KymcoForum.com
Scooters - 125 to 300 => Xciting 250 => Topic started by: Pavel_proo on March 12, 2021, 11:12:03 PM
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Hello everyone, I was lucky enough to get my hands on a 2009 250ri. With super low mileage. It pretty much didn't move until I purchased it. Upon purchase I have immediately noticed that the bike vibrates(mostly feels at floorboards) at rpms higher than 6500 and at speeds above 62mph or so. I have already replaced both original tires and balance wheels, not much difference. I have went further and replace the belt, what improved things slightly, but not enough. I have already checked valve clearances and adjust properly. Any suggestions as to where else to look?
Otherwise the scooter seems to drive just fine with good acceleration, etc.
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Helkp us out: what is a "250ri"??
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I know your getting close to red line on the tach so I could see a little added vibration. I had a vibration on my 09 250 RI above 55mph but mine was a front wheel out of balance. Previous owner had new City Grip's installed and balanced but the front tire was off balance.
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Helkp us out: what is a "250ri"??
(https://i.postimg.cc/15wkYJB6/ri.jpg)
Stig
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Define "super low mileage"? If less than 3K miles, I'd say wait until it's done a few more before looking to fix any "problem". I had similar with my X-Town 300i from new and this all but disappeared at about 3,000 miles. I put it down to full smoothness (if a single-pot bike can ever be classed as "smooth") not being reached until the scooter is properly broken in?
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Vibration in sync with road speed or engine speed?
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Vibration in sync with road speed or engine speed?
I'm guessing it will be engine speed (mine was) rather than an unbalanced wheel?
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It seems to be more engine speed related.
I am still not sure where to look.
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Define "super low mileage"? If less than 3K miles, I'd say wait until it's done a few more before looking to fix any "problem". I had similar with my X-Town 300i from new and this all but disappeared at about 3,000 miles. I put it down to full smoothness (if a single-pot bike can ever be classed as "smooth") not being reached until the scooter is properly broken in?
280 miles at time of purchase 8)
1500 now
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I'm guessing it will be engine speed (mine was) rather than an unbalanced wheel?
Engine speed, may have a stuck or damaged roller in the variator..
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Engine speed, may have a stuck or damaged roller in the variator..
I got Tech Pulley Flying Roller II sliders installed today. Will report tomorrow as to how that worked out.
By the way Tech Pulley is supposedly a next gen of Dr. Pulley and claims to be even better preforming.
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Sorry for no updates. Bike doesn't start. Will update once fixed.
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So, got the bike fixed all good now.
However as for vibration it seems perfectly smooth up to about 65 mph when vibration starts and gets gradually worse with 70+ being uncomfortable quite a bit. With new sliders the cruising rpm went down so that's probably why the vibration now starts at a higher speed. So it is definitely engine speed related and not ground speed related.
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So, got the bike fixed all good now.
However as for vibration it seems perfectly smooth up to about 65 mph when vibration starts and gets gradually worse with 70+ being uncomfortable quite a bit. With new sliders the cruising rpm went down so that's probably why the vibration now starts at a higher speed. So it is definitely engine speed related and not ground speed related.
65 mph on mine is red line. What's red line now with the new sliders?
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65 mph on mine is red line. What's red line now with the new sliders?
I tried pushing it to 80mph(8000+ rpm) yesterday two up and it did fine except for engine vibration.
Right now 65mph is just slightly over 6500rpm. 23g tech pulley flying roller II sliders and malossi belt.
I am actually starting to think that what I describe as a vibration is really a normal motor vibration for a a 1 cylinder.
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I am actually starting to think that what I describe as a vibration is really a normal motor vibration for a a 1 cylinder.
Nailed it! I share that opinion. Learn to love the character, it’s like a BSA C15 without the noise or the oil leaks!
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Small update. I ended up ordering a pair of foam grips so hope that should help somewhat.