Recumbent - Recumbent and road bike in one

When I come to a hill I want to stand up to use my weight, and get better blood flow to my legs, so I made this bike. The website has a link to a You Tube video. http://www.roadrecumbent.com/index.html http://www.roadrecumbent.com/RR22.JPG

Hmmmmmmmmm. Interesting. Have you measured blood flow to your legs?

Twenty pounds is pretty amazing for a bike that big.

Wow...just wow.

Interesting - I think its more of a "crank forward" rather than a recumbent though

Twenty pounds sounds suspiciously low for something with that much frame. Yes, by BROL definition, the rear seat adjusts via a more-or-less vertical seat post, so technically it's a CF, or semi-bent. Interesting concept, although I'm not sure who the target audience would be - in recumbent mode it couldn't possibly be very aerodynamic, and in upright mode it would weigh too much and the long chain stays would mean flex and power loss.

Looks like you could carry a kid on back if you wanted to.

The bike is light. I bought the tubes here: http://www.macqc.com/items.php Part # 45533 are the big tubes. There's 13.8 feet of it in the frame and fork. it's listed at 0.219 lbs. per foot. So the total weight of the big tubes used is 3 lbs. ----- Check my site for a list of the light parts used. Some not mentioned are, a vintage SRP aluminum rear derailer pivot bolt. I don't think anyone makes them anymore, I got it from ebay. I got a carbon headset cap from ebay, and replaced the steel headset bolt with an aluminum one. I also drilled and ground the aluminum Easton EC90 internal steerer tube expanding gizmo 1/3 lighter, replaced it's steel tensioning spring with a half inch of road innertube. The list goes on. The single pivot Cane Creek 200 SL brakes are obviously smaller simpler and lighter than standard dual pivot, THEN, Cane Creek uses titanium hardware. I went one step further- The brakepad hardware was steel, but I found a guy on ebay that sold titanium brakepad bolts, and tiny aluminum bolts to replace the little steel ones that keep the pad from backing out of the holders. I also ground those little wings off the brakepad holders ...You get the idea...

WOW! That is really a unique bike. Thanks for sharing. You've shown us it is really possible to build a very lightweight bike using carbon fiber tubing. Am I correct to assume no welding was required? If not, did you use epoxy to join structural members, e.g., for the bottom bracket?
Are those 24" tires?

No welding. Epoxy and layered carbon fiber. I threw in some mechanical safetys just in in case, - carbon dowels, and a few other devices. I found a work-around to vacuum bagging, so It was made with minimum effort. Standard 700c Road wheels. The rear one is tubular, the front a clincher.