One overlooked fact is that the wave of wide rim wheels are eliminating the "advantage" of having a seat tube as a leading edge for the wheel. The wheel/tire combo is becoming a rather decent leading edge itself already. The seat tube which is 8-15mm in front isn't adding anything.

BINNY@FalcoBike

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Yes, it is true for now disc brakes wheels are all laced, but I believe in time, there will be tri spokes and disc wheels with disc brakes cutting that drag down dramatically

Here are the drag differences of the Culprit Legend Run against another brands version of the shared mold with seatstay, then run with disc brakes. Please Note, for the disc brakes, I ran it with a cut out behind the post, and the rim brake version was run with tape over it closing it , which we found to be faster.

I used the Legend with Rim brakes and no seatstay as the starting numbers and show the drag increase for stays and with disc brakes. again, Believe with technology advances those drag numbers will come down, this was done using Ashima mtn bike brake calipers and all bikes were run with the same 55 mm rim from Trigon, Disc build had a disc brake wheel build. Also, round spokes vrs aero spokes. marginal differences, etc

Most beam bikes use a pivot for height adjustment which, aside from the odd result that tall guys will end up w/ a more forward saddle, simply puts a huge load on the pivot -- simple physics of leverage. Pivot v. monocoque makes a world of difference. Softride recommended beam replacement every 5K miles. A monocoque design however, is a completely different matter. There is a lot of carbon at the front and it's ONE PIECE which helps a lot. The pic below shows the size of the structure against our road frame, which passed EFBe's toughest test standard. Our own testing was based on 300lb rider weight, so durability I won't worry about. FYI carbon has superb fatigue characteristics unlike alu, so if it doesn't break in 500 reps under load, it most likely won't break in 100K or 200K reps.

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Can anyone tell me how to upload a chart with drag n umbers. I have tried over and over again even uploaded an image to FB but cannot get it to work or show in forum

Here is the link if you need it. Sorry I cant get it working in the forum

https://www.facebook.com/culpritbicycle/photos/a.759280034151598.1073741843.325827290830210/759288114150790/?type=3&theater

if batman rode a pushie...then the falco would surely be his ride. I love the look!

Yes you can use a standard road stem... I rode one like that for weeks at the prototype stage (still remember the looks of the local cycling boys when I showed up for the weekend warrior rides, LOL). The adjustable stem can also get you a "negative" rise which lowers the bars a bit more.

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Here you go!

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´Get the most aero and light bike you can get. With the aero advantage you can be saving minutes and with the weight advantage you can be saving seconds. In a race against the clock both matter.´

BMANX

Thank you. I appreciate it.
The new Legend under re design will be much faster. Will have to wait til next year to see.

i'm wondering of the shiv fork would work on the dimond? looks like the cutout on both frames are very similar, any idea?

The first TitanFlex was designed in 1991 to enable me to return to cycling after back surgery. The Softride of the day was very heavy and--in my opinion--had too much flex. Using a titanium boom kept the weight down and enabled the amount of deflection to be customized. (US Patent #5,474,317)
I never had ambitions to build a bike empire...only wanted to have fun making and selling them direct--which the dawn of the net afforded. Because I have zero overhead (no advertising expenditures or college tuitions) I can pass on my component costs. How about $1600 for an Ultegra Di2 grouppo which includes everything but pedals. This even covers assembly and ground shipping costs!
Over 20+ years with the help of 600+ owners, the design has been incrementally enhanced--and still made in the USA. I'm in the process of updating the website with new images. Please visit http://www.TitanFlexBikes.com for the full story.

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Tom Piszkin
UCSD Triathlon Coach
@TitanFlexBikes
(619)334-7222
(619)328-1870 FAX

I got my titanflex before my back surgery. I guess I did it backwards.

How does the integration compared to that of the adjustable version?