KymcoForum.com
Scooters - 125 to 300 => Downtown 300 => Topic started by: ScooterWolf on August 14, 2017, 12:52:22 AM
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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
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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.
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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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Owner's manual recommends the belt to be replaced every 20,000kms.
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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
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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
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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
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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.""
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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
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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
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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 👌
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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
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Nope. Too narrow.
Karl
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Nope. Too narrow.
Karl
Even after my edit? ""Edit: messured again with a tailors band and, 24mm wide and 1009mm long""
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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?
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Or do you mean the red one?
Sorry for all questions 😂
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de dee, what were the original weight for the original rollers?
Dr.Pulley recommends going up or down on those weights?
the original Wt. is 15 1/2 grams rollers, use 14 gram if you like fast take off,. 15 or 16 if you like lower RPM at 100 Kmh
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You cannot lube the red one, the red one is next to the nut that holds the clutch assy on. You are NOT dumb! Questions are for when you do not know something. Old guys like most of us here are for giving you all the wrong answers! Har, har! Back to reality, your other excellent picture of the roller bearing (last picture page one) is the one you want to lube. A small dab on the tip of a finger that will fit inside the bearing. A little bigger than a Hershey's mini choclate candy kiss. Go buy four pounds of those, take one for a pattern, send the rest here! That does it!
Karl
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24 mm wide is OK but too long. De dee says he gets 24.5 mm wide 1004 mm long and that's what I got for a DT replacement.
Karl
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the original Wt. is 15 1/2 grams rollers, use 14 gram if you like fast take off,. 15 or 16 if you like lower RPM at 100 Kmh
So if I get the same weight for Dr.Pulley. I should get both benefits.
Sent from my HUAWEI VNS-L31 using Tapatalk
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So if I get the same weight for Dr.Pulley. I should get both benefits.
Sent from my HUAWEI VNS-L31 using Tapatalk
yes 14 1/2 gram should give you both benefits, it is a very light benefit so don't expect turbo benefits,
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You cannot lube the red one, the red one is next to the nut that holds the clutch assy on. You are NOT dumb! Questions are for when you do not know something. Old guys like most of us here are for giving you all the wrong answers! Har, har! Back to reality, your other excellent picture of the roller bearing (last picture page one) is the one you want to lube. A small dab on the tip of a finger that will fit inside the bearing. A little bigger than a Hershey's mini choclate candy kiss. Go buy four pounds of those, take one for a pattern, send the rest here! That does it!
Karl
So nice when you help us unexperienced here, so you do not have to leave the scooter to the workshop every time ! Then it feels safer if anything happens on the way.
Thank you Karl for making it crystal clear 👌
Im also a bit confused about the grease between the the two roller bearings, should it be grease there?(as seen on the last picture, page one)The surface that have contacts with the spline (driveshaft?) On the opposite side (variator) there is none grease on the splines.
Take care // Niklas
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My personal preference on splines is a Permatex product called antiseize. It is a high temperature silver-like grease that prevents things corroding/rusting being "locked" together. Must be used sparingly: a little dab will do ya!
Karl
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My personal preference on splines is a Permatex product called antiseize. It is a high temperature silver-like grease that prevents things corroding/rusting being "locked" together. Must be used sparingly: a little dab will do ya!
Karl
Thanks once again Karl 🤗
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:)
Karl
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Nice to read that! :)
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