Any software that compares frame geometry?
 

Are there any programs on line, preferably free, that will allow me to easily input frame data and compare different frame geometries? I've got a bunch of bikes I'd like to compare and at least roughly figure out how to adjust fit across different frames. Thanks, Woody

use an excel spreadsheet.

I'm looking for more of a visual comparison.

That's exactly what I was looking for. Bikecad looks great, but is perhaps too deep of a rabbit hole to go down. Thanks for the suggestions.

I played with BikeGeo a bit and unfortunately it requires head tube and fork leangth. That makes it a little hard to work off of some of the commonly supplied specs. interesting that it dose not ask for seat tube measurements, which i get because most seat tubes are not measures C to C. It would be nice to be able to link values so that raising the top tube vertically would increase the seat and head tube lengths, or if you had the seat tube C to C you could determine the head tube.

It'd be great to have all the actual measurements, but if you had a good photo of the frame, maybe you could overlay a grid on it in PhotoShop or whatever and get close-enough values with the Ruler Tool there. Start with a known value that the manf gives you, scale that to the size of the picture, go from there...

Try this: Bicycle Geometry 101

Haven't read the whole thread, but www.99spokes.com does this and is free! It is new so there are a few niggling bugs. But it is pretty good.

ouf!!! internet its great if there is JohnDThompson around! Thank you for giving all this men.
I think I have work for the next few years.

Thanks again