Tue Jul 10, 2012 2:31 pm

Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 39681
Location: Pleasant Hill, CA
 
Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 39681
Location: Pleasant Hill, CA
Tue Jul 10, 2012 2:31 pm linkquote
pasone - have you actually tried (especially on fast twisties when nearly scraping the centre stand) pressures nearer that as recommended in the owner's manual or workshop manual (as opposed to the absolute maximum on the VIN plate that doesn't appear anywhere else in the world)?

And have you adjusted the rear suspension pre-load to your liking? If that's still on the softest setting the 500 can indeed feel a bit squirrelly.

Also, if coming from a m/c background, the huge unsprung weight of the engine, transmission and exhaust can make it feel very different too.
Tue Jul 10, 2012 6:34 pm

Enthusiast
2009 MP3 500
Joined: 01 Jan 2006
Posts: 61
Location: Roseville, CA
 
Enthusiast
2009 MP3 500
Joined: 01 Jan 2006
Posts: 61
Location: Roseville, CA
Tue Jul 10, 2012 6:34 pm linkquote
jimc wrote:
pasone - have you actually tried (especially on fast twisties when nearly scraping the centre stand) pressures nearer that as recommended in the owner's manual or workshop manual (as opposed to the absolute maximum on the VIN plate that doesn't appear anywhere else in the world)?

And have you adjusted the rear suspension pre-load to your liking? If that's still on the softest setting the 500 can indeed feel a bit squirrelly.

Also, if coming from a m/c background, the huge unsprung weight of the engine, transmission and exhaust can make it feel very different too.
I started with the tire pressure at the recommended settings. The handling felt very loose.

I weigh about 185 pounds and have the shocks at position 2. A little sag when I sit on the bike.

I have scraped the center stand a handful of times (always on right hand corners), the last time was very jolting causing some loss of control and confidence in the MP3 (or myself).

I agree it could very well be the unsprung weight in the rear.

Maybe it would be a good idea to try to bump up the shocks to position 3 and lower the tire pressure?

BTW I did lower the front to 33 and rear to about 40. In the morning it feels a little loose and in the evening it feels better, I attribute that to the 40 degree delta temperature change. It may have more to do with the fact that the tires and pavement are warm than tire pressure.

Thank you very much for the constructive ideas, that was all I was looking for in the first place.
Wed Jul 11, 2012 4:56 am

Moderatus Rana
MP3 250 (sold) MP3 500 (current)
Joined: 11 Jul 2008
Posts: 21612
Location: Nashville, Indiana
 
Moderatus Rana
MP3 250 (sold) MP3 500 (current)
Joined: 11 Jul 2008
Posts: 21612
Location: Nashville, Indiana
Wed Jul 11, 2012 4:56 am linkquote
pasone wrote:
stickyfrog wrote:
Don't take it personal pasone. You will find that we talk to each other like we are a family at times. Sometimes dysfunctional and lively but mostly harmless. I would say that compared to a lot of other forums the people here are more real and seldom hide behind internet anonymity. Part of that is because many of us know each other. The other and probably bigger reason this is a nice place than other forums is the effectiveness of the site owner and moderators to keep is civil. Lively debate yes. Personal attacks and insults no.

Roll with it baby.
Thanks Stickyfrog, I don't hold a grudge (and was happy have my part of this thread end). I truly appreciate the information and people on this site. At the same time like you said many of you do know each other and possibly there is a bit of a clique feel to this particular forum. I also feel in this case the assumption to my post was: "This guy is a dumb butt" and well I don't think that was accurate or necessary.
Yeah it is just like anyplace. Jess, the owner of this site has used a neighborhood bar analogy. New people will often take a ribbing at first but as long as they don't cop an attitude it is short lived. Once people think you are for real...well...that's when the real torture starts.
Wed Jul 11, 2012 6:24 am

Enthusiast
2008 Piaggio MP3 500
Joined: 19 Feb 2012
Posts: 96
Location: Austin, TX
 
Enthusiast
2008 Piaggio MP3 500
Joined: 19 Feb 2012
Posts: 96
Location: Austin, TX
Wed Jul 11, 2012 6:24 am linkquote
pasone - I like your idea of firming up the rear shocks and lowering the air pressure some. Maybe even go to the 4th stop on the shocks and just see how it feels. If you are not going to load the bike down with passenger or traveling gear, what the heck. Sure does not hurt to experiment. I definately agree there is a lot of weight back there and probably distributed differently than a m/c. My wife reports that it does handle not as crisp and precise as her old BMW F650CS in the twisties. But she does say she is getting used to it.

Oh by the way, welcome to the forum. I have gotten good ideas and step by step help with tweeks to my wife's MP3 500.

Mark
Wed Jul 11, 2012 7:45 pm

Enthusiast
2009 MP3 500
Joined: 01 Jan 2006
Posts: 61
Location: Roseville, CA
 
Enthusiast
2009 MP3 500
Joined: 01 Jan 2006
Posts: 61
Location: Roseville, CA
Wed Jul 11, 2012 7:45 pm linkquote
m-johnson - Thank you. I think I will do a little experimenting. BTW, I think you find that I have been on Modern Vespa quite a while (2006) with some significant gaps in browsing. Years ago, I was thinking of a Piaggio scooter but did not get one. Later the MP3 caught my eye and I finally got one about 1 year ago. I tend to only post when I think I have something meaningful to contribute which is not often...
Thu Jul 12, 2012 9:11 am

Enthusiast
Mp3 500
Joined: 26 Jun 2012
Posts: 50
Location: Bay Area, California
 
Enthusiast
Mp3 500
Joined: 26 Jun 2012
Posts: 50
Location: Bay Area, California
Thu Jul 12, 2012 9:11 am linkquote
Fun banter aside, I have to thank you all for this dialogue! I too have been feeling like my MP3 500 has been acting a bit squirly and "loose," (not in that way) and thought the tire pressure might be the answer. That said, having read through to the end of this string, I'm going to give a suspension adjustment a shot first, restore the recommended pressures, and and see what that brings! Thanks again!
Mon May 24, 2021 7:55 am

Enthusiast
2019 MP3 500 Sport
Joined: 26 Sep 2012
Posts: 71
Location: California
 
Enthusiast
2019 MP3 500 Sport
Joined: 26 Sep 2012
Posts: 71
Location: California
Mon May 24, 2021 7:55 am linkquote
Does everybody's manual say something different? Mine says
29 PSI front
34.8 PSI rear
It does feel a bit more squirrely like that than when I run it at 28/32. Same as my BMW R1100S, that way I don't have to remember different settings.
I am 6'1 220lbs.
Mon May 24, 2021 12:15 pm

Veni, Vidi, Posti
Neutrino MP3 492.7 AK, 2013 Moto Guzzi Norge
Joined: 29 Mar 2008
Posts: 21857
Location: Harriman, Tennessee, Tn
 
Veni, Vidi, Posti
Neutrino MP3 492.7 AK, 2013 Moto Guzzi Norge
Joined: 29 Mar 2008
Posts: 21857
Location: Harriman, Tennessee, Tn
Mon May 24, 2021 12:15 pm linkquote
PabloLie wrote:
Does everybody's manual say something different? Mine says
29 PSI front
34.8 PSI rear
It does feel a bit more squirrely like that than when I run it at 28/32. Same as my BMW R1100S, that way I don't have to remember different settings.
I am 6'1 220lbs.
here is what you have to ask your self

is your tire gauge a certified with-in .05 lbs accuracy?

do you like the tire pressure you see on your gauge for how your ride and feel the response of the scoot?

all tires and all scooters have a RECOMMENDED tire pressure range. the actual amount you use depends on you, what your hauling, riding style .

As long as your not at extreme limits like 23 psi or 45 psi, meh ride it
Mon May 24, 2021 1:03 pm

Enthusiast
2019 MP3 500 Sport
Joined: 26 Sep 2012
Posts: 71
Location: California
 
Enthusiast
2019 MP3 500 Sport
Joined: 26 Sep 2012
Posts: 71
Location: California
Mon May 24, 2021 1:03 pm linkquote
old as dirt wrote:
...

is your tire gauge a certified with-in .05 lbs accuracy?

do you like the tire pressure you see on your gauge for how your ride and feel the response of the scoot?
...
As long as your not at extreme limits like 23 psi or 45 psi, meh ride it
My gauge(s) are pretty accurate, yes. There are very good inflators that have come out that are accurate within 2%. Pretty awesome progress. Amazon i your friend, and they are under $60!

But like you said, outside of major deviations I doubt it makes much of a difference.

On a motorcycle on a track day, a -+2psi difference is quite noticeable, but that is when pushing things. The MP3 is a bit more remote, and you can really trust that front end in motion, so yeah,I don't think it makes much of a difference in the handling.

I definitely do NOT recommend going too low. The previous owner of my bike let them go *really* low for some reason, and the MP3 was kinda scary on bumps - but I did fix it the next day.
Wed May 26, 2021 10:47 pm

Hooked
2008 fuoco
Joined: 19 Jul 2015
Posts: 339
Location: United Kingdom.
 
Hooked
2008 fuoco
Joined: 19 Jul 2015
Posts: 339
Location: United Kingdom.
Wed May 26, 2021 10:47 pm linkquote
Fuoco ( USA mp3 500 ) 12" fronts 23 Lb , fuoco fitted with 13" front 23 Lb and i don't feel any difference except with the 13" front wheels it handles far better.
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