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Thirstyman 03-06-08 01:08 AM

If I offended anyone with my satire I must be doing something right.:p[/QUOTE]

Only offended by your grammer and spelling.

Mr York 03-06-08 01:18 AM

You mean grammar right ;-)

oliverb 09-25-09 03:51 PM

I built this generator last winter. from plans off the net.

I got fed up with the regular power cuts we get. The generator is designed to keep my gas central heating boiler electrics running so I at least get some heat and hot water while the power is out. Can also be used for my laptop and internet too.

The inverter is powered from the battery and is topped up by the bike charger.

AEO 09-25-09 04:01 PM

hillcrawler 01-17-14 10:51 AM

If strava datas are anything to go by, a Professional cyclist can generate an average of 300-350W throughout a 200 km course. Sprinters like Greipel can peak out at 1.300-1.400w momentarily during a sprint.

Road Fan 01-17-14 11:42 AM


Originally Posted by Photosmith (Post 6108559)
100-200 watt/hour for an sustainable level, 500+ peak for very short bursts of 20 seconds to a few minutes depending on fitness level. This means if you cycled on your generator for a whopping two full hours at a nice 160 watt clip, you'd generate 0.32 kw/hour of electricity. You'd likely burn something like 1000 Calories in the process. I can imagine you'd spend at least a few dollars to eat enough food to replenish the 1000 Calories burned. On the other hand, here in Arizona electricity costs about 10 cents per kw/h, so you're looking at it costing you around 3.2 cents.

If you were thinking more of an off-grid setup, you can do a 160 watt/hour solar panel with inverter and battery backup and stuff for something like $1000 and have a generator that produces power for 4+ hours a day, plus battery backup, for no further investment. Humans really aren't very cost effective power generation stations.

I'd think a moving cyclist can produce more power on a sustained basis than a stationary one, based on available cooling. The body can't produce as much power when overheated as it can when well-cooled. Check out "Bicycling Science" by Wilson, published by MIT Press.

caloso 01-17-14 12:56 PM

Here is a data point. I am a 46 year old Cat 3. Currently my FTP (that is my 60' avg max power) is 275w and my absolute max is 1325w. These are pretty so-so numbers for racers.

fietsbob 01-17-14 03:13 PM

But can you power a 100 watt 110volt Load? running a dynamo generator,
to light a bulb like you have in your house?

davidad 01-17-14 04:14 PM

Eddy Merckx averaged about 469 watts for an hour when he set the record.

Winfried 01-18-14 07:57 PM


Originally Posted by BIG-E (Post 6107433)
I want to build a pedal powered generator. Does anyone know how many watts a good fit cyclist can produce? Both peak and steady.

Not nearly enough to get over peak oil.

"How much of a slave master am I?"

dwmckee 06-10-14 03:26 PM


Originally Posted by jeff-o (Post 6111974)
Which is why The Matrix made no sense to me. Just kill all the humans, and install ground source heat pumps everywhere.

Back on topic: yeah, 100-200W is about right. Considering the speeds you can reach with such a small amount of power (compared to a car), it makes a cyclist a very efficient mode of transport.

It might be better to install all of the ground heat pumps BEFORE you kill all of the people...

Tyler Torrey 01-23-16 08:20 PM

I am chubby at 5'11" and 207 pounds and I can sustain an average of 250 watts for an hour. I guess my legs are just naturally strong. Too bad I'm not naturally skinny.

chasm54 01-24-16 10:49 AM

dwmckee 01-24-16 11:07 PM


Originally Posted by DanteB (Post 6289267)
I did a double century last month and avg. 215 watts for 12:46. Last weekend's ride was 253 for just under 3 hours.

I am just curious, is that average while pedaling only. or does it include coasting time in the average?

gregf83 01-25-16 11:03 PM


Originally Posted by dwmckee (Post 18484289)
I am just curious, is that average while pedaling only. or does it include coasting time in the average?

You might need to wait another 8 years for an answer...

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