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All the replies are accurate. Unfortunately you have to have a german racing licence and have to be a member of a Berlin cycling club. It's pretty unfortunate.
the reason is that the velodrome nowadays is owned privately and frequently used for events like concerts. The city of Berlin has to rent the place and pay for every day of use there.It's a shame, really, because its a super fast track.
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Thinking of the DF4 as a track specific build, I want two bikes build up for track and street. Right now one bike seves it all.
Optically I find the Seta more intriguing, it looks sleeker. But it also looks flexier, due to the overall thinner tubes&stuff. Hence the question if the Seta is track worthy.
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Anybody able to compare it to a DF4? Does the seta flex notably more?
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Yeah, it's probably all about the edges and angles of which the wind comes on the surface. These round surfaces sound more aero to me as an aero-layman.
Standing starts are a thing. I tend to span my bike into the turbo trainer occasionally, and I am always surprised to see how much flex is in my (rather cheap) alu frame. Not sure whether I would notice it in the cranks, due to a lack of experience. But I will try it asap.
Chainrings are another story. I always have been fond of the Gebhardt one as a cheap replacement for Zen's. They are thick, rather heavy and pretty solid.
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Oh, and I wonder how they hold up against Rotor 3D24 track cranks. They would've been my first choice for aero. The price tag diff is significant, tho.
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For a square taper crank I always found my S75's to be pretty stiff and solid. But I'm no 80Kg sprinter type, maybe that makes a difference. Given how hard it is for square taper crnaksets to compete against (most of the) modern thru-axle designs they do quite nice.
But it's true that the the 75DD's are not so tempting. They always looked like an unwanted child, born just because the marked demanded something with outboard bb.
btw @umop3pisdn what do you mean by "agricultural"? :D
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The cheapest approach will probably be buying used stuff from here or ebay. I once got a full Tiagra Set for 45. Probably search for some Tiagra stuff like deraileurs, brakes and Crankset here, and get the thumb shifters for it.
This as a 40 or 38 and you would have sold it already!
GLWS