Knocking sound engine very low reps...
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Member
2019 MP3 500 Sport
Joined: 26 Sep 2012
Posts: 45
Location: California
Sun Nov 22, 2020 11:54 am quote
...since I have no other references and never had ridden one before, is the knocking sound and vibration at very very low reps normal? I assume so since it's a big one cylinder with auto clutch, just asking.
Hooked
2015 MP3 500 ie Business
Joined: 29 Oct 2019
Posts: 324
Location: Belgium
Mon Nov 23, 2020 5:07 am quote
Describe more in detail and vehicle service history, miles on the clock, etc. Does the noise go away when the revs climb? Does the noise only occur at idle and take off, etc, etc, etc?

Might be a simple case of needing slightly lighter or worn vario weights.
Member
2019 MP3 500 Sport
Joined: 26 Sep 2012
Posts: 45
Location: California
Mon Nov 23, 2020 7:55 am quote
the bike is a 2019 with 1,200 miles.

it's only and exclusively at very low reps during takeoff from a stop, you know, the first 2 seconds or so after applying throttle...
Hooked
2015 MP3 500 ie Business
Joined: 29 Oct 2019
Posts: 324
Location: Belgium
Mon Nov 23, 2020 9:27 am quote
Sounds like the typical bucking syndrome that the 500 is known for.

Either put in a complete of lighter set of rollers OR do what I did. Remove 4 of the black stock 25gram rollers and sub in 4 light blue 21gram stock Piaggio rollers from a older 500. Be sure to keep a staggered pattered in the proper orientation (21-25-21-25-21-25-21-2) to keep things balanced.

Makes night and day difference and cheapest mod
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