I understand that geometry measurements are a pretty good indication of how a bike will feel and fit an indiviudal. I currently ride a 55cm TT, which fit me like a glove the moment I adjusted the heights - no crazy stems, weird seatposts, etc.

So I'm not looking at other frames, and the new Eighth Inch Butcher caught my eye. I'm looking for a more relaxed frame, for wider tires, particularly for shorter jaunts and chill rides. But, in looking at the goemetry specs, the my TT has a 56mm top tube, while a seemingly appropriate Butcher (53) has a 57.9 (or 58.7 I guess?). Wouldn't this make me stretch out a lot farther? Thats exactly what I dont want to do.

Cliffnotes: Can you compare geo numbers from one bike to another to know how it feels, or is it all of them in comparison - especially in regards to top tube and body extension.

My knowledge of geometry is limited but it's more then the top tube length, its the angle of the head tube and seat post, as well as the length of them. Chainstay/seatstay also play a role.

How about a little more specifics: I'm comparing my Kilo TT to an Eighthinch Butcher frameset. Its one of my favorite looking framesets so far, fits the budget well, and fits the tire sizes I'd like (32-38ish). I just dont know what size to go for, or if it would be comfortable for me at all.

Check out this fit calculator: https://www.competitivecyclist.com/za...LCULATOR_INTRO

There are other ones online, just search for them.

As for Butcher frame, I'd prefer to see a threaded bottom bracket and not one that takes pressed in cups. welds look fine, it's a proper hipster color with track geometry, and the price isn't bad. They do have a geometry table on their website so you can compare the numbers to the Kilo.

The Butcher is a tricking frame, which is not designed and proportioned the same way as the Kilo (a track frame). The Butcher has nearly the same top-tube length across the board, and I think this is mainly to assure barspin clearance and eliminate toe-overlap. The main differences in sizing for it are the seat tube and head tube length (tallness).