Vulpa H750E · hardware & hydraulics
Purchasing
Sourcing list extracted from the order history — specs stay recorded even if a listing dies. Fastener counts track every screw size on Burnie's list against the assembly steps, so stock burns down as the build goes together.
Baum MFG kits — skip the à la carte sourcing
4/5 received
All 33 plates, 53 pieces. $290 today (paid $265). Mild steel except the 148T slew ring, which is stainless. Ships oiled and unfinished — needs cleaning before plating or paint.
$158 · 22 screw sizes + 5 threaded rods, at least 1 spare of each. Does NOT include 6mm rods, lock collars, bushings or bearings.
51× 5×11×4 plus the slew bearings. Duplicate of the AliExpress bearing order — spare set on hand.
Fits Vulpa H750E — matches the AT-C0064 coupler
Optional decal set. Patrick is leaving these off so the raw materials read as the finish.
Hydraulic system
1/18 received
Italian-style pump + reservoir. Never run below half tank — it won't pick up oil.
4CH required because of the quick coupler. Tighten every fitting before install.
AT-C0064 — optional upgrade, drives the 4CH valve choice
Fill tank over half full. See notes on ISO 32 vs 46.
Drive & motion
1/8 received
100 pieces. Verify pitch against the steel sprocket before assembly.
Rotating side faces DOWN; button-head screws on the lock ring
Track tensioners. 1.2mm wire / 5mm ID / 7.5mm OD — printer bed spring.
Electronics & radio
1/5 received
10 channel. Ch1 turn · 2 stick · 3 boom · 4 bucket · 5/6 tracks · 7 pump · 8 coupler
2 track + 1 turn. Cut red wire on all but one. Remove FR tab, keep LiPo tab.
Pump. Lock the endpoint so it can't run in reverse.
Turn channel — protects the slew gears from shock loads
12V system. Builder-supplied.
Lighting
0/4 received
10 pcs. Install the corner-piece light BEFORE mounting the panel.
Bearings & bushings
0/3 received
51 needed — press in early, but assemble rollers AFTER paint
10 pcs per pack
Rods, shafts & spacers
1/8 received
Pivot pins — cut to fit on your build
Track tensioner — M4×135 cut. Don't let it protrude inside.
Nickel-plated, 10 per pack x 3. Burnie's list calls for 22 - 8 spare. Sold as Metal Wheel Lock.
Threaded spacers on boom-end fittings
Fasteners
0/14 received
ST = aggressive thread, bites into printed plastic
STCS = coned head, self-tapping
Metric fine thread, pairs with nuts
Pull into hex pockets using a screw from the other side
Ultra-thin head
M4×8 replaces the sprocket set screws — use thread locker
Body & detail
0/3 received
Cab glazing — ONE sheet covers all the windows (the 10 was the order lot). Cut with the window templates; install the FRONT window first.
55mm piece forms the cab door mechanism
Consumables & shop supplies
0/3 receivedMedium strength, removable. For the M4×8 sprocket screws. Keep it off printed plastics.
Counterweight + overcarriage floor pockets. Leave the FRONT pockets clear for light wiring.
On Burnie's screw list next to the Loctite. NOT for the sprocket shaft flats — Loctite or gel glue there (superglue wicks into the bearing).
Steel plate set — laser cut (Baum MFG)
32/32 received
3mm · 82 × 82 mm · USE THIS ONE (matches your metal tracks)
3mm · 78 × 78 mm · for 06B chain builds — NOT used on this build
