Originally Posted by
Burnzybubbles
I thought that wasn't the case with straight cut for the same reason you can change a bikes gears without the clutch? Are all straight cut box's the same?
You're thinking of a dog engagement box, like a seqential gear box.
A straight cut gear is exactly that, straight accross the mating surface. A helical gear kit is tapered to one edge to make it quieter as it has less surface area in contact than than a straight cut gear - hence a straight cut being stronger as there is more metal to metal contact.
A straight cut box will still have sycros, so wont change gear as fast as a dog box.
Pics
Helical top, straight cut bottom
https://www.google.co.uk/search?q=st...3n1brHnyeQjFM:
Syncro left, dog right
https://www.google.co.uk/search?biw=...MiN8jAPy2nDXM: