Fred W B
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| posted on 3/6/14 at 06:11 PM |
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Hole dia. to suit wheel hub studs?
Evening All
I need to drill some new holes in 2 hubs to accept Cortina style splined studs. If I measure over the new splines with a vernier 14 mm dead what size
do I make the hole? Obviously it needs to be a bit smaller to let the splines bite into the hub. I'm thinking 0.5mm smaller = 13.5 mm? The hub
is cast steel.
I've also got some aluminium hubs to work on, I would think you need a bit smaller in ally, maybe - 1mm?
Cheers
Fred W B
You can do it quickly. You can do it cheap. You can do it right. – Pick any two.
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rodgling
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| posted on 3/6/14 at 06:41 PM |
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I made some holes for some 13.3 mm studs - I made a 13 mm hole as 13.1 or 13.2 drill bits are v expensive. It worked, barely, but I think this is too
tight. Snapped a vice and could barely press them in, occasionally I worry I've over-stressed the hub (doubt it though).
When I researched this I seem to recall finding that 0.15 mm difference was about ideal. So I would go for 13.85 if possible, or 13.9 if not. (You
might be lucky and get an imperial size that is a good match).
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