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That's a useful reference: Steve knows what he's talking about.
I can add a couple of points
Chater - I don't recognise the numbers Steve quotes and I guess they must be for bearings using 1/4" balls. The number I know for 5/16th" balls with a single ring is 1007.
TA - 314 is intended for single rings, but I have used them with a double by putting a spacing washer behind the fixed cup. I've done this because I like to make the 'tread' (i.e. the distance between the pedals) as narrow as possible. The spacing washers are the the same as those used to put behind a screw-on block. This trick may also be helpful where a cottered spindle is slightly too short to give clearance.
Another little trick which can gain a few thou is to file the side of the cotter pin so the crank can sit slightly further out on the spindle.
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clubman
you don't have to, just remember the location