Quote:
Originally Posted by Luddite
I see this bearing question was raised on another forum
https://www.ducatiforum.co.uk/thread...earings.50724/
and you may recognise a couple of the contributers' names there (our own Dukedesmo and Nasher to be precise). Neither has mentioned a need for C3 but perhaps they could confirm what spec they actually used if they are reading this. |
Not 100% certain now but, I think I used C3 bearings in both the Monster (for the movable pulley) and 916 belt tensioners, based on the reasoning of the heat due to speed/constant running and that they are not lubricated. I still have the original (to me) fixed 'special' pulley bearings of unknown age/mileage but at the last check (last year) were fine.
Otherwise the Monster has done 14k miles on the ones I swapped and the 916 - 50k miles although is on it's second set of bearings - that said when I swapped them at, IIRC 30k ish miles they were fine and showed no signs of wear. I mainly changed them as I fitted larger fixed pulleys (to allow for head skim/tuning/shorter belt run) and so did the adjustables at the same time as part of preventative maintenance.