I just asked him what knuckles he wants and they are the new era ones. I asked why and he said because they are the best. I still don't know why but it's worth looking at.
On the turnbuckles here is the info
http://hdrcvideos.com/forums/viewtopic.php?f=18&t=10884
Savage: FLM Conversion, 6s, MMM, CC 1520.
Mini-T Pro: Micro Pro 6800kv, Lipo, HS-81mg, Dirt Hawgs
M18MT: Quark 33A, Y22S 6000kv, FP 2s Lipo
LRP S8-BX: RC-M Conversion, Tekin RX8 B1600KV, 6S.