Search found 548 matches

by billvon
Dec 15, 2017 3:30 pm
Forum: E-Bike General Discussion
Topic: Noob Question on Wiring
Replies: 6
Views: 89

Re: Noob Question on Wiring

As a total noob, should I disconnect and try to solder the wires to the battery board/mount or take it to an electrician or handyman? Just a note here - Soldered connections are _terrible_ when it comes to resisting repeated flexing or vibration. If you soldered wires back on, make sure they are an...
by billvon
Dec 15, 2017 1:08 pm
Forum: E-Bike General Discussion
Topic: My solar-assisted custom tricycle FOLLIES
Replies: 1141
Views: 84637

Re: My solar-assisted custom tricycle FOLLIES

Is your motor mounted on the front? If so, I wonder if the axle is secure in the dropouts and torque arms. You could be hearing the motor shift as regen is applied. I'd say that that would be "not good." It's difficult to get zero shift, esp. with regen. I have a rear wheel setup with a big torque ...
by billvon
Dec 12, 2017 12:33 pm
Forum: E-Bike General Discussion
Topic: Series hybrid ebike--who has built one?
Replies: 3
Views: 120

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

flat tire wrote:
Dec 12, 2017 12:05 pm
Model aircraft engines for both the combustion motor and generator are probably the most diy-practical power source for a lightweight build.
I am eagerly awaiting free-piston generators; they will be much lighter, more efficient and more reliable than today's crankshaft-to-a-generator systems.
by billvon
Dec 12, 2017 12:23 pm
Forum: Battery Technology
Topic: Do batteries "waste away" if not used?
Replies: 4
Views: 175

Re: Do batteries "waste away" if not used?

Yes, batteries deteriorate with time. You can do things to slow this process. If, for example, you store your li-ion batteries at about a 50% state of charge at cold temperatures, they will last years. If you store them at 100% SOC in a hot garage you'll be lucky to get a year.
by billvon
Dec 12, 2017 11:46 am
Forum: Alternative Energy
Topic: 24V/48V UPS as an inverter for mini power-wall
Replies: 10
Views: 145

Re: 24V/48V UPS as an inverter for mini power-wall

24V/48V UPS as an inverter for mini power-wall A few warnings here: 1) Powerwalls can feed back to the grid. UPS inverters will go up in smoke if you try that; they are really only good for backup. 2) Inverters for UPSes are designed almost exclusively for computer power supplies - which are either...
by billvon
Dec 11, 2017 5:49 pm
Forum: E-Vehicles General Discussion
Topic: Madness. Why such slow penetration for hybrid?
Replies: 64
Views: 1166

Re: Madness. Why such slow penetration for hybrid?

That coal is enjoying a renaissance because a handful of mines in one U.S. state have resumed production as evidence of some politician or other who is going to "save" democracy and take back a country for the people by destroying the tyrants at the U.S. EPA who "hate freedom" and have gotten far t...
by billvon
Dec 11, 2017 1:28 pm
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 44
Views: 818

Re: Super capacitors to save battery life?

pulling 2kW from a regular 110 outlet is alsking for problems. most outlets are rated for 15A. so anything above 1.5kW is asking for problems. personally i would stay below 1.25kW in order to make sure the breaker does not pop anyway due to heat soak when you load it for 2 hours at full tilt. FYI t...
by billvon
Dec 09, 2017 12:13 am
Forum: General Discussion
Topic: gas price thread
Replies: 686
Views: 34502

Re: gas price thread

Just the facts. You seem to have a bit of an allergy to facts. Okay, you made me start another history lesson on you. Saudi Arabia is a monarchy. Socialism is what the EU is, and we see how thats working out. The EU has had a history of just doing dumb stuff. Twice, we had to spill our blood to bai...
by billvon
Dec 08, 2017 6:49 pm
Forum: E-Vehicles General Discussion
Topic: Madness. Why such slow penetration for hybrid?
Replies: 64
Views: 1166

Re: Madness. Why such slow penetration for hybrid?

. . . WV coal mines are reopening and miners are going back to work for a good wage. The greenies are on the run. All the windmills and solar panels don't mount to nothing. Another hapless victim of fake news. You really should check your facts before posting; it avoids embarrassing errors like the...
by billvon
Dec 07, 2017 12:57 am
Forum: E-Vehicles General Discussion
Topic: Madness. Why such slow penetration for hybrid?
Replies: 64
Views: 1166

Re: Madness. Why such slow penetration for hybrid?

I can understand all but i feel hybrid is a more feasible solution. As city infrastructures aren't enough for a major e-vehicle. Grid needs to be totally changed and we are talking about 100 billions of investment . The grid as it exists right now could actually handle a tremendous amount of EV cha...
by billvon
Dec 07, 2017 12:48 am
Forum: General Discussion
Topic: gas price thread
Replies: 686
Views: 34502

Re: gas price thread

solera ebiker wrote:
Dec 06, 2017 7:29 pm
So you give kudos to the Saudis because they let their women drive. And their government makes lots off their oil, and gives that money to its people to keep them happy. And that's good. But you are against socialism.

Whatever floats your boat, I guess.
by billvon
Dec 06, 2017 5:23 pm
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 44
Views: 818

Re: Super capacitors to save battery life?

Thanks for the reply Bill. My battery is in LA getting repaired a the ebike shop I bought it at. Over the xmas break we are riding LA to Las Vegas and I will need it back. I was trying to do some more research on the dual link systems you were mentioning? Would that be an automated switching betwee...
by billvon
Dec 05, 2017 5:19 pm
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 44
Views: 818

Re: Super capacitors to save battery life?

Is it possible to add just enough super capacitors to capture regenerative breaking and also supply that initial boost of power? Short answer - no. Putting supercaps in parallel will not significantly change things, since energy storage is related to voltage change and there won't be much voltage c...
by billvon
Dec 05, 2017 4:10 pm
Forum: General Discussion
Topic: gas price thread
Replies: 686
Views: 34502

Re: gas price thread

Now, Kuwait and the Saudis thereS a set up for you. Those guys are literally swimming in oil. Which they sell on the market, and in turn, they make enough revenue to keep their respective people happy for now. If Saudi Arabia - a country known for its mistreatment and subjugation of women - is an e...
by billvon
Dec 05, 2017 12:51 pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 1126
Views: 19494

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Over the past years the German state of Hesse has been plagued by power outages, Hessen public television (HR) reported here, as it pondered why Hesse has become so prone to blackouts. HR cites the Bundesnetzagentur (Federal Grid Agency), which says there are over 172,000 power outages annually, wh...
by billvon
Dec 04, 2017 6:37 pm
Forum: General Discussion
Topic: gas price thread
Replies: 686
Views: 34502

Re: gas price thread

Averaging around $3.10 a gallon here and heading higher. If I used any gas I'd be worried.
by billvon
Dec 04, 2017 12:19 pm
Forum: E-Vehicles General Discussion
Topic: Madness. Why such slow penetration for hybrid?
Replies: 64
Views: 1166

Re: Madness. Why such slow penetration for hybrid?

Actually, in at least this case there was a U.S. subsidy. Billions of dollars of it. Hmm. I thought that all the US dollars paid to Abengoa (in the form of purchases and loan guarantees) were for projects within the US, including solar power stations and ethanol fuel processing facilities. Did thos...
by billvon
Dec 01, 2017 1:37 pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Swapping incandescent for LED light
Replies: 5
Views: 214

Re: Swapping incandescent for LED light

So... I've now connected up the above LED to my battery through a switch. The battery is 60V nominal, but can be as high as 71V when freshly charged. The LED is rated from 9V to 80V. I also have a Volt/ammeter connected on my bike and I can measure that this LED is drawing 1.7A or more than 100W! T...
by billvon
Dec 01, 2017 12:16 pm
Forum: E-Vehicles General Discussion
Topic: Madness. Why such slow penetration for hybrid?
Replies: 64
Views: 1166

Re: Madness. Why such slow penetration for hybrid?

The research I've seen leads me to believe that there is frequently some creative accounting going on to make solar look as inexpensive as some of the alternatives. There are little tricks like not applying the appropriate amortization based on reasonable life expectancies of equipment and so forth...
by billvon
Dec 01, 2017 12:10 pm
Forum: E-Vehicles General Discussion
Topic: Madness. Why such slow penetration for hybrid?
Replies: 64
Views: 1166

Re: Madness. Why such slow penetration for hybrid?

I'm all for that. But I don't think alternative energy would do that well. Certainly without subsidies, solar wouldn't have made the gains it has made. Definitely true. When I first looked at solar, it was $10 a watt. Now it's well under $1 a watt. Much of that progress has come from the artificial...
by billvon
Dec 01, 2017 12:05 pm
Forum: E-Vehicles General Discussion
Topic: Madness. Why such slow penetration for hybrid?
Replies: 64
Views: 1166

Re: Madness. Why such slow penetration for hybrid?

. . . being stupid . . .knucklehead. . . . knuckleheadishness.. . l dummy. . . stupid statements. . . stupid. Looks like you have trouble making logical arguments, and are going to resort to personal attacks and emotional arguments instead. Oh well. Such tactics are pretty common among climate chan...
by billvon
Dec 01, 2017 11:10 am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 1126
Views: 19494

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Sure but the carbon cycle is a bit of red herring in the face of having a population of 10billion people and because carbon is the 4th most abundant element in the universe after Oxygen. Definitely true; much of our planet is made of carbon. And if we as a society decide to leave it in the ground r...
by billvon
Nov 30, 2017 6:22 pm
Forum: Motor Technology
Topic: cooler graphene windings in motors?
Replies: 12
Views: 324

Re: cooler graphene windings in motors?

zzoing wrote:
Nov 30, 2017 1:45 am
It'd be cool to have a 98 percent efficient hub. please send me one, It's a wise investment.
Given that copper loss is only a fraction of the total loss in a well designed motor - color me unconvinced.