Helical gears are just as strong. What you're looking for is a dogbox.
Why aren't gears hardened through a heating process to prevent them from stripping out like this? Too expensive?
Josiah Garcia
Dylan Baker
It's heated but not to the extent of heat treatment.
Logan Williams
Straight cut gears can't handle as much force as helical gears because they have less mechanical engagement than helicals.
Logan Kelly
>t. mechanical engineering student currently studying materials science & engineering
Can you recommend any books about materials science? I'm looking for a reference for identifying materials and their properties.
David Richardson
>can you recommend me a book on [incredibly wide subject]
lmgtfy.com
Lincoln Young
transmission gears are typically carburized (usually 8620 alloy steel), and for a reason
carburization gives an extremely hard exterior, roughly low 60's on the HRC scale, or about equivalent to a ball bearing. this allows the gears to go fucking.for.ever. without getting the least bit warn out. the root of the gear teeth is still softish, i.e. tough, which means the tear are less likely to shatter from being brittle. this is because carburization only hardens to a depth of around ~0.060"
some times gears are made of a through hardening alloy (4340, 4140, 300M) and oil quenched and tempered for a through hardness. this issue with this is that as the gear gets harder, it also gets more brittle. You can only Q&T 4340 up to mid 50's on the HRC scale, and the result is a very brittle gear tooth that can shatter. if you want the toughest possible gear, you might only harden to around HRC 45, which will leave you with a stronger gear than a carburized 8620 gear, but it is softer and thus it wont last as long as the carburized gear
t. - i made a little gear reduction transaxle in college for my schools SAE baja team
pic is of some gears i made for the transaxle. they were 4340 quenched and tempered to HRC 45. we wanted max strenght and didnt give 2 shits about longevity since the car would be cut up and scrapped before it ever had a thousand miles on it
Ryan Morris
>can you recomment me any good restaurants in this city
HURR DURR GOOGLE RESTAURANTS IN THIS CITY
Blake Stewart
this is the one we're using
abmpk.files.wordpress.com
Owen Brown
>HURR DURR GOOGLE RESTAURANTS IN THIS CITY
lmgtfy.com
Bentley Baker
Why not just make all the gears out of diamond?
Problem solved