Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Possible aero mods for conventional frame bicycle

Grant-53 · 04-10-2015, 09:10 PM

There a number of things you can do to improve the aerodynamics of any bike. The main drag is the rider's body. Decide what position is safe and comfortable for you. Typical road bike position is a 45 degree back angle. A time trial or triathlon bike has the rider's back parallel to the ground. The nose piece and tail box covers from the should down to just below the knee. The width would be about 20 -22" at the shoulder and taper to the knees. Overall length is at least 3 times the width. VERY IMPORTANT! The nose piece needs to attach to the frame and not the handle bars to avoid cross wind input.

See the aero tail box in Alternative Transportation by low&slow. Streamlining a motorcycle is very similar to an upright bike. There is also a thread in the Technical/Bike Building forum at recumbents.com

04-10-2015, 09:10 PM	#6 (permalink)
Grant-53 Master EcoModder Join Date: Feb 2010 Location: Elmira, NY Posts: 1,788 Thanks: 320 Thanked 357 Times in 298 Posts	There a number of things you can do to improve the aerodynamics of any bike. The main drag is the rider's body. Decide what position is safe and comfortable for you. Typical road bike position is a 45 degree back angle. A time trial or triathlon bike has the rider's back parallel to the ground. The nose piece and tail box covers from the should down to just below the knee. The width would be about 20 -22" at the shoulder and taper to the knees. Overall length is at least 3 times the width. VERY IMPORTANT! The nose piece needs to attach to the frame and not the handle bars to avoid cross wind input. See the aero tail box in Alternative Transportation by low&slow. Streamlining a motorcycle is very similar to an upright bike. There is also a thread in the Technical/Bike Building forum at recumbents.com Last edited by Grant-53; 04-10-2015 at 11:35 PM..