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Build Your Own 150W Pedal Power Bicycle Generator Stand

 

 

 





























 

STEP 7 -  (~10 minutes) -  DIY Install generator spring supports

DIY- bike generator kit spring supports step 10

 

 

Step

STEP 7 -  (~10 minutes) -  DIY Install generator spring supports

a Set the pedal power bike generator in its normal upright position
b You need the following pieces of hardware for this step:

 

Description Qty
Carriage bolt: Length 4", thread size 1/4, threads per inch (TPI) = 20 2
4 nuts matching the same parameters as above 4
Springs  2 3/8" length, 1/2" outside diameter. 2

You can get these here

c Install these parts as shown above with about a 3/4" gap at the bottom of the carriage bolt. 
d WARNING: if you apply too much upward pressure, the robber roller will wear out too fast and the amount of friction will waste energy.   The way to optimize this is to back the springs down little by little until your tire starts to slip while pedaling.  Then adjust the spring tension up a couple of turns. 
e I realized after taking this picture that this step should include putting on lock nuts so these nuts don't move up and down while pedaling.  You can add them if you want to.

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