Hi all, I am happy to find a forum to discuss bents. I am presently building a Greenspeed GTS and wonder if anyone knows the EDR of a Jalco JL-DM30 20"x1.5" rim. The running gear on the trike is going to start out with Shimano 105 triple crank through a rear Sturmey Archer 7 speed. As I said, this is what I am going to start with as in the not to distant future I will be moving to an area with hills so the rear may require a change. Any help will be appreciated. Cheers.