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Flat Track Racing Mega Thread - INCLUDES SPOILERS!

flying_hun Tuesday I have coffee with some friends, we solve world problems. Roger is 84 and was a racer way back will ask him if there was anything other than a ridgid or swing arm. If he does not know I will have him call Dave Clark lives and WA and runs his machine shop at 91, he would know. Last summer he rode his old Sportster down from Washington.​

 
Excellent!
 
One more thought before Bill speaks to someone who might know: I was browsing some more today and ran across another early KR at auction that gave me an idea. If you remember the old Big Twins from the Panhead and Shovelhead eras, their frames had a vertical seat tube behind the transmission that was used to place the sprung post on the Buddy Seat, and it occurred to me that a spring frame might refer to a frame designed to accommodate a sprung saddle. This early KR has a sprung saddle (though quite different from the Buddy Seat arrangement), and the frame that accommodates its mounting is subtly different from that rigid frame that I posted earlier. So maybe... 1953_harley-davidson_kr750_1953_harley-davidson_kr750_f2dcefc5-0aa7-429e-b3f3-ef3e49d112e1-MB5...jpg
 
bikeama said:

flying_hun Tuesday I have coffee with some friends, we solve world problems. Roger is 84 and was a racer way back will ask him if there was anything other than a ridgid or swing arm. If he does not know I will have him call Dave Clark lives and WA and runs his machine shop at 91, he would know. Last summer he rode his old Sportster down from Washington.​

Click to expand...
Talked with my friend Roger McCarthy he said: All the KR were rigid frame. KRTT was a swing arm. He will give Davey Clark a call to see if there was any racer called a spring frame.

HD KR
kr-tank-bike-1.jpg


KRTT My friend Roger still has his
HD-1958-KR-3001-1.jpg


And who can forget the KRTT Daytona winning road racer
harley-davidson-krtt-1100x691.jpg
 
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