I see that Electrify Bikes is offering an "OSF Upgrade Motor Kit" and Eco Cycle is promising something new this week. Are these the basic TSDZ2 motors with enhanced software and maybe upgraded displays/controllers?
Thanks for that. I have to say that Mark at Electrify Bikes has been better at responding to my emailed questions. Still have heard nothing from Eco. I'm still trying to learn more about the "upgrades".
Maybe Dave reads this forum. At any rate he got back to me last night with two emails which answered most of my questions (and raised a couple more) so I'm on my way. I'm thinking about just going to Nashville and shopping in person.
Hardware question: I currently have a 42 tooth front chain ring and I always feel that I'm pedaling too fast (I bike on mainly flat trails). Could I go with a 50 tooth, and if so do I need a longer chain?
I've asked David and I'll see what he has to say. Back to my original statement, I don't like the sensation of pedaling as fast as I do with a 42T ring. I will still have the rear derailleur if I want to "down shift".
I like to pedal at a fairly high RPM of around 90. You can use a gear calculator to determine what speed you will get in each gear at a particular RPM. I don't know what RPM you are comfortable with, maybe 80? Change the Gear Units on the calculator below to MPH @ 80 RPM and enter your chainring size and select the cassette you are using.