Topline Cranks - BB length?

I only ever ran mine on my Zaskar which always has a 127.5mm axle. Clearance was exactly the same as the Shimano M730 chainset they replaced, until they snapped (after 10 years use).
 
Re:

Thanks for replies chaps :) ...tried a 122mm(ish) today I found in ze cave...waaaaay too close on the stays!...127mm seems the one to go for ;)

Cheers
 
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