My Build 80cc PowerKing

Discussion in 'Photos & Bicycle Builds' started by mslipac, Jan 3, 2009.

  1. mslipac

    mslipac Guest

    Well ordered PowerKing 80cc from zoombicycleengines.com
    it was on sale $145 + free shipping

    Got everything put together but kinda worried about the quality of this thing
    Casting is very rough and internals look very weak. Does anyone have a similar type engine with better quality or a different brand?

    Well will see how she holds up

    I adjusted the chain so I can delete the chain tensioner...I can get the fine adjustment on the chain with the rear axle.
     

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  2. spunout

    spunout Member


    welcome to the world of MB's...chinese motorkits kits are known for poor quality.

    casting is just about always rough. sometimes incomplete, where you can actually see the piston sleeve (nikasil liner, actually).

    inferior metals. these aren't even aluminum, they're ZINC!

    EDIT: where are my manners? sorry. nice-looking build, by the way! got rid of the chain tensioner...good for you.
     
    Last edited: Jan 4, 2009
  3. bluegoatwoods

    bluegoatwoods Well-Known Member

    A very good looking machine. You'll have fun.

    Your engine looks like any other happy time. they really are all the same. And they are not the Cadillac of bicycle engines. Yugo would be closer to the truth.

    But that doesn't mean that you're screwed at all. It's true that some people seem to do better with these engines than others. It might be because some of the engines are allright and some are lemons. But I don't know for sure that that's the answer; it might be that some people are better at handling these engines than others.

    But even that doesn't matter. They're so inexpensive that I'll just buy another when mine spills it's guts.

    good luck and have fun. You'll enjoy it.
     
  4. mslipac

    mslipac Guest

    well...got the bike fired up for the very fist time today temp in Edmonton, AB was +2 and I took the advantage...took me about 10 min of tying but got it going! I had to adjust the idle screw and chain tension but she runs perfect
     
  5. spunout

    spunout Member

    yaaay! good for you. :devilish:

    the virgin run is always fun. and scary, cuz you dont know what might break :ack2:

    when its that cold, if you cant store it indoors you'll have to learn what your motor wants, as far as choke settings during start-up.

    every motor is different. one motor coming off the line wants full-choke, the next might want only half, for example. i have a kingsmotorbikes 70cc, that refuses any choke, even in winter.

    canada, eh? you might start thinking 'bout some studded snow tires......
     
  6. mslipac

    mslipac Guest

    yaaay! good for you. :devilish:

    the virgin run is always fun. and scary, cuz you dont know what might break :ack2:

    when its that cold, if you cant store it indoors you'll have to learn what your motor wants, as far as choke settings during start-up.

    every motor is different. one motor coming off the line wants full-choke, the next might want only half, for example. i have a kingsmotorbikes 70cc, that refuses any choke, even in winter.

    no need I have plan "B" for that
     

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  7. wheelbender6

    wheelbender6 Well-Known Member

    These engines run well but the cosmetic machining is lower quality than you would expect. My motorized MTB is similar so I may try to shorten the chain and eliminate the tensioner. Cheers
     
  8. cyberwalt

    cyberwalt New Member

    pk 80

    ive had my pk 80 for three months now, when it runs it runs great, but two things very important, 1.seal the magnito case, where the wires come out of the engine and open it anytime your in rain or snow to make sure it dont get wet or she will short, trust me im on my 3rd mag in 3 months,2. Be very carful as to not overtighten bolt and studs thell strip vry easy specially if there warm. other then that i think if u look after them right they will last. good luck& happy trails.
     
  9. Mountainman

    Mountainman Active Member

    only one THING left to do

    nice looking MB that you have there

    no reason to worry at this time

    only one THING left to do

    ride that THING
     
  10. mslipac

    mslipac Guest

    what is the best sealant to use on the magneto cover and wire harnes to help with moisture entering...do I need to seal in the CDI at all? I installed plastic fenders the other day to help with splashing and got a front fork with shocks (omni) for it.
     
  11. Mountainman

    Mountainman Active Member

    have found it pays to buy the best

    here in our town GE brand sealants cost the most
    and have been proven by far to be the best

    as far as holding up to your engine heat
    not sure
    may wish to visit your local auto parts store
    they should have many sealants to chose from

    have fun as you ride that THING
     
  12. cyberwalt

    cyberwalt New Member

    i just used some permatex gasket black, but pretty much any rtv silcone. i also sealed wear the wires go in and out. couple of days ago i noticed the top lip of cdi used to have some kind of seal well it cracked off, cause of the cold and vibration i think so it might be a good idea to seal that too.
     
  13. cspaur13

    cspaur13 Member

    i noticed he has the wires right up against the exhaust. is there any worry there cause i know it gets pretty hot after a good run.
     
  14. mslipac

    mslipac Guest

    since than I have soldered all of the connections and shring tubed everything and I used some of that ribbed wire tubing to hold eveything together away from heat...should be a ok now
     
  15. brendonv

    brendonv Member

    yeh i soldered and heatshrinked mine as well. Then i zip tied the wires out of the way from the muffler. Make sure ur killswitch is hooked up correctly, not how the book says it as its wrong. Here's a video i made a while ago of how to wire it.

    http://au.youtube.com/watch?v=O9s7CuGHnD8

    Have fun with your mb!
    From Brendon.v
     

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