What Is a Hitch Pin?
A hitch pin is a metal pin that passes through aligned holes in a receiver hitch and the accessory inserted into it a ball mount cargo carrier shank or bike rack holding the two together A retaining clip cotter pin or lock keeps the pin from backing out under vibration and road…
What Is Interference Fit?
An interference fit also called a press fit force fit or friction fit is a shaft and hole combination where the shaft is always slightly larger than the hole even at the loosest allowed tolerance combination Assembling the two requires force heat or cold to elastically deform the parts as they go…
What Is Bore Size?
Bore size is the diameter measurement of the inside of a hollow cylindrical object a pipe cylinder hole or bearing The term shows up across several unrelated industries with the same basic meaning applied to different objects so the first step in answering what’s the bore size is figuring out which context…
How to Set Differential Pinion Angle (4-Link and Solid-Axle Off-Road Setups)
Setting pinion angle means adjusting your rear axle housing so the pinion yoke’s angle runs parallel equal and opposite to your transmission or transfer case output shaft angle once the suspension is loaded at ride height Get it wrong and the U joints on either end of the driveshaft stop canceling each…
What Is Black Oxide Coating?
Black oxide coating is a chemical conversion finish that turns the surface iron of steel and other ferrous metals into a thin layer of magnetite Fe O giving the part a deep matte black appearance and mild corrosion resistance Unlike paint or electroplating it doesn’t add a separate layer on top of…
Can You Weld Cast Aluminium?
Yes most aluminum castings are weldable but not all and it takes more equipment and technique than welding wrought or extruded aluminum Whether a specific casting welds well depends on its alloy composition and how it was originally cast
3-Link vs. 4-Link Suspension: What’s Actually Different
A 3 link suspension locates a solid axle with three control arms two lower links plus a single upper link usually paired with a Panhard bar to keep the axle centered side to side A 4 link uses four control arms two lower two upper and depending on how the upper links…
Can You Powder Coat Over Paint? Why It’s Possible but Not Recommended
Yes powder coating over existing paint is technically possible but it’s strongly discouraged The problem is heat powder coat cures in an oven at roughly 325 400 F 163 204 C and standard liquid paint blisters cracks or outgasses at those temperatures which usually ruins the finish before it ever leaves the…
What Temperature Does Carbon Steel Melt?
Carbon steel melts across a range of roughly 1 425 C 1 540 C 2 600 F 2 800 F It’s a range rather than a single figure because carbon steel is an alloy not a pure metal the exact melting point shifts depending on how much carbon the specific grade contains
What Is a 4-Link Suspension?
A 4 link suspension is a setup that uses four independent control arms two upper two lower to connect a solid axle to a vehicle’s frame The links handle locating the axle keeping it positioned front to back and controlling how much it rotates under power while a separate coil spring coilover…
Can a Plasma Cutter Cut Stainless Steel?
Yes plasma cutting is a common fast and relatively affordable way to cut stainless steel from thin sheet up to thick plate depending on the machine’s amperage The main thing to get right isn’t whether it works but which shielding gas to use and what to expect for edge quality since stainless…
Can You Weld Grade 8 Bolts?
Technically yes Structurally no not in any load bearing safety critical application A Grade 8 bolt that’s been welded loses the heat treated strength that makes it a Grade 8 bolt in the first place and that loss shows up right where you can’t see it inside the joint