Set your Multi meter to AC volts as the current at this point is unconverted to DC via the Reg/Rect, Your should see a minimum of 38 volts for your model so set the meter above this amount. They should all be the same (E.g. Please be as detailed as possible in your explanation, I would really like to understand your design, since I'm struggling to design a voltage regulator circuit for permanent magnet motorcycle generator (the one used here). The cable coming off the stator will clearly have three wires (usually yellow, but not always) if you have a three-phase stator. reference voltage. The stock stator on all motorcycles generate AC voltage regardless of year, make or model … Over voltage output pala ang rectifier na nakabit ko kaya ibinalik ko na yung original. They are only called this to distinguish between other types of batteries. There is an output but its at 2.5V at idle, when reving higher it reaches a max of 5V output @5000 rpm (voltage regulator output to earth) If I measure the stator output i get at idle 35V on first coil, 8V on second. For charging it the charging-system should provide a voltage of about 14.4 Vdc and this should be a constant voltage at all engine-speeds.The generator itself is located in or on the engine, and on most bikes there is a separate regulator-rectifier unit located somewhere on the frame. Some models of heavy touring The regulator-rectifier internals need to be built so that the heat is transferred efficiently from the electronical components themselves to the housing of the unit, mostly equipped with cooling-fins. It has the advantage that the battery will charge, in spite of a bad connection, but has the disadvantage that the high-current leads can eventually burn out because of this, without the owner even noticing beforehand that there is a problem in the circuit.One thing to keep in mind is that the output-power provided by the stator-winding is delivered in between the phases. Say 13.5 volts. The stator coil is a coil (or a series of coils) that sits around the rotor. Counterside of this setup is the extra airgap between the fieldwinding and the claw-pole. For example a 32-amp stator should put out 18 volts AC (VAC) per each 1000-RPM. If the DC voltage across the battery with at 5000 rpm is about 14V, then the reg rect is fine. When the motorcycle’s engine is turning — i.e. The DR650’s alternator i… If you have a tach, maximum output is reached around 5,000 RPM. Like The Stator Papers suggest, just consider all of the stator output wires as yellow in color. Bar coiled stator: This is a compact stator with coils arranged and attached to a … With the bike running and and the stator disconnected, I have measured the AC voltage coming from the stator from all three pins. Then the stator is located inside a cover, as well as the field winding in the middle of it. Regulator rectifiers are commonly found as either 6 or 12 volts. The bridge rectifier converts the Stator temp above 20°C, less output. This is the most important bit in designing a regulator-rectifier for use in a permanent-magnet generator-setup.The regulator-part of the regulator-rectifier needs to measure the DC-voltage somewhere in the system. This means that the regulator is regulating the excessive voltage away At 3000 RPM it should be 54 VAC (18 X 3). So there is only power for the field when the ignition is turned on. At full throttle, some stators can produce up to 120 volts of electricity. At 3000 RPM it should be 54 VAC (18 X 3). I picked up this bike as a new project, engine runs well but I am getting zero AC voltage from the stator/rotor. Wondering what this motorcycle adventure travel gig is all about? Create a Battery-op Ignition System for Less Than $50: The cost of a new stator can be hundreds of dollars. Try measuring the voltage across the battery, with the engine running and all your lights and accessories turned on. Because the stator is producing power according to the engine-speed the stator-output is too high all the time. If the motorcycle uses more power than the stator can provide, the battery will start to drain. i use alligator clips, and it's safe that way. If needed, each of these components can be serviced separately. On this maintenance free system there is an extra airgap, so this system is less efficient.The Unit Field Controlled GeneratorThe last variant of this system is a car-type generator that is bolted onto the bike's engine as a single unit. In order for your battery to stay at its peak operating output for the next time you start your bike, it has to have some way to have voltage/amperage return back. You can usually see if it is by testing the output voltage. AC Phase Count. The other end of the winding supplies AC voltage to the rectifier section which converts it to DC voltage. Some bikes have single-phase designs because they cost less to manufacture, in which case there would be two wires rather than three. New stator but no AC voltage output at connector (1981 Honda CB900F) I picked up this bike as a new project, engine runs well but I am getting zero AC voltage from the stator/rotor. Check the AC voltage output of the stator. That’s 25% more juice than the wimpy 200 Watts pumped out by the DR650 stock alternator at its maximum of 5,000 RPM. These symptoms could also point to stator failure so check the coil resistances and or output voltage if your meter has an AC range, to eliminate this. That is the output of the stator not keeping up with just the stock headlight. When the voltage in the bike’s system reaches over 14.4 Vdc the regulator senses that and just switches the field off.Then the voltage will drop because the stator doesn’t produce any power anymore (there is no varying magnetic field). This is mostly because of the regulator and partly by the rectifier-diodes themselves that get hot just because of the current flowing through it. This is required on a motorcycle as the stator outputs AC electricity. Disconnect the stator plug with the 3 Yellow wires. I'm expecting the voltage at the battery to be at 14.1V or higher while running. The three-phase AC output from the stator-winding is led through a rectifier (inside the regulator-rectifier-unit) to convert it to DC for charging the battery.FIGURE 3: SWITCHED FIELDRegulation is done by the regulator-part of the regulator-rectifier. Dinala ko sa ibang Honda Service center pero di nila madiagnose kung alin talaga ang sira, yung stator or yung rectifier. The modern rectifier is a series of diodes that converts AC power to DC. Below are the stator output wires in my hand. Bad Stator Fix--Don't Buy a New Stator for Your Engine! Does it make a difference? Start the engine and read each pair of terminals in the same order as you did above, 1~2, 1~3, 2~3. A motorcycle voltage regulator should keep the voltage within 13.5v and 14.5v at any given engine RPM. If the AC voltage is not equal for all three outputs, or if it is below 60v AC, ... it means one of the phases of the multimeter has shorted out to ground and you need to replace your stator. A weak or dead battery is often the Will only power the Squadron Sport Polisport LED light: 2004-'09 KX250F: N/A: Aftermarket Stator : Aftermarket stator is needed. If a dead motorcycle battery causes a starting issue, we often assume the battery is faulty. stator output voltage that reading is good. It's not the voltage regulator. This airgap needs to be as small as possible, the smaller the airgap, the more efficient the generator works. ... Stator. Since the incandescent bulbs work well on AC voltage, there is no rectifier section in this type of regulator. One common misconception people believe is that a 12-volt battery is actually a 12-volt battery. ElectroSport launches its NEW website offering a modern online experience and simple navigation. When you apply battery-voltage across the sliprings, the rotor will behave like a big electromagnet, and the left-hand side of the rotor will be say a north-pole, then the right-hand side will be a south-pole. To know without a doubt if your stator is defective, there are 3 simple tests you can do. The output of a certain stator is depending on the engine-speed (the higher the speed of the magnetic-field variation, the higher the stator-output), and the force of the magnetic field (which is constant) Basically the stator produces a certain output at a certain rpm.Then the AC-current is led through the rectifier inside the regulator-rectifier-unit. Copyright ©2021 Baja Designs, Inc. All Rights Reserved, Ecommerce & ERP Integration by Website Pipeline™, Replacement stator (Only for bikes 1990-ON), Replacement stator (Only for bikes 1990-ON), Fuel injected will run Squadron (Pro & Sport) or Squadrron Sport Polisport LED light, Aftermarket stator is needed. Motorcycle alternator refers to a collection of components that includes the stator, but also includes magnets and a rectifier/regulator (devices that convert AC current to DC current and maintain steady output). Without a good stator, your engine will run poorly or not at all. And here we have the stator tucked inside the rotor. The circuit inside the unit regulates the AC voltage coming from the generator to 13.5 – 14 VAC for the bulbs. Electrical loads should be evaluated on their power .. how many watts it is. Motorcycle alternator refers to a collection of components that includes the stator, but also includes magnets and a rectifier/regulator (devices that convert AC current to DC current and maintain steady output). This was parked in the garage with the engine at idle. It can produce power for charging the battery even with the engine idling. The rotor is just a magnet connected to the crankshaft of the motorcycle. Set your meter to read AC (NOT DC) voltage on the 100+ volt scale. The stator is a metal core with a lot of metal poles that have windings of copper-wire on them. Rev the engine up to 3,000 rpm and read the meter. Your bike’s alternator stator coil produces AC voltage. What does all this mean? The important bit is the output voltage. January 30, 2018. It senses the voltage in the bike’selectrical system and when the voltage is lower than 14.4 Vdc it switches on the field (it switches a 12Vdc supply across the sliprings) Then there is a magnetic field, so the stator will produce power. … Well, if you connect the positive ohmmeter lead to where the power starts. The system itself works on the principles as a permanent magnet generator, the only big difference is that there are no permanent magnets but instead there is an electromagnet that provides the necessary magnetism. I understand it should have more on the order of 50V AC at idle and so I'm suspicious of the stator but all three wires being identical in The alternator or dynamo gives out a fixed voltage for the battery, ie 12v batt usually 14v output, if the battery is flat then it takes more current to get it upto charge,once it reaches charging the current drops off,there is a current limiter in the regulator. Counterside is that it is not as simple and small as a permanent magnet generator. The static stator test involves measuring from coil to coil — or phase to phase — within the stator, and also measuring from each coil/phase to ground. The majority of modern motorcycle alternators consist of thee separate pieces – a stator, rotor, and external voltage regulator. 1) Due to either broken wires or corroded connections, all three stator voltages are not getting to the rectifier/regulator. Regulation is done through the regulator-part of the regulator-rectifier by switching the ground for the field on or off. 20v/20v/20v). Flywheel bolts are tight (#2197) and stator is not nicked or physically damaged. Ohms Test. This solution completely bypasses the stator by using a 12 volt battery to power the ignition system. Uncategorized March 8, 2021 0 masuzi.
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