information of the parts.
track & wheels : tamiya educational construction series #100.
use a long & a short track from the set to make one delta track.

wheels adaptation : for the upper wheel, use tlt-1 big wheel option parts. original is a 1:10 wheel. modified and change it as a hexagon adaptator.

knuckle & shaft : extra long tlt-1 knuckle from tobee option parts.

steering block : 1:10 ep (lc lab - hong kong brand) or use abc options.

metal frame at the track wheel : tamiya 4wd toys parts #15167 track metal frame.
it's kind of soft. use 2mm screws/screw mounts & aluminum rings to reinforce the
strength.