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Carbon frame One of rules of thumb used to convert aluminium boat masts to carbon fibre, is to make the mast same size and thickness as you would in aluminium. The reason this works is that contrary to the hype, carbon fibre composite has about the same stiffness or, to use the jargon elastic...

Some people believe that the Some people believe that the energy stored in the frame will be returned (e.g, constructive interference) The natural frequency of the bike frame would be much higher than a riders normal cadence. So any kind of virtuous tuned response is highly unlikely...

Frame Stiffness Really interested to see the comment about how much quicker the vendetta is up hills. I think a lot of people including myself have been pleasantly surprised at how well a cruzbike climbs. A few years back for my own amusement, I did some analysis on the effect of frame...

Drag area More interesting is the plot as drag area. Assumptions: Cr=.003, mass bike rider and gear = 100kg if the assumptions are correct , the lines should be straight and horizontal. Whatever the absolute values, the CDA of the Silvio 2 is about 20% less that the 1.5

TLA = Three letter acronym I TLA = Three letter acronym I have been known to drop this into the serious corporate meeting ....

One week in to my Silvio ownership I am one week in to my Silvio ownership, and I thought it would be worthwhile to record my progress. The Silvio is my first recumbent, my old bike being a custom-built steel frame with fairly dated equipment including down tube friction shifters. In the last...

The group is SRAM rival. The group is SRAM rival. Gearing 50-34 compact crank set. 165mm cranks. 11-32 cassette. My X-Seam is 41"I will organise another shot with the bike side on. It is too early for me to make a call on whether the gearing is the right choice, but at this stage it feels...

I was wondering how long it I was wondering how long it would take for someone to spot that. I did pump it up when I assembled the bike. Am investigating.

G'day all, I am the proud owner of a new Silvio. I decided round about three weeks ago to buy one of these bikes, which I have been looking at for years, the Silvio 1.0 impressed me, I thought 1.5 a great improvement, but was unable to resist the 2.0. Firstly thanks to Eric and Ivan...