Who doesn’t like watching an engine rebuild time-lapse video? It’s one of the most calming things to watch and also very fascinating. Hagerty has been posting such videos on their YouTube channel for years now and we’ve enjoyed them quite a lot.

Here is one for you riders. After three months, 20,000 photos, and more than their share of hurdles, they’ve completed another Redline Rebuild time-lapse video. This time around, Hagerty’s Davin Reckow tackles a two-wheel project, a bit of a Frankenstein bike with the heart of a 1957 Harley-Davidson XL Sportster.