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drilling holes in axleboxes

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Nigel Hyde	31/01/2010 20:53:13
45 forum posts 2 photos	Hello I am revamping an old chasis and i need to replace the axleboxes. This loco does not have horns, but the axleboxes run on the frames, so i made the new boxes all the same and filled the frames to fit Do i need to make a jig to drill and ream the hole or would it be good enough to set them up in the four jaw? how do you all do it? Thanks Nigel
Circlip	01/02/2010 11:03:51
1723 forum posts	Are the cutouts in the frames true and square?? If so, why not the 4 jaw?? DON'T make the holes too tight, the loco will bind on corners. Regards Ian
Phil Ashman	01/02/2010 13:48:02
33 forum posts	I used a simple jig to determine the axle centres, to ensure that they were the same on both sides of the loco. The same jig was then used to determine the centres in the coupling rods, because if they're not exactly the same, the rods will bind. Having got the centres, the boxes were bored in the 4-jaw. Phil

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