Author Topic: CVT belt life expectancy?  (Read 9696 times)

kbshaq

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CVT belt life expectancy?
« on: August 08, 2014, 06:01:21 PM »
Does anyone have experience on the life expectancy of the CVT belts?
These belts aren't the easiest to get to to check for wear or cracks on the belt, that's why I'm asking.  :)

Thanks in advance!

kfc.android

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Re: CVT belt life expectancy?
« Reply #1 on: August 08, 2014, 08:44:51 PM »
As you might already know, it depends on your riding style.
I ride very aggressively and constantly @ high rpm, so I check my belt every 3000 miles or so, last time I check it was 9300 miles, and it's still in very good condition.

Chris0381

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Re: CVT belt life expectancy?
« Reply #2 on: August 08, 2014, 11:13:04 PM »
They will initially shed dust then after cleaning out the dust hardly shed anymore, thats been my experience.
2013 Super 8 50cc 2T Air Cooled Mfg'd 2012
Stock pipe derestriction
Smooth Boss
6.5gm Dr Pulley sliders
Malossi Torsion Controller
Malossi Fly Clutch- yellow springs
Polini Variator
#95 Main Jet
Purple Malossi Contra Spring
42 MPH on the flats with the wind

Urbestfriend

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Re: CVT belt life expectancy?
« Reply #3 on: August 09, 2014, 12:23:40 AM »
Go to Grandvista Page.  Then page 3,  then go to line 15. "Shredded Belt"
Signed:  Urbestfriend

kbshaq

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Re: CVT belt life expectancy?
« Reply #4 on: August 10, 2014, 03:57:50 AM »
Thanks, urbestfriend.  Wow, your belt was blown to smithereens!  :)
Mine wasn't as bad, see attachment. :D

BettinANDlosing

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Re: CVT belt life expectancy?
« Reply #5 on: August 10, 2014, 05:03:15 AM »
It also really depends on the scooter. It's better to judge your belt by width. There is a spec in your service manual. I've NEVER seen a belt break before it was past it's service limit. Check the width with a micrometer and inspect for cracks or any defects.
2002 Kymco B&W 300; MRP 78MM "300CC", Naraku cam, Yoshimura rS3 exhaust, 17g Sliders, Yellow torque spring drilled airbox, stock carb #115 main #40 pj.

2001 "Yamaha" Zuma AKA MBK Booster; MHR OverRange, Dellorto 19mm BHBG, Polini "big" intake, RS-3 Rear shock, Stock cylinder.

blue

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Re: CVT belt life expectancy?
« Reply #6 on: August 10, 2014, 11:42:44 AM »
I replace mine every few years rather it needs it your not.most of mine stretch out of shape and will hit the starter bendex.good sign to replace belt.

kbshaq

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Re: CVT belt life expectancy?
« Reply #7 on: August 11, 2014, 02:45:56 PM »
I replace mine every few years rather it needs it your not.most of mine stretch out of shape and will hit the starter bendex.good sign to replace belt.

Yup, this will be my "credo" from now on.  :)
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blue

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Re: CVT belt life expectancy?
« Reply #8 on: August 12, 2014, 10:21:33 PM »
When I get belts I get 2 at a time. If I have to ill change mine on the side of the rd. Did it once

Chris0381

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Re: CVT belt life expectancy?
« Reply #9 on: August 13, 2014, 12:20:12 AM »
I just replaced my belt after 1500 Miles but mainly to have a spare also.
2013 Super 8 50cc 2T Air Cooled Mfg'd 2012
Stock pipe derestriction
Smooth Boss
6.5gm Dr Pulley sliders
Malossi Torsion Controller
Malossi Fly Clutch- yellow springs
Polini Variator
#95 Main Jet
Purple Malossi Contra Spring
42 MPH on the flats with the wind

tortoise

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Years Versus Miles
« Reply #10 on: August 14, 2014, 10:20:20 PM »
experience on the life expectancy of the CVT belts
Geely-Jalon 139QMB 50cc 4-stroke was put into service September 2005 and only used for nearby errands running 25-30 MPH.  Original belt looked to be in pretty good shape October 2009 at odometer 3072 kilometers (1909 miles) when installing NCY variator and 6 gram Dr. Pulley sliders.  Original belt failed August 2014 at odometer 6202 kilometers (3853 miles) . . around 8 years and 11 months service.  The 3 variator slides had disintegrated causing NCY guide wear.  The sliders still weighed 6 grams each.  Cleaned CVT chamber using compressed air, then brushing with a diluted Simple Green solution and rinsing off.  Applied Walmart SuperTech grease to clutch torque driver bearings and starter bendix.  Re-installed the original variator with 3 new slides, 6 gram sliders, and a new Gates Powerlink 669-18-30 belt.  Applied blue thread locker prior to torquing clutch nut to 30 foot-pounds and variator nut to 40 foot-pounds.















« Last Edit: August 17, 2014, 02:38:22 PM by tortoise »

MassScoot

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Re: CVT belt life expectancy?
« Reply #11 on: August 15, 2014, 01:43:50 PM »
I just replaced my belt after 1500 Miles but mainly to have a spare also.

Chris: 1500 miles? That's overkill. You should get @ least 7,000+ miles out of a decent belt. Kymco uses Gates (good stuff)
Gloucester, MA. (Home of the Perfect Storm)
2012 Silver Kymco GT300i (Biondi Windshield/Shad SH40 Cargo Topcase)
2015 White Honda PCX150 (Shad SH37 Topcase)
2013 Yellow Lance PCH125 (Shad SH33 Topcase)

kfc.android

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Re: CVT belt life expectancy?
« Reply #12 on: August 15, 2014, 03:02:30 PM »
I think it's a good idea to replace your belt based on what your manual suggests.
It won't cost you too much money to just replace the belt, but it might cost you a lot because a broken belt might cause damage to other parts.
On my DT300 manual it says replace every 12,000 miles so it's not too bad for a $80 belt (Mitsuboshi, a Japanese company made that belt for kymco and the quality is really good)

MoToFaLcon

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Re: CVT belt life expectancy?
« Reply #13 on: August 16, 2014, 08:42:20 PM »
When ever you change your belt, how does everyone go about torque on the nuts? Guessometer or torque wrench?  Hoping for guessometer lol, i hate torque settings.  ::)
WTF, i have a Ninja 650!!

Tierney

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Re: CVT belt life expectancy?
« Reply #14 on: August 17, 2014, 12:58:23 AM »
I just read in the Kymco service manual that the belt should be changed at 10,000 kilometers - 6,200 miles. Does this seem right?

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