KeepOnKeepnOn
New Member
- Local time
- 10:09 AM
- Joined
- Nov 28, 2007
- Messages
- 19
I built my motorbike about 4 years ago. Went with a 4 stroke and modified the intake as well as exhaust with the top priority being to make it quiet. When I fired it up for the first time I was stoked on the stealthiness... then I took it out for a ride and the gear box screamed like a banshee. I tried greasing it all up, filled it with 90 wt, even built a closed cell foam cover for it but it was way too loud. So I threw it in the corner of the garage and it has sat ever since.
Recently my interest in motor biking has been renewed and I tore off the gear box, breaking the outer cover in the process. The clutch shoe had a deep gouge in one and a lesser gouge in another, the third had a tall lip on it. Factory direct crapola. I'm not sure if it was the clutch or the gears making all that noise but either way, I'm done with that set up.
Since then the 4g and the EZM have come out. Some cheap Chinese 18" rear wheel sheaves have come on the market as well. I want to go all belts to make it as quiet as possible but still gas powered.
Question #1. Will the 4G bolt right up where my old gear box was? The motor is a Hua Sheng 49cc, the only identifying stamp I could find was on the block under the clutch "142F". The shaft is keyed and I measure it as machined down to 9/16 on most of the exposed area and 11/16 closer to the engine... do we call that a "5/8 keyed shaft"? Its definitely not tapered, is there just the two types, tapered and keyed?
Question #2 Any recommendations on what size and where to get the pulley to replace the 11t sprocket and belt I will need to join the tranny to the rear wheel sheave?
Thanks for the help
Recently my interest in motor biking has been renewed and I tore off the gear box, breaking the outer cover in the process. The clutch shoe had a deep gouge in one and a lesser gouge in another, the third had a tall lip on it. Factory direct crapola. I'm not sure if it was the clutch or the gears making all that noise but either way, I'm done with that set up.
Since then the 4g and the EZM have come out. Some cheap Chinese 18" rear wheel sheaves have come on the market as well. I want to go all belts to make it as quiet as possible but still gas powered.
Question #1. Will the 4G bolt right up where my old gear box was? The motor is a Hua Sheng 49cc, the only identifying stamp I could find was on the block under the clutch "142F". The shaft is keyed and I measure it as machined down to 9/16 on most of the exposed area and 11/16 closer to the engine... do we call that a "5/8 keyed shaft"? Its definitely not tapered, is there just the two types, tapered and keyed?
Question #2 Any recommendations on what size and where to get the pulley to replace the 11t sprocket and belt I will need to join the tranny to the rear wheel sheave?
Thanks for the help
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