Starting Question

Discussion in 'General Questions' started by SlicerDicer, Jun 7, 2007.

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  1. SlicerDicer

    SlicerDicer Guest

    Here is a strange starting question. Freewheel cassette rear turns freely does not kick start when clutch released. I have no pull starter how do I start the engine?

    Please post ideas.. I cannot come up with any reasonable one at the moment other than a freewheel crankset but I really do not want to spend that much on a crankset. Not only that but I have no idea how to do a freewheel crankset.

  2. iRide Customs

    iRide Customs Member

    Are you talking about the freewheel on your pedals side or do you have a frewheeling sprocket on you engine drive??

  3. gone_fishin

    gone_fishin Guest

  4. SlicerDicer

    SlicerDicer Guest

    no no its a plan I am going to transfer the power from one side to the other. I am just thinking of how to start the bike.

    I will most likely remove the pedals from power as they would be useless. I would keep them there to allow for "look" but they would be non functional. I may eventually add a freewheel crank like this.

    If thats the only way to get it done it may take a bit.
  5. SlicerDicer

    SlicerDicer Guest

    I should note the main reason behind this is to be able to use the gearing ratio that will allow equal to somewhere around 58 tooth for starting/climbing hills. Then a 34 tooth for cruising.
  6. azbill

    azbill Active Member

    I think the only way to do that would be to disconect pedals
    other wise your legs are gonna be pumpin pretty fast !!!
  7. SlicerDicer

    SlicerDicer Guest

    az thats the problem once I disconnect the pedals how do I start the thing :razz:
  8. azbill

    azbill Active Member

    I think you are looking at a pull start with centrifugal clutch
    that and a jackshaft to transfer chain to right side of bike
  9. JosephGarcia

    JosephGarcia Guest

    you get a small park plug gap 0.015, then get on the bike, push it forward or off your driveway, or run and jump on and start the bike.

    same goes for stoplights.
  10. SlicerDicer

    SlicerDicer Guest

    but the problem joseph is the drive chain is going to be connected to a freewheeled cassette so it will just spin... It will not "pop start"

    EDIT: I spoke with Mike Simpson and he was extremely helpful brilliant guy! He was telling me about a pull start using a rope with a knot similar to the old briggs and stratton engines. This is the key to what I need to do :) Once I get it done I will post photos of it.
  11. SlicerDicer

    SlicerDicer Guest

    Here is what I did. [​IMG]

    I scored it with a drywall keyhole saw of all things. Anyway I just slightly scored it enough that its rough. I wrapped a rope around it. The rope does not need a knot it just wraps over itself once to hold the loose end in place then I can wrap it 4-5 times around give it a good yank and it spins the hell out of the hub. I can take a spoke "broken one" put it through the spoke holes and hold onto it and have another person pull the rope while I am preventing it from spinning. The rope will not budge on there at all so I have a pull starter without having to do much modification :)

    By the way the scores I did on are running in a spiral in one direction going left and the other direction going right. It adds a TON of grip to that rope and when I hit the end of the rope it just flys free! Hurray for pullstart indestructibility
  12. Guest

    Guest Guest


    Der, did I speel that right? :lol:
  13. srdavo

    srdavo Active Member

    I see how you can spin the hub. What's the hub gonna spin??
    I'm not seeing it :? :???:

    I need more info.....
  14. OldPete

    OldPete Guest

    Never use cotton rope for this type of pull start. Use nylon.

    Cotton rope has been known to break during a back fire, the engine starts, then the rope becomes a very fast whipping machine. Seen it happen once...not to me. :shock:
  15. SlicerDicer

    SlicerDicer Guest

    I already have a nylon rope with a flamed end sealed.. Cotton cannot be frayproofed this way :)

    Also there is no knot so it would just fly off anyway unless things went very wrong :) Usually things do though :)

    The hub is going to transfer the power from one side of the bike to the other it will have sprockets on both sides. By transferring the power to a rear cassette 7 speed YEAH!! I am planning on using all 7 btw.

    But the cassette will spin and will not popstart the bicycle. This leaves a problem where to start the bike or how. I spoke with Mike Simpson he told me about the plastic and metal used to make the starter that you can get and I agreed with him bad idea to be left without a usable starter.

    Mike then talked about the old starters on lawn mowers that was a cord you would wind around yank then put in pocket. I thought about it long and hard of how to make it so that hub would be able to have a notch for the knot as these older ones did and nothing came to mind on how to do it. So I thought about it a bit more and scoring it allowed for grip.

    So spinning that hub with a rope wrapped around the middle will turn the motor over and crank it. So think of it like this.

    Motor -> Sprocket -> Hub <- Sprocket <- Cassette

    All roads lead to the hub so by cranking that hub it will fire up the motor.

    That should help a bit more :D

    Much more info will come from this next week when I start building it. As of right now the mikes hard lemonade bike is destroyed. I parked it and disassembled it to prevent myself from being hurt. It had a good run of about 600 miles before it crappified out. A mess of the components on the bike were not very high quality.
  16. Herrmanator8

    Herrmanator8 Guest

    you are the 12th person in my life that ive told this to... first, trun on gas, pull throttle all the way back and hold it, tip bike all the way on its left side for approximately 2-3 seconds, then bring it back on, choke it, they give it a try, works on my dirtbike every time even on the coldest days. it allows gravity to pull the gas out of the carb and to go into the cylinder.

    Jon :grin:
  17. wildcat50

    wildcat50 Guest

    Hello everyone I am in need of help. I got my bike running once. Since then I get the bike pedaling but when i let out the clutch it sounds like its running but when I try and give it gas it just has a low rumble but doesn't do much when gas is applied and then dies out. I've tried it with the choke on and off. Its getting fuel. I have checked the spark plug and it looks fine. Im using the stock spark plug that came with it. Also its getting fuel because it started nicely once and also the bowl on the bottom of the carburetor is getting fuel... Any suggestions would be much appreciated, thanks!
  18. gone_fishin

    gone_fishin Guest

    check wiring:
    blue/green to blue/green (killswitch here)
    black to black
    white for light or capped off

    disconnect killswitch to troubleshoot a starting problem.

    also search: "idle" "killswitch" "spark plug gap"

    read the "happy time owner's manual" for basic info.
  19. 5-7HEAVEN

    5-7HEAVEN Guest

    Last edited by a moderator: Sep 2, 2007
  20. I say find a way to rig that freewheel so it's stiff when you initialy start your engine then with the clutch in,unstiff it. Maybe a rig from a three speed hub but instead of gears have that little lever stiffen then unstiffen when moved with a lever,maybe an old school 10 speed shifter lever.
    I remember back in the day before freewheel 20 inch rims were common and were pricey,coster brake rims were the norm and we made it freewheel by removing the brake items inside the hub. I'm sure with a little enginuety there would be some way to get that hub stiff enough to start that motor.