quality wheel studs

[scoobiedoo2029]

if you look at any of theise kind of bolts under high magnification youll see all kinds of tear out from the cutting of the threads. rolled or formed threads are much more expensive and uncommon but dont do this, i dont think ive ever seen a formed thread on a small bolt, there mostly giant things, this method i think was developed for seam locomotive boilers because of pre bessmer steel. I really think the heatcycles and the torqueing and untorqueing results in these microfissures running like a crack. and the small size of this hardware just multiplies the issues. your not going to catch it before it runs theres no way around this without really expensive hardware that no one seems to sell or using hardware as one time use, and the failure rate dosnt exactly justify the cost. i also dont even think such small threads can be manufactured without cutting.

i kinda see this as the justification for centerlocks. if you ever seen the FEA of a wheel spacer itll make you rather concerned, the whole structure was green till you add a spacer now you got a tie-dye shirt.


edit i forgot nomenclature : SCC stress corrosion cracking.

https://en.wikipedia.org/wiki/Stress_corrosion_cracking

[scoobiedoo2029]

this might be a prefect use scenario for magnaflux

[aeronaut]

Awesome stuff scoobie, I'm always amazed at what doesn't break on these cars, 1.4G turn hit curb bounce through pot hole bottom out etc repeat.