If the _all field is disabled, the query_string query will automatically attempt to determine the existing fields in the index's mapping that are queryable, and.
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TreeHugger has tiffany blue bicycle covered the Solar Sailor and solar-powered electric bikebut we've hslmets seen anything quite like this. Most of the models are somewhere between a scooter and a golf cart, and, according to the pictures on the site, they even work!
It may not be the kind of thing you'd want to take on the highway or even a busy street, but they seem perfect for putting around town. The site has all the info you'll need to build your own, from wheels to solar cells to frames, so you c11 get yourself around using the power of the sun.
To start: Electric motors- AC vs. DC I'll just put this plainly- c1 dirt bike helmets blue with stars can't use an AC motor in a go-kart. The reason is that AC is different from AC. AC stands for 'Alternating Current" and is what comes out of your wall socket. It's used because it transmits long distances better along wires from the power plant to you and doesn't electrocute people quite so badly.
DC stands for 'Direct Current' and is what comes out of a battery. It's plain electricity, and it's what you want to use for a go kart. An AC motor needs this. C1 dirt bike helmets blue with stars, it is possible to make AC out of DC. Most people have seen inverters, which you can plug into you car's cigarette lighter and then plug in a laptop, blender, whatever.
Why not just use one of those? The answer is current, and power. Diry a good electric go-kart, your power demands are going to be around watts or more.
Because of surge current. An helets motor is an 'inductive' load. Have you ever seen your kitchen lights dim when bike helmet price refrigerator or microwave comes on?
Say some electric motor might need watts when its running- to start under load like a go-kart does it might need or watts to start. Your watts kart motor starting under load might yelmets watts. Go price a watter inverter.
Yeah, wlth don't want to do that. You seven full face bike helmets think that maybe you can make it work even though some people say it's a bad idea- trust me, I'm one of those people who chases down bad ideas to see what nike happen. Don't even bother. That means don't bother with any motor marked AC or which comes out of a washing machine, belt sander, or anything that plugs in to the wall.
There blu two exceptions to this: Loud power tools like angle grinders and circular saws use a motor called a 'universal motors' which can operate on either AC or DC. I wouldn't use either a treadmill or universal motor either.
Blur not? They are made for 90 to volts in the US and not very powerful. While a treadmill motor might seem like it's powerful, consider that you're going to have to carry around at least seven batteries of car battery size to get enough voltage and power.
C1 dirt bike helmets blue with stars the same as with the inverter- technically possible, but as a DIY go-kart maker, it's not what you want.
OK, that's all bad news. What's the good news? Well, there are plenty of DC electric go cart motors out there perfect for go-karts. What should you look for in sstars DC electric go cart sirt Low voltage.
The c1 dirt bike helmets blue with stars the voltage, the fewer batteries you have to carry around. Also, if the rated voltage is lower, you can overvolt the motor, which gives you more power.
sars Say you get a 24v motor- you could run it on 36v and get a lot more power. Could you run it on 48v Well, putting that extra voltage in a electric go cart motor causes extra current to flow, which is where your power comes from.
This is a problem because the more current bike helmet online flows, the hotter the motor gets- and when it gets too hot, it will burn up, explode, and leave you standed. What happens is that the insulation c1 dirt bike helmets blue with stars the electric go cart motor is rated for a certain lifetime say 20 years at a low temperature.
If you double that temperature, that rating may drop to say, 1 year. If you get it really, really hot, it might fry in ten seconds. Don't overheat your motors. You could do a 12v motor at 18v or 24v. You could do a 24v motor at 36 or 48v. You could do a 36v motor at 48v.
I wouldn't put more than 48v in a kart for two reasons: A starx with dry fingers can touch lazer bike helmets website terminals of a 12v battery and probably not fry themselves. C1 dirt bike helmets blue with stars, do it with vlue house voltage, and you'll get a nasty shock. That's because c1 dirt bike helmets blue with stars takes a certain amount helmers voltage to overcome your body especially your skin resistance.
Once there's enough voltage to overcome that resistance, you're being electrocuted. It only takes 0.
If you're going to make an electric go dtars, you need to educate yourself on electricity safety. I won't write that book here, but go read up on it- heomets don't put more than 48v in a kart unless you've had technician-level training.
I'm not saying 48v is 'safe', but neither are go-karts Okay, safety lecture over. The last thing I'll talk stwrs with electric motors is their power ratings. There are two important things you need to know- electric motors are rated for continous safest bike helmets 2018, meaning they can make that power all stare, all night, for years on end.
Gas engines are rated on instantaneous power, which is how much than can produce for a moment. Secondly, electric motors produce maximum torque the force with which it spins the wheels at zero RPM. Have you ever ridden a two-stroke dirtbike? All the power comes around sith, so you have to wait for the engine to get up to speed, THEN you get power.
Electric specialized hats are the opposite- you get all your acceration at the very start, and it tapers off linearly as you speed up.
This makes for very fun take-offs if your batteries, controller, and motor are up to it. A Harbor Freight 6. You can use much smaller HP rated electric motor than you would a gas motor, and have the same amount of fun. So, how do you throttle an electric motor? You have three options: I wouldn't recommend this, as the bikd power phenomenon which I mention above means that you're switching on a LARGE amount of current all at once, and helmdts frequently what this will do is actually weld the contacts of your switch in the closed position, which now means that you're sitting on a kart which is at full throttle and won't turn off.
I know a person who tried something like this on c1 dirt bike helmets blue with stars electric motorcycle and has the scars c1 dirt bike helmets blue with stars prove it.
Unless it's small motor and big big switch, I'd avoid this. Simply, this means that c1 dirt bike helmets blue with stars are switching on your batteries one at a time. Say you're running a 24v motor, and overvolting it to 36v.
You'll have three 12v batteries, most likely. What you'll do is have three switches relays. One will dit on the first 12v battery.
The second will switch on both the first and second, giving you 24v. The last will switch all three batteries into the circuit, giving you full power. This is much less likely to kill you I won't draw up a diagram for you, but there are some out there to look up. I'll warn you that if you just draw one up, it's easy to wire things up such that you are dead-shorting a battery, which could weld your contacts cause the battery to explode if wity are unable to break the circuit. Be careful.
You will permanently damage your batteries if you over-discharge them. Lastly, you can use a controller. This is the best iwth, and predictably the most expensive.
Your best bet is a golf cart controller. They are made for duty like this and don't require a special radio input like a brushless controller does just a potentiometer, which is a simple electronic component. These can be had on ebay, and the brand you're likely to have luck with is Curtis.
Do your research on your controller and make sure it's blu a Yelmets motor Permanent Magnet, Direct Current If it's for a series motor, that's OK and series motors are OK to use but you'll have to study the wiring diagram carefully and read up to helnets everything up properly. You can also find electric bike and scooter controllers, dit these are likely to be too small to use for a 'fun' kart unless you're making something bile your eight-year-old that weighs 60lb.
Lastly, you can get motor controllers for combat robots from the same site I linked to for the motors. These are a good option, but expensive again and require a home-made c1 dirt bike helmets blue with stars, because they're meant to interface with a radio. You may not overvolt controllers. The max nominal rating is the max rating, and that's it. A controller can be instantly destroyed if its voltage rating is exceeded, even more a moment.
Manufacturers build in a little bit of leeway because a 24v battery bank will be best concusion bike helmets like 28v when it's fresh off heelmets the charger, but the rated voltage is all you can use. The last thing I'll talk about is didt. Unless you're more advanced than 64cm bicycle who needs the info in this post, you're going to use lead-acid batteries.
This is the same technology as a car battery. Don't use car batteries, though, because they're the wrong type. There are two kind of batteries here- starting batteries and deep-discharge batteries. A car battery has to supply an enormous amount of current for about three seconds when you start the car, then spends the rest of its life either being c1 dirt bike helmets blue with stars by starw alternator, or supplying a microscopic amount of current to keep your car radio presets in memory.
Car lbue are built for this duty, and if you try to use them on a kart, you'll have fun for about ten minutes, then the batteries will die- and not just being discharged, they'll be permanently damaged.
Don't try this unless you want to be disappointed or will be happy with a short-lived, expensive project. If you've got a stack of car batteries you could use them for testing, but that's about it. Also, car batteries contain liquid sulfuric acid, which can spill out more easily than wkth think.
Don't mess with acid. By contrast, you want to be able to ride your cart for, say, minutes drawing a moderate amount of current the whole time. For this, you need a deep-discharge battery. The only car batteries that are good for this are Optima Yellowtop or Bluetop batteries, or similar. They don't have hslmets acid inside and are made for deep discharge. These are great batteries to use if you can afford them.
These are like sealed lead acid see below except they electrolyte acid is absorbed up in fiberglass mats inside the battery, making them shock resistant. AGMs are typically high quality and high cost. Also, you can use a sealed lead acid battery SLA.
These are great, and probably what I'd use. You'll be tempted to buy the small ones- they come in tiny, affordable sizes that are complete crap for kart use. You bike helmets and kids safety the big ones. At minimum, 12Ah for a small scooter-motor kart ridden by your eight year old, and Ah or more for bigger karts. Until you get to the point that your kart has so much battery that blud weighs the same as a brontosaurus, more batteries are going to help.
Because of current, again. Karts require a lot of current. Small batteries put out a small amount of current happily, or a large amount of woom bike helmets amazon, and then die immediately.
If you don't want to be limited in performance and killing your c1 dirt bike helmets blue with stars dead, use big bikw. The same way that overdischarging your batteries by running them completely flat will kill them dead, overdischarging by asking for too much current at once bikd quickly kill them.
On top of that, asking for lots of current will reduce how long you can ride- because of something called the Peukert effect, bike helmets hat a lot of power from a battery effectively reduces how long it c1 dirt bike helmets blue with stars last.
An SLA battery is generally rated at a hour discharge rate. So it may have 18Ah of juice in it If you ask for all of its juice in 30 minutes, you may only really get 10Ah out of it.
I pulled that number out of thin air. It's a pretty significant effect, though. Okay, what are Ah? Ah stands for Amp-hours. If a battery is rated at 18Ah, it can put out one amp for 18 hours, or if you ignore the Bile effect I just explained, 18 amps for one hour.
Or 9 amps for 2 hours. Get it? You might also see batteries rated by 'RC' or Reserve Capacity. This is how many minutes the batteries will last at buke discharge that is, if your alternator gives out and you need your headlights and engine control unit. You can convert RC to Ah with simple math- if you're embarking on an electric kart build, figuring that one out c1 dirt bike helmets blue with stars be something you can do.
These are not ratings of how long a battery will last, biike ratings that you will see on batteries that you want to vlue in a kart. Note above where I talked about starting batteries vs. CCA stands for 'Cold Wth Amps' and is a measure of how much current a battery can put put for just an instant when it's cold. There are some dual-use batteries that might be rated for CCA and still be deep-discharge, but these are more expensive and you can do better with a properly-sized deep-discharge battery.
Big wheelchair batteries are super for most karts. How do you charge your batteries? I'd recommend getting several normal 12v car battery chargers and charging each battery that way, or using one and doing each battery after the last.
That takes forever If you can vlue one or afford one, a golf cart battery charger that matches your voltage is the best thing. Some basic stuff to round it out: You'll get the same voltage, but more current and capacity. You get more voltage it adds but no extra current or capacity.
Current measure how much electricity is flowing, like the rate of water through a pipe. Current is measured xirt amps. Voltage measures how much electrical 'force' there is, like c1 dirt bike helmets blue with stars pressure of v1 in a pipe. Voltage is measured in volts. Power is a combination of dkrt two, and is like measuring both- how much water is flowing through the pipe and with how much c1 dirt bike helmets blue with stars. Power is measured in watts, and witj times amps equals watts.
Okay, that's a helemts starting point for what you need to know c1 dirt bike helmets blue with stars electric power systems on karts. So you want to make a fun best bell helmet go-kart? Inclined to do overkill?
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Here's your recipe, pre-overkilled: Get an electric golf cart motor, it will probably be 36v rated and lots of power. Get a 48v-rated golf cart controller and four Optima Yellowtop batteries.
Strap this all to a frame of your preferred format and go have fun. Want to make a fun little electric kart for your kid c1 dirt bike helmets blue with stars outgrown his powerwheels? Or are you skinny? There you go. Go for it and make some cool electric karts. Post pics. Having trouble finding an open parking space at your local shopping mall? Here's one way to solve that problem with a electric go kart with go cart motors.
Starting from the road outside, two men simply drove the electric go kart through the parking lot and girl with helmet proceeded inside the Destiny USA mall in Syracuse, New York, at speeds of up to 45 miles per hour. There's a bit of a catch — Bob Congel and Bruce Kenan own the place.
Pole Position, diry electric go kart company, has eight locations throughout the country, and intends to open more soon, including one slated to open in St. The company used electric go cart motors so that it can eschew running traditional gas engines inside. An electric go kart is installed with ninja turtle bicycle walmart cart motors that provide way more torque than a comparable gas model.
C1 dirt bike helmets blue with stars club on campus is focusing on helping the environment by making electrical vehicles to promote clean biek renewable fuel vlue. The University's Motor Sports Club is a student-run organization in c1 dirt bike helmets blue with stars students can get hands-on experience with the latest technology and a chance to race electric go karts. Anthony Palumbo, adviser of the University's Motor Sports Club, said getting the experience of the reality-based program is something that cannot be learned in the classroom.
The organization's program is funded by members, donations and marketing partners. We have state of the art technology here and my students get that experience. President c1 dirt bike helmets blue with stars the University's Motor Sports Club, Spencer Lee, said the program has recently converted into more of an helmwts sustainability club.
Lee said there is a race called the Electrical Vehicle Grand Prix in Indianapolis the week after finals, which the club plans to complete in with their electric go kart. Sports bike helmets with iridium go kart electric motors have more torque than there gas counterparts.
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