[BITList] hd bolts

[HUGH]

Colin,

They look to be fairly standard medium speed engines.  If direct drive to prop or gearbox, with internal or external thrust block, where is the shock force on the bolts coming from?  Movement limiters (can't recall what we called them) would be used with resilient mounted engines for electric propulsion, though they would have a small clearance.  Shear forces wouldn't come into it there.  Slow speed diesels sat on CI chocks or resin similar, so fitted bolts were hardly practical.  I can't see medium speed engines being any different.

It pissed down yesterday, after 4 or 5 scorching days.

Hugh.
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