derailleur

Hello, I'm trying to install an engine kit on my Mongoose Excursion 27.5". This bike is 21 speed, and has this assembly on the back of the bike. In order for this engine kit to work, it needs to have one large gear on the pedals, and the shifter on the back wheel needs to go. I was wondering...

Hello, I'm trying to install an engine kit on my Mongoose Excursion 27.5". This bike is 21 speed, and has this assembly on the back of the bike. In order for this engine kit to work, it needs to have one large gear on the pedals, and the shifter on the back wheel needs to go. I was wondering...

so I gave up on my old shift kit and bought a SBP shift kit. I got it installed and mostly running in one day. I'm having since chain problems I could use some help with. First I should say that I have a shimano rear derailleur and 6 gears with a 7 speed friction thumb shifter. First problem...

Hi all, i have a specialized rockhopper (7 rear speeds) with a 48cc ht and the awesome SBP shift kit. Well, i noticed the massive amount of grime building up on the guide sprockets (the plastic ones), and that they didn't spin very well either, so i decided to take the rear shifter (Shimano STX)...