It's been a few years now but I had finally managed to convince
my wife we needed an exercise bike .
After a couple of years of trying to figure out how to hook the alternator
up to it without dismantling it, I finally arrived at the solution by putting
a pedal sprocket on the
left side , I still have the original exercise
bike seat and all .
When I pedal the original still turns the front (wheel?) at a 1:8 ratio as I
pedal. The Display says I am going at a speed of 35mph
.
While I realize that the little rear wheel....if it was connected to the ground
is actually turning at 3.5 mph....an average walking speed.
The ECM has a *Razor (4?)wheel on the shaft with a 1:8 ratio to the crank pedal
shaft.......the ECM just sits there with its own weight almost keeping it there up
against the little solid rubber tire ( a kids toy !) with a straight solid drive (no
coaster brake) at a 60 rpm of the pedals the ECM spins at a leisure 480-500 rpm
which charges 12 volt batteries at 30watt/hrs.
the pics are below.
The red lines indicate where the stool and chain is to the rear wheel.
Oh....forgot to mention that I didn't care about the hard uncomfortable
seat .....so I sit on a nice comfortable bar stool instead ....I couldn't
work the hand levers that are also attached to the pedals.....so for upper
body workout I walk around and operate the hand levers......
I can tell you that at a 30Watt/hr rate just doing it that way I can only go
about 2 minutes.
BTW as original on the seat ....using both hand and foot exercise 100 Watt/hrs.
is quite easy to attain......(except for the uncomfortable seat ......(ewe....ouch....groan )
Norm.