KymcoForum.com
General => General Discussion => Topic started by: Quick-Star24 on August 05, 2023, 04:32:28 PM
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Early spring I had a new tire put on the rear wheel after I took the wheel off myself.
Either right after putting the new tire and wheel back on or shortly after the bike started making a strange sound.
Was not sure if I could keep riding or not till I got it checked out. I did ride it but not a lot.
Just took it up to Cleveland Moto....the guy has a great Scooter business and sells Kymco's.
He got mad because I did not mention the strange sound when I emailed him and instead just wanted an appointment for thorough check-up and maintenance.
He said he has a few AK's still sitting in his shop for over 3 months or more waiting on parts.
So he did not want another scooter taking up space. I asked him when I got there to ride the bike and see what he felt was causing the sound. He had no idea after riding it.
A week later he calls to say the bike is done and mentioned the rear brake disc was warped. I HOPE HE IS RIGHT!
Just ordered the disc from bike-parts UK. I told him I rode it home 2 hours when purchased with the parking brake on. The guy at the dealership rode it out of the shop to the parking lot and I got on it and rode home, not knowing he had put the parking brake on.
But why is the rear disc just now in the last couple months making this sound?
He said I could still ride it and the brake works fine. I put new pads on it when I took the bike apart to paint it. I asked him if he was sure that sound was nothing major that could cause me my life and so forth and he said it is not anything major...it's the warped brake disc.
Jeff
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Good call on replacing the disc. Not good for that to be warped since a warped disc can cause premature wear of the pads and other brake issues as well as possible tire issues.
I wouldn't ride it outside the neighborhood with a warped disc since braking might be unpredictable depending on how bad it is.
Surprised the issue didn't really show up until the rear wheel was removed/replaced unless it is just slightly warped. But still even then it would not be good to leave it that way.
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Good call on replacing the disc. Not good for that to be warped since a warped disc can cause premature wear of the pads and other brake issues as well as possible tire issues.
I wouldn't ride it outside the neighborhood with a warped disc since braking might be unpredictable depending on how bad it is.
Surprised the issue didn't really show up until the rear wheel was removed/replaced unless it is just slightly warped. But still even then it would not be good to leave it that way.
I cannot believe these discs can get warped....and as I was saying in my post I HOPE IT IS THE DISC that is making the sound I hear. The guy at the shop could possibly be wrong. Of course he did not take the disc off and inspect it.
So I'm replacing it and we'll see if that solves the weird sound situation.
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Easy way to determine if it is warped. Put the bike on the center stand and run the engine up over 2000 rpm to spin the rear wheel. Watch the disk from behind and see if it wobbles in the caliper at all... even a very little bit. May have to put your finger on it while also against the caliper to feel if it wobbles. It shouldn't. The caliper is bolted to the frame so is very stationary.
I can see a brake disk becoming warped due to being overheated. Riding it with the parking brake on would cause a lot of drag and make a LOT of heat. I can also see the disk becoming warped from bad handling while replacing the tire. But that would take a lot of force and likely be VERY obvious while the wheel is spinning.
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I can see that riding "for two hours" with the parking brake on could warp even a heavy disc. Pads must have stunk, too.
I was getting my flat tire replaced on my Forza 300 one day. I noticed a tech working on a scoot like mine and wandered over to ask what he was doing. "Replacing the disc. Rider rode for miles with the parking brake on!"
This made me aware of the damage, (not warrantied) that I could cause if I were to make the same mistake.
Stig
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I can see that riding "for two hours" with the parking brake on could warp even a heavy disc. Pads must have stunk, too.
I was getting my flat tire replaced on my Forza 300 one day. I noticed a tech working on a scoot like mine and wandered over to ask what he was doing. "Replacing the disc. Rider rode for miles with the parking brake on!"
This made me aware of the damage, (not warrantied) that I could cause if I were to make the same mistake.
Stig
Stick to the asparagus band parking brake Stig!
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Stick to the asparagus band parking brake Stig!
Absolutely....keen eyes can spot them in my every photo!
You know - you can't drive off with that thing on your right grip - just one more safety feature from our vegetable growers!
Stig
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Yep, I paid nearly £5 for my hi-tech solution, you got yours for free!
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Easy way to determine if it is warped. Put the bike on the center stand and run the engine up over 2000 rpm to spin the rear wheel. Watch the disk from behind and see if it wobbles in the caliper at all... even a very little bit. May have to put your finger on it while also against the caliper to feel if it wobbles. It shouldn't. The caliper is bolted to the frame so is very stationary.
I can see a brake disk becoming warped due to being overheated. Riding it with the parking brake on would cause a lot of drag and make a LOT of heat. I can also see the disk becoming warped from bad handling while replacing the tire. But that would take a lot of force and likely be VERY obvious while the wheel is spinning.
I'm still not getting notified when there are responses here.....and I often forget to come back and check....anyone who knows me or is around me much knows I have the World's worst memory....and I blame my Monkey Mind racing with a 1,000 things on my mind at every moment....I do pay attention to people when they are looking at me and talking....but subconsciously....obviously....my mind is secretly on something else and so I forget what I heard within minutes.....this is exactly why many millions of people all over the world....except in the USA meditate....to shut down the Mind (Devil) and open a space for a Divine connection....LOL that's it for the Spiritual talking.....please forgive me!
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I'm still not getting notified when there are responses here.....and I often forget to come back and check....anyone who knows me or is around me much knows I have the World's worst memory....and I blame my Monkey Mind racing with a 1,000 things on my mind at every moment....I do pay attention to people when they are looking at me and talking....but subconsciously....obviously....my mind is secretly on something else and so I forget what I heard within minutes.....this is exactly why many millions of people all over the world....except in the USA meditate....to shut down the Mind (Devil) and open a space for a Divine connection....LOL that's it for the Spiritual talking.....please forgive me!
So, you mentioned 2 weeks ago you were getting the disc replaced.
Did you, is the noise gone?
And sorry, we do not notify you that someone has taken the time to respond to your request for assistance.
hope you got it sorted!
Stig
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And sorry, we do not notify you that someone has taken the time to respond to your request for assistance.
Stig
I do get an email prompt Stig?
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I noticed some email prompts from the site recently, too...there is a 'Notify' button up top to the right of 'reply'.
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I noticed some email prompts from the site recently, too...there is a 'Notify' button up top to the right of 'reply'.
Hey Hawk - thanks.
Never noticed that!
Might have been there for some time?
Problem is - I never do two things:
1) answer the land line phone
2) check my emails
I know, I know - no telling how many calls I've missed from the last 3 presidents!
Stig
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Whats a "land line phone?"
Oh, yeah. I remember. I disconnected mine about 18 years ago and put a solid cover plate over the connector box in the wall.
Too many spam calls and NO calls that mattered to me on that line.
I now have Google call screening that automatically screens my calls so I very rarely get any of those presidential calls on my cell phone. If my cell phone actually "rings" then that's the only strange sound I hear on or off my AK 550.
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Whats a "land line phone?"
Oh, yeah. I remember. I disconnected mine about 18 years ago and put a solid cover plate over the connector box in the wall.
Too many spam calls and NO calls that mattered to me on that line.
I now have Google call screening that automatically screens my calls so I very rarely get any of those presidential calls on my cell phone. If my cell phone actually "rings" then that's the only strange sound I hear on or off my AK 550.
land line is all I have, I can't say attached to a copper wire, cause we've had fiber here for 35 years
with caller ID, we have screened out the junk calls to the point that we get fewer and fewer, almost none now. The majority of my spam comes by snail mail
I think my AK sounds like a 50hp outboard motor most of the time but with the street sound of slight burbling under decel
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So, you mentioned 2 weeks ago you were getting the disc replaced.
Did you, is the noise gone?
And sorry, we do not notify you that someone has taken the time to respond to your request for assistance.
hope you got it sorted!
Stig
No, I still have not replaced the disc.....it was delivered but not installed....yet....I now have a fork seal issue and it seems you have to take just about everything on the front end off to work on the forks. all the plastic, screen/monitor/gauge cluster, everything and man am I dreading that. Cyclepedia shows you how to do it but I hate tearing into things and then having trouble getting all back together perfectly. No idea how to know how much fork lube has been lost or leaked out but it's a good bit.
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No, I still have not replaced the disc.....it was delivered but not installed....yet....I now have a fork seal issue and it seems you have to take just about everything on the front end off to work on the forks. all the plastic, screen/monitor/gauge cluster, everything and man am I dreading that. Cyclepedia shows you how to do it but I hate tearing into things and then having trouble getting all back together perfectly. No idea how to know how much fork lube has been lost or leaked out but it's a good bit.
I had a slight fork oil seepage on mine. Had that on my Burgman and CTX1300 and ST1100 too. Fixed all of them without removing any plastic or any fork tube. Used a tool called a Seal-Mate cleaning tool. Pulled down the dust seal around the fork and then worked the Seal-Mate up under the oil seal and swiped all the way around the fork tube to pull out any grit that does get into the seal. Pushed the dust seal back in place and problem solved! I used the official Seal-Mate tool the first time and then made my own for a few other times that I needed it.
Most leaks are due to grit that gets between the seal and fork tube. If you haven't lost too much oil the Seal-Mate is the way to go. You should be able to tell by how much fork oil has dribbled down onto the brakes. If there is any oil on the brakes you'll need to replace the pads. If there is a lot you'll need to replentish the oil and that does require disassembly.