I recall Trent Palmer discussing in his videos last year (possibly the year before?) he and/or his cohorts had significant number of flats and they were moving the other direction. Perhaps the Alaska vegetation wouldn't be as hard on them???
Third year for McGregor. First time I saw that video above too, I'm doing a "high speed" pass in the trike on skis at 26:00. Can tell it's high speed because the skis are normally at very happy angles but go into aerodynamic braking mode at high speed. Also, if you listen closely you can hear the auxiliary jet engine whine. Iirc it took me three hours to get there, think I was the last or next to last, 105th to show up. They had just finished giving away door prizes.
The Avid is parked for the winter but I have the skis mounted up on the trike. I was hoping to make it to the Jackson ski plane flyin at McGregor last Saturday but I don't care to do subzero temps in the open air anymore. Hoping to get out on them tomorrow for the first time this winter.
No Jenki, not a split lock washer, these are belleville washers. Nested stack increases the pressure available, inverted stack increases the range of operation. Nested and inverted increase both. They are not designed to be tightened down flat. Do an internet search on them. https://www.mcmaster.com/belleville-disc-springs P.S. I missed that others had already answered... had an image added too but it didn't make it.