Search found 65 matches

by classicalgas
Apr 13 2019 10:57am
Forum: E-Vehicles General Discussion
Topic: ICE vs Electric Motor Transmissions
Replies: 70
Views: 1972

Re: ICE vs Electric Motor Transmissions

"Are we talking physics or law?" Both. Good law ( fair, realistic, defensible) is reality based. Double your vehicle speed( to 40 mph) and your kinetic energy (impact damage) is four times what it was at 20 mph "bike" speeds. That means four times the danger to pedestrians, four times the braking po...
by classicalgas
Apr 10 2019 9:07pm
Forum: E-Vehicles General Discussion
Topic: ICE vs Electric Motor Transmissions
Replies: 70
Views: 1972

Re: ICE vs Electric Motor Transmissions

"5kw geared to 40mph would be about right since I rarely run above 35mph anyways." That's a motor vehicle by any reasonable definition, not an ebike. Once you hit moped power, you'd better plan on meeting motor vehicle licensing, lighting and brake standards. If not today, soon. Gasbikes stayed unde...
by classicalgas
Apr 09 2019 11:04pm
Forum: E-Vehicles General Discussion
Topic: ICE vs Electric Motor Transmissions
Replies: 70
Views: 1972

Re: ICE vs Electric Motor Transmissions

And these guys, who's business is converting ICE vehicles to electric?

https://quantumworks.com/multi-speed-ge ... plication/
by classicalgas
Apr 09 2019 10:20pm
Forum: E-Vehicles General Discussion
Topic: ICE vs Electric Motor Transmissions
Replies: 70
Views: 1972

Re: ICE vs Electric Motor Transmissions

"Anyone who doesn't understand how motors work could easily be confused into thinking it's a good idea, but it doesn't make it a good idea."

So all the companies making and selling mid drives (kits and complete bikes) are "confused" ?
by classicalgas
Apr 07 2019 12:01pm
Forum: E-Vehicles General Discussion
Topic: ICE vs Electric Motor Transmissions
Replies: 70
Views: 1972

Re: ICE vs Electric Motor Transmissions

Simply adding power to avoid a multi speed trany isn't a real life option for production ebikes...legal power limits, battery amps/cost, etc.

Evidently ebike manufacturers see a use for gearboxes, I've seen hub drives with two speed tranys, and a rear hub gearmotor with a three speed IGH built in.
by classicalgas
Mar 23 2019 10:41am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3701
Views: 133627

Re: Wind and Solar vs Coal, Gasoline, Nuclear

"So nothing's really green. Does that mean it doesn't matter which source we choose?" Are you missing the point on purpose? Nuclear energy isn't "green" simply by not releasing co2 during power production, it's a polluting as oil or coal, in that all release long term toxins into the environment, bo...
by classicalgas
Mar 23 2019 10:28am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3701
Views: 133627

Re: Wind and Solar vs Coal, Gasoline, Nuclear

"The Chernobyl exclusion zone is the healthiest ecosystem in the Ukraine. Several species we thought were extinct now live there in large numbers. People live there; others take tours through it. From that perspective, the Chernobyl accident is the best thing to happen to that area ecologically sinc...
by classicalgas
Mar 23 2019 9:51am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3701
Views: 133627

Re: Wind and Solar vs Coal, Gasoline, Nuclear

"Talking about Hydroelectricity should be considered an IQ failure test on this thread and be banned complete with their IP-firewalled from the ES forums server for wasting folks time." So should calling nuclear power "green". Once again, low co2 emissions (co2 is released when making nuclear fuel a...
by classicalgas
Mar 11 2019 10:14pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3701
Views: 133627

Re: Wind and Solar vs Coal, Gasoline, Nuclear

"of one of the biggest active volcanoes on the planet which has 1000 times the destructive potential ?" Define that. Is that like equating rare earth wastes to nuclear fuel rods as "dangerous", like someone did in this thread? Even if one of Hawwii's volcanoes blew as fully as St Helens did, you'd h...
by classicalgas
Mar 10 2019 2:36pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3701
Views: 133627

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Fukoshima kinda made nuclear unattractive to anyplace with a big tourist industry...like Hawaii. It doesn't take too many people picking another tropical vacation destination (where there aren't nuclear plants within hundred miles) to hurt your tourism bottom line.
by classicalgas
Mar 04 2019 9:43pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3701
Views: 133627

Re: Wind and Solar vs Coal, Gasoline, Nuclear

"Nuclear based France is literally the only green low CO2 emitting country in the world right now." Bullshit. Iceland, and a half dozen other countries produce more of their power "green" than France (ignoring the fact that nuclear isn't green by any sane definition) https://makewealthhistory.org/20...
by classicalgas
Mar 03 2019 9:24pm
Forum: Battery Technology
Topic: WalMart EverStart Battery Test
Replies: 24
Views: 2582

Re: WalMart EverStart Battery Test

Good stuff, thanks. Evidently my search used the wrong terms.

I don't understand why the massive volume production of boosters and tool packs doesn't result in better tech for the money than home built packs, at least for legal level wattage.
by classicalgas
Mar 03 2019 7:39pm
Forum: Battery Technology
Topic: WalMart EverStart Battery Test
Replies: 24
Views: 2582

jumper box/boost box used as is as pack module?

Can't seem to find any previous mention, anyone tried this?

These are lithium packs with built in bms,10-18 (claimed) Ah at 12-15 v, typically 10a sustained output, much higher peak,rugged enclosures, and cheap. Some extras (lights, device charging ports, charge state readouts...)
by classicalgas
Mar 03 2019 4:36pm
Forum: E-Vehicles General Discussion
Topic: The tipping point is just a few years out
Replies: 81
Views: 2566

Re: The tipping point is just a few years out

"See, you're back to designing people's lives around personal cars, rather than the other way around. Already, folks in real cities are choosing off-hours commutes to avoid being stuck in traffic for with self-defeating shnooks and their self-imposed problems. " That's making the assumption that cit...
by classicalgas
Feb 13 2019 7:52pm
Forum: E-Bike General Discussion
Topic: Catrike with Grin All Axle front hub motors
Replies: 29
Views: 3156

Re: Catrike with Grin All Axle front hub motors

"Commercial tadpole trike needs more weight to the rear, it"s too front heavy without any motor. I think they are something like 70/30 from the box. Rear wheel needs all grip it can get, that increases safety. My DIY velo is 35/65." Grip isn't the limiting factor, tipping (up on two wheels) is. It's...
by classicalgas
Feb 13 2019 7:32pm
Forum: E-Bike General Discussion
Topic: E-bike Powered by Tool Batteries?
Replies: 12
Views: 756

Re: E-bike Powered by Tool Batteries?

This looks like another good reason to consider tool packs for ebikes...an easy to build, cheap (as solar charging goes) and efficient solar charge station for your tool packs..from box store parts (mostly) https://www.greenbuildermedia.com/buildingscience/power-your-jobsite-cordless-tools-with-this...
by classicalgas
Feb 03 2019 2:26pm
Forum: E-Vehicles General Discussion
Topic: The tipping point is just a few years out
Replies: 81
Views: 2566

Re: The tipping point is just a few years out

..."on-demand autonomous electric vehicles owned by fleets"...That futurist is out of touch with the real world. A cheap, older, (possibly electric) car in your driveway is going to stay more useful to most people than a self driving car have to schedule... for a looong time. The focus of tech in th...
by classicalgas
Jan 19 2019 4:51pm
Forum: E-Bike General Discussion
Topic: Sortimo electric cargo trikes
Replies: 55
Views: 2580

Re: Sortimo electric cargo trikes

"aerodynamics are no better than a TT rider on an upright (the extra wheel doesn't help)"... various charts say a TT bike and tucked rider has about 20% less drag than an upright commuter bike( even without fenders) so that trike is much cleaner than a (non race) upright already That difference tran...
by classicalgas
Jan 01 2019 11:46pm
Forum: E-Bike General Discussion
Topic: Sortimo electric cargo trikes
Replies: 55
Views: 2580

Re: Sortimo electric cargo trikes

"Until you come to a hill, or are pulling away from a stop. Then the "aero" makes you even slower."...and then you more than make it up on the next long flat or downhill where the draggy bike will hit terminal speed. "ALL" high efficiency vehicles put an emphasis on areo...even those where the test ...
by classicalgas
Dec 26 2018 9:20pm
Forum: E-Bike General Discussion
Topic: Sortimo electric cargo trikes
Replies: 55
Views: 2580

Re: Sortimo electric cargo trikes

" Velocars have been around more than 70 years now; if they were capable of becoming a quasi-mainstream transportation option, they would have done it already." Cyclecars (velocars without pedals) have been a significant percentage of road vehicles in a few times and places..usually when fuel cost w...
by classicalgas
Dec 26 2018 8:51pm
Forum: E-Vehicles General Discussion
Topic: EV efficiency - new record
Replies: 19
Views: 1086

Re: EV efficiency - new record

The Sport Lotus Elise weighs 798 kg (1800 lbs)...and still has airbags and power windows, and probably AC and electric power steering, though I can't be sure. A 2018 IC Morgan trike weighs 1200 lbs, with no high tech materials used whatsoever. Just for comparison, a base model '90 Miata weighed bare...
by classicalgas
Dec 25 2018 12:26pm
Forum: E-Bike General Discussion
Topic: Sortimo electric cargo trikes
Replies: 55
Views: 2580

Re: Sortimo electric cargo trikes

"It wasn't always fun, but it was practicable. Not that different from walking around in the same conditions." The wind chill on a downhill, or a motorcycle at traffic speeds, can make 45 F feel like freezing...quite a lot different than walking. You guys did notice how that German trike is being ma...
by classicalgas
Dec 25 2018 11:54am
Forum: E-Vehicles General Discussion
Topic: EV efficiency - new record
Replies: 19
Views: 1086

Re: EV efficiency - new record

OK, it's light, but if you put that much tech into a single seat or tandem velocar with electric boost, it would weigh, at most,250 lbs empty. I'd agree, the big, heavy typical passenger vehicles on the road today are stupidly wasteful. Light vehicles aren't new, we've done them long before carbon f...
by classicalgas
Dec 24 2018 10:01pm
Forum: E-Bike General Discussion
Topic: Sortimo electric cargo trikes
Replies: 55
Views: 2580

Re: Sortimo electric cargo trikes

Bikes do not offer "plenty " of weather protection. I commuted 30 miles a day in Washington state, year round, for years. Half the year it was frocking miserable. Rain, cold, rain and cold, snow and slush, traffic speed far above what I could manage, and few alternatives to mixing with traffic along...
by classicalgas
Dec 24 2018 9:46pm
Forum: E-Bike General Discussion
Topic: Sortimo electric cargo trikes
Replies: 55
Views: 2580

Re: Sortimo electric cargo trikes

"If velomobiles were viable, they'd be common. " You could say the same for electric vehicles. Most of the issue(velo scarcity) is cost, you can buy a pretty nice used car, or brand new motorcycle, for the cost of a velo.Another issue is that the typical LEO will often stop one as an unlicensed moto...