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Messages - KTIzkhanilov

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1
Agility 50 / Re: 2008 Agility 50 rattling at speed
« on: July 08, 2012, 07:12:56 AM »
..well, that sounds like sh**!..lol..

Yes.  But what kind of sh** specifically?  ;)

2
Agility 50 / Re: 2008 Agility 50 rattling at speed
« on: July 08, 2012, 01:05:27 AM »
Get a "page not found"
BUMP:  Link fixed.

3
Agility 50 / Re: 2008 Agility 50 rattling at speed
« on: July 07, 2012, 11:09:45 PM »
 There are LOADS of vids... I would pull the cover. You may be loosing your belt. The buzz may be a spinning thread from the belt? Or a loose variator. The fan will hit, and buzz

Thanks so much!  this video clarifies alot.  I'm more confident about opening up my scooter's drive system now that I see how simple it is.

I went out and got a recording of the sound I'm referring to, seeing as it's kind of difficult to explain..
Listen to this:
http://www.mediafire.com/?dgpg51zfskdidp2 (Recorded with cellphone, quality might be lacking)
The sound that I've been trying to describe can be heard at around 5 seconds

Don't quote me on this, but it APPEARS to be coming from the components featured in the video I quoted.
Thoughts?

4
Agility 50 / Re: 2008 Agility 50 rattling at speed
« on: July 07, 2012, 03:09:07 AM »
http://www.kymcoforum.com/index.php?topic=4739.0

Kinda hard to tell cuz I'm sitting here with friends while they watch a crappy movie, but I believe my noise is the same as the one in this link, the third video down.

Soon as my friends leave I'll turn up the volume and confirm hahaha

I checked out the video you mentioned, and to tell you the truth, the sound isn't that intense.
It comes and goes, and sounds more like something is bouncing around than something is rattling... it's hard to explain.

While I'm posting, there are a few patterns I've noticed:

- While riding the scooter with a cold engine, the wheels lose torque for a split second at a time.  This happens every 4-5 seconds at random, and often isn't too serious.  When this happens it sounds like the RPM drops a little and returns to normal as the wheels regain torque.

- Once the engine has warmed up, the issue seems to back off a little bit, and happens less.

- This issue occurs more frequently and worse in hot weather.  I rode it this evening with temperatures in the mid 70s and it performed better than it has been.

- Easing up to speed helps to avoid causing the issue.  If you ease up to speed and be gentle with the throttle, not opening it completely to accelerate, the issue occurs less frequently, and the moped performs better overall.  Punching the gas, so to speak, only serves to make performance worse.

- The rattling stopped mid-ride and was replaced with a very faint but detectable buzzing noise.  To experience this noise, go find a bicycle and begin spinning the back tire with the pedals, then grab a leaf and set the leaf just barely against the spinning rubber.  The grinding-buzzing you hear is the closest sound I can describe.  It was very, very faint.

- These sounds seem to be coming from the belt drive box.

Edit:
The 'variator' seems to be the word of choice in this thread.  I find no reference of it in the manual I printed off.  Are there any threads/videos that detail how to maintain or replace a 'variator'?

5
Agility 50 / Re: 2008 Agility 50 rattling at speed
« on: July 01, 2012, 05:19:20 AM »
Thanks for all the advice, guys.

Here are a few updates; it turns out the OP isn't exactly accurate.  The scooter does not run fine.
It was working earlier today, and I rode it for a solid half hour so I assumed the performance issues were a thing of the past.

I've been having these performance issues off and on since I got the carb cleaned.  When riding, the scooter misfires almost consistently... and sometimes when it does, it feels like the wheels are losing torque for a split second.
On the way home from work I heard a loud "pop" from the left of the bike.  This only happened once in the ten-fifteen minute ride home.

The rattling also got worse.  It rattled without pause all the way home.
I'm worried.  Is something seriously wrong?

6
Agility 50 / 2008 Agility 50 rattling at speed
« on: June 30, 2012, 07:33:56 PM »
Hello, fellow Agility owners!

I've had my little Agility for almost exactly a year now.  It's been a maintenance headache up to this point.. but how much I save on fuel and insurance is reason enough to keep on going.
Plus, I think we can all agree, Kymcos are fun scooters.

So here's the story... The scooter is a 2008 model with 8100 km on the clock.
I've recently had the carbuerator jetted and cleaned, and the engine was replaced over the winter.

Currently, the scooter runs fine... but something is worrying me.  Getting up to speed (30-40mph) is no issue, and doesn't rise any concerns.
But when I'm at speed, traveling between 30 and 40mph, something disconcerting happens.  A rattling sound can be heard coming from under the scooter... (and this is just for the sake of clarity) it sounds like something small is bouncing around inside the engine... kind of like when you drop a piece of plastic into a fan.

Note: This only happens when the throttle is fully opened (grip completely pulled back) and the bike is traveling at speed, as described above.

This worries me, because I'm afraid if it goes ignored it could lead to another new engine!
What are the probable causes and solutions?

Thanks in advance, fellow riders

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