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#101 2019-11-26 20:42:00

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 17,471

Re: Quadracycles

Something for the hybrid aspects of powering a vehicles movement
https://auto.howstuffworks.com/fuel-eff … r-cars.htm

They making of a solar toy might not seem to relate but the parts and process for any do it yourselfer.

lighter

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#102 2020-01-17 21:17:37

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 17,471

Re: Quadracycles

Pedaling is a low rpm that is for a large diameter pulley down to the small pulley that connects to the alternator. This make the rpm step up and while the size ration for the input that we give for pedaling is easy we still can get quite a few watts from doing so.

Automotive Alternators

Retrofitting a Car Alternator for Low-Speed Power Generation

Lots of good design stuff in the document. Data table for input to field coil circuit to the voltage that it can generate. The standard coil windings for the output coils are setup as a 3 phase spreading out of them around the stator air gap shell. The core finger are used to turn the coil field into alternating magnetic fields for the motion of the shaft to create ac in the stator coils. If you can get the unit appart you can rewire the coils to create the design that you want.

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#103 2020-01-17 21:57:32

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 17,471

Re: Quadracycles

This company makes AC k watt output products
https://www.whisperpower.com/US/4/7/pro … stems.html

https://www.mastervolt.com/all-you-need … egulators/

https://res.mdpi.com/d_attachment/energ … -00274.pdf
Development of Automotive Permanent Magnet Alternator with Fully Controlled AC/DC Converter

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#104 Yesterday 16:51:14

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 17,471

Re: Quadracycles

Repost of combination exercise to power information that might as well make use of that exercise energy to do something useful like in pumping water to compressing air or even making electricity.

6a00e0099229e8883301bb09c45c1d970d-800wi

6a00e0099229e8883301b8d280e543970c-800wi

So how much energy do we get depends on the person
power-potential-various-exercise-machines

POWER PRODUCTION
Lat Pulldown: 594W/612W
Leg press: 450W/360W
Low Row: 306W/270W
Chest Press: 270W/189W
Machine Fly: 234W/189W
Leg extension 207W/126W
Triceps extension 198W/234W
Shoulder press 135W/162W

ENERGY PRODUCTION
Lat Pulldown: 9,9Wh/10,2Wh
Leg press: 7,5Wh/6Wh
Low Row: 5,1Wh/4,5Wh
Chest Press: 4,5Wh/3,15Wh
Fly: 3,9Wh/3,15Wh
Leg extension 3,45Wh/2,1Wh
Triceps extension3,3Wh/3,9Wh
Shoulder press 2,25Wh/2,7Wh

ENDURANCE TRAINING
Stair stepper: 150 watt = 50 Wh in 20 minutes.
Rowing machine: 122 watt = 40.6 Wh in 20 minutes.
Cycling machine: 110 watt = 36.6 Wh in 20 minutes.
Crossfit: 50 watt = 16,.7 Wh in 20 minutes.
Steps: 35 watt = 11.7 Wh in 20 minutes.

Here is the current direction of Human powered devices which use the car alternator to generate power which is a high rpm device that at the low rpm rate is not going to generate the power levels we desire for a human powered vehicle as we need to power life support equipment while idle and not in motion.

Here is a bit more for that exercise group schedule
https://www.lowimpact.org/human-power-generation/

The key is not just making the energy but being able to store it for later use. The lowimpact page has lots of stuff to go for more topics on the right side bar of other stories.

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#105 Today 14:42:59

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 17,471

Re: Quadracycles

Calliban wrote:

The average human being is capable of producing sustained power of about 75 watts.  So as a bulk power source, this is not a sensible idea.  However, there are applications that require only small amounts of energy on an occasional basis.  Often, the cost of providing this small amount of power using batteries and grid charging connections is a high proportion of lifetime cost.  In those situations, human power is a good idea.

The simplicity of a human powered bicycle, makes it much more affordable than an electric scooter.  A gravity powered light, is a self contained device, which will last centuries without wearing out.  A torch can be charged by the movement of a human carrying it in his pocket.  A sewing machine can be peddle powered, etc.  There are many applications where small amounts of power can be provided by humans, eliminating a lot of complexity.  The brace is a human powered drill.  It is a much simpler device than an electric powered drill and much easier to make.
https://en.wikipedia.org/wiki/Brace_%28tool%29

Terraformer wrote:

Calliban,

Human powered vehicles would be even more effective if they were recumbent and had electric assist for hill climbing and acceleration. I think a reasonably fit adult should be able to maintain 20 mph quite easily with one? For getting around a town, that would be plenty. The biggest problem would be motor vehicles causing a safety risk, but if there's a shortage of oil that problem will disappear. Make them easy to store, rebuild our railway network, and we're good.

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#106 Today 14:48:21

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 17,471

Re: Quadracycles

But that power level is with alternators and not a permanent magnet low rpm generator design both of which are not what you have in an alternator designed piece of equipment. As the alternator needs high rpm in excess of 1,000 to 3,000 revolutions and requires the battery field connection to make the magnetic field for motion to be turned into an output voltage and current from the alternator.

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