Reverse drive gearbox

[Yorkshire lad]

I’ve been offered a Man truck engine and I’m thinking of using it to drive our Mecmar drier
Problem is the engine drives in the opposite direction to a tractor pto
Any gearboxes that I’ve found are light weight that drive hydraulic pumps
This engine is 180 hp and drier takes 100hp so I need a heavy duty box
Can any one recommend a supplier of a gearbox to reverse the drive . Or maybe have one lying around

 

[mf7480]

Kramp

 

[john432]

If you can find a 90 degree gearbox off any machine. Turning them up side down changes the direction of rotation.

 

[Stock]

If you can find a 90 degree gearbox off any machine. Turning them up side down changes the direction of rotation.

Might want to rethink that...........................................................

Some 90 degree boxes reverse the direction of rotation others don't...............................................................................................

 

[zero]

Can you get the truck gearbox with the engine? One of the gears might be the correct pto speed in the correct direction.

 

[john432]

Was

Might want to rethink that...........................................................

Some 90 degree boxes reverse the direction of rotation others don't...............................................................................................

Most can be modified internally,. But a T gearbox would have one side turning clockwise and the other anticlockwise. I think

 

[BobGreen]

I’ve been offered a Man truck engine and I’m thinking of using it to drive our Mecmar drier
Problem is the engine drives in the opposite direction to a tractor pto
Any gearboxes that I’ve found are light weight to drive hydraulic pumps
This engine is 180 hp and drier takes 100hp so I need a heavy duty box
Can any one recommend a supplier of a gearbox to reverse the drive . Or maybe have one lying around

Many years ago we fitted a V8 Perkins on a forager. To get to the correct rotation we fitted a Eaton wagon gearbox. The drive was taken off the lay shaft which was already splined to take a flange off a rear axle diff
It also had the advantage of the lay shaft being geared down in the box by 2/1 so we got 1000rpm turning the correct direction

 

[Yorkshire lad]

I can get 540 rpm from gearbox tail shaft in second gear with engine doing 1500 rpm
It’s just turning the wrong way
This is a ZF box

 

[grass man]

Turn your engine around so the gearbox end is pointing away from the drier. Set engine above or beside the drier drawbar and use pulleys and a belt to get the drive to the drier. Good way to disconnect/connect drive by tentioning belt. You could remove gearbox completely and get a pulley driven of end of crank if you want to simplify things further and use pulley ratios to set speed. Maybe the gearbox gives you an option of using different gears for different processes of drying/loading/unloading

 

[Rs chunk]

I can get 540 rpm from gearbox tail shaft in second gear with engine doing 1500 rpm
It’s just turning the wrong way
This is a ZF box

Try reverse gear

 

[Wombat]

Try reverse gear

They are normally not a strong due to the amount of time spent in reverse

 

[Aftermaths]

Can you get the trucks driven axel as well? One side will be running the right way, then just weld up the diff

 

[quattro]

I’ve been offered a Man truck engine and I’m thinking of using it to drive our Mecmar drier
Problem is the engine drives in the opposite direction to a tractor pto
Any gearboxes that I’ve found are light weight to drive hydraulic pumps
This engine is 180 hp and drier takes 100hp so I need a heavy duty box
Can any one recommend a supplier of a gearbox to reverse the drive . Or maybe have one lying around

I got one off a x army 4x4 bedford transfer box for 4wd there used to be a place what sold x army stuff misterton lincs?? It lasted 25 years

 

[Netherfield]

I got one off a x army 4x4 bedford transfer box for 4wd there used to be a place what sold x army stuff misterton lincs?? It lasted 25 years

There was a firm called L.W.Vass who specialised in ex WD stock like that, Ampthill Bedfordshire.

 

[Will 1594]

David cowkin ,forager heaven ,will know how to do it ,
may even have a chopper engine with anderton clutch and pulleys to drive your dryer

 

[fredf]

I connected a D.B. PTO gearbox to a Perkins 6.354 engine to drive a Master drier years ago. Then you get 540 & 1000 out in the direction we used 540 this was better for engine.


Tom

 

[Yorkshire lad]

Try reverse gear

Tried reverse its way to slow. It will only do 150 rpm flat out

 

[GrantMo]

Davie brown PTO gearbox is a good way to do it as @fredf has said. Not sure if it would be man enough for 100hp though, it must be a big one?

 

[Netherfield]

1690 near on 100 bhp.

 

[Stock]

1690 near on 100 bhp.

bit you forgot to mention that 20 of them horses are away grazing.............................................................................