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Golf Cart Battery Cables Exposed – Does Size Really Matter or Yamaha Golf Carts ?

For gas powered carts, the cables need only be of sufficient size to operate the starter motor, which is only for a few seconds at a time. So that answer is no, the originally installed cables are plenty sufficient in size. For those of us who have the more plentiful, battery powered carts, Yamaha Golf Carts  in Pretoria the answer is somewhat more complicated. The short answer for us is, yes and no, depending upon what we expect from the cart or if modifications to the motor or controller have been made.

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If the cart is absolutely bone stock (all original with no upgrades) and is used primarily as originally intended around the local course, the standard 6 AWG (aka 6 gauge or #6) cables are perfectly fine. Wire (cable) size is measured by a standard called American Wire Gauge or AWG and relates to the diameter or cross sectional area of the copper conductor itself. The smaller the AWG number, the larger the diameter, and hence, larger current carrying capacity. For example, a 2 AWG cable is larger than a 4 AWG which is larger than a 6 AWG. Most cart manufacturers use 6 AWG cables. The finest cables we have found so far are made by MaxiLink.com, which are super flexible and made for extreme duty electric vehicle use.

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Ok, now for you guys that want better performance, we’ll get a little more technical. The maximum current that will ever go through your cables is when the cart is at rest and you mash the gas pedal to the floor. At that point in time, the controller puts out the max power it is capable of, and the motor experiences what is called “locked rotor” current draw, which can be hundreds of amperes. When the motor is in a stalled state, it requires tremendous energy to get it spinning to the rated RPM. If the motor were to stay in the stalled state (if there was some mechanical restraint that would not allow it to turn) the high current would continue to be absorbed by the motor until it actually burned up the windings.

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Typically though, the motor begins to spin immediately, and the current drops down to 20 or so amperes within a few milliseconds (on a stock cart). There are four things that limit that maximum current; the resistance of the internal windings of the motor, the current capacity of the battery pack, the controller capacity and the resistance of the battery cables. The Battery Pack and Motor windings are pretty much fixed values. Keep these in mind because we will come back to them.

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Aftermarket “high torque” or “high speed” motors installed to increase the carts performance are commonplace these days. Unfortunately, that additional performance requires additional power. The motor is only there to convert electrical energy into kinetic energy (not very efficiently either). High power motors have a lower internal resistance than stock, which in turn draws more current. If you remember from science class, power (in watts) is voltage (E) multiplied by the current (I). Since the voltage cannot go any higher than the battery’s 48volts (or 36volts), the current increases in order to satisfy the power demand of the motor. Unfortunately, this is where the resistance of the battery cables come into play. As the current increases in a conductor, power is lost in the form of heat at a rate of I2R, where R is the cable resistance.

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In an ideal cable and to transfer max power, the cable resistance (R) should be zero ohms. Unfortunately all cables have some resistance. The cable resistance causes the voltage to drop (E=IR) and results in lost power to the motor. The solution; increase the size of the battery cables (the larger the cable the less the resistance). Of course, the cable diameter can only be increased within reasonable mechanical size limitations, but that is what is required to reap the full benefits of a high power aftermarket motor. Our example used the locked rotor current to explain the worst case effects. They are less drastic at partial throttle, where the current draw is significantly less.

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If you want to do the drag racing, burnouts, wheelies and such with your cart though, you will need the bigger cables to supply the required massive inrush of current to the motor. Although the resistance of the cables seems tiny (#6 = 0.00047ohms/ft vs. #2 = 0.00015 ohms/ft), the voltage drop is significant when large currents are present, which will reduce performance. So for the high power motor users out there, use large diameter cables and keep them as short as possible. Size will matter to you. Look for other articles by Randy Wade and check out www.digitaloverdrivesystems.com regularly for news, tips and performance products including the new Maxilink Extreme Duty EV cables.

Interesting Facts About Yamaha Golf Carts in Johannesburg:

About Yamaha Golf Carts in Johannesburg:

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A golf cart, as the name suggests, is a small gas or electrically powered vehicle used to carry two golfers and their golf clubs around the entire golf course.Electric golf carts are more popular than gas carts as they don't make noise nor pollute the environment. Today, there is growing awareness about the benefits of using electric golf carts. Many corporate organisations use golf carts to move around in their large campus grounds as well. Though the design of the golf cart has remained the same over the years, some improvements have been made to the standard features as time as progressed.Used electric golf carts should be bought on 'As Is' basis, as they come with the original body and dings, dents and scratches. You can check the accessories that come with the cart. The roof and battery chargers are usually a part of the package. Though the used golf cart may require some worn or torn parts to be replaced, you can always do the repairs at home only.

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While many people think that golf isn’t really golf unless you walk the course, the reality is that some people just can’t do that. That’s where golf carts come in handy. This author personally won’t play golf very often without the benefit of a golf cart, but that’s just my preference – I tend to be a little lazy. But with the new golf carts that are out today, they really can make golf a little more enjoyable. Besides not having to haul your golf bag around with you, the golf cart can also help you avoid fatigue and carry along a cooler of snacks, soda, or beer along with you if that’s what you like to do when you golf. You can also get a good rest on a hot day when you use a golf cart to navigate the course. There are basically three big golf cart manufacturers that dominate the golf cart market: * Yamaha * EZ Go * Club Car Some golf carts are powered with small gas engines while others are electrically powered. The electric golf carts were the first mass-produced electric vehicles for private consumer use. Modern golf carts may have car-like styling despite being no bigger than a traditional golf cart. Accessories such as audio entertainment systems, custom wheels, and custom body panels in an assortment of colors are now being offered as choices for the personal golf cart. Golf carts aren’t just used on the golf course. Some small communities or neighborhoods will use a golf cart where their lack of pollutants, lack of noise, and safety for pedestrians and other cars are beneficial. While purpose-built for general transportation, these are called Neighborhood Electric Vehicles and they have various operating limitations such as top speed and heavy regulation on street use. They do resemble traditional golf carts in style, but some are enclosed to accommodate for use in all types of weather. There is a huge market for aftermarket parts on golf carts. Each major manufacturing company has their own line of aftermarket parts to enhance off-road capabilities. Because golf carts can have a long life, people often buy used golf carts making these aftermarket parts very valuable to people who need to fix broken parts of their golf cart. Golf carts are considered by many golfers to be an essential part of the golf game. Others just think the golf cart make a golf course more dangerous. Either way, the truth is golf carts can really help make the game more enjoyable by leaps and bounds.

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Golf carts have a wide range of uses. Sure, the most obvious is for the golf course. But where else might you use a golf cart. Surprisingly almost anywhere short distances of travel are needed. Below, I'll talk about such instances where the use of a golf cart would be ideal. On the golf course, golf carts are the primary means of transportation aside from walking. Golf carts are convenient and easy to use by everyone. The use of the golf cart makes traveling across the golf course quick and painless. Typically, most golf courses use electric powered golf carts as opposed to gas powered golf carts. Several factors influence this decision, but more than likely they choose electric due to its quiet use. There are many large corporations that look to golf carts in order to help move people across large sites where businesses are located. For example, so much time can be saved by using a golf cart to travel across the worksite as opposed to walking by foot. If the need to go back and forth the workplace frequently, the amount of time saved by using the golf cart could be worth alot of money to the company compared to someone always walking. Many security companies use golf carts to patrol the grounds of a company that they are securing. The golf cart makes it easy to cover alot of ground in a little time. The quietness of the electric golf cart also is a bonus in that it may be quiet enought to catch suspecting crooks off guard. Golf carts have also been known to have a use on the home front, especially if you own alot of land. Sure, if you own a lot of land, you may have a tractor, or other large piece of machinery. Would anyone of them be as efficient as an electric golf cart? Chances are they are not, especially with the current gas prices. As noted above, there are many uses for golf carts aside from the golf course. Whether you are at the golf course, workplace, or even the homefront, the golf cart could be of use to you.

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