RE: Lt-40 as taildragger
pic 1 - 4Star60 - I used a piece of fuel tubing screwed to the bottom of the rudder in two places. It can be as tight or loose as needed.
pic 2 - Hog Bip - standard spring mount
pic 3 - Kadet Senior - theres a Hitec HS-81 under the hatch. Intent was to double up for float rudder control
pic 4 - LT-40 plans modified to include mods similar to those described earlier in this thread.
pic 5 - Dubro piece that is labeled in pic 4 as "nylon support"