[FW] Tracked 4WD Lifter: Aegis

[R9000]

Thought you'd ordered a track setup...

Well, I did, but it turned out the sprockets were nowhere near large enough for what I need. I'm gonna end up selling the Heng Long treads, but I'm still making tracks that will fit around the wheels, though the robot will run without them. You'll see when I make the final CAD. Sorry for the confusion.

The thread is 3/8" UNF.

The thread on the drill shaft is very unlikely to be M9; after M5, metric thread diameters are all even numbers. Almost all Chinese drill threads are good old imperial (also known as UNF) 3/8 - 24 threads, which should be fairly easy to find.

Thanks guys, I didn't realize imperial measured thread was that commonly used. Nice one.

-EDIT- Ok, after a good amount of searching, (while I did find the nuts) it looks like it'll be cheaper and less bother to just get some better wheels that are thinner and have a hole I can just drill out to screw onto the shaft. I've found some, but I'm gonna make the CAD before I order them, just in case anything needs changing. I feel stupid that this is the third time I'm buying locomotion for this thing, but I guess I had to make at least some noob mistakes. The current wheels I bought were only £6 for all 4 anyway. They're gonna have to hang around until I figure out what to do with them. :P Next time, I'm making my own wheels, or following this guide if I have a drill press: http://www.windisch.co.uk/robots/archives/170