90 ton 1/14 metal excavator scratch build w/embedded PC

[modelman]

Nice start on this build. It's just my opinion but the problem I see is in the next to last picture. The large gaps between the track pads is why I do not like roller chain but I understand why you went this way. It works perfect and is readily available.

[SteinHDan]

Yes, I also don't like the large gaps. I think on this model it has mostly got to do with the track pad length being too long (25.4mm VS the 18mm it should have been if it were to scale) caused by me using a 1/2" pitch roller chain. I think with a 3/8" pitch roller chain (and the 7mm overlap of the pads that I already have) it would be almost no gap. But even the original model has some gap, though, visible in the very first picture in this thread.

So maybe I'll change the chain to a 06B (3/8" pitch) or ANSI #35 at some point.

That said, after having fastened 38 x 2 pads with 2 screws each = 152 screws by hand, I don't really miss having more pads per track ;-)


Stein :-)

[RCKiwi]

Looks great! Very precise. Hasn't printing in 3d changed this hobby? Imagine where we'll be in a few more years!
Keep up the good work and keep posting pic's