Quote from: mtatkow on October 27, 2021, 06:12:57 PM
Feel free to contact me with any questions, I will try to help.

Hey mtatkow! I purchased a Radmission during the recent sale in the hopes of being able to do an upgrade like what you've done here. Your post here is the only one I can find of someone adding a rear derailleur! I was sure this would be a more common conversion as there seems to be plenty of room (as you've demonstrated).

I'm much more familiar with rear cassettes than freewheels and I'm having trouble figuring out what freewheel to purchase. My parts horde is embarrassingly large but only includes one freewheel and it's much too wide (a vintage Suntour Perfect 6 speed). I measure ~22mm to 25mm of space between the motor and the chainstay to squeeze in some gears. You mentioned that you thought you'd could potentially get a 5-speed in there but I haven't found any under 30mm (when I can even find measurements listed). Would you mind pointing me in the direction of which ones you think might work?