general use, but if you want to stay cool and happy, select to download not the last istall version but the last extended support re...
by zEEz
Sep 14 2014 9:28am
Forum: Motor Technology
Topic: Lyen Controller Problem!
Replies: 16
Views: 1548

Re: Lyen Controller Problem!

you could energize with the controller an old scavaged floppy disk motor, just to be sure the controller is programmed correctly. That motors have a fine aligned set of halls, that is for sure. You need just to desolder the original driver chip and provide extension cables for halls and phases. have...
by zEEz
Sep 12 2014 2:14pm
Forum: Motor Technology
Topic: This motor looks crazy powerfull.. and i got one..
Replies: 27
Views: 4277

Re: This motor looks crazy powerfull.. and i got one..

ah, cool, so in the end it worked out, even at 100 volts :!:
I see an enormous multiplication of transport means being electrified :mrgreen: that is great :!:

have fun!
by zEEz
Sep 12 2014 11:19am
Forum: Motor Technology
Topic: This motor looks crazy powerfull.. and i got one..
Replies: 27
Views: 4277

Re: This motor looks crazy powerfull.. and i got one..

That version (100kv) is intended for 48v, may 60v max, because 6000 rpm is max for that motor. yeah, but on the first post steveo wrote he used a 100v pack ... this is probably also the reason of the unusually high no load current. If I remember right LFP used one of those in the early deathbike, a...
by zEEz
Sep 12 2014 10:51am
Forum: Battery Technology
Topic: Ooops, I overcharged it again ...
Replies: 13
Views: 1313

Re: Ooops, I overcharged it again ...

you should not discharge your lipo packs through the discharge function internal to the balancing charger. you should use an external shunt to absorb the power because the internal shunt is not able to handle the power and they burn up. don't worry, I plan to discharge with less than 2 watts ... as...
by zEEz
Sep 12 2014 6:34am
Forum: Battery Technology
Topic: Ooops, I overcharged it again ...
Replies: 13
Views: 1313

Re: Ooops, I overcharged it again ...

i had a lot of early failures of the nanotech pouches. the 8Ah 25-50C version but it may be because of my assembly practice since the failures all seem to be the pouch where i soldered to the negative electrode. ok, thanx, I will check! Still should not be a problem since I put on the equipment exa...
by zEEz
Sep 11 2014 4:23pm
Forum: Motor Technology
Topic: Conclusive proof gearboxes are awesome.
Replies: 790
Views: 78923

Re: Conclusive proof gearboxes are awesome.

looks like nobody needs a gearbox anymore, well , pity, I could sell one used :mrgreen: In the end I foresee the gearbox remaining with its ICE and at a certain point it will be time to restorate the entire bike that in the meantime became an hystorical piece that nevertheless was and could again re...
by zEEz
Sep 11 2014 3:55pm
Forum: Battery Technology
Topic: Ooops, I overcharged it again ...
Replies: 13
Views: 1313

Re: Ooops, I overcharged it again ...

ya, just mere 15 minutes made the internal resistance to rocket up to the sky! :shock: never to bulk charge without HVC cell level cutoff, in my future plans :mrgreen: will get two of those http://i.ebayimg.com/00/s/MTIwMFgxNjAw/$(KGrHqNHJCcE7y+!J0uMBPDlUO(O7g~~60_35.JPG to have more funtime and hop...
by zEEz
Sep 10 2014 3:42pm
Forum: Battery Technology
Topic: Ooops, I overcharged it again ...
Replies: 13
Views: 1313

Ooops, I overcharged it again ...

First of all, don`t worry too much, sice I`m talking about a single Lipo cell, only 350mAh, but 15C rated. Long story short, I left it charging at 1C, I came back after 80 minutes, expecting to find the green light and a ready to fly cell, but it was still charging, I quickly took it out, checked th...
by zEEz
Sep 05 2014 2:55pm
Forum: Motor Technology
Topic: Conclusive proof gearboxes are awesome.
Replies: 790
Views: 78923

Re: Conclusive proof gearboxes are awesome.

interesting! so to summarize a zero S is more or less power limited in its top speed and a gear could not help to achieve better top, just wasted power. If I want a 'busa style rocket to do 300 kmph I need to increase the diameter of the motor and its power to accomodate required top speed power. st...
by zEEz
Sep 04 2014 5:17am
Forum: Motor Technology
Topic: Conclusive proof gearboxes are awesome.
Replies: 790
Views: 78923

Re: Conclusive proof gearboxes are awesome.

e .. tesla stopped using the 2 speed gb due to reliability problems and as it only gave a extra 30-40mph on top of what was already a very fast car nobody seemed to mind. A race car that is being developed in the uk produces 4000Nm of torque and is capable of over 200mph from a direct drive system ...
by zEEz
Sep 02 2014 5:15pm
Forum: Battery Technology
Topic: Noob Questions
Replies: 18
Views: 857

Re: Noob Questions

asifpow wrote:Haha okay I'll definitely take your word for it.

Any advice on the other topics?
If you stay below 45A , 1piece of that bms will suffice. charger could be ok
motor kit is possibly requiring a lot of effort to be mounted properly. why not an hub?
you need proper battery ...

have fun!
by zEEz
Sep 02 2014 5:04pm
Forum: Motor Technology
Topic: Conclusive proof gearboxes are awesome.
Replies: 790
Views: 78923

Re: Conclusive proof gearboxes are awesome.

We all dream of multi-speed gearboxes at first, but that's quickly forgotten as soon as you get on a bike with a properly sized motor. unfortunately I need to revv up endlessy at the red light, to feel happy :twisted: perhaps a magnetic clutch would suffice :mrgreen: Joke apart, most of the people ...
by zEEz
Sep 02 2014 4:36pm
Forum: Battery Technology
Topic: Noob Questions
Replies: 18
Views: 857

Re: Noob Questions

better to stay away from Ultrafire, except to operate flashlights and similar ....
they are mixed rejects, recycled , improperly stored, plain insanely old crap.
When asked for current, often they vent ...
I bought few, did some test, ouch :mrgreen:

have fun!