Originally Posted by rcfoolz
GPM made titanium ones. I tried them once and tossed them in the trash. 1 hit and they twisted. Second hit and it snapped. Titanium cannot take the stress load.
RC, I not surprised by the results but to me it seems GPM's parts are more to blame than titanium in general. Titanium can be quite expensive when used in it's near pure form (%98-99.5). For low-cost applications, titanium is the primary component of an alloy that can also contain tin, aluminum, and valadium. 6AL4V (%90 ti) is a common type of titanium alloy used for RC parts, golf clubs, knives, etc. but other alloy mixes exist. Plus, how parts are made and quality control plays a big part in how well a part will turn out. Are parts cast or milled?
That being said, I can't see anyone cutting RC parts out of the highest quality titanium out there. A set of CVDs costing $400 wouldn't sell too well. Ti sounds sexy and exotic but it isn't. It's light, strong, and corrosion resistant but for RC parts undergoing a lot of stress you need parts that will take a lot more punishment than 6AL4V. Steel is an ideal material and for CVDs that's what I'd stick with. Even for screws, I've only used Ti on the top deck but not the bottom. If the head snaps off it will be a nightmare drilling out a titanium screw.