Advertise on Bikeforums.net



User Tag List

Page 2 of 2 FirstFirst 12
Results 26 to 40 of 40
  1. #26
    Senior Member
    Join Date
    May 2007
    Location
    New York metro area
    Posts
    458
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    If I offended anyone with my satire I must be doing something right.[/QUOTE]

    Only offended by your grammer and spelling.

  2. #27
    Senior Member Mr York's Avatar
    Join Date
    Feb 2008
    Posts
    197
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You mean grammar right ;-)

  3. #28
    Junior Member
    Join Date
    Sep 2009
    Posts
    7
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I built this generator last winter. http://www.brettoliver.org.uk/bicycle_generator.htm 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.

  4. #29
    AEO
    AEO is offline
    Senior Member AEO's Avatar
    Join Date
    Jun 2007
    Location
    A Coffin Called Earth. or Toronto, ON
    My Bikes
    Bianchi, Miyata, Dahon, Rossin
    Posts
    12,258
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
    http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

  5. #30
    Senior Member hillcrawler's Avatar
    Join Date
    Jun 2012
    Location
    Turkiye
    Posts
    346
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    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.
    Last edited by hillcrawler; 01-17-14 at 12:51 PM.
    http://www.strava.com/athletes/924895

  6. #31
    Senior Member Road Fan's Avatar
    Join Date
    Apr 2005
    Location
    Ann Arbor, MI
    Posts
    12,126
    Mentioned
    21 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Photosmith View Post
    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.

  7. #32
    Packfodding 3 caloso's Avatar
    Join Date
    Jul 2002
    Location
    Sacramento, California, USA
    My Bikes
    Ridley Excalibur, Gazelle Champion Mondial, On-One Pompino, Specialized Rock Hopper
    Posts
    33,209
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    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.
    Cyclists of the world, unite! You have nothing to lube but your chains!

  8. #33
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    16,654
    Mentioned
    111 Post(s)
    Tagged
    0 Thread(s)
    But can you power a 100 watt 110volt Load? running a dynamo generator,
    to light a bulb like you have in your house?

  9. #34
    Senior Member
    Join Date
    Feb 2009
    Posts
    4,754
    Mentioned
    15 Post(s)
    Tagged
    0 Thread(s)
    Eddy Merckx averaged about 469 watts for an hour when he set the record.

  10. #35
    Senior Member Winfried's Avatar
    Join Date
    Aug 2011
    Location
    Paris, France
    Posts
    1,116
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by BIG-E View Post
    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?"
    http://www.manicore.com/anglais/docu..._a/slaves.html

  11. #36
    Senior Member dwmckee's Avatar
    Join Date
    Jun 2008
    Location
    Pittsburgh, PA
    My Bikes
    Co-Motion Cappuccino Tandem, Jamis Xenith Race,'88 Bob Jackson Touring Bike (I love this one best), Co-Motion Cascadia Touring Bike, Salsa Fargo, Burley TAB
    Posts
    1,393
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by jeff-o View Post
    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...

  12. #37
    Newbie
    Join Date
    Jan 2016
    Posts
    1
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    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.

  13. #38
    Banned.
    Join Date
    May 2010
    Location
    Uncertain
    Posts
    8,661
    Mentioned
    83 Post(s)
    Tagged
    0 Thread(s)

  14. #39
    Senior Member dwmckee's Avatar
    Join Date
    Jun 2008
    Location
    Pittsburgh, PA
    My Bikes
    Co-Motion Cappuccino Tandem, Jamis Xenith Race,'88 Bob Jackson Touring Bike (I love this one best), Co-Motion Cascadia Touring Bike, Salsa Fargo, Burley TAB
    Posts
    1,393
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by DanteB View Post
    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?

  15. #40
    Senior Member
    Join Date
    Jun 2008
    Location
    Vancouver, BC
    Posts
    7,007
    Mentioned
    13 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by dwmckee View Post
    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...

Page 2 of 2 FirstFirst 12

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •