Bob,
Do any of your structural engineer friends know the mean friction factor (or sometimes called the nut factor) if Loctite 242 or 243 is applied? (The nut factor for the dry case is usually assumed to be 0,2) I can find Loctite information for other grades of Loctite but not for 242 or 243 (the blue's). There is a lot of contradictory information on the web. Some of the websites indicate it is an adhesive, some indicate it is a lubricant, and some indicate it is neutral before it sets up.
Sorry Marty, but Loctite is not something we use in structural engineering.
However here's a link to a datasheet for Loctite 242 I found, although you've probably come across it already. It's described as an adhesive (once it has cured), but it will obviously act as a lubricant initially while you're tightening the bolts.
http://www.sjgogo.com/pdf/242-en.pdf
The data sheet does mention lubricity, but also says that for critical applications you should do some testing. I'd suggest contacting Henkel for further information, although while they might give you some general guidance on friction factors for their products, I'm sure they wouldn't advise on any specific application.
If there are any mechanical engineers here, they should know more about this subject than I do, and may be able to comment. I just know enough to be careful. Hopefully Vans or Rotax will look into this issue and come up with some recommendations for all of us in due course. Until then, I suspect we're on our own.
Rob
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