JD 650H build

[JohnStilwell]

Well, I'm going to try to RC a diecast JD 650H dozer. My plan is to use Futaba 9157 (425 oz in) servos for the tracks and also the blade lift. I haven't found a clever way to angle the blade yet, so I might just skip that. I'm trying to keep this as stock as possible and retain as much weight as I can. Batteries are going to be fun to find a place for them, hoping I can do at least 4 sub C's at 5000 mah so I'll have a decent run time per charge.


The Box and unpacking:








Let's tear down: (yup, kinda a messy work bench, but it gets the job done... lol)
A couple of splined hubs from servo city worked perfect for mounting the sprockets to the servos. They just needed a 3/16 spacer glued between them to space the sprockets correctly for the tracks.





Track servo's installed:
Top view


bottom view, need an aluminum plate to mount the servo's



Back side, servo's don't stick out too far, I plan on mounting the hitch back on also




Starting on the blade lift servo mounting








I'll need a mill to make the mounting bracket and remove some of the metal to make room for the servos , so I got one of these. Wow, this thing is freakin' awesome




Thanks for looking
John