Friction Light Generator ...?

Discussion in 'Electrical' started by inspectorcritic, Oct 14, 2016.

  1. Just got in from eBay friction light generator suppose to be 12 volt 6 watt piece of Shanghai sh*t again unless I have a bad ground not enough lumens to see to ride at night unless someone knows what the problem is. They must of never have sold one to a bicycle or they would have seen a major design flaw the nose cone is extended over an inch to where you cannot mount the thing on a verticle stem it would half to be facing down to the ground cuz it will not allow for horzontal clarance will I solve the chink-o problem by getting a strap of medal from Home Depo extended it but still not enough light for 6 watts unless you know what the problem is.
    I invision what I saw in Az a guy had a friction light generator took 3 pedals a masive effluence of light came on I was using a light generator from K-mart still 100% better that this Shanghia junk does anyone know of a good brand of light generator that puts out a lumenous beam. Againg I got to send the the Shanghia sh*t back with them doing the matematics of calculating return products to their sh*t out of a rejected dumpster for them to make a carrer out of f***ing international fraud. any solutions?
     

  2. KB_UK

    KB_UK Member

    "friction light generator"...?

    You mean a dynamo?

    I think this is user error.
     
  3. zippinaround

    zippinaround Active Member

    People have known those things are junk for a long time!! How many bikes do you see with them fitted? None because they suck , break easily and even when functioning properly will barely light an led haha
     
  4. KB_UK

    KB_UK Member

    Actually bike dynamos are excellent. You see them on 95% of bikes sold in Holland and Denmark as standard equipment.

    The reason they aren't common in the US or England is because those are markets that treat bikes like cheap toys, and are missing all the important stuff. So when people need to add lights it's easier to fit a small $3 battery light than to spend $90 on a good Dynamo lighting set that needs properly installing.

    Hell the price of a good dynamo is more than the cost of an American's typical wally world bike. Dutch people don't spend much less than $1000 usually for the whole thing because they know it's a vehicle not a toy.
     
    Last edited: Oct 14, 2016
    zippinaround likes this.
  5. If the Shanghia people would state what the mili amps or amps are might be able to correct it been on zootube some guys are converting them from whimp incadesects to LED flash lights so right now thinking Walmart saw a 6 volt LED flashlight looks about the same diameter size I can just pop it off and put it on what would be the LED tolerance could it hand double the voltage are they that sensetive can always take it back to the store screaming belly aching what piece of sh*t it all was.
    Also I hear 80% of the people who work in Copenhagen commute by bicycle.
     
  6. Also seen a new invention on tube a Magnic light runs on magnets looks like you could make one in the garage but they did not look very bright.
     
  7. I have got 4 magnetos maybe one has the third auxialry white wire on it got to find but if not can I hook up an auxialry wire to the blue wire or is that some other special magneto addition to the main magneto, then pop a 6 volt light into the socket? I have heard leaching off the magneto causes power loss and poor performance.
     
  8. zippinaround

    zippinaround Active Member

    yeah a good dynamo will work nicely i was referring to the 10dollar ones , i'm sure if you did some brainstorming could figure a small alternator or belt driven dynamo i don't like the friction idea what happens if you get a puncture ? i assume a quality setup won't get sandwiched between the rim and tyre ?


    if you have a white wire you can power about 4 leds off it , if you have spare magnetos then no worries if it burns out but i ran 4 on mine for about 3 months 2 white leds at front 2 red on the back , many have reported failures by from using the white wire but my guess is the lights they fitted were too powerful? just my expierience with using it.
     
    Last edited: Oct 18, 2016
  9. skyash

    skyash Active Member

    I have killed lots of dynamo s by pedaling to fast so a moto bike would kill it in a second .$10 7volt led light with battery eBay last a week then recharge lights up 5 blocks on hi beam comes with bike mount and head straps I have had it for 3 years now .no reason why you can't put more lights on the battery if you like
     
  10. KB_UK

    KB_UK Member

    If you don't like tyre friction there's also rollers you can get that use the brake surface of the rim. The best dynamos are hub dynamos because there's nothing to get hit or soaked with water, and the drag is a lot less too.

    I have a $10 dynamo set (dynamo, front light, back light, all mounting hardware) from china and the light it gives off is a bit better than what you can get out of battery lights, and that's with old fashioned bulbs front and rear. Dynamos make a lot of power, 3W at normal riding speed. So with a 2W LED front and 1W LED rear its incredibly bright.

    It was hard to fit right though because of the bad mounts it comes with, proper dynamos have a springloaded mount so there's always enough pressure on the tyre, and a lever so you can lift it off and fix flats, or just to turn the lights off. Another thing I don't like is if the bike is wet before you ride it can take about a mile for the dynamo to start working.

    Breaking dynamos by pedalling too fast... not sure I believe that one.
     
  11. skyash

    skyash Active Member

    Well my dynamo works and gets better the Faster I go till you go to fast and it burns out .and that's pedaling. 60kmh on my moto push bike would kill it ?.Every time I have had a dynamo thay stop working when I go to fast .I have never seen one on a 66cc probably because thay can't take the speed thay are made for slow speeds like 20kmh when you hit 30kmh it burns out . maybe you got a good one .but thay can't beet a $10 2000lum led .
     
  12. KB_UK

    KB_UK Member

    What is burning out? Dynamo coils, or bulbs? 30kmh is only 18 miles an hour, that's about my cruising speed on my race bike. I only get good light over 14mph so something must be really wrong with yours.
     
  13. skyash

    skyash Active Member

    The dynamo Burns out I must admit that all the dynamos I have tried have been old off old fashioned bikes and start working at walking speed by full speed its stuffed maybe New ones have gotten better .or your lucky that it starts at 20 so 30 40 wouldn't hurt yours .can you put up a pic
     
  14. KB_UK

    KB_UK Member

  15. skyash

    skyash Active Member

    When I find them thay work .but thay put a big load on very hard to pedal I didn't know I could lube them .that one you got looks cheapo but the lights look good just the front one you got looks like one I got that runs on 3 aaa battery's cost me $50 Australia. not very good at all fell apart from the vibration
     
  16. KB_UK

    KB_UK Member

    A properly set up dynamo doesn't make it much harder to pedal. About the same as between a mountain bike and a normal bike. I reckon you've been using seized up ones and that's why they're burning out.
     
  17. You call them Dynamos is that a brand name? I Just call them generators and they do defect on the cheap black ones the spin cap falls off you got to be sure to line it up just right horizontal to the wheel if diagnal it will burn off, found a magneto has white wire another option to the friction generator on the stock generator hs a 6 watt bulb went to an auto parts store found a 1156 is a 26 watt dont know the amperage of bulb or generator got figure out the ground clips because I took em off without shooting a picture the bulb is bigger wont fit through the porthole had to put it in the other side to get it to fit I'll be working on it today maybe tonight success I hope.
     
  18. KB_UK

    KB_UK Member

  19. skyash

    skyash Active Member

    Yeah that's what we call them.like iron man's enemy the living Dynamo lol
     
  20. KB_UK

    KB_UK Member

    You're never ever getting a 26 watt bulb to run off a dynamo. Try a 2.4 watt bulb.
     
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