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by amberwolf
Dec 14, 2017 4:58 am
Forum: Items for Sale - Used
Topic: SYDNEY(AUS)36V A2B 500WATT MOTOR PACKAGE
Replies: 1
Views: 5

Re: SYDNEY(AUS)36V A2B 500WATT MOTOR PACKAGE

It would be easier to read your posts if your caps lock wasn't stuck ON. ;)
by amberwolf
Dec 14, 2017 4:41 am
Forum: E-Bike Technical
Topic: The SB Cruiser: Amberwolf&Dogman's 2WD CargoTrike&DogCarrier
Replies: 629
Views: 56507

Re: The SB Cruiser: Amberwolf&Dogman's 2WD CargoTrike&DogCarrier

So far it's been nice and stiff after the repair. Since it's been colder for longer at night, the battery performance is a little degraded--acceleration from a stop to 20MPh at full charge had been almost down to 3 seconds back in October when a night in the low 70s or high 60s F was cold; now halfw...
by amberwolf
Dec 14, 2017 3:06 am
Forum: General Discussion
Topic: Traveling the continent
Replies: 1
Views: 24

Re: Traveling the continent

I'd build a bigger version of the SB Cruiser trike, https://endless-sphere.com/forums/viewtopic.php?f=2&t=67833 with a expandable "camping" trailer that could carry the dogs, their food and stuff, and my food and stuff, and tools/parts to fix critical things that might break on the road, as well as ...
by amberwolf
Dec 14, 2017 1:11 am
Forum: E-Bike General Discussion
Topic: Freewheel Maintenance
Replies: 18
Views: 271

Re: Freewheel Maintenance

And here in Phoenix, the extremely fine flinty(?) dust tends to grind things away if you lubricate them with anything that gets sticky--I've had better luck with zero lubrication than with just about any dry or wet lube or grease on anything I can't seal against dust.
by amberwolf
Dec 14, 2017 12:59 am
Forum: General Discussion
Topic: Mounting odd hub into truing stand
Replies: 7
Views: 58

Re: Mounting odd hub into truing stand

Ooops-=--I didn't see the D shape; it looks like a round hole on my screen, with a shadow across the top; looking closely at it I can see the shadow is actually the bar of the D. Still, a rod/bolt/etc could still be used, if it's the correct diameter for the hole, and then ground/filed flat for the ...
by amberwolf
Dec 14, 2017 12:46 am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Dashboard suggestions
Replies: 6
Views: 106

Re: Dashboard suggestions

I have learned of this company and password protected bluetooth relay controllers: Unless the relay is embedded in the wiring where a thief couldn't find or access it or the wiring that goes to and from it (so they could just wire around it), it's still possible to hotwire it, if they knew enough e...
by amberwolf
Dec 13, 2017 2:38 pm
Forum: Battery Technology
Topic: Surface resistivity & volume resistivity?
Replies: 10
Views: 74

Re: Surface resistivity & volume resistivity?

Ah--when I clicked the link, a blank page opened, no article, so I didn't see that.

Either way, you still have to know which unit they're actually using, but you could "assume" it's mm since the other unit on the same line is mm. :/
by amberwolf
Dec 13, 2017 2:32 pm
Forum: Battery Technology
Topic: Question about hobby charger amperage fluctuation
Replies: 7
Views: 57

Re: Question about hobby charger amperage fluctuation

Are you running the charger in "balance" mode? Or in "charge" mode? At least in the RC charger I have here, the former does exactly that--maintains balance of the cells while charging. THe latter just bulk charges and stop charge if any cell exceeds the limit for the cell type I've chosen. Also, hav...
by amberwolf
Dec 13, 2017 2:30 pm
Forum: General Discussion
Topic: Mounting odd hub into truing stand
Replies: 7
Views: 58

Re: Mounting odd hub into truing stand

Why not just use a threaded rod with nuts, or a bolt or other metal rod of the correct diameter to emulate the axle?
by amberwolf
Dec 13, 2017 2:20 pm
Forum: Electric Aircraft
Topic: hybrid biz plane
Replies: 3
Views: 50

Re: hybrid biz plane

Not sure which article you meant to point to; when I click the link it comes up with an article about "Dumb And Dumber", a pilot ditching a plane.
by amberwolf
Dec 13, 2017 2:16 pm
Forum: Battery Technology
Topic: Surface resistivity & volume resistivity?
Replies: 10
Views: 74

Re: Surface resistivity & volume resistivity?

You'd need to find out from the manufacturer what unit of measurement they intended to (but did not) put there. Given their other measurement on the same line is in mm, then it's likely the unit is metric, and probably mm, but you'd have to ask. If none of their data sheets use a unit there, then th...
by amberwolf
Dec 13, 2017 1:43 am
Forum: E-Bike Photos & Video
Topic: Solar Muscle Electric Project - possible goal: Suntrip 2018
Replies: 17
Views: 1371

Re: Solar Muscle Electric Project - possible goal: Suntrip 2018

Very exciting to have received the front direct drive hub motor for 60 to 96V! First time ever I might try running a higher voltage motor on a lower battery supply. By rules of the competition you are only allowed a 48V system - building a 14s I hope that counts... Just keep in mind a motor wound f...
by amberwolf
Dec 12, 2017 2:29 pm
Forum: E-Bike Technical
Topic: v-brake front fork mounting points?
Replies: 15
Views: 186

Re: v-brake front fork mounting points?

If you're going to use the brake bosses as pivot points (or have other pivots along the same axis), you have to use smaller diameter motors and in place of the brake arms, or else it won't be on the rim, it'll be on the tire at an angle to the wheel some distance from the fork. Try it out with some ...
by amberwolf
Dec 12, 2017 2:20 pm
Forum: Battery Technology
Topic: Super glue nickel strips to 18650?
Replies: 13
Views: 268

Re: Super glue nickel strips to 18650?

thunderheart wrote:
Dec 12, 2017 6:39 am
I mean with a high melting point soldering wire
I think you mean "low melting point"?
by amberwolf
Dec 12, 2017 3:01 am
Forum: Battery Technology
Topic: BMS problem
Replies: 23
Views: 138

Re: BMS problem

Hook the volt meter to the lowest of the cells, and watch it's voltage when you connect hte load to the BMS. I'd guess that on connection, the capacitance in the load (amplifier) is drawing so much current that the voltage of the cell(s) drops below the BMS's cutoff point, -or- the BMS has a current...
by amberwolf
Dec 12, 2017 2:49 am
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 42
Views: 697

Re: Super capacitors to save battery life?

FWIW, I'd skip the caps; not enough benefit for the extra volume and weight. First, I'd parallel your existing packs so the load on each one is only half of what it would normally see, so it's voltage sag would be that much less as well. This should also get you more total range out of them, because...
by amberwolf
Dec 12, 2017 1:41 am
Forum: E-Bike Technical
Topic: Using the Wangdd22 1500W 30A DC Boost Converter on an ebike
Replies: 87
Views: 2133

Re: Using the Wangdd22 1500W 30A DC Boost Converter on an ebike

( I need to get more back burners ). I keep an old stove between the sheds for that. ;) This boost converter seems like the first time it's been possible to cheaply use lower voltage batteries to run higher voltage controller systems, with sufficient current/wattage to operate them as intended. It'...
by amberwolf
Dec 12, 2017 1:31 am
Forum: General Discussion
Topic: Chinese e-bike
Replies: 5
Views: 133

Re: Chinese e-bike

Does it have a USB power converter in teh battery? Maybe they did like another I've seen and wired it around the BMS to the actual battery terminals, and/or it's defective and causing a drain. Or if it has a battery meter in the battery, and it's always lit up... Maybe teh bike when "off" isn't real...
by amberwolf
Dec 12, 2017 1:09 am
Forum: Battery Technology
Topic: Super glue nickel strips to 18650?
Replies: 13
Views: 268

Re: Super glue nickel strips to 18650?

helpfulguy wrote:
Dec 11, 2017 6:03 pm
I don't want to build a fragile pack and be stranded in the edges of nowhere.
Then I suggest not using nonconductive glues that harden into vibration/flexing-fragile crystals that easily thermal shock. ;)
by amberwolf
Dec 12, 2017 12:22 am
Forum: E-Bike General Discussion
Topic: Freewheel Maintenance
Replies: 18
Views: 271

Re: Freewheel Maintenance

Most freewheels are made with sealed bearings and can’t really be serviced. I haven't seen any in the stuff I've gotten (used) that are sealed bearings--they're all loose balls inside. Both singlespeed and multispeed stuff. Which brand(s) do you use? (so I can keep an eye out for those, as they'd b...
by amberwolf
Dec 12, 2017 12:11 am
Forum: Battery Technology
Topic: Is it possible to overcharge a batterypack due to defective BMS?
Replies: 6
Views: 73

Re: Is it possible to overcharge a batterypack due to defective BMS?

What's strange is that my phone charges over the hailong USB-Port. The last battery I opened up, the USB board is separate and wired directly to the battery + / -, so it doesn't go thru the BMS. (meaning, it's possible for that particular battery to completely discharge due to leakage currents / dr...
by amberwolf
Dec 12, 2017 12:01 am
Forum: Motor Technology
Topic: elf problems with hall sensors
Replies: 1
Views: 29

Re: elf problems with hall sensors

I'd go to http://ebikes.ca and the Troubleshooting page, where they show how to test halls, etc. Then you'll know if it's a problem in the motor, wiring, or controller.

FWIW, it's almost always bad connections.
by amberwolf
Dec 11, 2017 11:57 pm
Forum: E-Vehicles General Discussion
Topic: E-Kart Build I need your Help
Replies: 2
Views: 42

Re: E-Kart Build I need your Help

I'd recommend reading the other Kart threads to see what they did first, so you can avoid any problems / mistakes they experienced. A few of htem are in this list https://endless-sphere.com/forums/search.php?keywords=*kart*&terms=all&author=&sc=1&sf=titleonly&sr=topics&sk=t&sd=d&st=0&ch=300&t=0&subm...
by amberwolf
Dec 11, 2017 11:42 pm
Forum: E-Bike General Discussion
Topic: Series hybrid ebike--who has built one?
Replies: 3
Views: 106

Re: Series hybrid ebike--who has built one?

This search might have some info, but I don't know that there's any completed projects using an ICE. Some use the person as an "engine" to drive the generator, burning food as fuel. https://endless-sphere.com/forums/search.php?keywords=seri*+hybrid*&terms=all&author=&sc=1&sf=titleonly&sr=topics&sk=t...