Kwietshee Posted March 13, 2006 Report Posted March 13, 2006 So heres the story guys, guy I got bike from said he got the stator "rewound".My question is how do I measure how many watts this stator can put out? Any help is appreciated, thanks. stator pic Quote
BigRed350x Posted March 13, 2006 Report Posted March 13, 2006 P = VA It's kinda tough to actually measure how much "wattage" your stator is capable of putting out, unless you just load the fucker up real good with lots of shit and see when it fails. You can measure it, but it takes some not-so-common equipment that pretty much no one would have unless they are a huge eletronics nerd. A simple volt/amp meter won't do what you want. There isn't really a way to measure how much it can physically put out, other than to do the math or load it and see when it fails. You can get the voltage output with your volt meter, then get the amperage draw of everything on your circuit and use the equation above to figure out the power required by each item in the circuit at that particular moment, but that won't tell you how much it is capable of putting out. Quote
1.6i Posted March 13, 2006 Report Posted March 13, 2006 dunno how to measure watts... but you could measure the resistance of the windings with a dvom then covert that with alittle math into watts.. Dont ask me how cause i hate math but it can be done... Quote
BigRed350x Posted March 13, 2006 Report Posted March 13, 2006 (edited) dunno how to measure watts... but you could measure the resistance of the windings with a dvom then covert that with alittle math into watts.. Dont ask me how cause i hate math but it can be done... 486007[/snapback] That won't work. You would only be measuring the resistance of the stator windings itself, that doesn't tell you much about how much power output it will produce. The conversion of Amps to Watts is governed by the equation Watts = Amps x Volts For example 1 amp * 110 volts = 110 watts This is only with the given rating of each item in your circuit. There is no way to tell what the maximum value of your stator will be, you can only take values from the circuit you already have and use 12v AC and the amperage draw from each item (lights, etc) to see how much DRAW it is putting on your stator at that particular moment. Here: http://physics.bu.edu/~duffy/PY106/Electricgenerators.html http://www.opamplabs.com/eirp.htm Keep in mind that this is for DC circuits. The laws are different for AC circuits like that of the banshee. An easier solution would be to ask whoever did your winding for you. They should know. If they can't give you a rough estimate, they shouldn't be winding a stator. Ask them. Edited March 13, 2006 by BigRed350x Quote
daryn c Posted March 13, 2006 Report Posted March 13, 2006 put your tounge on it , if your eyes light up then you got enough J/K! maybe a expensive voltage meter? Quote
Shee-Male Posted March 13, 2006 Report Posted March 13, 2006 P = VA It's kinda tough to actually measure how much "wattage" your stator is capable of putting out, unless you just load the fucker up real good with lots of shit and see when it fails. Quote
Kwietshee Posted March 13, 2006 Author Report Posted March 13, 2006 Thanks for the info . so the way i take it is to get some diff wattage lights and load the stator gradually until the lights dim real bad. or am I way off? Quote
odaen Posted March 13, 2006 Report Posted March 13, 2006 The best thing to do would be to ask who wound it. If that fails, ask Ricky Stator how they rate their stators, in terms of power rating, and see if you know enough about the new stator to calculate it. I wouldn't recommend trying to load your stator to find the rating. The armature wire that they are wound with has a very thin insulation on it to keep the wires as tight to each other as possible. If you try and pull too much current through the stator, the wire could heat, melting the insulation and shorting the winding at that spot to an adjacent winding. Additionally, loading the stator won't give you a safe continuous wattage estimate. Quote
Kwietshee Posted March 13, 2006 Author Report Posted March 13, 2006 well I guess its not really that important anyways.bike has 55 watt H3 headlights and im pretty happy with them so unless i want bigger lights I wont mess with it Again thanks for all the input Quote
BigRed350x Posted March 13, 2006 Report Posted March 13, 2006 Damn dude, is this what you do for a living proffesser? Thats some good info , although the "physics" link is a bit nerdy 486035[/snapback] I have a degree in computer engineering. Quote
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