New White Pulley fitted on 2015 F3-S - already has red dust!

[Mikey]

A few ideas that I have with this particular event.

If the output shaft splines are the least bit rounded, worn, or otherwise compromised. The new pulley is going to fail. And can fail quickly. Any amount of space between the pulley and shaft splines will allow movement. Movement is fatal. A correct installation and grease application can extend the life of the sprocket, under these conditions. But these steps will not save it.

This is not to say that your problem could not have been caused by poor or improper installation. But spline gap should not be ruled out. Especially if the new sprocket was installed correctly.

The sprocket spline material is intentionally softer than the output shaft as a failsafe measure to protect the much more expensive and harder to fix output shaft. If you have a failure, it is best to have it in the pulley.

I know the experts have settled upon a certain grease lubricant for the spline interface. But I've always wondered if an appropriate Loctite product might not be a better idea.

In any case. It is a shame that BRP has let this issue ride for so long. Surely, the engineers they employ could come up with a bullet proof solution. I suspect the accountants have more to do with this seeming lack of interest than the engineers.

A Loctite product would make sense but how hard is it going to be to take the pulley off if you do? How much heat is it going to take to make it let go?:dontknow:

 

[BajaRon]

A Loctite product would make sense but how hard is it going to be to take the pulley off if you do? How much heat is it going to take to make it let go?:dontknow:

Depending on which product you use. No heat at all. The other factor is, if the pully doesn't fail. You will probably never need to remove it.