Belts Question (Again) (Sorry)M750

[slob]

Originally Posted by jerry

whats the frequency on a 2v engine using the gates app???

For 1100evo: According to the service manual, the tension of new belts should be set to 140Hz and used belts should be 100Hz. The lower limit when the belts should be readjusted is given as 70Hz.
For 620/750ie: Horizontal 124Hz/Vertical 112Hz (+/- 5%)

[Luddite]

Originally Posted by slob

For 1100evo: According to the service manual, the tension of new belts should be set to 140Hz and used belts should be 100Hz. The lower limit when the belts should be readjusted is given as 70Hz.
For 620/750ie: Horizontal 124Hz/Vertical 112Hz (+/- 5%)

For the Evo, although the workshop manual says 140Hz, I think it's generally accepted that this is too tight and contributed to the "squeak" that some people experienced when the engine temperature rose to four bars and above. http://www.ukmonster.co.uk/monster/s...ad.php?t=48249

110Hz seems to be the new recommendation and I believe that Ducati North America issued a service bulletin to this effect, although I don't think there was any official change announced for the UK.

Note that, if you're using ExactFit belts, they recommend a tension of 99Hz with a maximum of 110Hz.