X9 Owners & Riders Club

Hello guys
I am owner of this scooter 2 months, everything is fine but i don´t like vibrations at start and between 3000-4000 RPM.
My scooter now have 17k km, and it is time to change belt, rollers and sliders.
Belt i will buy original piaggio, but for rollers i will need your help about dr. pulley.
Scooter have variator with 8 rollers, standard weight is 21,4g  on dr.pulley site is recomended 10-15% lighter rollers and i thinking to get one of 18g.
With standard rollers i have these speed and rpms at constant speed:
- 60km/h 3500rpm
- 80km/h 4100rpm
- 100km/h 5000rpm
-120km/h 6000rpm
-140km/h 7000rpm

At start when i give full throttle rpm goes to 5200-5300, how many rpm can i excepted with dr. pulley 18g rollers in same conditions?
Is there necessary change contra spring at clutch with stiffer one?
I hope so that i will get smoother start with lighter rollers, and less vibrations at slower speeds, especially when i drive with passanger.
note: the engine is well known master 500 which is used on nexus,fuoco and mp3.


Thanks

>note: the engine is well known master 500 which is used on nexus,fuoco and mp3.

and as 400 in the X8
and it is well known, that is has vibrations. My dealer says: "It is a little bit abrasive"

Just fit the lighter DrPulleys and a new OEM belt and the vibes will be less and the take off a bit livelier. You can't get super smooth take off on a 500 motor, and non OEM belts don't last long. No need to change the spring unless you do a lot of steep hills with a pillion.

How much grams do you recomended?

I was looking for malossi, polini, costa variator, but how can i see on you tube videos scooter goes too high with rpm`s, and that is ok in town, but i will drive 80% on open road, little on highway so i must think on fuel consumption.
Now with stock rollers fuel consumption is 3,8-4,5L on 100km.

This is why I opted for the 350, reviews for the 500 were poor. "Too rough", vibrations and the clutch snatches, and not much more top speed than that of 350 to make the 500 really worthwhile. Only if you carry passenger often in hilly areas, i.e. has more torque.

You right reviews are very poor for 500 , i tested this bike on highway and there is smooth and no vibrations, but in town it was realy iritant vibrations, and not healthy  but i recognized that when i buy it  :redface::blush:
Now i must to try improve something to improve that.  :headbang:
I was drive 350 clutch is something amazing on that engine, it was in oil and that is what every scooter by my opinion must have  :thumbup:

The 350 wet clutch on my Beverly make the low speed pick up much better than a dry clutch. Using it in heavy traffic has no effect on it. So a real improvement.

Yes, the wet clutch on the 350 was excellent. With hindsight i think Piaggio should have invested some money in transferring the wet clutch system to the 500. It would have transformed it from mediocre to a good scoot but still short of the excellence of the 650 Burgman. ::lol::

I cant find on internet, is white malossi contra spring stiffer or softer than original?
What is to expect with it?

After thinking about this I think if spring is softer, that would make the revs lower. Because the rear pulley would open more easily so higher gearing at lower rpm.

I would be very wary of changing the big spring in the clutch assembly. Its main function is to maintain the correct tension in the drive belt and it only affects the pulley ratios indirectly. getting it wrong could cause serious belt wear problems.

The big rear spring works to control the torque effect on the gearing. If you lose speed on uphill sections and adding throttle doesn't lower the gear to maintain speed then the spring is too light. A heavier spring prevents the variator from raising the gearing too high when more torque is applied, or in effect allows the added power/torque to lower the gearing a tad.
The split rear pulley widens with applied torque against the spring tension and allows the belt to sit lower therefore raising the gear ratio, so a heavier spring prevents over raising of the ratio and also gives the bigger drop in ratio as more torque is applied for hill climbs or overtakes.
If you lighten the rollers up to 15% all that happens is the initial rev point is raised on launching from stationary giving a livelier start but once the clutch is engaged and the bike is rolling the effect gradually lessens until at 30mph upwards you really don't see a great difference so no change to the spring is needed.

Hi there  - that's quite interesting to me as I notice much more vibration on my Xevo 400 (same engine as X8 400) compared to the 250. Is this a general thing Dave or other experts are familiar with and is it something that I should be concerned about ? I hit 80kmh at 4000 revs and am at 100 kmh at 5000 which is obviously much lower than the Xevo 250 - at 80-100kmh the vibration is hardly noticeable. Is this something I need to be wooried about in terms of future mechanical problems and apart from fitting lighter rollers is there much that I can do about it? Thanks to all.

The Piaggio MASTER 400/500cc motors are variable in their accuracy of balance. Being a big single where passive balance is not possible like it is with a twin, a separate balance shaft is geared to the crank. As it uses gears, chances are the perfect balance is between teeth on some crankshafts so each engine due to manufacturing tolerances will be different. My two are different, one better than the other.
The vibration should only really be during the bite of the clutch and on acceleration and should smooth out at constant speeds but they are never as smooth as a Deaville for example.
The vibes cause no damage other than to shaking the mirrors and screen a lot. Another reason they are felt on the larger motors is the more robust engine mounting that doesn't damp the motor from the frame with void bushes as on smaller models.

Thank you very much Dave , donation very well earned - Happy New Year sir!

Anybody tried Dr.Pulley clutch to reduce vibrations on 500 engines ?
Anyway the cost is prohibitive  :wacko: