YEs have a pair made for my 500 and going to make a set for a 600. I used a 50 mah battery on the 500 blades hardest thing was finding shrink wrap in a size and the weight I wanted to secure the battery. when the weather clears I will try to get pics up.
Started work on some 350's for a person who is interested. These are my test blades. The ones I build for others will be Radix 350s. Also going to do some radix 430's I think.