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Post by damin69 on May 27, 2011 22:30:17 GMT -6
We are going to call a local Dealer in the am see if they have any belts that size if not we will use the smaller one for now.
Not really sure how many miles are on the belt it has been on it since he got it 2 years ago. Now I figure if the belt is that bad the Roller have to be pretty bad also. I do not the Variator has been off this thing before the Air Impact would not break it loose. We soaked it down with PB Blaster and will let it sit over night and try again in the am. Need to clean the whole engine up as there is one of the seals somewhere seaping oil as the whole engine is coated in oil. It will be a very busy long day in the Garage tomorrow......
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Post by damin69 on May 27, 2011 21:34:02 GMT -6
So with that said this belt is an 871x23
How much would he be loosing using one of my 856x23 until we can get the correct belt. I figure he will loose a little top end but that would be about it.
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Post by damin69 on May 27, 2011 21:29:39 GMT -6
Ok well Got new tire put on today. And well it 100% took care of of the Rubbing issue. It did not get me my RPMs back. I am able to still only hold 5000 rpms.
Free wheeling it will give me 8000 but get it out on the main hiway and it just has no topend. In town is great and low end power is great. Top end is just dead. So guess I will be pulling the plug and checking engine compression.......... :-(
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Post by damin69 on May 27, 2011 21:26:08 GMT -6
The heading is just sarcasm. Working on my Dads scooter this weekend. 2006 Linhai Mainstreet 260. We are doing a Valve adjustment and said we really need to get to taking a look at that variator and belt situation that is when we found this...... WOW  |
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Post by damin69 on May 25, 2011 19:11:01 GMT -6
My dad has the Linhai Mainstreet 260 that thing is twice the scooter my Jonway and Roketa are....
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Post by damin69 on May 23, 2011 18:24:33 GMT -6
Ok this will tell you exactly how close the tire is to the motor case. This is a piece of 1/4" ply that I cut a 1/2" wide x about 6" long piece off of.  Couple of Pics just showing the relation of tire to case.   Now with the piece of ply that I can not even get between tire and motor. So my Clearance is actually less than 1/4 Inch...... :-(  |
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Post by damin69 on May 23, 2011 12:37:27 GMT -6
I wouldn't think that there would be enough centrifugal force on the tire at 50 or 60 mph to really change it's diameter that much, but it certainly is something to take into consideration. Jr's specs say that you will have 1/4" less clearance with the larger tire. The tire should still have plenty of clearance. What brand of tire is this? Some brands will have a slightly larger diameter than others. Maybe you have a really stretchy tire? Can you feel any play front to back on the rear wheel? If nothing is obviously wrong, I would go back to the original size tire. The tire is an Avon Not sure of the model. Like I said There is not noticeable wobble so not seeing any signs in that aspect of alignment. The scuff that the rub causes on the tire is directly in the center all the way around so no signs of aligment issue that way. (why can nothing be OBVIOUS on these things :-() And as far as going back to the original tire size that is the next try. Which is why I am wondering about the Wheels. If the 13" on Jonway is the same as the 13" on the roketta. I have not taken them both off yet to try and swap but I think I am going to try. Since my Jonway is not running yet. |
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Post by damin69 on May 23, 2011 11:58:09 GMT -6
The 140/60 tire is only .4" wider overall than the 130/60. This means .2" less clearance on either side of the tire. I think most scoots would have enough initial clearance to accommodate the larger tire with no rubbing. I would check the mounting of the wheel to see if there is an alignment problem. Hopefully there are no damaged components which could mess up the wheel alignment. It would also be a good idea to check side to side wheel play. As far as I know there should be none. OK....... Alignment then?  ?? the tire doe not have wobble back and forth... The stock mounting bracket on muffler side is on. So guys you have to help me out here. What is going to cause an alignment issue? I can only tell you what I have for clearance. I realize there is a serious problem as there should be more clearance which my scooter does not have. I just have no Idea where to start if there is no Obvious signs of missalignment? There are no adjustment screws on the Mounting bracket with the bearing in it. And the CVT Housing has no adjustments that I am aware of. So where do I start? |
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Post by damin69 on May 23, 2011 11:01:50 GMT -6
I was looking at the clearance on mine yesterday since I have everything off it and have a very clear view of the clearance between tire and engine. I didn't measure it but the old carpenter in me said it was about 3/4", no less, maybe a hair more. I took a picture too if you want to see it. I can also get an actual measurement if you want. Mine has the 130/60/13 tire, though it is getting worn now, at 5k. I'll need to replace it soon. Jeff. I can not even stick my Pinky between the tire and motor and I have small hands. |
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Post by damin69 on May 23, 2011 9:36:55 GMT -6
Ok Things are getting becoming clear. So with the 140/60 on the scooter I have about 3/8" clearance between tire and motor.
So here are the results from JR on tire sizes
130/60/13 : 5.1"W x 19.1"T
140/60/13 : 5.5"W x 19.6"T
With this that means that there is .5" diameter difference.
So why does it not rub all the time.
Ok Early morning has been like 40 degrees rubber is HARD. it does not expand so never had any issues riding in to work and was able to hold good hi-way speed.
Warm up in afternoon tires warm up rubber gets soft start riding and tire starts rubbing against motor causing drag. No issue driving through town or starting out but the tire is not spinning fast enough to balloon out to hit........ :-)
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Post by damin69 on May 22, 2011 20:32:53 GMT -6
There is definitly something wrong in this area. The part of the tire that is rubbing is all the way around the tire dead center about 1 inch. It is an avon tire not sure if the tire is just out of round or what but between the tire and the motor there is less than 1/2" of clearance so I am not sure how much the tire balloons out as it spins but on this bike it is fast enough to rub against the motor. As long as I am going less than 40 there does not seem to be any problem but over that and it causes drag. I think once I figure this issue out I may have a decent scooter to ride..... Man why do these things have to happen. If they had a BAD Luck Lottery I would Win every Time....
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Post by damin69 on May 21, 2011 20:28:57 GMT -6
Cool Thanks Jeff. I will give that a try I have put my Brake LEDs in anyway.
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Post by damin69 on May 21, 2011 20:25:40 GMT -6
Well that is the thing. The drag is not on the sides. as the tire spins it balloons and there is a strip that is about 1 inch wide right at the center of the tire all the way around you can see has been rubbing and I could see it hitting the motor when it was on the stand. I believe this is causing drag. Being wider gives it more tire to balloon. Maybe I am wrong in that thinking but there just is not much room between tire and the motor.
Now I know when my tire went flat on my other scoot it rubbed really bad on the side wall as these low profiles mushroom out when the go flat and that is the way this drag feels when I go down the road on this one.
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Post by damin69 on May 21, 2011 15:54:59 GMT -6
Ok so last night and today. We changed out carb and Variator no diff. I put Electric Fuel pump on. Wow huge diff on starting.
So now on to the question and possible answer to my problem.
I come back and I put scooter up on Center stand and I twist thottle it goes up to like 6000 then I let off and it then goes up to 8000 just as I let off. I can smell burning rubber. I look sure enough the tire as I am hitting High RPMs is rubbing agains the Case.
So I look at the tire size it is a 140/60 -13
So I look up online the Stock sizes says it should be 130/60 -13
So I am thinking that my issue with not being able to hold speed or pick up speed is because I have this huge Drag issue with the tire.
What do you all think?
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Post by damin69 on May 20, 2011 13:02:03 GMT -6
DB give them a try. I am not 100% on the pitch 1.25. just try turning them in if they do not screw in easy DO NOT force them as you will cross thread then you are up a creak if they do not screw in all the way by hand to the point you are snugged up against the muffler bracket the pitch is wrong.
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