Woah yeah that's rad, 634 that's a big dude. Was over at a friend's house last weekend checking out some hirth... They definitely remind you of a puch or Sachs engineering wise. I like the big cast shrouds and everything, feels very old school. Old dolmar chainsaws kinda the same.
He's got a 69 evinrude that I'm gonna buy once I get some projects out of the way here. Talk about weird, designed by outboard engineers, totally different animal, opposed twin -that's why I want it... I've just got a huge boner for 2t opposed twin for some reason!
Didn't make much progress on the colt today, I procrastinated all morning making cookies and doing crafts with the kids, then had to do some plumbing, then cleaned up some frozen/drifted snow, put the new belt on my ariens single stage, and spent way too much time looking for this stupid little wire clip that holds the headlight in.... Finally found it and installed the new led headlight.