skyhawk in frame tank racer build

Hi everyone, ive had this baby for about half a year now and finally decided to make a build thread for it. It was a tough job building a bicycle from scratch as it gives you many choices to pick from. As If the frame wasnt crazy enough, i went ahead and put mountain biking rated forks on the front with a disc brake, and had a hayday with fitting disc brakes on the rear, but i succeded with thousanths of an inch to spare. i shoved a racing 2 stroke motor in it with porting, high compression, a mikuni carb, and a racing exhaust. Ive invested some serious bread in this build because its my hobby and my toys bring me joy. I love to talk about my bike and could all day, as ive modified and replaced every part on the bike, even in the motor. Please ask questions, ill be posting pictures as i find them
 

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so i came out of work yesterday and discovered that my tire was flat, that was a fun walk home lol. after i had fixed that and was riding around, i went to a friends and had my exhaust muffler re attached. it makes it so much quiter now20150623_230657.jpg
 
ok, so its been a bit since i posted, and ive made a major modification to my motor.as always i got a few pics of the engine before, and after the mods, and a pic of in between when its just a mess of parts not a engine lol
i cant wait til my engine is broken in, i just stroked the motor and put new bearings it while i was at it. new bearings, new balanced crankshaft, new piston with rings, and a new jug. basically a while new top end, icant wait!!!!
 

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so i cant get my engine to run, i replaced the cdi and its getting spark. i also have a wet plug when i remove the plug. ive tried re sealing the head, bottom jug gasket, flipping my magnet, ive checked my fuel flow, i run a mikuni carb and its giving the engine fuel, and both of my crank seals are golden. im out of ideas and am getting frustrated, any ideas any one? id appreciate it so much u dont even know
 
You only need 3 things to run; fuel, spark & compression.

Any chance that key for the magnet is missing. Sounds like a timing issue, too much fuel or low compression. Any port work done to the jug (cylinder)?

Make sure the clutch is working properly as well.
 
my woodruff key is in the mag, my clutch is grabbing and successfully spinning the engine. yes the jug has very heavy port work done to it, but its professional. it might be a timing issue but idk how tdc has the mag on the loop and it sparks, im lost for once
 
the slot for the magnet could also be wallowed out, throwing timing off by a few degrees
 
I would make sure that you have good compression. You can try flip-flop the jug with a know good one if available. Hopefully, you flipped the magnet back over after you tried it the other way unsuccessfully. Most no starts go back to the basics. You can also try swapping the carb if you have a spare. Process of elimination always works, eventually.
 
so it turns out that i need a reed cage to run my engine, my engine has a piston with a window
 
no, im trying to find a better reed valve than the rock solid one, so not at the moment
 
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