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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

VOLTS / AMPS

WATTS

WATT HOURS

AMP HOURS

CALORIES

 

 

FREE DIY BICYCLE GENERATOR PLANS

 

 

 

PARTS

 

item

Instructions Info Amazon
1 600 Watt Duracell Battery Powerpack $115   learn more order
2 300 Watt DC Generator $199 video learn more  order
3 Adjustable V-belt (Order 1 for kids bike,  2 for adult bike 26" wheel) $99
video order 
4 12V  Charge Controller $115 video  learn more order
5 Aluminum Adapter Plate - video DIY plans -
6 Bike Trainer Exercise Stand $99 video  learn more  order
7 Blocking Diode $89 video  learn more  order
8 Terminal Blocks Thermal Fuse & Wiring Kit for charge controller $49 video

 learn more

order

9

OPTIONAL - WattsVIEW Power Monitor for windows or MAC computer

$249
    order

 

 

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

In order for you to use this wire kit, you will need to get a set of wire strippers and wire crimpers.

OR  You can use twist cap wire connectors if you desire,  not as reliable, but easy to use. 

[ENLARGE]

Do it yourself Bike Generator Wiring Kit

Wiring Parts

              

SCHEMATIC / WIRING DIAGRAM

 

[ENLARGE]

 

 

 

 

 

 

 

 

 

 

 

 

SUGGESTED TOOLS & ACCESSORIES

Description     PayPal Amazon
Digital Multimeter,  this is very helpful to have! $12.73    order
Wire Crimpers / Cutters $19.93   order
Wire Strippers $12.80      order
TIRE LEVERS $5.00   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. 

$3.51 Bussmann BP/HHD ATC Fuse Holder    Order

 

 

 

 

 

 

Use these free videos and plans to make your own pedal power bicycle generator station.  Good for powering up your television or charging a battery or powering CFL /  LED lights .  Great source of emergency survival power and an alternative green energy source. 

 

 

Specifications

Dynamo Model

ASE-300-DC

Output Voltage Range

0 to 40 Volts DC

Nominal Current Rating

15 Amps

Peak Current Rating

20 Amps

Peak Power Output: 

(Charging 12V Battery )

300 Watts (15V X 20 Amps)

Drive Type

2" Diameter Pulley

Peak Operating Temperature

100 Degrees C

Cooling Method

Air Cooled

Shaft Bearing Type

Ball Bearing

Mounting Bolt Size

6 mm

Wire Lead Length

~12"

Wire Lead Size

Size 12 AWG

Approx Weight

~8 Lbs

Number of Poles (Brushes)

4

Generator Type

This is a DC permanent magnet motor

being used as a generator.

Peak to Peak Voltage

Varies depending on RPMs

(See this Output Waveform)

Voltage Output Vs. RPM

Voltage Curve Graph

Rated Operating Speed

2800 RPMs

Internal Resistance

0.35 Ohms

(See Resistance Graph)

Typical Amp Hours during 1 hour of use ~6  @12V
Typical Amp Hours during 1 hour of use 100 Watt Hours (0.1 KWH)

 

Voltage Output Graph

In the most basic of terms, a bicycle generator creates a potential energy when you move the pedals on your bicycle.   The potential energy is measured in terms of "Volts".  The faster you pedal on your bicycle, the higher the Voltage reading from your generator.   If you want to see a video demonstration of how this works the go to http://www.youtube.com/watch?v=mCI_Ke1tA4o

 

A "no load" condition is when you have nothing hooked up to your generator.  It also means that you have have ZERO Amps of current flowing from you bike generator.    While pedaling your bicycle generator in a no load condition, you will notice that you feel no resistance to your efforts,  so you will be able to sit there for hours without breaking a sweat.  

 

The amount of power from your generator is measured in terms of "Watts".   The formula for Watts is  Volts X Amps.   So in a no load condition with you pedaling the generator at 2000 RPM, you will be putting out 12 Volts X 0 Amps = ZERO Watts.

 

If you were to connect a load to your generator such as a Duracell lead acid rechargeable battery powerpack or a light bulb, then you would suddenly feel a resistance to your pedaling and you would begin to sweat.   If you use something called a DMM or digital multi meter, you can measure the Volts and Amps from your bike generator and then calculate how many Watts you are putting out.   For more information see the FAQ

 

If you are a non technical person, then please skip this section below.  It's for geeks.

bicycle generator voltage output vs rpm for varying loads 5 amps and 10 amps

 

The data displayed on the above chart shows you three test case scenarios where the bicycle generator load is varied from zero, to five, and then 10 Amps of current.   For a more in depth discussion on generator theory click here

 

 

 

 

 

 

 

               

 

 

 

 

 

                 TERMS & CONDITIONS                                                

  1. By following these FREE DIY BYO plans you agree to not operate this pedal power generator around small children or any individual who might stick their fingers in the wheel, chain, sprocket, or belt while it is moving.

  2. You also agree not to allow anyone near this bike generator with long hair or loose clothing that could possibly get it stuck and pulled in to the belt / chain / wheel assembly while being operated and cause injury or death.

  3. Also, By following these DIY STEPs, you assume all liability and responsibility for owning and operating you own pedal power bicycle generator.  You also agree to have a licensed electrician check over your assembled unit to make sure you have not wired up something up incorrectly BEFORE you hook it up to any kind of high power devices such as battery packs or lead acid batteries.  Also, before you charge a Powerpack with your pedal power bicycle generator, you will read and understand the safety section of the owner's manual. 

  4. You also agree to send me a photo of your final project to share with others on this web page.

 

 

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". 

 

bicycle generator voltage output vs rpm for varying loads 5 amps and 10 amps

 

 

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.

 

 Chart Graph Plot of Bicycle Generator Internal armature resistance 4 pole