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Post by rdhood on Dec 8, 2014 0:17:53 GMT -5
First me: complete scooter newbie. Last winter, I rebuilt a John Deere mower and transmission. Didn't know anything about them before I started.
This winter, I am doing a 150cc scooter project. Today, I purchased a 2013 Pioneer 150-T (says Jonway QT-150 on the cert of origin) for $400 (with helmet and cover). It has 300 miles. It starts and idles. With that, I am going to do all of the little things to it that one would do on a brand new scoot to make it more... stable.
But the one thing that the previous owner did point out that I am looking for direction on is this: when you put the scooter up on the kickstand, the front wheel/bars will turn to the right. He said that it is supposed to stay centered. He said that the result is that there is a tendancy to pull to the right while riding, and said the shop estimated a $100 fix. What am I likely looking at here? Something hit or bent? I am sure that these things have something akin to a bicycle headset... perhaps it is indexed somehow to hold center, and that is now failing? I am just trying to figure out where to look for the problem is.
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Post by JerryScript on Dec 8, 2014 1:28:57 GMT -5
Do you mean on the center stand, or the kickstand? The center stand is the one you step on and raise the scooter, lifting the rear wheel off the ground. The kickstand is the one that leans the scooter to the side.
The kickstand will have a tendency to turn the wheel, affected by any incline you may be on a bit, but mainly by the side the kickstand is on (pretty much always the left).
The when using the center stand, the front wheel should only be affected by an incline the scooter is on. If on flat ground, the front wheel should remain in whatever position you put it in, and should not have a tendency towards any direction.
If it your front wheel does have a tendency to pull, first inspect the front wheel and tire, the tire will probably show uneven wear (see below), the wheel should spin straight. Next, you need to pull off the front plastics and inspect the front end. Look for any bent parts, then look for any bent connections. If you don't find any obvious bends, check the bearings for smooth operation throughout their motion. Post some pics or a vid if you can, we may be able to spot something for you.
A note about uneven tire wear: An old tire with uneven wear put on a good bike could be the cause of the turning tendency, and not a symptom.
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Post by rcq92130 on Dec 8, 2014 2:16:44 GMT -5
OK, I think you have some wrong information.
The steering column is not biased either toward one side nor to the center. It's simply a shaft supported by a bearing. The bearing causes it to turn very easily, so when the front wheel is off the ground the only thing that prevents the whole front assembly from turning is the friction of the bearings, which is very little.
So --- if there is any slight leaning to one side, or if one side is slightly heavier than the other, it will tend to cause the wheel (when off the ground) to turn in that direction. There just isn't anything that prevents it from turning.
Now - maybe there IS some sort of damage to the fork that is creating the tendency. It's pretty strange the seller would mention this. Does the thing tend to the right when you are riding it? Is there are obvious damage (bent rim, dent, etc.)? If the scooter tracks straight when you are riding it probably all is OK.
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Post by rdhood on Dec 8, 2014 9:44:32 GMT -5
The when using the center stand, the front wheel should only be affected by an incline the scooter is on. If on flat ground, the front wheel should remain in whatever position you put it in, and should not have a tendency towards any direction. This. When put on the center stand, the front wheel will flop over to the right rather than staying centered. When brought back to center, it will flop over the right again. |
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Post by toddmaples on Dec 8, 2014 10:11:45 GMT -5
The when using the center stand, the front wheel should only be affected by an incline the scooter is on. If on flat ground, the front wheel should remain in whatever position you put it in, and should not have a tendency towards any direction. This. When put on the center stand, the front wheel will flop over to the right rather than staying centered. When brought back to center, it will flop over the right-hand again. Check that the bars is in line with the tire. Center tire and check location of handlebars. Adjust as needed by loosening neck bolt and retightening in desired position. In my experience this is the only thing that'll make a bike "pull" unless something is bent or damaged. By neck bolt I mean the bolt going through the bottom of the handlebar assembly and the top of the fork assembly. If you cant find it let me know and ill posta pic if I can. |
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Post by rdhood on Dec 8, 2014 10:34:15 GMT -5
Will do. I'll take it apart and have a look
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Post by jarednh81 on Dec 8, 2014 11:31:07 GMT -5
What side is your brake on? I have a 50cc thats is on the right and it will always flop to that side when i put it on the center stand my 150 is front heavy so it sits on the front tire when on the center stand but it tou push down on the back end the front tire will go to the left which is the side the brake is on.
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Post by toddmaples on Dec 8, 2014 14:08:09 GMT -5
Will do. I'll take it apart and have a look if the hole is wallowed out you may have to torque down on it real hard to get it to stay. Last one I done needed a 28" 3/8dr ratchet to tighten up good enough where vibrations wouldnt loosen it over short periods of time. |
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Post by shalomdawg on Dec 8, 2014 16:29:20 GMT -5
howdy, i was going to comment on the op but ain't touchin' it now----you're on your own
lotsa miles and smiles to ya
ken
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Post by scooter on Dec 8, 2014 19:00:09 GMT -5
Will do. I'll take it apart and have a look if the hole is wallowed out you may have to torque down on it real hard to get it to stay. Last one I done needed a 28" 3/8dr ratchet to tighten up good enough where vibrations wouldnt loosen it over short periods of time. Don't listen to these yankees, Todd. They're just jealous because their food is horribly bland!  |
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Post by rcq92130 on Dec 8, 2014 19:50:24 GMT -5
if the hole is wallowed out you may have to torque down on it real hard to get it to stay. Last one I done needed a 28" 3/8dr ratchet to tighten up good enough where vibrations wouldnt loosen it over short periods of time. Don't listen to these yankees, Todd. They're just jealous because their food is horribly bland! And so, all he could do was to play back one of his tired, used up food insults.  |
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Post by JerryScript on Dec 8, 2014 20:58:51 GMT -5
OK, let's get back on track here or we may have to clean this thread up. Please keep the conversational tone to that of one you wouldn't mind having in front of your children.
NOTE -- This thread has been cleaned!
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Post by scooter on Dec 8, 2014 21:57:59 GMT -5
Don't listen to these yankees, Todd. They're just jealous because their food is horribly bland! And so, all he could do was to play back one of his tired, used up food insults. I've got something you can eat.  |
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Post by geh3333 on Dec 8, 2014 22:00:43 GMT -5
OK, let's get back on track here or we may have to clean this thread up. Please keep the conversational tone to that of one you wouldn't mind having in front of your children. Sorry bud , will do . |
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Post by oldchopperguy on Dec 8, 2014 22:51:16 GMT -5
For what it's worth, on both my old Xingyue 150 and my "new" old Kymco 250, the fork turns very easily and smoothly. So... when on the center-stand, the fork will "flop" either LEFT or RIGHT if the bars are turned much past center... Especially if the front wheel is off the ground, as when the trunk is full of groceries...
If your scoot pulls to one side, it may need some attention, possibly having something out of line.
Best wishes on a fix!
Leo in Texas
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