Quote:
Originally Posted by SlowOne
Glad you're sorting it out, however annoying it gets!
This is a straight cut bevel gear. If it looks bent in an way, it won't work. The pinion in your photo looks a bit worn! As the pinion line is co-axial with the spur gear line, and the tooth is not noticeably curved, only a straight cut bevel will work. Helical (spiral) bevels are used to increase tooth area contact, and hypoid bevels are used to lower the line of the input shaft in relation to the output shaft.
This is helical (spiral) and further down the same page is hypoid bevel. As you can see, the spiral is very obvious. Both are very expensive to cut, and that's why the cheaper straight cut gears are used. HTH 
Hope you get it sorted. Just being nosey, but when you say it's too big is it hitting the housing, or is the pinion bottoming out on the root of the spur gear? |
Hey mate!
Thank you for the information, both gears ARE helical, though they may not look like it. The pictures obviously don't show it too good!! Sorry about that.
They do both have a very almost un-noticeable curve, though it is there. As stated above they mesh perfectly when out of the diff housing its just not fitting right in the housing.
The pinion is brand new, It hasn't had any power put through it, same as the bevel diff gear. got them both today.
It's too big, almost like the pinion needs to be off centred in the housing to accommodate for its diameter. It's not hitting the casing, when the diff it's self sits in the housing without the pinion installed, it's spins freely and there is no binding.
Thanks mate!!