Hi new to motorised bikes -need tips

Discussion in 'Introduce Yourself' started by BAZZA614, Mar 6, 2013.

  1. BAZZA614

    BAZZA614 Member

    Hi I'm very new to motorised bikes and you might be able to see that I'm only 12 years of age nearly 13 in August. I put the kit together by my self as who I live with don't know much about Motorised bikes. I took the cylinder wall off (not knowing the consequences) and snapped my piston rings. I bought another 2 and trying to put them on snapped them again and dropped half of a piston ring into the crank shaft. Anyway left it and got 2 more piston rings. I Put them on successfully and got the rest of the bike finished. After 20 minutes I got the thing to finally start it went great making sure I didn't go over 20 kph. The petrol mixture was 16:1 and now I have quite a bit of oil in my exhaust pipe. Today I went to ride it and I had to peddle alot to get it started just like last time but it was worse. Finally got it start but had hardly any power. I heard clicking noises (broken piston rings move inside crankshaft) then it's cut out and came to a sliding halt. My knee touched the motor and it was burning hot ,so hot when my knee rubbed against the motor I could hear it sizzle my skin. Any help would be appreciated on anything and help on how to get the old piston rings out of crankshaft area (without taking the motor apart) would be greatful. Also I have changed the spark plug as thatnwas gonsikis(broken).
    Last edited: Mar 6, 2013

  2. Fabian

    Fabian Well-Known Member

    Your engine will be a complete mess - there isn't any nice way of saying it.
    Better to just buy a new replacement engine because if you try and fix the engine, using methods that caused the stuff-up in the first place, the outcome will be nothing less than a hugely spectacular stuff-up; not even recreatable by a Mythbusters team effort.
  3. V 35

    V 35 Member

    Education is expensive, be glad you screwed up a $ 100 China Girl, not a many thousand dollar complex motorcycle engine !

    Even though your engine is busted, it's not junk. Pull it apart ' alien autopsy ' style and marvel at your new parts collection,
    covers, mag, clutch . The knowledge and parts gained will take the sting out of replacement. Know any Dirt Bike Guys ? They should know all about 2 cycle top end jobs. Muffler Shops can be a good source for welding brackets, and ' persuading ' tubing into place.
  4. Fabian

    Fabian Well-Known Member

    I agree, he will have a new parts collection but the process of pulling the engine apart without any knowledge of how to do so in a planned and methodical manner (and without suitable tools) will make it nothing more than a "scrap metal parts collection"
  5. Fabian

    Fabian Well-Known Member

    There is no way of putting a sugar coated spin on this.
    If any salvageable parts can be saved, they will soon take on all the qualities of scrap metal (it's a certainty); just give it a little time with a hammer and flat blade screw driver for predictable results.
  6. BAZZA614

    BAZZA614 Member

    Hi everyone thanks for being honest and every thing I took the motor off qand cylinder wall carbe and exhaust.believe it or not the broken half of the piston fell out (after moving piston around). I also found that the piston smashed a bit of the wall. If i was to get a new piston wall, would I get it up and running?
    Last edited: Mar 7, 2013
  7. BAZZA614

    BAZZA614 Member

    Can anyone tell me why the motor was so hot and why there was so much oil in the exhaust? Thanks in advance
  8. Fabian

    Fabian Well-Known Member

    Short and sweet: just buy a replacement engine, bolt it in place and be done with it.

    By asking the questions you are asking in your previous post means that the above sentence will be the best course for the least amount of trouble.
    From this point forward, the best method of education is the Socratic method. Study the information in the links below and you will be able to answer your own questions:







    turn your monitor 90 degrees for this one:

  9. jaguar

    jaguar Well-Known Member

    I say as long as the cylinder above the exhaust port isn't gouged then clean it up and use it!
    If the cylinder is gouged (grooved) then just buy a replacement cylinder.
    If the piston is broken then replace it.
    I have used grease on the flywheels, rotated them, for the loose stuff in the crankcase to come out.
    Also I have taken the engine off, taken the whole thing off the bike, then poured gasoline into the crank/flywheel area, rotated the crank if at all possible, and then poured it out into a pan so I could see if anything came out.
    You are quite the small mechanic attempting this kind of repair at such a young age. Keep it up and you'll be an incredible mechanic when older!
    BAZZA614 likes this.
  10. BigBlue

    BigBlue Active Member

    You learned a valuable lesson - If it ain't broken - leave it alone! We've all done it at one time or another.

    Good Luck,

    AKA: BigBlue
    BAZZA614 likes this.
  11. geebt48cc

    geebt48cc Member

    So very true bigblue!!!!!!!!!!~
  12. Fabian

    Fabian Well-Known Member

    The OP's original post reminds me of this story, and it's chillingly close to the bone:



    Pull up to Jiffy Lube when the mileage reaches 3000 since the last oil change.
    Drink a cup of coffee.
    15 minutes later, write a check and leave with a properly maintained vehicle.


    Go to O'Reilly auto parts and write a check for 50 dollars for oil, filter, oil lift (AKA kitty litter), hand cleaner and scented tree.
    Discover that the used oil container is full. Instead of taking it back to O'Reilly to recycle, dump in hole in back yard.
    Open a beer and drink it.

    Jack car up. Spend 30 minutes looking for jack stands.
    Find jack stands under kid's pedal car.
    In frustration, open another beer and drink it.
    Place drain pan under engine.
    Look for 9/16 box end wrench.
    Give up and use crescent wrench.
    Unscrew drain plug.
    Drop drain plug in pan of hot oil; get hot oil on you in process.
    Clean up.
    Have another beer while oil is draining.
    Look for oil filter wrench.
    Give up; poke oil filter with Phillips screwdriver and twist it off.
    Buddy shows up; finish case with him. Finish oil change tomorrow.
    Next day, drag pan full of old oil out from underneath car.
    Throw oil lift (AKA kitty litter) on oil spilled during step 18.
    Beer. No, drank it all yesterday.
    Walk to 7-11; buy beer.
    Install new oil filter making sure to apply thin coat of clean oil to gasket first.
    Dump first quart of fresh oil into engine.
    Remember drain plug from step 11.
    Hurry to find drain plug in drain pan.
    Hurry to replace drain plug before the whole quart of fresh oil drains onto floor.
    Slip with wrench and bang knuckles on frame.
    Bang head on floor board in reaction.
    Begin cussing fit.
    Throw wrench.
    Cuss for additional 10 minutes because wrench hit Miss December(1992) in the left boob.
    Clean up; apply Band-Aid to knuckle.
    Dump in additional 4 quarts of oil.
    Lower car from jack stands.
    Accidentally crush one of the jack stands.
    Move car back to apply more oil lift (AKA kitty litter) to fresh oil spilled during step 23.

    Finally you get to drive the car and you know that it's been done right because you've done it yourself !!!
  13. BAZZA614

    BAZZA614 Member

    Thanks jaguar ill give it a try. I'm very good with cars and I've got a job lined up. For me already. It's a nice comment.
  14. Fabian

    Fabian Well-Known Member

    When you start your new job, just remember that a left hand screw driver and a right hand screw driver work just as good on any kind of screw.
    Make sure to tell the senior mechanic to give you his right handed paycheck if he tells you to get him a left hand screw driver :devilish:
    BAZZA614 likes this.
  15. KCvale

    KCvale Motorized Bicycle Vendor

    I guess everyone but me missed the most important thing about this whole topic here, this a grade school kid.

    Bazz, not only are motorized bikes not a toy you have absolutely no business being out on the roadway on one!
    I know you think you 'know it all' when it comes to operating anything in traffic but every state in the US I know of says 16 years old for a reason, you are at least exposed to what it really takes to operate anything on roadway.

    Look son, your incompetence putting it together only cost you some money, that same immature attention to details will cost you massive injuries or even death on the roadways.

    Please kid, I beg you, get into sports or some other activity and enjoy being a kid, the time will come when you can play on the road with a motor but in my opinion trying to pursue this any further will be the biggest mistake if not the last of your young life and I for one won't give you a single tip for how to pursue it.
  16. geebt48cc

    geebt48cc Member

    Guys, I appreciate what Jag was saying to BAZZ, and that's true. You ever heard of someone beating a dead horse? Anyway................It's not going to get up. You have to deal with the present situation here, and realize probabilities!!!!!!!!!!!!!!
    Last edited: Mar 8, 2013
  17. roughrider

    roughrider Member

    Bah, humbug. Any kid with the smarts to know he should not have left those pieces in the crankcase and the thoughtfulness to report it is one heck of sharp cat. Good on you, BAZZ. I'll bet by the time you are sixteen, you'll be stomping other riders and building hot motors.

    That being said, in agreement with KC, please don't kill yourself learning. Hook up with some good riders, and listen to their advice. They can save your ass.

    Last edited: Mar 8, 2013
    BAZZA614 likes this.
  18. BAZZA614

    BAZZA614 Member

    Thank you so much, I know people say you have to be careful at a younger age but what they dont think is what the outcome could be e.g. (i don't want to sound like I have a big head)if I study cars now I could study more when im older and could possibly make a car that would change the world.
    Last edited: Mar 9, 2013
  19. grinningremlin

    grinningremlin Active Member

    No offense KCVale, but it's the maturity of the mind, not the age of the kid.Sports are very likely to get you busted up as well (though little chances of fingers chopped off).He sounds plenty intelligent to me, just "new" at it, which all of us were at one time.My father drove a tractor with combine at the age of 10, he drove the pickup on the roads at 12.I knew a kid that was into the chemistry set in elementary, and he was well versed in proportions.I've seen a jr.high made DIY laser that would burn through a piece of 1/4" plywood.Laws are applied to everyone, but are not made with everyone's intelligence level in mind, they're made to the lowest common denominator of us.
    BAZZA614, be careful, have fun, watch out for the popo (when riding), and I suggest a friction drive (with a good engine) to start.
    BAZZA614 likes this.
  20. KCvale

    KCvale Motorized Bicycle Vendor

    Actually having worked from home so I was there in that between school and when his mom got home time for my son who is now 23 and he ended up pretty unscaved because I was there to stop the idiotic things he wanted to try I know exactly what the outcome could be for a grade school kid bombing around on the roadway on an MB with his head in the clouds.

    I'll just leave you and this topic with this and know I at least tried to discourage you like I have done every kid I wouldn't sell an MB to.

    You could be a world class dirt bike rider in the 12 year old class that knows the machine inside and out and never wreck, it is a different world out on the road that will hurt you, it is your still medically proven under developed and vulnerable brain and complete lack of the 'traffic reality' that comes from experience that will get you.

    You will learn just how scary it is when you are 15 1/2 and can get a learners permit and actually drive on the roadway after Drivers Ed class, and that is in a car, until you get some first hand knowledge your more developed brain can take in and retain you will be screwed by another motorist because your essentially invisible to them to start with and even a good full helmet isn't going to protect your still fragile brain from the shock impact.

    Develop the next new transportation technology? I would love to see you do it, but take a hard spill and you may be spending the rest of your life just trying to develop a way to feed yourself.
    Do you really want to risk that all to real if not inevitable possibility?

    I'm done, I just hope you are smart enough to consider my words and wait a few years.