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Post by codazoda on Aug 30, 2011 21:18:14 GMT -5
I have a 2007 Zingyue ITA 150 (BMS Pathfinder 150) with 1500 miles on it. The front wheel has a bit of play in it, about the width of two quarters. Can someone with this same scoot tell me if you have similar play in the front wheel?
I pulled the front wheel off to inspect things. The wheel bearings seem fine and they turn freely. They can be pushed left and right about 1/16". This is where the movement comes from, I imagine. The bolt is not adjustable and the spacer seems completely tight to the wheel bearings when assembled. Those bearings can travel just a little left and right though.
If it's not normal, any suggestions?
[youtube]For those of you with a BMS Pathfinder 150, do you have some play in the front wheel? Here's a video of the movement in mine. I fear something is wrong here.
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Post by Premier Scooters on Aug 30, 2011 21:24:48 GMT -5
you should not have any play there. Have you tried tightening your front axle nut?
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Post by codazoda on Aug 30, 2011 21:28:14 GMT -5
Yup, it's tight. If I remove the wheel I can push the bearings left and right, slightly, in the wheel. How do they get tightened from factory? Can someone press them for me?
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Post by ♣Luke♣ on Aug 30, 2011 21:32:31 GMT -5
dude, you are missing the spacer...it should be located on the other end(not seen on the video)..
spacer should be there to prevent slack.
...and can you post a pic of the other end of the front wheel.,so we can see of the freakin' spacer is still there or already gone with the wind....
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Post by codazoda on Aug 30, 2011 22:24:48 GMT -5
I could be missing a spacer, but I can't find any information on the part I might be missing online. I took this apart and looked at it. Here's what the axle looks like. It does have a spacer on it (pictured on the bolt).  Here's a picture of the other side of my wheel. The red arrow points to the spacer and the blue arrow points to a rubber washer that I imagine is just keeping dust out of the wheel bearing (the wheel bearing is behind it).  There is absolutely no play on the spacer (red arrow). The wheel travels slightly on the bearings but the bearings are mashed tight (left to right). The speedo gear won't budge when attached but I'm unclear what is holding it in place. Must be pushing on the other side of the wheel bearings. It very much seems like the wheel bearings are just not tight enough into the wheel hub. They don't fall out though, they just move left and right about a 16th of an inch. Finally, if I am actually missing a spacer of some sort, I suspect it would actually go where I've drawn it in green below. If you have an ITA 150 (Pathfinder 150), please have a look and let me know if you have a spacer here.  |
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Post by TERRA NUVO on Aug 31, 2011 9:30:54 GMT -5
sorry to see this fella.
there is no spacer on my pathfinder
you may have worn away lost metal on the rim it self.
what ever the case do not ride that bike.
you may need new rim, baring and Axel and maybe speedo spacer.
go to www.bmsmotorparts.com/index.php
i would if you can afford it replace everything no screwing around.
I have 90 weight oiled that baring every 3 months since i got bike.
don't under estimate the speed o coupling it serves as a stabilizer too.
if your broke start with the bearing.
but don't let it go any longerrevision
call bms and tell them you have a pathfinder and explain the situation, they have one of the best china bike quality controls in the business
BMS MotorSports1201 Jellick Ave City of Industry, CA 91748 Tel : 626-810-8877 Fax : 626-810-2288
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Post by Premier Scooters on Aug 31, 2011 17:08:08 GMT -5
Your problem may be that your spacer in the wheel between your bearings inner races is too long. That would not let both bearings fully seat in the wheel at the same time. The way you would tell if that's the problem is to take the wheel off and take one of the bearings out. It looks to be pretty loose so it should just come out. Take something with a flat edge that will fit into the wheel where the bearing is and see if it touches the bearing seat and spacer at the same time. If it only touches the spacer but not the seat then your inner spacer is too long. If that's the case then you can carefully shorten the space until it lines up perfectly with the bearing seat.
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Post by codazoda on Aug 31, 2011 18:12:32 GMT -5
Contacted BMS who asked for a VIN and then said they couldn't help me, even though the manufacturer is the same. I presume BMS is just the distributor and mine isn't a BMS. The scoot is stamped Xingyue.
I suspect the space between the bearings is either too small or too large. I'm thinking too small because the bearings are between "stops" in the wheel and can move left and right between those. The do not come out though. Granted, I haven't tapped on them, but I've tried to pull them out with my fingers and that definitely isn't happening (even though I can move them with my fingers they stop at a certain point and won't come out farther).
I may take this scooter to a shop and have them look at a few things. My back brake is also dragging on the rotor. I bled that system today and it didn't help. I'll probably get a quote from a qualified mechanic and then throw in the towel if it's more than a few hundred in repairs.
Joel
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Post by sprocket on Aug 31, 2011 18:43:17 GMT -5
>>My back brake is also dragging on the rotor.
That is the way they work.. there are no return springs... the pads float...
I would be cranking on that front wheel bolt...it is easy to draw the forks together...
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Post by codazoda on Aug 31, 2011 21:53:56 GMT -5
Okay, so you're giving me some confidence that my issues are fairly easy to solve...
I've tried to tighten the bolt again and it is *tight*. I don't dare push it any farther. But, if the forks will mash together, as you say, then I think "Premium Scooters" was right when he said the spacer is too big. At first, I didn't think so, since it fits tightly, but I didn't realize the forks could be squeezed together.
I'll try to find a replacement spacer that's a bit shorter. Not sure if this is something I can just pickup at my local hardware store.
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Post by codazoda on Sept 2, 2011 9:56:50 GMT -5
Okay, it's been a week or so and I now have a new theory about what's wrong here. There are two spacers in the front wheel. One goes between the ball bearings and the other goes outside the wheel to hold it toward the speedo gear (opposite side). These spacers are different sizes. I suspect that the original owner swapped them, putting the small spacer inside the wheel and the large spacer outside the wheel. Here's a diagram of the parts. The red and blue arrows point to the spacers that I now believe are swapped.  I'll tear it apart this weekend and let you know if that solves the problem. I suspect that the ball bearings are not reusable and that I'll have to buy new after tapping them out of the wheel with a socket. We shall see. |
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Post by sprocket on Sept 2, 2011 11:05:42 GMT -5
WOW.. that is great deduction Sherlock!!!
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Post by codazoda on Sept 6, 2011 16:06:54 GMT -5
My theory about the swapped parts turned out to be wrong. I got my Dad's help and we spent the day messing with different configurations. We ended up fabricating several parts ourselves in order to get a tight fit. The fabricated parts included cutting a new (shorter) spacer out of a piece of steel tubing and drilling washers to the exact sizes we needed to use as shims. The new spacer was fabricated from a piece of steel from the steering of a 1939 Ford. My Chinese scoot is now part American Classic Car. Here's a drawing of all the new parts in the axle. The light grey parts are all original. The dark grey are the original 12mm ball bearings. The red parts are the new shims, made of stainless steel washers with new center holes drilled to size. The blue part is the replacement spacer (I opted to make a new spacer rather than shorten the original). On one side the spacers push the ball bearings farther out into the wheel stops touching only the outside (non turning) edges of the ball bearings. On the other side they increase the size of the center spacer, touching only the center (turning) part of the ball bearings. After assembly there is absolutely no play in the front wheel, it turns fairly freely and there is no noticeable metal on metal grinding. I'll keep a very close eye on this as I put a few miles on the scooter but it feels like a significant improvement.  |
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