Newbie Scratch Build - D575A Dozer

[Lil Giants]

You could get another Sabertooth esc that will handle the 24v input voltage & set the the output voltage with a multimeter to the 12v pump.

The 2nd output on the 2nd Sabertooth could be good for a powerful winch on the back of your dozer.

2spd track motors - 2spd cordless drill motors... use a linear servo to change gears.

[sparkycuda]

I always perk up when I see a Komatsu machine being built. Yes, the D575A is a monster! Was designed for mining use, but one was used in Nevada by a housing contractor. It had a ripper to break up the caliche (some refer to it as petrified clay) near Las Vegas where no explosives were allowed. It was the only machine that could rip the stuff - ripper tooth would get so hot during use, it glowed, and had to be replaced almost daily. 1150 HP and about 300,000 pounds, 90 cu.yd. blade over 24' wide. Ripper shank almost 7 ft long.

Ken

[Originalrob]

That's for the great ideas !

So had a little machine time the last few weekends:



track profiles turned up so experimented with forming the right bends etc



it needed a little trimming



End result



the gap between the pads was a little too big so had to readjust the jig





these are the ones I will be going with


they need slightly milling at the front so there is a couple mm tolerance but generally they operate well. still need practice on tig as my welds are shocking: )

[Originalrob]

Also started on the track supports:

[Originalrob]

Originally Posted by Lil Giants

You could get another Sabertooth esc that will handle the 24v input voltage & set the the output voltage with a multimeter to the 12v pump.

The 2nd output on the 2nd Sabertooth could be good for a powerful winch on the back of your dozer.

2spd track motors - 2spd cordless drill motors... use a linear servo to change gears.

That is even a better solution ! the sabretooth controllers a relatively small so will fit in easily ( I say that whilst touching timber! ) I would like to buy a complete pump + motor hydraulic setup so I don't have to go into the intricacies of pump / motor specific ratios.