3 speed internal hub for SBP shifter... recommendations?

Scotto,

I was wondering how the Shimano Nexus 3-speed hub w/disc brake was working for you. I have the same hub on my bike and have a problem with it going in and out of gear in 3rd. When I hit 20mph it happens. I keep adjusting the bell but can't get over 18-22 mph on my bike. I have a 49cc 4 stroke w/4g belt tranny w/ 100t pulley, SB shift kit to a Shimano Nexus 3-speed hub. Are you or anyone else having this problem?


First build
 

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