The Crystalyte hub motor is one of the front runners in cheap and powerful hub motors from China. T

The Crystalyte hub motor is one of the front runners in cheap and powerful hub motors from China.  They are especially well known for their large and heavy performance motors, the 5300 series (currently used in the $12,000 Stealth cheap hotels in bangkok Bomber).
The Crystalyte hub motor is one of the front runners in cheap and powerful hub motors from China.  They are especially well known for their large and heavy performance motors, the 5300 series (currently used in the $12,000 Stealth Bomber).
In the summer of 2011 Crystalyte cheap hotels in bangkok released a new series that may become a game changer, an affordably priced and rugged hub motor designed with the US market in mind.  The model shaves 10 pounds off the older 5304 series, and a lower price as well. You can find the new Crystalyte motors from some dealers for as low as $280.
The front wheel hubs are all designed to allow a front disc brake, an essential on a high speed bike. However, because the front hub motor is built narrower to fit a standard front bike fork, expect a 25% reduction in power when compared to the rear-drive motor.
Crystalyte has decided in this new series of motor to adopt many of the features found in the 9C motor clones which have been manufactured in dozens of factories in China. The 9C clones have become a staple product sold in various cheap kits found on the internet and on eBay, but they have many problems in terms of quality control, as well as several small design cheap hotels in bangkok issues which make them problematic to use in the demanding western e-bike markets. Crystalyte has adopted the 9C design and tweaked it to better cheap hotels in bangkok fit western users. For example, with the new Crystalyte, disc brakes and rear freewheels fit much easier than on comparable 9C motors.
The Crystalyte borrows many of the favorable design characteristics found in the 9C such as cast (instead of stamped) motor sideplates , and it also has the same proven magnet and stator tooth count. However, one noticeable difference is that the cables do not exit the hub through the end of a hollow axle (the normal method found on most hubs). Instead they pass through a short slot on the axle side near the left side bearing, similar to the Bionx hub pictured below. This is a great improvement for fitting the rear torque arm, which are a must for all rear hub motors, cheap hotels in bangkok as well as for changing out the wire end-connectors to match a different controller. Now, both of these operations cheap hotels in bangkok are much easier.
The Crystalyte is a powerful motor, easily capable of handling 2000 watts without risk of electronic meltdown. Although it s lighter than the Crystalytes of the past, this motor feels very solid out of the box. Here are the weights of the different motors in this series:
The $9000 Stealth cheap hotels in bangkok Fighter uses the HS3540 Crystalyte hub motor running 3000 watts at 40-MPH, and Stealth is still is able to cover the warranty. The $8000 Kenny Roberts Picycle which I test rode ( see article here )  was made to be dependable, and runs the HT3540 at 40-MPH. The Picycles “Limited” version runs the same motor, but restricted to 30 MPH. Picycles president Marcus Hayes reports that not a single Picycle has been sent back for warranty repair to date. Other bike manufacturers  that are using this sturdy Crystalite platform are Haberbrink bikes, and Hi-Power Cycles.
One of the decisions you will have to make if you buy a Crystalyte is whether you want to go with a motor wound for torque or one wound for speed.  Some of the following factors need to be weighed before making a selection appropriate to your needs:
Gearing will change depending on what the size of your wheels are.  A 20-inch wheeled bike will be geared lower than a 29er, which will be geared super high. The more amps and voltage you pump, the more likely you should go with a speed motor for top speed since torque cheap hotels in bangkok will not be much of an issue. However if your daily commute involves climbing steep grades you are better off with the high-torque motors and smaller wheels, and may want to consider limiting the volts and amps to keep from smoking your motor.
The Crystalye hub motor comes either cheap hotels in bangkok sensored or non-sensored. A sensored motor means you have extra wires going to Hall sensors, which track the position of the rotor and  help control the timing of the motor, especially at low RPMs.
If you are in doubt as to whether to go with a sensored or sensorless motor, then do what most E-bikers do and go sensored. If you decide cheap hotels in bangkok you don t want hall wires (or if the Hall wires fail), you can always cut them off and still use a sensorless motor. cheap hotels in bangkok Manufacturers producing a motor with Halls is a wise choice. It allows the customer to decide what controller they want to use. Also, a customer may already cheap hotels in bangkok own an expensive controller that requires Halls, cheap hotels in bangkok saving the expense of having to replace it.
If your controller is set up for it, you can have regenerative braking with the Crystalyte motor. When I set up my hub, I quickly realized that I was unable to adapt my hydraulic disc brakes to it. I had to then use Avid bb mechanical disk brakes, which bolted on just fine. There will be clearance issues adapting the disc brake onto this giant hub motor.
To utilize the regenerative braking you need an E-brake handle. An E-brake has a wire that connects to the controller and plugs into a 3-pin connector. You then attach your brake cable, just as you would on a normal bike. The slightest movement of the brake handle cuts the motor power off no matter what you are doing with throttle, and then the regen steps in. This system is either completely on or off with nothing in between, and its braking is strong enough that you can feel it. It effectively slows the bike, even on steep downhills where you can just coast with the regen engaged to help moderate your speed as well as force power back into your battery pack.
Regen braking also helps keep your bike brakes from overheating. However, if you need a fast emergency stop the regen isn t very effective, which is why it s wise to use both regen and a disc brake on the rear. When you first pull the brake handle the regen kicks in; squeeze it a little more and you start to feel the disc brake grab. The level of regen is pre-set in the controller. Most controllers come from the factory with maximum regen set as default mode, which is ideal for most riders.
The Crystalyte has only one moving part (the center bearing), making it extremely reliable when ridden under normal cheap hotels in bangkok conditions. Only hot rodders will have a problem with the Crystalyte smoking, usually when they repeatedly exceed 2000 watts to the motor. Like most hub motors, the Crystalyte is sealed so that water and dirt cannot get in. Even if water or dirt does manage to make its way into the motor casing, it should not cause the motor to fail. Hot rodders have been known to drill holes in the Crystalyte casing (to aid cooling) and still run the motor off road with no problems.
air holes in cover. Many hotrodders are drilling holes in their cover so that heat can escape the motor. From what they report the Crystalyte continues to run strong this way even when riding off road in dirt and even in wet conditions. cheap hotels in bangkok They recommend putting some kind of corrosion spray on the motor like corrosion x if using this kind  of system.
oil cooling a small hole is drilled into the motor plate and a few pints of oil is poured into the motor. This allows for the motor to transfer heat quicker to the cover plates making for faster heat dissipation. Check out this endless sphere  thread for more info.
If you have not ridden an electric bike before, you will be amazed at the silence of the Crystalyte. It is nearly silent, but you can hear a low rumbling noise, especially at start up when tire and wind noise is not prevalent. The Crystalyte is slightly louder than the 9C motor when run at the same wattage, and about the same noise level of the geared BMC hub motor. cheap hotels in bangkok However the BMC has a more high-pitched whine where as opposed cheap hotels in bangkok to the Crystalyte cheap hotels in bangkok s low grumble.
The Crystalite definitely feels like a heavy motor, and the bike become rear heavy.  You really feel big bumps especially if running without rear suspension. The motor feels fairly silent and solid. Knowing how robust the motor is gives you confidence cheap hotels in bangkok when climbing steep or long grades.  The Crystalyte feels as if it is built for abuse so you don t have to be reluctant cheap hotels in bangkok about riding her hard.  I really miss the free wheeling effect of my BMC motor when riding the Crystalyte.
The Crystalyte motor is designed for speeds of up to or greater than 30 MPH. If you don’t need a 30 MPH E-bike, cheap hotels in bangkok you can go with a much lighter and cheaper solution. But if you are looking for big speed and maximum power, you should run a minimum of 48 volts and may even want to consider a 60 or 72 volt battery pack.
I have ridden with this motor on both 48 volts and 72 volts. At 48 volts / 40 amps (1900 watts) I had a fun E-bike with a top speed of around 30 MPH. At 72 volts/40 amps (2800 watts) cheap hotels in bangkok I had a 40 MPH speed machine.
Crystalyte sells various controllers cheap hotels in bangkok for this hub motor that are either sensored or sensorless and they have various amp limits. Generally the more mosfets the controller has, the more amperage the controller can put out.
If you are looking for the ultimate performance in an affordable controller, check out lyen.com, a San Francisco resident who is well-respected in the DIY community for modifying Infineon controllers from China for peak performance.
Once you have a controller and have decided on what voltage and amperage you would like to run, it s time to select or build a battery pack to fit your needs. We recommend some kind of lithium battery technology, either lifep04 or lipoly. Read our article on battery selection here .  It s absolutel critical that the battery pack you select is capable of putting out the amperage you ll need by reviewing both the pack s continuous and momentary or burst amp ratings. Continuous means exactly that, namely how much power you ll be needing at maximum throttle whe