J Costa on MP3 400 - Like it but...
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2009 MP3 400ie RL
Joined: 20 Feb 2009
Posts: 84
Location: UK
Sun Jun 14, 2009 7:10 am quote
..but it does not improve acceleration 0-20 MPH at all.
The revs stay quite low (3500rpm -3700rpm) between 0-20 exactly the same as with OEM variator.

Maybe this is different on the 500 model. - http://www.modernvespa.com/forum/topic25391

20-80 MPH is considerably better no doubt, but again it never hits 7500rpm but around 6000rpm. The pull is very good once you get going but to be honest overall I am a bit disappointed. I was really hoping that it would improve those lazy take-offs.
I am awaiting a delivery of new Gillera Stalker 50cc for my girlfriend. She will definitely beat me on that if we do 50 meters drag race
Well life is tough!
Demon Black 500
Joined: 25 May 2008
Posts: 548
Location: Austin, Tx
Sun Jun 14, 2009 7:25 am quote
The difference for the 500 is much smoother take off. It feels marginally faster, but it takes a second until it reaches max torque. It revs high and hits peak rev very quickly. I have to have more care with the throttle to keep MPGs in check.
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 38068
Location: Pleasant Hill, CA
Sun Jun 14, 2009 11:53 am quote
Have you got the right weights for the 400? My assumption is that they should be lighter than for the 500 (which are 13g IIRC).
2009 MP3 400ie RL
Joined: 20 Feb 2009
Posts: 84
Location: UK
Sun Jun 14, 2009 1:22 pm quote
I am not aware of any different weights for J COSTA variators Jim. The only option would be to take few of them out in my opinion.

The variator is exactly the same as for Fuoco:


JC625FS - Piaggio 500 Motor Master - 9Kgr - JC16031025514M

JC626FS - Piaggio 400 Motor Master - 9Kgr - JC16031022514M
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