Originally Posted by
Deathoftheparty
............. It's a slack headtube, but comes with a 45 degree rake fork which should put my trail in the right range. .....................
Maybe a 73 degree head tube is slack by today's standards but Europeans used 73 degree parallel track frames for years. My Bates steel track frame build in the eighties is 73 deg parallel with a 33 mm fork rake. The frame rides well on the Carson track. Is your "45 degree rake fork" a typo?
By the way 6061-T6 aluminum alloy is a great material for frames that are welded. In aerospace applications 6061-T6 is used because it is resistant to fatigue after welding. My Cervelo road, Ridley track, and Cannondale road frames all use 6061-T6.