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I would say unbelievable, but with you, Jason, I believe. Fantastic performance. This screenshot from Strava says a lot... Averaging 16.2 mph in a race like that is phenomenal. Top speed 51.4 mph, and a well-deserved EPIC suffer score of 400.

Sebring, Florida: A record number of Cruzbike racers, seven, turned up to race on February 13-14 at one of the most popular races in the world that allow recumbents to compete. Approximately 1 out of 3 recumbent racers were on a Cruzbike. In the 24-hour non-drafting RAAM qualifier, Ben Tomblin...

Just a suggestion to take a look at the V2K special we are now offering. $1199 build and freight included for the same cost of an un-built un-shipped Sofrider 4 YEARS AGO. If we still sold kits, you would be hard pressed to beat the final cost of this special, and what you would end up with...

Duly noted. We'll take it from here with bladderhead. This isn't a crack I've seen before. Based on the story of this frame, this break is more likely caused by multiple falls to the side than from normal tensile forces at the weld. Thanks for everyone's input. Jim

Hi Larry, According to the hypothesis I subscribe to, the power from the upper body is still going through the pedals/cranks. The force vectors from the upper body are summed with the force vectors from the legs, but those forces all converge at the pedal/crank. Therefore, measuring power at the...

Here is a "bench" research project I have recently posted for any Mech Eng MS students to perform. This will be a lot easier than trying to gather data on the road. -Jim Title: Does leaning the bicycle frame increases torque (and power) while climbing or sprinting? Introduction: Cycling...

Hi Dave, I like your analysis because the modest amount of power coming from the upper body that you have calculated (6.5%) is about what I would have estimated based on "feel". The ability to engage, at will, upper body muscles to contribute even 5% of the power during a climb is very...

Larry, - So glad you are alright! If the V20 had a CF frame/fork, we'd be selling you a new bike. This is a good reason for customers to stick to Aluminum frames, and bike makers to switch to CF. Jim

This is one of my favorite rides (not a race) every year, sponsored by the Sandhills Cycling Club; 350 riders doing 102 miles with about 5200 ft of climbing along a loop course that covers some of the most beautiful parts of the "sandhills" of North Carolina. It ends with a live band, great...

Great pics! For those that don't know Abram, at the 2013 Recumbent Convention in L.A., they held a contest to see which bike/rider could make the shortest radius turn without putting a foot down. Abram hopped on a Q and won! I forgot the radius, but it was very tight. I agree with Ratz - go...

...been waiting for this a long time! Thanks, Lucia.

Sounds good. I look forward to seeing it in action; even briefly. Thanks. Jim

I wanted to check in and see how this project was going. Any videos of it in action? Very interesting. Jim

Cruzbike has its own "channel" on Youtube.com with lots of useful videos. There is a good video demonstrating how to install and adjust the headrest. Jim

Hi Fred, That's a really interesting video and quite timely... the take-home message being that the factors that affect the stability/self-correction of a bicycle are a lot more complicated than just the trail and head tube angle. We've been experimenting with a variety of steering dampeners to...

Thank you all for the comments and suggestions... very helpful. We'll review the features with our product designer, Jacob Bouchard, and expand our search of manufacturers to see if we can get the price down on this storage box. Jim

Your friends here at Cruzbike have been working on many interesting projects. One of them is an aerodynamic carbon fiber tail box designed for the Silvio and Vendetta models. The idea is a sleek and lightweight box that can hold a few essential items, including two standard water bottles or a...

My pleasure, Bruce. 99% of the time that I'm riding around my very flat part of the Carolinas, I'm riding in "normal" mode, with the BB straight ahead. But as a drill, I will practice: 1) one-legged pedaling ( a safe way to approach and cross blind intersections... you can stop on a dime...

This is a snapshot of Ben Tomblin's record-setting ride on the V20 up the highest mountain in eastern North America (the AOMM). His cadence on climbing is about 80 (the yellow line). Take note of the green line. His climbing speed during the last ten miles of the 103 mile race was about 6-8 mph...

Lacking hard data, I think conjecture and arm-chair research are perfectly OK for trying to form theories as to what features, or combination of features, improve climbing/sprinting performance. I like your summary. I would point out that lengthening the distance between the hip and pedal on the...