Search found 12871 matches

by neptronix
Nov 30 2019 1:34am
Forum: E-Bike Technical
Topic: Bafang 20” motor in a 24” rim
Replies: 13
Views: 438

Re: Bafang 20” motor in a 24” rim

^-- bingo
by neptronix
Nov 29 2019 4:48pm
Forum: Forum Rules and Features
Topic: Forum going down for maintenance today
Replies: 13
Views: 1413

Re: Forum going down for maintenance today

Sorry about that, i think i forgot a code patch in the process. Will get to that when i get a minute.
by neptronix
Nov 21 2019 6:52pm
Forum: E-Bike Non-hub Motor Drives
Topic: Internally geared BLDC motor
Replies: 17
Views: 1005

Re: Internally geared BLDC motor

My big concern is that it has an open case and will need to be sealed to live a long life in the elements.
And where's the dyno sheet?
Better be a damned good motorat that kind of price.
It would be sweet to have a 1lb motor and thus a 3lbs mid drive for sure..
by neptronix
Nov 21 2019 1:12am
Forum: E-Bike Non-hub Motor Drives
Topic: Internally geared BLDC motor
Replies: 17
Views: 1005

Re: Internally geared BLDC motor

$400 for a 500w rated air cooled motor... OK, it's only 1lb, but that's asking quite a lot.

Personally i'd rather get a little dual reduction geared hub instead, for a third of the price.. i can stand another 5lbs!
by neptronix
Nov 19 2019 3:57pm
Forum: Battery Technology
Topic: Is a 24s battery dangerous?
Replies: 24
Views: 908

Re: Is a 24s battery dangerous?

That's it I'm removing all 8,256 18650 cells and the 13 balance boards from my Tesla and replacing them with LiPo so I can monitor the balancing myself and be much safer from now on. These exploding BMS have got to be stopped. I'd guess that the BMS in your Tesla is a lot higher quality than what's...
by neptronix
Nov 18 2019 4:41pm
Forum: Battery Technology
Topic: Is a 24s battery dangerous?
Replies: 24
Views: 908

Re: Is a 24s battery dangerous?

A precharge connector/system is an absolute must at that voltage. Otherwise you will destroy every battery connection you build. You'll also want a controller with 4115 FETs. 100v will blow 4110 FETs. Of course high voltage is dangerous. Finding a BMS for that voltage is dangerous. I prefer high amp...
by neptronix
Nov 16 2019 4:39pm
Forum: Motor Technology
Topic: More than3 phases
Replies: 9
Views: 751

Re: More than3 phases

where is this imaginary graaf that only you can see Oh Grate Gazoo?? i've searched b4 & again just now did an exhaustive sphere-search for 'dyno, falco & 5-phase' with no pix. also come clean with full disclosure that you've never ridden much less owned a multiphase. Falco wouldn't provide me with ...
by neptronix
Nov 15 2019 4:11pm
Forum: General Discussion
Topic: Dr Ekberg HIIT exercise helps Insulin Resistance p 16, Best HIIT workout so far! 16
Replies: 399
Views: 25438

Re: increasing pedal range by eating healthy food-p11, Studies show Insulin Resistance reversed ONLY with weight loss!p

Nep i actually agree with you on statins :shock: :lol: Common ground is nice :thumb: And what you said about chol. EXCEPT your conclusion that low is bad. I suppose 1 in a million could have a problem in theory, but i've not read anything like that. LOW like under 100, indicates the person is in fa...
by neptronix
Nov 14 2019 7:48pm
Forum: Motor Technology
Topic: More than3 phases
Replies: 9
Views: 751

Re: More than3 phases

Yeah people have claimed that 5 phases is better for eons but i haven't ever seen a dyno graph that proves it. I've seen some that prove otherwise though. I remember falco did this with a hub motor. And the thing performed less well than a crappy crystalyte of the same size. The real downside is tha...
by neptronix
Nov 14 2019 6:33pm
Forum: General Discussion
Topic: Dr Ekberg HIIT exercise helps Insulin Resistance p 16, Best HIIT workout so far! 16
Replies: 399
Views: 25438

Re: increasing pedal range by eating healthy food-p11, Studies show Insulin Resistance reversed ONLY with weight loss!p

Someone needs statins like a hole in the head. Statins have caused more problems than they solve. And they don't solve the original issue either. Cholesterol is there to repair your body. If it is too low, that repair stops happening. All sorts of deadly symptoms will emerge. Your body will generate...
by neptronix
Nov 14 2019 5:31pm
Forum: General Discussion
Topic: Dr Ekberg HIIT exercise helps Insulin Resistance p 16, Best HIIT workout so far! 16
Replies: 399
Views: 25438

Re: increasing pedal range by eating healthy food-p11, Studies show Insulin Resistance reversed ONLY with weight loss!p

There's a lot of data showing that blood cholesterol doesn't matter. It's a way to pitch statins, which are horrifyingly bad drugs that statistically don't do shit to prevent heart disease or heart attacks. Too low of cholesterol ( <100 ) or extremely high cholesterol ( >300 ) are the only dangerous...
by neptronix
Nov 14 2019 4:59pm
Forum: Battery Technology
Topic: Acceptable Battery Sag
Replies: 24
Views: 1309

Re: Acceptable Battery Sag

That's a lot of sag for a 36v battery pack. About 8% of your energy is being lost to heat.
Colder temperatures make this worse.

Might be time to get a heartier battery. Or draw less current ( IE limit your amps and top speed down ) to stretch out the life of the current battery.
by neptronix
Nov 14 2019 4:48pm
Forum: Polls & Surveys
Topic: When Windows 7 is dead in 2020 what OS will you migrate to??
Replies: 69
Views: 5677

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

BeOS lives on as haiku. AFAIK haiku is cool as shit. I wish virtualbox was available for it.. if so, i'd be running it as my host OS :bigthumb:

https://www.haiku-os.org/

Image
by neptronix
Nov 14 2019 4:40pm
Forum: General Discussion
Topic: Dr Ekberg HIIT exercise helps Insulin Resistance p 16, Best HIIT workout so far! 16
Replies: 399
Views: 25438

Re: increasing pedal range by eating healthy food-p11, Studies show Insulin Resistance reversed ONLY with weight loss!p

Triglycerides can be elevated when you're eating the 'mouse diet', IE a certain mixture of fat and carbs actually. Happens to SAD / western pattern diet eaters all the time. If there's significant insulin resistance then you can also see elevated blood sugars at the same time. You can optimize your ...
by neptronix
Nov 14 2019 3:43pm
Forum: E-Bike General Discussion
Topic: Why not comfort bikes?
Replies: 87
Views: 3737

Re: Why not comfort bikes?

Yeah there's a lot of variability in our physical needs and riding conditions. So of course there's never much agreement on here. :) if you have flattish roads and a crappy road is only a random occurrence, I get why suspension would be an afterthought. I did live in an area like that and had an ebi...
by neptronix
Nov 14 2019 10:41am
Forum: E-Bike Technical
Topic: 3-speed switch
Replies: 7
Views: 406

Re: 3-speed switch

I have a Powervelocity controller that you can program the settings for the 3 speeds. Current limit and speed limit are programmable as is the flux weakening. Similar to my array of oldschool infineon clones. I really like having that 3 speed switch. More advanced controllers that use Sine or FOC t...
by neptronix
Nov 14 2019 10:31am
Forum: Motor Technology
Topic: More than3 phases
Replies: 9
Views: 751

Re: More than3 phases

Dyno graphs show that you don't get a benefit from more phases. The real downside is that you have to design a custom controller around 4,5,6,7 phases.. All the highest efficiency, highest power density, and most expensive motor designs use 3 phases. Take note! More or less poles can be used to opti...
by neptronix
Nov 14 2019 10:10am
Forum: E-Bike General Discussion
Topic: Why not comfort bikes?
Replies: 87
Views: 3737

Re: Why not comfort bikes?

I think suspension is no substitute for good tires and appropriate speeds. It makes a bike capable of high speed, but at the cost of making it ride lousy all the time. I have never experienced anything other than a massively improved ride quality over a hardtail from a properly adjusted shock. I'm ...
by neptronix
Nov 14 2019 9:51am
Forum: E-Bike General Discussion
Topic: Why not comfort bikes?
Replies: 87
Views: 3737

Re: Why not comfort bikes?

Why do you go so fast? Do the local authorities make you register your bike? There is no way to legally register my bike but local authorities always turn a blind eye. I am always pedaling and it does not register in their mind that i'm doing anything other than riding a bike. I also design my ebik...
by neptronix
Nov 14 2019 1:12am
Forum: E-Bike General Discussion
Topic: Why not comfort bikes?
Replies: 87
Views: 3737

Re: Why not comfort bikes?

i only build bikes with 22" wheels or smaller these days Well for mainly dirt / gravel desert & forestry tracks I just can't see going that small. Fattie tires is suspension, so maybe 24" rim, gets to what circumference? 22" is a typical motorcycle wheel size that translates to 18" in motorcycle ti...
by neptronix
Nov 13 2019 10:45pm
Forum: E-Bike Technical
Topic: Controllers compatible with Mac 10t @ 48V
Replies: 11
Views: 649

Re: Controllers compatible with Mac 10t @ 48V

Em3ev controllers ( infoneon clones ) can take a 3 speed switch. My favorite still.

Mind you, they are square drive, and thus will be noisy.
by neptronix
Nov 13 2019 4:52pm
Forum: E-Bike General Discussion
Topic: Why not comfort bikes?
Replies: 87
Views: 3737

Re: Why not comfort bikes?

I think the ability to derate current based on overtemp is critical. That's why i use the ebikes.ca sim to figure this out. Any powertrain i design has to sustain 7% grades for quite a few miles. They are always oversized and thus run in a high efficiency spot in the powerband. Oversize it too much...
by neptronix
Nov 13 2019 1:29pm
Forum: E-Bike General Discussion
Topic: Why not comfort bikes?
Replies: 87
Views: 3737

Re: Why not comfort bikes?

To reply to both of you.. Yeah, a DD motor can take the abuse for longer periods of time, for sure. It also responds to a small wheel better. The best geared hub hits something like an 84% peak efficiency whereas a DD hub of the same continuous wattage can be up to 90%. Add the 6% efficiency differe...
by neptronix
Nov 13 2019 9:18am
Forum: E-Bike General Discussion
Topic: BattMeter - just another wattmeter
Replies: 6
Views: 529

Re: BattMeter - just another wattmeter

Very cool. I'd recommend making it as compact as possible, if you're going to compete with the cycle analyst, which is kinda bulky in itself. Maybe for v2? We need smaller displays that don't scream 'i'm an ebike!!'. The eggrider is amazing in this regard, yet it is limited, can't adapt to a CA DP c...
by neptronix
Nov 13 2019 9:15am
Forum: General Discussion
Topic: The keto thread
Replies: 105
Views: 6914

Re: The keto thread

Shirataki noodles aren't too bad. They're another one of those not so digestible keto substitute foods that are OK for bridging the gap between prior eating habits and your new reality.

They're allright when drenched in the right sauce :thumb: