Author Topic: CVT Belt change  (Read 5302 times)

ScooterWolf

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CVT Belt change
« on: August 14, 2017, 12:52:22 AM »
I'm at that point in milage that I need to change my drive belt. Is it also worth it to consider upgrading to Dr. Pulleys roller weights?

- Wolf

stuo

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Re: CVT Belt change
« Reply #1 on: August 20, 2017, 11:21:41 PM »
I've been told that you will get more top end due to the sliders rising higher in the variator but you may also get the belt hitting the housing because of the increased rise of the belt. If you are satisfied with your scoot's performance why mess with it?

I welcome different opinions from those who know more then me, which is 99% of everyone reading this. 
2009 GV 250

CROSSBOLT

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Re: CVT Belt change
« Reply #2 on: August 21, 2017, 12:13:52 AM »
I am happy like a clam with the DT300i as it is and intend leaving that way. I rather ride than wrench!

Karl
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Yager 200i
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kneeslider

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Re: CVT Belt change
« Reply #3 on: August 21, 2017, 01:49:19 AM »
Owner's manual recommends the belt to be replaced every 20,000kms.
2019 Yamaha X-Max 250

de dee

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Re: CVT Belt change
« Reply #4 on: August 21, 2017, 06:16:48 AM »
I'm at that point in milage that I need to change my drive belt. Is it also worth it to consider upgrading to Dr. Pulleys roller weights?

- Wolf
I have all sizes and Wt. of sliders in stock, when I was trying to lower the RPM ,  Takes me about 20 Min. to change sliders ,  it lowers the RPM about 500 RPM at speed , and boosts the take off speed,.  with 14 gram sliders,  I use 16 gram in my scooter not so good for take off but good for cruising at 60 MPH.   Plus I have done a little grinding on my variator ramps  to lower the RPM even more,.  are you planning a trip to Ottawa this year, happy  to see you again,.  de dee

CROSSBOLT

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Re: CVT Belt change
« Reply #5 on: August 21, 2017, 01:17:59 PM »
My first DT had 20000 MILES when I had to replace the belt because the winter mice had blocked the CVT cooling inlet with birdseed and the belt had started to disintegrate from the heat. Also there was that squeal when the clutch disengaged that was fixed with a real small dab of grease on the inner clutch needle bearing. 'Course I had you guys that calmed me down and reminded me of that bearing! All that to say this: I personally think 20000 km is way too soon. It is a real safe distance and sells more belts.

Karl
Karl

Three motorcycles 1960-1977 (restored a 1955 BSA)
Agility 50
Yager 200i
Downtown 300i
Navy tech, Ships Engineer, pilot and aircraft mechanic

de dee

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Re: CVT Belt change
« Reply #6 on: August 21, 2017, 03:40:25 PM »
My first DT had 20000 MILES when I had to replace the belt because the winter mice had blocked the CVT cooling inlet with birdseed and the belt had started to disintegrate from the heat. Also there was that squeal when the clutch disengaged that was fixed with a real small dab of grease on the inner clutch needle bearing. 'Course I had you guys that calmed me down and reminded me of that bearing! All that to say this: I personally think 20000 km is way too soon. It is a real safe distance and sells more belts.

Karl
You could keep the belt till it is down to 22 MM.,  and it slips all the time, Mitsuboshi size is 1004/25.5  30 degrees,
but I never got one bigger than 24.5 wide, with 6 belts bought,. I have 3 new in stock and bike not running

tvniklas

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Re: CVT Belt change
« Reply #7 on: August 21, 2017, 06:10:22 PM »
My first DT had 20000 MILES when I had to replace the belt because the winter mice had blocked the CVT cooling inlet with birdseed and the belt had started to disintegrate from the heat. Also there was that squeal when the clutch disengaged that was fixed with a real small dab of grease on the inner clutch needle bearing. 'Course I had you guys that calmed me down and reminded me of that bearing! All that to say this: I personally think 20000 km is way too soon. It is a real safe distance and sells more belts.

Karl

Hello Karl
Could you or anyone else explain in words or pictures where exactly to put the grease?
""Also there was that squeal when the clutch disengaged that was fixed with a real small dab of grease on the inner clutch needle bearing.""
Kymco Downtown 300i ABS -2013
ODO: 9950km
Dr Pulley 15g / Orginal rollers  (change all the time)
Gas average 0,29L/10km
From: Sweden
--------------------------------
Kymco Like 125  -2016  -Sold
Kymco Agility 50 -2015 -Sold
I have 14g ,15g and 15,5 Pulley´s to sell

CROSSBOLT

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Re: CVT Belt change
« Reply #8 on: August 21, 2017, 09:25:21 PM »
Tv, the clutch has two bearings: radial sealed ball bearing on the outside, away from the gearbox and a needle roller bearing on the inside, next to the gear box. The outer, being sealed, should retain its grease until the seals fail. The inner has a separate seal that should hold the grease from getting into the cvt case and clutch but will have no control preventing grease from migrating inside between bearings.

Karl
Karl

Three motorcycles 1960-1977 (restored a 1955 BSA)
Agility 50
Yager 200i
Downtown 300i
Navy tech, Ships Engineer, pilot and aircraft mechanic

kneeslider

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Re: CVT Belt change
« Reply #9 on: August 22, 2017, 05:09:09 AM »
de dee, what were the original weight for the original rollers?

Dr.Pulley recommends going up or down on those weights?

I have all sizes and Wt. of sliders in stock, when I was trying to lower the RPM ,  Takes me about 20 Min. to change sliders ,  it lowers the RPM about 500 RPM at speed , and boosts the take off speed,.  with 14 gram sliders,  I use 16 gram in my scooter not so good for take off but good for cruising at 60 MPH.   Plus I have done a little grinding on my variator ramps  to lower the RPM even more,.  are you planning a trip to Ottawa this year, happy  to see you again,.  de dee
2019 Yamaha X-Max 250

tvniklas

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Re: CVT Belt change
« Reply #10 on: August 22, 2017, 06:16:29 AM »
Tv, the clutch has two bearings: radial sealed ball bearing on the outside, away from the gearbox and a needle roller bearing on the inside, next to the gear box. The outer, being sealed, should retain its grease until the seals fail. The inner has a separate seal that should hold the grease from getting into the cvt case and clutch but will have no control preventing grease from migrating inside between bearings.

Karl
Great! Thanks Karl 👌
Kymco Downtown 300i ABS -2013
ODO: 9950km
Dr Pulley 15g / Orginal rollers  (change all the time)
Gas average 0,29L/10km
From: Sweden
--------------------------------
Kymco Like 125  -2016  -Sold
Kymco Agility 50 -2015 -Sold
I have 14g ,15g and 15,5 Pulley´s to sell

tvniklas

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Re: CVT Belt change
« Reply #11 on: August 22, 2017, 11:25:37 AM »
I have just got my new belt, airfilter and oilfilter from Taiwan Big Scooter Shop!
Everything looks genuine but the belt only messures 19mm , just as wide as my present that have 9000km.
Wrong size?

Edit: messured again with a tailors band and, 24mm wide and 1009mm long
« Last Edit: August 22, 2017, 11:44:14 AM by tvniklas »
Kymco Downtown 300i ABS -2013
ODO: 9950km
Dr Pulley 15g / Orginal rollers  (change all the time)
Gas average 0,29L/10km
From: Sweden
--------------------------------
Kymco Like 125  -2016  -Sold
Kymco Agility 50 -2015 -Sold
I have 14g ,15g and 15,5 Pulley´s to sell

CROSSBOLT

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Re: CVT Belt change
« Reply #12 on: August 22, 2017, 11:45:47 AM »
Nope. Too narrow.

Karl
Karl

Three motorcycles 1960-1977 (restored a 1955 BSA)
Agility 50
Yager 200i
Downtown 300i
Navy tech, Ships Engineer, pilot and aircraft mechanic

tvniklas

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Re: CVT Belt change
« Reply #13 on: August 22, 2017, 02:02:04 PM »
Nope. Too narrow.

Karl

Even after my edit?   ""Edit: messured again with a tailors band and, 24mm wide and 1009mm long""
Kymco Downtown 300i ABS -2013
ODO: 9950km
Dr Pulley 15g / Orginal rollers  (change all the time)
Gas average 0,29L/10km
From: Sweden
--------------------------------
Kymco Like 125  -2016  -Sold
Kymco Agility 50 -2015 -Sold
I have 14g ,15g and 15,5 Pulley´s to sell

tvniklas

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Re: CVT Belt change
« Reply #14 on: August 22, 2017, 02:53:38 PM »
Sorry for my stupidity Karl, but!
Do i need to remove the nut to grease the clutch or just add some where the picture is taken?
Kymco Downtown 300i ABS -2013
ODO: 9950km
Dr Pulley 15g / Orginal rollers  (change all the time)
Gas average 0,29L/10km
From: Sweden
--------------------------------
Kymco Like 125  -2016  -Sold
Kymco Agility 50 -2015 -Sold
I have 14g ,15g and 15,5 Pulley´s to sell

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