Search found 889 matches

by dustNbone
May 09 2020 11:43am
Forum: E-Vehicles General Discussion
Topic: How to weatherproof bullet connectors?
Replies: 12
Views: 692

Re: How to weatherproof bullet connectors?

Timelord wrote:
May 08 2020 8:55pm
That's how the wires come. I don't want to spend time and effort cutting them off and re-splicing.
Well, at least you'll know where to start looking when things mysteriously stop working on you in future. That should also save you some time :)
by dustNbone
Mar 26 2020 6:29pm
Forum: Battery Technology
Topic: 90% Battery Charger
Replies: 10
Views: 529

Re: 90% Battery Charger

For a 52V (14S) battery, using a 54.6V (48V) charger will give you about 3.9V per cell, which is probably somewhere in the 80-85% range.
by dustNbone
Mar 24 2020 9:37pm
Forum: E-Bike Non-hub Motor Drives
Topic: bafang bbs02
Replies: 6
Views: 699

Re: bafang bbs02

It appears the "bare motor" does come with a controller. Just no other bits like brake levers, display, crank arms, speed sensor, etc.

You can jump two pins on the display cable input to turn the controller on as noted above, but you will need some of the other parts to have a working unit.
by dustNbone
Dec 03 2019 7:56pm
Forum: E-Vehicles General Discussion
Topic: 4 wheel drive ATV as utility vehicle
Replies: 8
Views: 1618

Re: 4 wheel drive ATV as utility vehicle

I'd consider a slightly larger chassis if you're planning to plow snow. I use my 400cc Honda FourTrax to plow, and it's borderline too light for the job. It also makes substantially more than 4HP, and has a torque converter in addition to a CVT. Our snow does tend to be heavy and slushy here though,...
by dustNbone
Dec 01 2019 11:07pm
Forum: E-Bike Technical
Topic: Why doesn't a li-ion battery take load?
Replies: 24
Views: 2238

Re: Why doesn't a li-ion battery take load?

Yeah I agree, can't think of a single application where it would be safe to deploy those cells. They could be literally anything, would be interesting to chop one open and see what they're actually composed of.
by dustNbone
Dec 01 2019 8:43pm
Forum: E-Bike General Discussion
Topic: Tesla S3X power consumption versus high power electric bike (estimates)... WTF
Replies: 27
Views: 2522

Re: Tesla S3X power consumption versus high power electric bike (estimates)... WTF

Yeah we need to quit hoping/waiting for the technical marvel that's going to allow us to continue travelling and consuming energy the same way we have been for the last number of decades. I know it's not popular, especially in North America, but the painful reality is that if we're actually serious ...
by dustNbone
Nov 28 2019 4:13pm
Forum: E-Bike General Discussion
Topic: Tesla S3X power consumption versus high power electric bike (estimates)... WTF
Replies: 27
Views: 2522

Re: Tesla S3X power consumption versus high power electric bike (estimates)... WTF

I'd bet if you put a conventional ebike on a pair of rollers with no resistance your power consumption would go down dramatically, not that I've tried it. At low speeds it would be pretty significant but once you get above 20-25 mph or so rolling resistance becomes a less significant part of overal...
by dustNbone
Nov 28 2019 2:30pm
Forum: E-Bike General Discussion
Topic: Tesla S3X power consumption versus high power electric bike (estimates)... WTF
Replies: 27
Views: 2522

Re: Tesla S3X power consumption versus high power electric bike (estimates)... WTF

Yep nothing new here. My 500lb motorcycle gets worse mileage on the highway than my Camry. Making a bike aerodynamic is generally not practical, but if you look at velomobiles, despite far greater weight they always outperform unfaired bikes at speed. Nothing with a person sticking out on top of it ...
by dustNbone
Nov 20 2019 3:27am
Forum: General Discussion
Topic: Windows Gaming PC hardware, building, troubleshooting, & benchmarking
Replies: 104
Views: 2641

Re: When Windows 7 is dead in 2020 what OS will you migrate to??

Instability like that is quite often power related, either the power supply itself or the voltage regulators on the motherboard. A good way to rule out software is to use a Linux LiveUSB stick, boot from that and run some stress tests with a totally independent software stack. If it works there you ...
by dustNbone
Nov 17 2019 5:28pm
Forum: Battery Technology
Topic: 48v 25ah Lifepo4 battery state of charge when shipped
Replies: 20
Views: 1655

Re: 48v 25ah Lifepo4 battery state of charge when shipped

Do not let them get too deeply discharged either, stop long before the weakest cell hits 3.2V at high discharge rates, use 3.3V otherwise. That's literally where my LiFePo4 spends almost it's entire discharge cycle. If I stopped when I was hitting 3.2V per cell under load I'd be using like 1/4 of t...
by dustNbone
Nov 17 2019 2:51pm
Forum: Battery Technology
Topic: 48v 25ah Lifepo4 battery state of charge when shipped
Replies: 20
Views: 1655

Re: 48v 25ah Lifepo4 battery state of charge when shipped

49V on a 16S LiFePo4 pack is about 50% charged. You measured about 728Wh going in, but you have to subtract about 15% to compensate for inefficiency of the charger itself, so probably just over 600Wh went in. If you calculate 48V x 25Ah you get 1200Wh total capacity for the battery, so you're right ...
by dustNbone
Nov 16 2019 5:25pm
Forum: E-Bike General Discussion
Topic: Helmet bike mounted cameras
Replies: 20
Views: 2801

Re: Helmet bike mounted cameras

It depends what kind of close call you're talking about. If it's something criminal (eg intentionally trying to harm you) and you file a complaint the police are obligated to investigate it. Once an investigation is underway, they would be quite negligent to not view your video evidence. Someone jus...
by dustNbone
Nov 16 2019 4:04am
Forum: E-Bike General Discussion
Topic: How to remove a stuck pivot bolt
Replies: 34
Views: 3327

Re: How to remove a stuck pivot bolt

Titanium tip bits should be able to cut into it, just don't let it overheat.

If you do want to try pressing it out, gently heating the frame while avoiding heating the pin could go a long way. But I think MadRhino is right, drill it out and use a bolt assembly.
by dustNbone
Nov 15 2019 6:34pm
Forum: General Discussion
Topic: Windows Gaming PC hardware, building, troubleshooting, & benchmarking
Replies: 104
Views: 2641

Re: When Windows 7 is dead in 2020 what OS will you migrate to??

I wouldn't hold my breath on 5Ghz CPUs. We've had 4+Ghz CPUs for like 15 years now, my new Ryzen has a lower clock speed than the (much slower) one it replaced. So, effective IPC continues to climb, but don't look for 5Ghz processors to be a cost effective performace solution. As for Windows 10 dete...
by dustNbone
Nov 14 2019 8:06pm
Forum: Motor Technology
Topic: More than3 phases
Replies: 35
Views: 3004

Re: More than3 phases

And on the analogy of going with "wider" CPU architectures, mass adoption of 64 bit software didn't happen until there was a good reason for it, namely the desire to access more than 4GB or memory. The performance increase either didn't exist or was so minimal that it wasn't worth the bother. It was...
by dustNbone
Nov 12 2019 10:19pm
Forum: General Discussion
Topic: EV outdoor Condo charger installation
Replies: 5
Views: 905

Re: EV outdoor Condo charger installation

You can do the work yourself but it'll need to be inspected by someone certified before you bury it
by dustNbone
Nov 08 2019 2:15pm
Forum: E-Bike General Discussion
Topic: Alternator to Electric Motor - Pulley Removal
Replies: 9
Views: 761

Re: Alternator to Electric Motor - Pulley Removal

Oh yeah, gotta have one. I bought a big mean Makita one from a garage sale pretty cheap about 20 years ago, having no idea what I'd ever use it for. A few years later I was in a fight with an exhaust manifold bolt, bleeding a little and not winning at all. Then I remembered the big blue beast in the...
by dustNbone
Nov 08 2019 2:08pm
Forum: E-Bike General Discussion
Topic: Getting amazing range with BBSHD or faulty display?
Replies: 16
Views: 936

Re: Getting amazing range with BBSHD or faulty display?

It's really nice to have at least a proper voltage readout. Once you use it for a while you can get a really good feel for how much you have left in the tank just by that, much better than relying on a few bars. I like the looks of the eggrider, if it was available at the time I probably would have ...
by dustNbone
Nov 08 2019 12:07am
Forum: EV Business World
Topic: Toyota will use Tokyo Olympics to debut solid-state battery electric vehicle
Replies: 13
Views: 1708

Re: Toyota will use Tokyo Olympics to debut solid-state battery electric vehicle

cricketo wrote:
Nov 07 2019 10:04am
Yeah, before they're able to produce anything in numbers, they will be made obsolete and irrelevant by... Tesla.
Haha yeah you're right what does Toyota know about making practical, affordable cars by the millions?

RIP Tesla.
by dustNbone
Nov 07 2019 11:40pm
Forum: EV Business World
Topic: Tesla Cybertruck
Replies: 48
Views: 5489

Re: Tesla Cybertruck

Yeah if I had those skills I'd probably use them on a bank or something. But banks don't seem to get hacked much, I guess digital security is a real thing.
by dustNbone
Nov 07 2019 11:35pm
Forum: E-Bike General Discussion
Topic: Getting amazing range with BBSHD or faulty display?
Replies: 16
Views: 936

Re: Getting amazing range with BBSHD or faulty display?

48V (13S) pack fully charged is 54.6V
52V (14S) pack fully charged is 58.8V
by dustNbone
Nov 06 2019 10:04pm
Forum: E-Bike General Discussion
Topic: Getting amazing range with BBSHD or faulty display?
Replies: 16
Views: 936

Re: Getting amazing range with BBSHD or faulty display?

It's really hard to say without at least an actual voltage reading, and ideally a Wh reading. Doesn't the CA supply this? I guess you'd need to have a shunt installed. That said, you have a nearly 1500Wh pack, and with reasonable pedalling I get between 15-20Wh per mile on my BBS02. So you're not to...
by dustNbone
Nov 06 2019 1:25am
Forum: E-Bike General Discussion
Topic: Alternator to Electric Motor - Pulley Removal
Replies: 9
Views: 761

Re: Alternator to Electric Motor - Pulley Removal

Impact driver of some sort is really your friend for a job like that. Hold the pulley with a strap wrench, give it a hit with the impact gun and it'll spin out of there. You can even use a manual impact driver like this: https://www.amazon.ca/TEKTON-2905-8-Inch-Manual-7-Piece/dp/B000NPPATS A little ...
by dustNbone
Nov 05 2019 8:37pm
Forum: E-Bike General Discussion
Topic: Would ballast disconnects be workable reusable connector?
Replies: 11
Views: 879

Re: Would ballast disconnects be workable reusable connector?

They're rated to 6A, aside from that I suppose they'd be ok. How well they stand up to repeated connections and potential sparking from being connected under load is for you to find out :) EDIT: I reread your post and noticed that you seem to want to use them for the main power connections from batt...
by dustNbone
Nov 05 2019 8:21pm
Forum: General Discussion
Topic: Bicycle Speakers
Replies: 23
Views: 2187

Re: Bicycle Speakers

So how is your hearing bro? A very small part? I still call b#!!s#!%. Sorry, but that is how I see it. It's orders of magnitude less information. If you refine it down to just useful information it's more orders of magnitude less. So I ask you this. Have you ever pulled up to an intersection, looke...