Well it does not hold anything on, so snug is all it needs to be! I think your better senses kicked in and rightfully so...
Ask Fred about torquing oil drain plugs........just sayin'
I torque the critical stuff.......not oil drain plugs.
Been changing oil on cars, trucks, and motorcycles for over 45-years and never used a torque wrench on the drain plugs. Just use common sense feel...
Never had one fall off, leak, stripped, or unable to get off the next time.
new ones have smaller bolts.All the years I've been riding, 50yrs now, using torque spec for drain plugs I've never had problem. What size bolt is it? I think on my 08 the thread is 14mm and spec at 25ft/lb. No way in the world you will damage a 14mm thread bolt using 25ft/lb. Don't know what the 2018 uses, but go by the torque recommended and you won't have any problem.
Whether a helicopter, airplane, automobile, or motorcycle, it doesn't change the fact that a bolt takes two stresses when tightened. One being tension, the other torsion.You forgot to add one:
* higher torquing-tolerance parameter for helicopter bolts...perhaps?
In most Physics and Biological environments the synergy of calculable spectrum do not transfer from one environment to another.
I am wondering if this dis-similarity is applicable to engineering designs. IE: what worked on the mechanical synergy on a Heli may not apply to motorcycles...just wondering...can I wonder?...its ok to wonder, ain't it?
@Nando. Knowing there is no way I can ensure the threads of the engine case are dry and oil-free when reinstalling the drain plug bolts, I treat them as a wet install. This means reducing the dry torque value by 25%. Thus, I set my torque wrench to 16.5 lb-ft..
I bet the Helos you worked on had steel inserts in the aluminum material.@Nando. Knowing there is no way I can ensure the threads of the engine case are dry and oil-free when reinstalling the drain plug bolts, I treat them as a wet install. This means reducing the dry torque value by 25%. Thus, I set my torque wrench to 16.5 lb-ft..
Note: that's a 25% reduction, not 25% of the manual as you stated [which would be 5.5 lb-ft.].
Some here use 14 lb-ft, which is a 36 percent reduction. I happen to use 25%, because that's what I was taught back in the day.
What's important is being cognizant of when something is a dry or wet install and treating the install accordingly.
That's true. On components that require frequent disassembly and assembly, you'll typically find Helical Coil or Twinsert Inserts are used to reduce the chance of damaging the component. Items made from magnesium, such as gearbox liners and housings are usually assembled using Ring-Lock Studs and Locknuts.I bet the Helos you worked on had steel inserts in the aluminum material.
Not always.This is all very interesting. I always assumed that the service manuals would specify correct torque knowing the drain bolt will be covered in oil, because that will always be the case. So we should reduce cam cap torque, the bolt on the bottom of the fork legs ect 25% also because of oil on the threads?