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Q: How much power can a person produce?
A: Kids under 12 can put out 50 to 100 Watts of power for an hour. An adult who works out every day can put out between 100 and 150 Watts of power for an hour. Someone who is a competitive cycler can put out up to 500 Watts!!
Take a look at the test results info below for benchmarking information. This data was recorded using a WattsVIEW power monitor while charging a 12V Deep cycle Duracell Battery Powerpack during a one hour charging session. For more information see the FAQ WEBPAGE. If you want to buy a generator stand you don't have to put together then take a look HERE.
TEST RESULTS / BENCHMARKING RESULTS
FREE DIY BICYCLE GENERATOR PLANS
Do it yourself Bike Generator Wiring Kit for Charge Controller
|For this project you will need: |
1) 5 Feet Size 14 AWG Stranded in two different colors (Prefered Red and Black)
2) Crimp on fork connectors sold at most hardware stores - Shown below in blue
3) Crimp on but splices for lenthening the wires to the generator
4) Three row terminal block AKA "Barrier Strip" (the black things with the screws on them).
If you want to simplify, use this wiring kit shown below as shown in the video.
OR You can use twist cap wire connectors if you desire, not as reliable, but easy to use.
SCHEMATIC / WIRING DIAGRAM
SUGGESTED TOOLS & ACCESSORIES
|Digital Multimeter, this is very helpful to have!||$12.73||order|
|Wire Crimpers / Cutters||$19.93||order|
| Regular style fuse holder for cars. Get a 20 Amps or 15 Amp fuse from your local auto store.
FUSES - You can easily use a regular 20 Amp fuse from AutoZone or any other auto store, or you can use a thermal resettable fuse. The video instructions show a thermal fuse being used in Video #3 You can use either option. If you purchase the wiring kit you will receive the resettable fuse for your generator.
TERMS & CONDITIONS
GENERATOR TECHNICAL DISCUSSION
A typical person can get on a bicycle generator system and turn the generator at 2500 RPMS. If you were to put a volt meter on the generator while it was spinning at this rate, then you would see a DC voltage somewhere near 14 Volts (See White Line@ 2500 RPM). However, if you have a 5 Amp load on your generator, like the load from charging a battery or powering a light, then your voltage output would drop down to somewhere near 12.5 Volts (See the Red line@ 2500 RPM). This phenomena is sometimes called "Voltage Droop" or "IR Drop" This data is often displayed in the form of a "Load Line".
This information is significant because it helps understand how much faster you would have to pedal when delivering 100 Watts to a rechargeable lead acid battery. If the battery charge voltage is supposed to be at 14.8 Volts DC, and you plan on putting 100 Watts into the battery, then the amount of current from your pedal power bike generator would be : 100 / 14.8 = 6.7 Amps
So based on this information - you would need to pedal your generator at about 3,200 RPM. (Approximating the path of the red line off to the right of the graph you can guestimate about 3,200 RPM).
You electrical people may be looking at the data attempting to approximating internal armature resistance of the bicycle generator. For your convenience, that information is displayed below on the generator internal resistance graph.
For those of you not so technical - a generator with an internal resistance of zero Ohms is the ideal generator - which unfortunately does not exist, but is what many strive for. Internal resistance of a generator is bad because power is lost in the form of heat inside the generator.
One can see that the approximate resistance is about 0.35 ohms. This is a Permanent magnet DC motor working as a generator. It has a voltage rating of 24V with four poles. A two pole device would have more resistance & more power loss.