Reveeen
07-13-2009, 01:08 PM
As I posted elsewhere, I have bought a GIO 125cc Pit bike to disassemble, and re-power a Jawa moped.
At the moment the "plan" is engine and front forks (including wheel and disk brake), I am primarily concerned with these items, and am going to document disassembly here (in words, pictures are not necessary), maybe giving some tips to those who own/purchase these things.
Handle bars: My handle bars are bent, for no apparent reason, the box is/was intact. The throttle housing is made out of cheap plastic, for rough usage this should be replaced. The brake master: one screw loose, the other over tightened (some thread damage), a metric tap and die set will clean this up. The good stuff: there is a brake light switch. Same for the clutch lever assembly, one over tight, one loose.
The engine: Exhaust bolts at head, one tight, one loose (the loose one is the one hard to get at). Clutch cable very light weight, no more than a bicycle brake cable. Carb has a real goofy top fitting (on the cable), and bolts loose (on the engine). Chain: size 428, not much of a chain, gold plating flaking off, master link removable with my thumbnail. In the old days we used to cook a chain on a stove (in my mother's frying pan, full of wheel bearing grease, the grease melted going into the chain) if you can't afford a chain try this to get some life out of it, replace the master link. The engine sprocket is loose on the output shaft splines, probably should be replaced right out of the gate. The engine mounting bolts are a size too small (diameter), it would not hurt to replace them, at the very least make sure they are tight.
The forks: Pinch bolts have thread locker on them (good), the bearings have no grease (bad). The head bearings weren't adjusted, just tightened down until they could not be tightened any more (hammer, and punch, I could see the punch marks).
Other stuff: The wiring harness does not match the engine harness (colour wise). The exhaust pipe comes out of the head, then necks down to a smaller size, a "performance muffler" isn't going to help you here. There is a neutral light switch installed, but the wires are cut off, too short to patch. 2 out of 3 bolts on the mag side cover loose.
I *think* I got what I paid for. (meaning: I'm not unhappy, I wish the quality was a bit higher, but I don't feel cheated.
At the moment the "plan" is engine and front forks (including wheel and disk brake), I am primarily concerned with these items, and am going to document disassembly here (in words, pictures are not necessary), maybe giving some tips to those who own/purchase these things.
Handle bars: My handle bars are bent, for no apparent reason, the box is/was intact. The throttle housing is made out of cheap plastic, for rough usage this should be replaced. The brake master: one screw loose, the other over tightened (some thread damage), a metric tap and die set will clean this up. The good stuff: there is a brake light switch. Same for the clutch lever assembly, one over tight, one loose.
The engine: Exhaust bolts at head, one tight, one loose (the loose one is the one hard to get at). Clutch cable very light weight, no more than a bicycle brake cable. Carb has a real goofy top fitting (on the cable), and bolts loose (on the engine). Chain: size 428, not much of a chain, gold plating flaking off, master link removable with my thumbnail. In the old days we used to cook a chain on a stove (in my mother's frying pan, full of wheel bearing grease, the grease melted going into the chain) if you can't afford a chain try this to get some life out of it, replace the master link. The engine sprocket is loose on the output shaft splines, probably should be replaced right out of the gate. The engine mounting bolts are a size too small (diameter), it would not hurt to replace them, at the very least make sure they are tight.
The forks: Pinch bolts have thread locker on them (good), the bearings have no grease (bad). The head bearings weren't adjusted, just tightened down until they could not be tightened any more (hammer, and punch, I could see the punch marks).
Other stuff: The wiring harness does not match the engine harness (colour wise). The exhaust pipe comes out of the head, then necks down to a smaller size, a "performance muffler" isn't going to help you here. There is a neutral light switch installed, but the wires are cut off, too short to patch. 2 out of 3 bolts on the mag side cover loose.
I *think* I got what I paid for. (meaning: I'm not unhappy, I wish the quality was a bit higher, but I don't feel cheated.