J72 Coupling rods

[Bill Bedford]

I produce a set of coupling rods for a J72 which have the knuckle joint in front of the middle crank pin. A customer has complained that this is wrong and the knuckle should be behind the pin. All the clear photos I have seen show the knuckle as I have drawn it.

Does any one have a good photo of a J72 with the knuckle behind the crank pin?

[JASd17]

Bill

All the photographs I have looked at show the joint in front of the centre crank pin.
There is an unclear shot in fig 22 of Part 8B of the Green Bibles which may look like it is behind, but a further Casserley photo of the same loco 8680, taken at the same time in 1947, clearly shows the knuckle-joint in front. All the pictures in K Hoole's NER Locomotives as above.

John

[52A]

69024 at Heaton. I have not seen any photos with any other layout.

[manna]

G'Day Gents

Look at the state of that roof, looks like it fell off the layout

B***** nice picture

manna

[52A]

Probably woodpeckers, that's why I wear a hat round here.

[Mallard]

I produce a set of coupling rods for a J72 which have the knuckle joint in front of the middle crank pin. A customer has complained that this is wrong and the knuckle should be behind the pin. All the clear photos I have seen show the knuckle as I have drawn it.

Does any one have a good photo of a J72 with the knuckle behind the crank pin?

Will these do showing you are correct?

[Blink Bonny]

I reckon you're right on the evidence produced, Bill.

[ArthurK]

All my photos of J72s (albeit mostly the BR built version) show the knuckle to be in front of the centre crank pin.

This is an LNER build 68736 at Gateshead. It was still sporting a 50A shedplate.