Enlarging Holes in Thick Plate

Gallery, Projects and General > How do I??

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awemawson:
I haven't actually measured it but they are a tightish push fit on nominal 1" bar. In fact I may have to use an adjustable reamer to ease them out a bit, as you don't want tight pins when trying to get things in alignment and assembled.

I'll weld on the extra web, in which I will have pre-drilled a hole, then decide how to ease them out a bit. A flap wheel may be sufficient if things don't move too much with the welding, otherwise I'l pass a 26mm reamer through them.

awemawson:
The Postman brought a one metre length of 1" EN24T bar this morning, so it rapidly got converted into three pins and a spacer:

awemawson:
The bigger pins go through those pesky holes, and also through an outrigger that I've welded on to give a bit more outer support to stop the pin bending too much:

awemawson:
This pair of brackets take both the lower lift arms of the tractor, and a triangulated set up so the not inconsiderable weight is taken by the tractors 'top link bracket'. This way the set up can be adjusted to be rigid and not differentially twist the hydraulic lifting shaft.

Here is a mock up of the triangulation, where the 1" bar at the front of the picture mimics the top link bracket on the tractor

awemawson:
Now the astute amongst you will have noticed that the eyes on that bar need to come much closer together, but the ball socket in the eye doesn't give enough 'crank'

Cranked eyes must be available as I have one on a top link that in it's original purpose should have been straight anyway !, but so far I've not managed to obtain another one !

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