Hypoid gear direction of rotation?
Hypoid gear direction of rotation?
(OP)
Hello everybody,
Right now I'm in a big trouble with my rear axle differential. Short story is I need to turn the pinion(propshaft)in reverse direction to get forward move of the car. This is due to my gearbox which have opposite input to output shaft rotation. So if/when engine crank turns anticlockwise(watching forward), the propshaft turns clockwise which is obviously the opposite to almost 100% of all RWD car diff pinion rotation. My idea is to turn over my rear axle(and diff)so when propshaft turns the pinion clockwise car will have forward move.
So, what if I turn the diff's hypoid gear mesh in reverse direction? Also my pinion will be more on the top of the diff housing instead more to the bottom as been designed.
Thanks!
Right now I'm in a big trouble with my rear axle differential. Short story is I need to turn the pinion(propshaft)in reverse direction to get forward move of the car. This is due to my gearbox which have opposite input to output shaft rotation. So if/when engine crank turns anticlockwise(watching forward), the propshaft turns clockwise which is obviously the opposite to almost 100% of all RWD car diff pinion rotation. My idea is to turn over my rear axle(and diff)so when propshaft turns the pinion clockwise car will have forward move.
So, what if I turn the diff's hypoid gear mesh in reverse direction? Also my pinion will be more on the top of the diff housing instead more to the bottom as been designed.
Thanks!





RE: Hypoid gear direction of rotation?
Mike Halloran
Pembroke Pines, FL, USA
RE: Hypoid gear direction of rotation?
RE: Hypoid gear direction of rotation?
http://www.moserengineering.com/moser/wp-content/u...
Despite the theoretical strength disadvantage Some jeep like vehicles allegedly to it anyway on the front axle.
RE: Hypoid gear direction of rotation?
Also, as MikeHalloran noted, reversing the relative direction of rotation with your hypoid R&P will change the loading condition on the bearings and housing. The change in direction of thrust at the mesh contact will likely have an adverse effect on pinion bearing life, and the deflection changes produced in the housing may be enough to affect the load distribution at the mesh contact.
RE: Hypoid gear direction of rotation?
RE: Hypoid gear direction of rotation?
Endless thanks for your inputs. Seems I'll have to find another diff/rear axle solution.
@ Fabrico
Front 4wd axles usually have their diff assembled not in the middle of the axle which is a problem for rwd installation in a car.
For those who are interested my manual gearbox is from 2001 Audi A4 Quattro and rear axle is from Volvo 940 diesel.
Thanks again!
RE: Hypoid gear direction of rotation?