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When I re-arched my springs last year, it made no noticeable change to the tail wheel chain tension. Went back together with same chains, same length and tension. Worked great afterward. No more shimmy!
Looks good. Here is one year old FX3 Carbon Cub. Comparing the new AK Bushwheel spring to the 152 hr Univair spring. These are the two bolt tail springs used on the 2 bolt tailwheel head. Less issue with the head getting loose on the spring since I went this route. tailspring2.jpg