Thought I'd throw this in re 1/4-20 bolts. After a couple of hard landings tthat took the bottom out of the fuse because the bolts didn't break I now cut my landing gear bolts about 1/3 the way through just under the head of the bolt. Still strong enough under normal conditions but sheer off very nicely when you have one of those OOPS! type landings. FWIW

Curious what size/type plane for that size LG bolts?

Most of the planes that I fly are 40 size. When I converted trainers to tail draggers (Eagle 2, Arising Star H9 Cessna) I used 1/4 20 plastic bolts. Any kits or ARFs that have metal bolts suppliedget replaced with 1/4 2o bolts. (4*, H9 Cub). The other day one of my flying chums had his NEW Seagull Stearman up and on it's first flight the plane lost power. He had to put it down out in the cow patch and did so rather well but the rough ground took the landing gear off and ripped out the bottom of the fuse. He used the supplied 4 Metal bolts and blind nuts. I'm positive if he had used a 1/4 20 plastic bolt set up he would not have had the same damage. IMHO

Norm Nestie,

I agree with you. I have placed a wheel in crawdad holes several times and with nylon bolts they have sheared off with no damage to the plane. How ever if the plane is equiped with wheel pants they have a tendency to punch two holes in the lower wing. I have not figured out a way to stop that.