Have an 80cc (so called) engine on a Huffy Cranbrook. Have logged about 250-300 miles just riding through the subdivision and terrorizing the neighbors.
Appx 1 month ago, all at once, the engine was running fine, but the bike was not going. Inspection revealed that the woodruff key had come out and was lodged inside the gear case in some excess grease. Hum.. wonder how it got out of the keyway??? Put it back in place, and about 5 miles later - came out again. Even tried cleaning the crankshaft & keyway, and using locktite. In about 3-5 miles - came out again. Latest episode, lasted about about 2 blocks.
Additional, maybe useless info: With woodruff key in slot/keyway and small gear in place, teeth on small gear stick out appx 1/8" past (toward gear case cover) the large gear/clutch's teeth. Also, you can see behind the small gear and about 1/8" the woodruff key and slot/keyway is not covered by the small gear, however, the recessed area in the front of the small gear (where the big-headed screw goes) is flush with the end of the crankshaft. So, it appears that the small gear is seating properly on the crankshaft.
OK, enough (or too much) words. It's obvious the key is coming out to the rear of the small gear. Anyone experienced a woodruff key problem like this?
Appx 1 month ago, all at once, the engine was running fine, but the bike was not going. Inspection revealed that the woodruff key had come out and was lodged inside the gear case in some excess grease. Hum.. wonder how it got out of the keyway??? Put it back in place, and about 5 miles later - came out again. Even tried cleaning the crankshaft & keyway, and using locktite. In about 3-5 miles - came out again. Latest episode, lasted about about 2 blocks.
Additional, maybe useless info: With woodruff key in slot/keyway and small gear in place, teeth on small gear stick out appx 1/8" past (toward gear case cover) the large gear/clutch's teeth. Also, you can see behind the small gear and about 1/8" the woodruff key and slot/keyway is not covered by the small gear, however, the recessed area in the front of the small gear (where the big-headed screw goes) is flush with the end of the crankshaft. So, it appears that the small gear is seating properly on the crankshaft.
OK, enough (or too much) words. It's obvious the key is coming out to the rear of the small gear. Anyone experienced a woodruff key problem like this?