Doug
07-05-2006, 09:58 PM
Glad I checked this out...(hope these photos make it)
Take a look at this boom end fitting for the mainsheet - the bolt is getting a might on the thin side. I don't think the fitting is really meant to have the figure eight shape either. What is a little unusual is that the stainless bolt has taken as much punisment as that cast AL fitting - I would think the bolts threads would just saw away at AL.
Some more egging out - this is the rear port chainplate knee - appearently the chainplate bolt's threads egged out the plywood in the knee until the first bolt met the underside of the deck. Probably not a failure waiting to happen as the boom end fitting but would not make a happy boat.
A personal peeve is not matching a bolts shoulder - the smooth part - to its use - if threads contact either plywood or metal it will result in a sawing action and egging of the hole.
Take a look at this boom end fitting for the mainsheet - the bolt is getting a might on the thin side. I don't think the fitting is really meant to have the figure eight shape either. What is a little unusual is that the stainless bolt has taken as much punisment as that cast AL fitting - I would think the bolts threads would just saw away at AL.
Some more egging out - this is the rear port chainplate knee - appearently the chainplate bolt's threads egged out the plywood in the knee until the first bolt met the underside of the deck. Probably not a failure waiting to happen as the boom end fitting but would not make a happy boat.
A personal peeve is not matching a bolts shoulder - the smooth part - to its use - if threads contact either plywood or metal it will result in a sawing action and egging of the hole.