2020 V4s Clutch Cover Torque

Well I’ve never heard of a torque setting plus xx degrees. Doesn’t sound right at all.

@nelly will know

Just don’t over do it

 

What size are the bolts?

 

If they're M6 screws/bolts, 10-12Nm is a safe figure if you've got no definitive figure and don't forget to lubricate the threads. Must be a workshop manual available online to give you the factory torque settings for your bike.
@Mary Hinge - 'setting' torque then degrees-of-rotation is one of the most accurate methods of putting a known force on the bolted system. It's the same as measuring bolt extension (very common method for big-end bolts) to get an accurate figure of bolt tension because you know the exact bolt stretch...

 

Fair enough, I don’t doubt what you’re saying. But why set a torque then follow up with say a quarter turn? Why not just set the initial torque value a tad higher?
I’m quite up to speed with torque and tension settings. All be it in heavy industrial applications.

 

Torque plus angle was quite common in marine main engines a few years ago. (bottom ends, mains, cyl heads).
These days all the new engines are done with hydraulic jacks for controlled stretch.

 

Agreed. But that’s tensioning. Not torquing.

 

Well its tensioning now for sure.
Then it was just big bolts and nuts with sockets and torque wrenches and then fancy little tools for the angle.
Sometimes it was just a small plate to help you mark degress with a paint pen. Other times it was a fancy drop over device that rotated a pointer
against a scale.

Here's an old MaK tightening instruction.

 

The screws are one use alloy ones. Torx head. 3.5nm plus 10 degrees when new with a check torque of 9-11 nm iirc.

 

Applying a specific torque to a bolt is a rough & ready method of applying a specific tension to that bolt. Torqueing is tensioning. However, to put a much more accurate tension in a bolt you'd either measure its extension or measure rotation. Its extension (i.e. strain) is a direct link to its tension (i.e. stress) through the relationship between stress & strain (its elastic modulus). Its rotation is another direct link as that rotation directly translates into extension (by nature of the thread's pitch) and thus to tension. All that bolts do is apply a tension force to the system they're used in - this is what keeps stuff together, either by this force + friction opposing lateral force, or by having more tension than the system can apply thus keeping things together.
If the OP's bolts are used to secure a CF housing(?), my guess is that the 3.5Nm is used to compress a gasket, or to just get to a good 'nipped-up' state, then the angle is used to achieve exact tension as I've described above.

 

Good read. But torquing and tensioning are different methods with same outcome.

 

I have 3 Teng Torque wrenches and all have a “degreeometer” (my word) to allow for a torque and an accurate nip.
Never used that facility personally.