Search found 6656 matches

by Chalo
Jan 21 2019 10:26am
Forum: Motor Technology
Topic: Motor with ~10.000 rpm and >100kW peak?
Replies: 2
Views: 95

Re: Motor with ~10.000 rpm and >100kW peak?

Yes, more data or more context would be good. But here's one that would probably reach at least 10k RPM before it comes undone, if you fail to apply an appropriate load: https://www.ebay.com/p/GE-General-Electric-5by445a18g01-150-HP-DC-Electric-Motor-Shunt-Wound-500vdc/18005726680 https://i.ebayimg....
by Chalo
Jan 20 2019 5:40pm
Forum: General Discussion
Topic: Why too much iron from meat is not good!( page 6)
Replies: 125
Views: 4954

Re: For a snack i ate an ear of corn, instead of corn chips( page 5)

Have to get calories somehow, and chips and chocolate have stopped my weight loss, which was alarming to me, when i dropped below 120# for a while. Now holding at 122. Do need some calorie dense food, be it sugar or oil; many veg just don't have enough calories. :shock: It sounds like whatever work...
by Chalo
Jan 20 2019 4:36pm
Forum: General Discussion
Topic: Why too much iron from meat is not good!( page 6)
Replies: 125
Views: 4954

Re: For a snack i ate an ear of corn, instead of corn chips( page 5)

Sweet corn sold by the ear is much higher in sugar than the ripe dry corn used in chips. The stuff in chips is also nixtamalized, which makes some of its essential nutrients much more readily absorbable. Mesoamericans lived on a diet of predominantly corn, but it was nixtamalization that made it pos...
by Chalo
Jan 19 2019 11:43am
Forum: Motor Technology
Topic: Possible to change low voltage protection? How?
Replies: 3
Views: 51

Re: Possible to change low voltage protection? How?

There should be an voltage divider inside by modifying that you should be able to use lower voltages. Ill post a video if I can find again from the youtube. I didn't think to check YouTube for that, but thanks to your hint, I was able to find this video: 3f6nKJp182E It runs too fast for me to make ...
by Chalo
Jan 19 2019 11:11am
Forum: Motor Technology
Topic: Possible to change low voltage protection? How?
Replies: 3
Views: 51

Possible to change low voltage protection? How?

I have a battery of 104V nominal, 117.6V fully charged. I've been able to use it as a portable substitute for household power, but so far my attempts to use it as a light EV battery have hung up on the controller. I've wanted to find one that can tolerate the high voltage, but not demand more power ...
by Chalo
Jan 18 2019 9:31pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Cruiser Motorcycle conversation components
Replies: 12
Views: 320

Re: Cruiser Motorcycle conversation components

I don't want a hyper driven torque rocket to help shorten my life span, just a cruiser with above average acceleration that will reach about 90mph max. Budget is max of $3.5k USD for everything. Battery 16s 45ah modules. At least 2 in parallel. [...] BMS 300A smart BMS from Ali. 59.2V nominal, time...
by Chalo
Jan 18 2019 9:13pm
Forum: E-Vehicles General Discussion
Topic: ebike question
Replies: 2
Views: 110

Re: ebike question

Hi.. I bought a voltbike marine a few years ago and like it.. however I'm looking for something with a bigger battery for more range.. You'll get a lot more range from the same amount of battery energy if you ride a bike with full sized wheels and reasonably high pressure tires. I'm not saying don'...
by Chalo
Jan 18 2019 2:17am
Forum: E-Bike General Discussion
Topic: Crystalyte/LiFePO4 preasembled ebike available anywhere?
Replies: 13
Views: 220

Re: Crystalyte/LiFePO4 preasembled ebike available anywhere?

Last I checked, Crystalyte was a small, family-owned business that specialized in DIY motors and kits for hobbyists in Western countries. If that's still true, you won't find any complete e-bikes with Crystalyte motors, because that's not what they do.
by Chalo
Jan 17 2019 11:00pm
Forum: E-Bike Technical
Topic: bike went full throttle riding in the wet
Replies: 41
Views: 3711

Re: bike went full throttle riding in the wet

And as noted previously, vaseline (or battery terminal grease) filling the active electronics area / wiring terminals / connector housings will also prevent water from getting onto the parts you don't want it to. (unless you have temperatures high enough to liquefy it and let it "flow" out). Vaseli...
by Chalo
Jan 16 2019 3:35pm
Forum: E-Bike General Discussion
Topic: Is pedaless ebikes illegal in NYC?
Replies: 6
Views: 232

Re: Is pedaless ebikes illegal in NYC?

flat tire wrote:
Jan 16 2019 3:25pm
My thoughts are that you should probably use conventional english in your thread titles or many people will discount interacting with you in any positive way out of hand.
NYC contains a lot of non-native English speakers.
by Chalo
Jan 16 2019 11:24am
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1399
Views: 163359

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Please get yourself some more experience building electric vehicles before chipping in on matters like this. You've been here for 10 years and should, at a minimum, know more than me about the reality of how all the components are rated VS what the reality is. I've been building EVs since before th...
by Chalo
Jan 16 2019 11:05am
Forum: E-Bike Technical
Topic: BBS02 not working no more
Replies: 16
Views: 454

Re: BBS02 not working no more

That is strange. Seems like a failure to communicate between controller and display that's random. Possibly noise getting into the data lines. After that much trouble, I would probably take a big hammer to it. The BBSHD has a much better track record. You don't think it has anything to do with over...
by Chalo
Jan 16 2019 10:45am
Forum: E-Bike General Discussion
Topic: Is pedaless ebikes illegal in NYC?
Replies: 6
Views: 232

Re: Is pedaless ebikes illegal in NYC?

If it's something that conforms to the definition of a moped, then you can register it as one. New York State doesn't require a title for a moped. https://dmv.ny.gov/registration/register-moped If it's limited to 20mph, then all you need to do is register it-- no insurance, inspection, helmet, or mo...
by Chalo
Jan 16 2019 10:43am
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1399
Views: 163359

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

The purpose of any motor is to be used WITHIN SPEC. Is this too hard for you? It's like y'all think engineers are there for decoration. This would be a valid statement if China had unilaterally decided to rate their motors through some method other than 'do a dyno in whatever wheel size and voltage...
by Chalo
Jan 16 2019 12:57am
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1399
Views: 163359

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Make sure to lace all the spokes outside the hub flanges Would that also be recommended for wider-flanged hubs (like the MXUS 450x) in smaller rims (20" bicycle / 16" motorcycle)? No-- for smaller diameter wheels there is enough bracing angle when they're laced alternating in/out or even all on the...
by Chalo
Jan 15 2019 9:11pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1399
Views: 163359

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

If you're going to build a 1500w+ motor wheel, i'd consider 14 gauge butted sapim spokes ( which flange out to 13 gauge diameter for extra strength ) to be a bare minimum. May be inadequate for 2kw+ or large wheels like 29ers. A lot of people have had issues running standard bike spokes on powerful...
by Chalo
Jan 15 2019 8:45pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1399
Views: 163359

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

I have a 26 inch sun ryhno lite with a few small cracks in the rim. As the hub motor was already giving me some issues Id figure I would just get a new motor soon. How are the rims they build any better than ebay kits or should I just have my bike shop build a will again ? For best results, you wan...
by Chalo
Jan 15 2019 5:40pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3226
Views: 109574

Re: Wind and Solar vs Coal, Gasoline, Nuclear

There is a mechanism to insert the control rods, so there is a mechanism that can fail to insert the control rods. The AP1000, like many reactors, has an active control that keeps the control rods retracted. If the system fails or loses power, the rods fall into the reactor. Are you saying that mac...
by Chalo
Jan 15 2019 4:40pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3226
Views: 109574

Re: Wind and Solar vs Coal, Gasoline, Nuclear

there is no radioactive water steam to explode. There is superheated pressurized water, so there is the risk of explosion. There is a mechanism to insert the control rods, so there is a mechanism that can fail to insert the control rods. Things that can fail, sometimes do. Necessary maintenance tha...
by Chalo
Jan 15 2019 4:17pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3226
Views: 109574

Re: Wind and Solar vs Coal, Gasoline, Nuclear

I'm not necessarily against nuclear. But the notion that any design could be "inherently safe" seems like an oxymoron to me. What am I missing? I think he means "inherently self-extinguishing" rather than inherently safe. There would still be persistent hot actinides, risk of explosion and/or loss ...
by Chalo
Jan 15 2019 12:33pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3226
Views: 109574

Re: Wind and Solar vs Coal, Gasoline, Nuclear

I'm all for more research, but we should be building what we have (and what works now) in the meantime. You mean what occasionally fails to work now, with horrifying catastrophic and unrepairable consequences? No thanks. https://blog.safecast.org/2013/12/current-fukushima-exclusion-zone-map/ If you...
by Chalo
Jan 15 2019 12:11pm
Forum: E-Bike Technical
Topic: Shunts...are they "trimmable"?!
Replies: 11
Views: 227

Re: Shunts...are they "trimmable"?!

Thank you! The initial thought process is to solder the main battery negative lead along one of the faces of the shunt... Why wouldn't you bolt to it? Just for tidiness I guess...plus I have spent a long time practicing and kind of enjoy it now :) Plus I have everything I need to solder and no high...
by Chalo
Jan 15 2019 11:05am
Forum: E-Bike Technical
Topic: Shunts...are they "trimmable"?!
Replies: 11
Views: 227

Re: Shunts...are they "trimmable"?!

Ham wrote:
Jan 15 2019 4:55am
Thank you!

The initial thought process is to solder the main battery negative lead along one of the faces of the shunt...
Why wouldn't you bolt to it?
by Chalo
Jan 15 2019 3:05am
Forum: E-Bike Non-hub Motor Drives
Topic: agni/ lynch motor cargo bike suitable?
Replies: 2
Views: 110

Re: agni/ lynch motor cargo bike suitable?

How much power you get from the motor is a function of the controller and battery you use. You don't have to use as much current or voltage as the motor is rated for.