New subscriber. You're doing some very fine, important and detailed work - thank you for taking the time and sharing your results! I found you because I'm in the market for a new ADV150 and was curious about possible mods.
Hello! I have good news. The Dr. Pulley weights do improve take off speed! It is sinply a matter of finding the best weights for your bike. I installed 15 gram weights in my Yamaha Majesty yp400. Certainly it was worth it! I also purchased them for less than the OEM Yamaha price.
@@YahuchananLewis-wz5eo Thank you, yes I ended up ordering from Pollini who have a multitude of various gram-weights allowing me to dial in what I have found my new favorite combination of weights totaling around 76 grams and using Malossi Yellow springs on both the contra and clutch pads giving me very impressive acceleration and top speed of 69mph on my 2024 Vespa Spring 150s!
Good video, interesting and informative. Good to know the Dr Pulleys last a lot longer, especially (I’m guessing) for those of us with Chinese scooters and thus cheaper parts including rollers.
Without modification, DRP won't increase your top speed. Just a simple 0.5mm milling to the movable front pulley base will make a big difference. You should have noticed that with DRP, the limit to the highest ratio is not limited by the pulley slider groove anymore, but rather by the pulley face. You can check this by looking at the metal around the O-ring face, they will leave some mark with DRP. Simply mill the face by 0,5mm and press the O-ring deeper (or make it seats deeper if it's not possible) you will increase the pulley travel by 2mm. I always do this to all my Honda scooter (those 110cc, 125cc, 150cc variants). I always get DRP with slightly lighter weight, and with this mod I get faster acceleration, slightly more top speed, and as mentioned in the video waaaaaaay longer slider/roller life. My Honda Vario 150 originally used 15.5gr for each roller, I changed to 14gr DRP. I replaced my last one (Vario 150cc) after 62.000km with no significant wears (approximately 0.2gr for each, less than the new one). The only downside with lighter slider is you lose some fuel mileage (but more fun times) 48km/liter instead of the original 51-52km/liter.
The good thing about Dr.Pulley sliders is you can get the same top end ratio with lighter weights thus improving the acceleration of the scoot. I've had Dr.Pulleys on all my scooters and can promise there is better acceleration & top end with them even when going with lighter mass. Video posters demonstration of ratios is still valid. I bet if they dropped the mass a couple of grams on the sliders they would see better acceleration but with the same top end of heavier rollers. Nice video nonetheless.
Yes dr. Pulley is good but mine flipping in the worng position. Sometimes 1 or 2 piece so i need to open the variator to fix it very often. Do you experience it to?how to fix it?
@@ianlanford6922 i use oem variator. That is why im wondering why. I notice it when i am crusing and when i suddenly stop , i can feel that it flip over because the rpm is different when accelerating. Maybe i need to change stiffer spring than stock?
Thank you! Is there an issue with long term durability (by going to different weights or shapes) of the directly impacted or related components that you are aware of?
Great detailed video! 👍 Do you mind telling me, what is the correct way to insert the roller, because there are 2 sides, the full sided teflon and not. Which side of the full sided teflon in the roller housing?
Teflon always facing left as you put them in. Confusingly my new RCA 10g rollers arrived today with both sides identical so I guess they dont have a right or wrong side
I have a Vespa Gts 300 Malossi cylinder and head. I use dr.pulleys for the last 45.000 km. They are night and day in comparison with the standard rollers. Better acceleration higher top speed and I kept last pulleys 40.000 km and I changed them although my mechanic suggested there was still life in them and I should have kept them at least 10.000 km more. Normal rollers 6.000 km max and they were shot. I even tried the j.Costa evo3 and it failed on 1000km. So dr.pulleys are worth it 10000%
@@danieldiva3184 I rode aggressive before and after and I can’t tell any fuel consumption difference. I never counted to be honest but if it was big I would have noticed.
So no difference? I also have a 125cc Vino and wanted a little more on both bottom and top end which is what Dr Pulley says it does. My scooter is standard apart from the emissions delete which I followed on your other post (nice one) Any advise Mitch?
Saya pasang loler dr.pulley di dua motor malah ngerusak rumah loler nya, di karna kan bantalan dalem nya koclak gak diem jadi ngegerus dingding rumah lolernya. Gimana solusinya nich? Apakah ada yang sama juga?
been using dr. pulley flyball on my nmax 155cc all i can say its different based on my experienced on our rides with my family..before topspeed is 117 km/hr only on stock flyball i am 95kgs. ..our last rides i got 124 km/hr on dr. pulley with a back ride w/c is my wife weighing 54 kgs. all stock.. acceleration and top speed is dope tho.
Roller weights don’t “roll” anyway . Centrifugal force dosent allow them to actually roll all the way over. They slide . Might as well have flat sliders that are designed to do this . Just my thought . Cheers
Same thinking. The rollers doesnt really roll. Overtime time the rollers will have a flat spot which is kind of annoying cause it alters the ratio a little.
If no improvement using this roller, then why after install my new nmax opens the vva earlier? Usually with stock roller 13grams it opens ariund 74 / 75 kmh... This when riding smoothly. But after i install the dr pulley rollers also 13grams( weight check ech) my nmax open vva at 64kmh... It means it reach rpm 6000 earlier. Everything else is stock, only the rollers. I'm more towards economy riding for better fuel consumptions & mileage, so after install the dr pulley rollers it feels less economy in fuel consumption.. riding style still the sam, lets see this few days to see how it performance Maybe still new & fit in the pulley housing. If it still no changes, might use original rollers back which has better fuel consumption.
I used 15g Dr. Pulleys and the take off I have now is absolutely scary! 🙈 She almost pulls a wheelie, and for those of you familiar with the Yamaha Majesty yp400 CVT transmission; you know that is an impposible feat. Your caliper and micrometer must be broken! 😉
Please excuse any ttpos. Esitung them is now more of a chore than clipping my toe nails. RUclips has removed tgat option and the spell checker is an absolute idiot! 💯 😜
Usually we use different weight to make up for weights that are hard to get during tuning.. lets say we wanted 13g, but theres only 12g and 14g. So we mixed them to get 13g.. i wouldnt recommend using mixed weight for a long time as the heavier rollers will work harder and wear out faster.. all equal weight are still the best..
I can tell you that I have put Dr pulley sliders in a Honda Helix, Burgman 400 and Yamaha Majesty and in each bike they made a big difference in exceleration and lower cruising rpms, it could be that either something went wrong during your setup or you did not find the proper slider weight for your application, once you do youll notice a difference
Newbie to scooters. Bought a Honda Helix. Last year takeoff was not bad, this year, it jump and rattles on slow take off. Much smoother when I romp on the throttle. Is this a roller issue?
A lot of very easy takeoffs or putting around too slow too much ( like under 10 or 11 mph ) makes the clutch slip a lot before grabbing and lock. That glazes the clutch drum make clutch chatter.
@@michaelc9721 Dr pulley claimed that their slider design would allow the lowest ratio to go much lower and the highest ratio to go even higher.. but in this video you can see that it doesnt alter the ratio at all... during testing on the bike, i compared 12g rollers to 12g dr pulley sliders.. no difference were recorded on my data logger.. so spending on the crazy expensive dr pulley slider will not give you additional performance gain compared to the cheaper rollers of the same weight...
Aftermarket front pulley, 12g dr pulley rollers, lighten clutch bell for a start. If you dont mind high revving noisy engine, you can change contra spring and even lighter rollers which i dont recommend.. you lose low speed comfort.. you may consider changing one gear in your gearbox, provided you have aftermarket exhaust and tuned fuel map..
Excellent test and very thorough. So, since there isn't any significant difference when putting Dr. Pulley, just changing the weight of the stock rollers should do just fine,since they are cheaper to replace than Dr. Pulley.
@@mlxnrzhr Thanks for your quick answers. One more question. I have a Kymco X-Town 300 and after 100 kph and going with 6000 rpm at that moment, I get vibrations when going faster after that speed. What can I do to drop the RPM at high speeds, so that I don't have that many vibrations ?
They SHOULD make a difference by design. I made my own dr pulley rollers because fuck them 50 euros i bought some Malossi rollers and modified them. I got rougly a 1.5mm lower gear ratio and technically a higher ratio (of course the engine must have enough power, the belt must be long enough to allow a higher ration and the rear pulley must allow a higher ratio too) . I did this on a gilera runner 180 2 stroke on his original variator. The original variator is kinda gimped so the benefits could be better that on a a Good Variator. Still in acceleration it beats a Pinasco by far and a Polini.
On top of that the original variator of the old version were designed to run with the rollers greased. That means that after 12000kms with molybdenum/graphite grease the rollers are still new.
They do make a positive difference. I've used em on 2 different big scooters and they work as advertised. No abnormal wear issues yet so this vid seems like a theoretical exercise rather than actual testing observations.
Having fitted Dr Pulley sliders to a previous Burgman 400 I owned I did find that the engine revs were lower for the equivalent speeds of original rollers. Hope that helps.
@@motorcyclewild5873 mine was a 2002 model and I went with standard weight sliders but after putting a couple of thousand miles on I reckon a couple of grams lighter would have worked well.
They are all sliders. The "rollers" don't actually roll in operation. That's why they develop flat spots. The advantage of the "sliders" is that they are designed to do what they actually do, and will last longer because they won't get flat spots. But the "rollers" and "sliders" don't operate in a different way.
@@LuckyImposter depends on your setup and tuning.. each people are getting different gas mileage and top speed with certain tuning certain roller weight certain human weight and certain setup... im getting 38 with 127 with a certain setup...
i remove my rs8 pulley and agm wing bell then back to stock parts. i change flyball to 19/16 dr. pulley. much better. than before :). looking forward to your next video with your recommended setup for upgrade. thanks
Your measurements are wrong because the back of the variator plate only expands when the rollers are putting pressure on the back plate, That only happens when the variator is spinning .
When the whole variator is spinning, centrifugal force is applied to the rollers/sliders thus causing the them to slide out on the ramp and causing the variator to move.. the strings are there pulled to simulate the centrifugal force at its maximum not taking contra spring stiffness into consideration. So i guess your comment are totally wrong.
Dr Pulley any day any time if you treat m well they will last and last and last i use synthetic grease lightly and five years in my Piaggio mp3 400 still verry little wear . lower rpm lower fuell consumption well depends on your throttle hand offcourse lol bot normal round rollers just suck after a few months they already have a flat surface no matter what brand the design is crap .My 2 cents
cara ukur yang kedua salah , itu pulley sudah rapet mentok sebelum dr pulley sempat full mengembang (mendongkrak lebih tepatnya cara dr pulley mengembang penuh)
You still using stock pully so that's why the Dr.Pully ball not effective well as it can. You can try with full Dr.Pully combo (pully,ball,pipe) and compare it again
@@mlxnrzhr so if Dr Pulley combo is not effective as advertise , what's the strong point of it ? And we just change lighter ball for increase accereblation?
I didn't see you actually Test if they changed top speed and acceleration or not and show it - you only made a claim we have no way to verify - Bad Video.
If theres no changes in weight or ratio, i dont see how it can magically change the acceleration and top speed.. you can give it a try... a ladder can bring you up 5 meter high.. another ladder of a different brand with the same exact dimension wont magically bring you higher..
@@mlxnrzhr That may be the case but I still think you should have demonstrated it. I saw a guy change his stock rollers with the same weight Dr Pully Sliders and he found his rpm's were lesser at the same speeds. He could hit say 20 from a stop at a lower rpm than he could before and so on. By the time he was up to his max speed he had shaved 1100 rpms off compared to his stock rollers. Some perceive this as a change in speed. If you are shifting faster (at lower rpm's) to hit a certain speed, that's time saved thus some amount of acceleration. Now does a lower weight actually give you faster acceleration off the line or a higher weight actually give you more top end.. perhaps not but there still is a difference perceived at least in that guys test. At least if you are not revving so high to get to your top speed, that saves engine ware and tear and if properly tuned I'd think you could possibly squeeze a little more top out of the bike due to having those rpms left to play with.
@@DivergentDroid stock with same weight dr pulley?. I really cant see how it can make a difference.. if rpm is lower, you are off the peak power. You are losing acceleration.. you are shifting at low rpm. So the video you watched testing is probably another bad video.. Ive never seen people shifts at low rpm around the track.. they would normally rev to red line to so that the engine is around peak power... thats acceleration.. theory on low weight gives you acceleration and heavy weight gives you top end is wrong.. the key theory to any internal combustion engine is to shift and stay at peak power for acceleration and top end.. i will take your advice on showing the test video.. its a little difficult in my little tiny country to do this kinda testing on video.. most of them would blur out the speedometer once they go above speed limit..
I don't know what all this "they don't work" garbage is cause I've installed them on a 400 Bergman and a 300 Forza and they have worked nicely. Better acceleration, better top speed (or lower rpm at cruising speed) and a wider rpm range between throttle on and throttle off. Meaning I can keep the revs lower when I limit throttle for relaxed riding AND get higher revs at WOT. It sounds like your theorizing rather than having actually tested these... Bad video imo.
Your comment on limit throttle revs lower and highers revs at WOT is a very good indicator of placebo effect.. they are not advertised that way and they are not supposed to work that way.. centrifugal force equals mass of the rollers by angular velocity square multiply by distance.. the higher the rpm, the higher the distance, the more the pulley wants to close. Changing the mass will only lower OR increase the whole result, it will never be both.. So i guess you probably have changed other stuff as well to have got that same effect or your observation is purely a placebo effect..
The speed of changing the ratio is the gain of using these. Not the ratio at idle or WOT. This measurement video is of little use to the effect provided by the dynamics of the weights change.
This video is more of dr pulley design claiming to increase the lowest and highest ratio.. comparing 30 dollars dr pulley 16g to a 6 dollars normal rollers 16g. They both work exactly the same at the same weight. Alot of people felt the difference after using dr pulley because they went from original weight rollers to a far lighter rollers.. eg. 20g to 16g. Instantly they felt dr pulley sliders are good. Try changing 20g dr pulley to 16g normal rollers.. then you will say dr pulley is a waste of money..
Nice and honest review , keep it up
New subscriber. You're doing some very fine, important and detailed work - thank you for taking the time and sharing your results! I found you because I'm in the market for a new ADV150 and was curious about possible mods.
Hello!
I have good news.
The Dr. Pulley weights do improve take off speed! It is sinply a matter of finding the best weights for your bike.
I installed 15 gram weights in my Yamaha Majesty yp400. Certainly it was worth it! I also purchased them for less than the OEM Yamaha price.
@@YahuchananLewis-wz5eo Thank you, yes I ended up ordering from Pollini who have a multitude of various gram-weights allowing me to dial in what I have found my new favorite combination of weights totaling around 76 grams and using Malossi Yellow springs on both the contra and clutch pads giving me very impressive acceleration and top speed of 69mph on my 2024 Vespa Spring 150s!
Good video, interesting and informative. Good to know the Dr Pulleys last a lot longer, especially (I’m guessing) for those of us with Chinese scooters and thus cheaper parts including rollers.
Great job.. new subscriber. Simply and Clear.
My back wheel spins at idle on the center stand now with the dr pulley system installed. Is that hurting my clutch at stops?
Without modification, DRP won't increase your top speed. Just a simple 0.5mm milling to the movable front pulley base will make a big difference. You should have noticed that with DRP, the limit to the highest ratio is not limited by the pulley slider groove anymore, but rather by the pulley face. You can check this by looking at the metal around the O-ring face, they will leave some mark with DRP. Simply mill the face by 0,5mm and press the O-ring deeper (or make it seats deeper if it's not possible) you will increase the pulley travel by 2mm. I always do this to all my Honda scooter (those 110cc, 125cc, 150cc variants). I always get DRP with slightly lighter weight, and with this mod I get faster acceleration, slightly more top speed, and as mentioned in the video waaaaaaay longer slider/roller life. My Honda Vario 150 originally used 15.5gr for each roller, I changed to 14gr DRP. I replaced my last one (Vario 150cc) after 62.000km with no significant wears (approximately 0.2gr for each, less than the new one). The only downside with lighter slider is you lose some fuel mileage (but more fun times) 48km/liter instead of the original 51-52km/liter.
The good thing about Dr.Pulley sliders is you can get the same top end ratio with lighter weights thus improving the acceleration of the scoot. I've had Dr.Pulleys on all my scooters and can promise there is better acceleration & top end with them even when going with lighter mass. Video posters demonstration of ratios is still valid. I bet if they dropped the mass a couple of grams on the sliders they would see better acceleration but with the same top end of heavier rollers. Nice video nonetheless.
Yes dr. Pulley is good but mine flipping in the worng position. Sometimes 1 or 2 piece so i need to open the variator to fix it very often. Do you experience it to?how to fix it?
@@ArthVader09 do you use modified ramp? i think standard oem/factory one will not cause this
@@ianlanford6922 i use oem variator. That is why im wondering why. I notice it when i am crusing and when i suddenly stop , i can feel that it flip over because the rpm is different when accelerating. Maybe i need to change stiffer spring than stock?
That's what I'm hearing too.. when in doubt go lighter and you probably will get a bit better acceleration.
Thank you! Is there an issue with long term durability (by going to different weights or shapes) of the directly impacted or related components that you are aware of?
Nope...
My aprilla sr150 not going speed from 40kmph what's problem
Thank you mate
If i wanted better torque from 0 to 100 kph on a 021 honda PCX160 - what would you recommend ? Thanks
Aftermarket front pulley and weights..
Great detailed video! 👍
Do you mind telling me, what is the correct way to insert the roller, because there are 2 sides, the full sided teflon and not. Which side of the full sided teflon in the roller housing?
Teflon always facing left as you put them in. Confusingly my new RCA 10g rollers arrived today with both sides identical so I guess they dont have a right or wrong side
I have a Vespa Gts 300 Malossi cylinder and head. I use dr.pulleys for the last 45.000 km. They are night and day in comparison with the standard rollers. Better acceleration higher top speed and I kept last pulleys 40.000 km and I changed them although my mechanic suggested there was still life in them and I should have kept them at least 10.000 km more.
Normal rollers 6.000 km max and they were shot.
I even tried the j.Costa evo3 and it failed on 1000km.
So dr.pulleys are worth it 10000%
that is what I need to hear.
What is your stock weight and dr pulley weight ?
@@audiophilipp I don’t remember exact weight of stock my mechanic measured and ordered pulleys 1gram lighter.
Hi sir how's the fuel consumption after dr pulley? I'm planning to replace my flyballs in my nmax v2
@@danieldiva3184 I rode aggressive before and after and I can’t tell any fuel consumption difference. I never counted to be honest but if it was big I would have noticed.
So no difference? I also have a 125cc Vino and wanted a little more on both bottom and top end which is what Dr Pulley says it does. My scooter is standard apart from the emissions delete which I followed on your other post (nice one)
Any advise Mitch?
Saya pasang loler dr.pulley di dua motor malah ngerusak rumah loler nya, di karna kan bantalan dalem nya koclak gak diem jadi ngegerus dingding rumah lolernya.
Gimana solusinya nich?
Apakah ada yang sama juga?
Where can i get them?
true!
been using dr. pulley flyball on my nmax 155cc all i can say its different based on my experienced on our rides with my family..before topspeed is 117 km/hr only on stock flyball i am 95kgs. ..our last rides i got 124 km/hr on dr. pulley with a back ride w/c is my wife weighing 54 kgs. all stock.. acceleration and top speed is dope tho.
Ilang grams gamit mu sir? Ty
@@silentertdoomed8236 14x3 11x3
Waow lakas ng nmax mo sir ah. Naka bore up?
@@charlespatrickumoso2993 all stock po boss nka dr. pulley lng .
What is the weight ratio betwen original roller weight and flyball ?
Que rodillos le irían bien honda sh 125 gramos
Im annoyed with my dr.pulley. 2 pieces always flipping so i always open the variator to fix the position. Can someone help me how to fix it?
thats not normal something is wrong......
Hola nessesito reparar la suspencion delantera
I drive a Honda Forza 350, how many grams would you put dr pulley or tech pulley so it doesn't lose top speed?
Roller weights don’t “roll” anyway . Centrifugal force dosent allow them to actually roll all the way over. They slide . Might as well have flat sliders that are designed to do this . Just my thought . Cheers
Same thinking. The rollers doesnt really roll. Overtime time the rollers will have a flat spot which is kind of annoying cause it alters the ratio a little.
If no improvement using this roller, then why after install my new nmax opens the vva earlier? Usually with stock roller 13grams it opens ariund 74 / 75 kmh... This when riding smoothly. But after i install the dr pulley rollers also 13grams( weight check ech) my nmax open vva at 64kmh... It means it reach rpm 6000 earlier. Everything else is stock, only the rollers. I'm more towards economy riding for better fuel consumptions & mileage, so after install the dr pulley rollers it feels less economy in fuel consumption.. riding style still the sam, lets see this few days to see how it performance Maybe still new & fit in the pulley housing. If it still no changes, might use original rollers back which has better fuel consumption.
because the design of sliders exhibits more friction. Sliders dont move as freely as rollers.
try 12 gram dr pulley !
@@aaronisaac6490 BS
Dzięki.
I used 15g Dr. Pulleys and the take off I have now is absolutely scary! 🙈
She almost pulls a wheelie, and for those of you familiar with the Yamaha Majesty yp400 CVT transmission; you know that is an impposible feat.
Your caliper and micrometer must be broken! 😉
Please excuse any ttpos. Esitung them is now more of a chore than clipping my toe nails. RUclips has removed tgat option and the spell checker is an absolute idiot! 💯 😜
hello malex. what is a better set up? all six weghts the same? or combination of light and heavy weights?
Usually we use different weight to make up for weights that are hard to get during tuning.. lets say we wanted 13g, but theres only 12g and 14g. So we mixed them to get 13g.. i wouldnt recommend using mixed weight for a long time as the heavier rollers will work harder and wear out faster.. all equal weight are still the best..
@@mlxnrzhr thank you for enlightening me about roller weights. you are cvt genius!
@@mlxnrzhr i want to buy in bulk orders.
@@williamlyngdohmawlong2167 i dont have a shop or sell parts..
I can tell you that I have put Dr pulley sliders in a Honda Helix, Burgman 400 and Yamaha Majesty and in each bike they made a big difference in exceleration and lower cruising rpms, it could be that either something went wrong during your setup or you did not find the proper slider weight for your application, once you do youll notice a difference
Hi what gram do you recommend? I’m currently using 12g straight. Great video
Depends on youre engine but if u under 200pounds go 10grm or with sliders 9
@life of 2332 that's incorrect, if your over 200lbs use 10gram if your und 200lbs use 11grams.
Nice video, I guess it depends from the variator, at some may work
Newbie to scooters. Bought a Honda Helix. Last year takeoff was not bad, this year, it jump and rattles on slow take off. Much smoother when I romp on the throttle. Is this a roller issue?
A lot of very easy takeoffs or putting around too slow too much ( like under 10 or 11 mph ) makes the clutch slip a lot before grabbing and lock. That glazes the clutch drum make clutch chatter.
Take your cvt cover off and check your belt and rollers. If those look good, might be a carb issue?
check your rear shocks
What.is.good.for some low end
what grams of dr. pulley? you recommend?
12g or 13g
@@mlxnrzhr aren't the existing weights at 20g? If so, I would suspect some difference in going so low as 12g or 13g, no?
@@michaelc9721 Dr pulley claimed that their slider design would allow the lowest ratio to go much lower and the highest ratio to go even higher.. but in this video you can see that it doesnt alter the ratio at all... during testing on the bike, i compared 12g rollers to 12g dr pulley sliders.. no difference were recorded on my data logger.. so spending on the crazy expensive dr pulley slider will not give you additional performance gain compared to the cheaper rollers of the same weight...
what changes did you do in your cvt currently?
Aftermarket front pulley, 12g dr pulley rollers, lighten clutch bell for a start. If you dont mind high revving noisy engine, you can change contra spring and even lighter rollers which i dont recommend.. you lose low speed comfort.. you may consider changing one gear in your gearbox, provided you have aftermarket exhaust and tuned fuel map..
@@mlxnrzhr are u using stock spring or 1500rpm torque spring? I am also using Kenzo Matic variator.
@@edge8011 im using stock spring..
Excellent test and very thorough. So, since there isn't any significant difference when putting Dr. Pulley, just changing the weight of the stock rollers should do just fine,since they are cheaper to replace than Dr. Pulley.
Stock are cheaper, but dr pulley last 3 to 4 times longer.. so price wise, cant really comment..
@@mlxnrzhr Yes,it seems better investment to put Dr Pulley. No difference on high and low speeds and RPM compared to stock ?
No difference..
@@mlxnrzhr Thanks for your quick answers. One more question. I have a Kymco X-Town 300 and after 100 kph and going with 6000 rpm at that moment, I get vibrations when going faster after that speed. What can I do to drop the RPM at high speeds, so that I don't have that many vibrations ?
Have to see if the vibration is related to rpm (engine vibration) or speed ( frame, mounting, wheel vibration)
Can u resurface them when worn?
They SHOULD make a difference by design. I made my own dr pulley rollers because fuck them 50 euros i bought some Malossi rollers and modified them. I got rougly a 1.5mm lower gear ratio and technically a higher ratio (of course the engine must have enough power, the belt must be long enough to allow a higher ration and the rear pulley must allow a higher ratio too) . I did this on a gilera runner 180 2 stroke on his original variator. The original variator is kinda gimped so the benefits could be better that on a a Good Variator. Still in acceleration it beats a Pinasco by far and a Polini.
On top of that the original variator of the old version were designed to run with the rollers greased. That means that after 12000kms with molybdenum/graphite grease the rollers are still new.
They do make a positive difference. I've used em on 2 different big scooters and they work as advertised. No abnormal wear issues yet so this vid seems like a theoretical exercise rather than actual testing observations.
Having fitted Dr Pulley sliders to a previous Burgman 400 I owned I did find that the engine revs were lower for the equivalent speeds of original rollers. Hope that helps.
@@DaveDev1nehi what year burgman did you have and what gram sliders did you have in it
@@motorcyclewild5873 mine was a 2002 model and I went with standard weight sliders but after putting a couple of thousand miles on I reckon a couple of grams lighter would have worked well.
haven't you tried it in high or low rpm? because this product claims to reach topspeed faster?
I tried many things already for a month..
They are all sliders. The "rollers" don't actually roll in operation. That's why they develop flat spots. The advantage of the "sliders" is that they are designed to do what they actually do, and will last longer because they won't get flat spots. But the "rollers" and "sliders" don't operate in a different way.
hi are you currently using 12g straight dr. pulley slider?
Yesh
@@mlxnrzhr how's the gas consumption. and your top speed
@@LuckyImposter depends on your setup and tuning.. each people are getting different gas mileage and top speed with certain tuning certain roller weight certain human weight and certain setup... im getting 38 with 127 with a certain setup...
i remove my rs8 pulley and agm wing bell then back to stock parts. i change flyball to 19/16 dr. pulley. much better. than before :). looking forward to your next video with your recommended setup for upgrade. thanks
But it is not affordable to us in India it is 200% more costlier than OEM roller weights.
Bro u ada Pakai ring pulley Di dlm tak?
Tidak
Your measurements are wrong because the back of the variator plate only expands when the rollers are putting pressure on the back plate,
That only happens when the variator is spinning .
When the whole variator is spinning, centrifugal force is applied to the rollers/sliders thus causing the them to slide out on the ramp and causing the variator to move.. the strings are there pulled to simulate the centrifugal force at its maximum not taking contra spring stiffness into consideration. So i guess your comment are totally wrong.
Dr Pulley any day any time if you treat m well they will last and last and last i use synthetic grease lightly and five years in my Piaggio mp3 400 still verry little wear . lower rpm lower fuell consumption well depends on your throttle hand offcourse lol bot normal round rollers just suck after a few months they already have a flat surface no matter what brand the design is crap .My 2 cents
Rumah roller sudah dikeruk apa bisa pakai roller dr pully 13gr?nice video bro
Bisa
Great 👍 thanks
cara ukur yang kedua salah , itu pulley sudah rapet mentok sebelum dr pulley sempat full mengembang (mendongkrak lebih tepatnya cara dr pulley mengembang penuh)
Jadi slider roller elok ke round roller elok??
Brrti dr pulley lbh bagua dibanding roller biasa ya gan ?
You still using stock pully so that's why the Dr.Pully ball not effective well as it can. You can try with full Dr.Pully combo (pully,ball,pipe) and compare it again
I tested with a few aftermarket as well.. same result..
@@mlxnrzhr so if Dr Pulley combo is not effective as advertise , what's the strong point of it ? And we just change lighter ball for increase accereblation?
The strong point is wear resistant.. they last super long.. longer than stock. Most aftermarket rollers dont last longer than stock..
You are supposed to measure the ratio when the roller completely roll outside.
Its mechanically limited by how much the pulley can close..
@@mlxnrzhr you realize that you only measure the low gear ratio right? Dr pulley's claim is for high gear.
Dr pulley claims for low gear and high gear.. at 2.07minute mark.. its the max the pulley can go..
@@mlxnrzhr ok, forgive me to have miss that.
No worries
Dr pulley rollers made weaker my ntorq on uphill, thats why i dont recomend.
Will say one thing they (Dr Pulleys) last longer
I didn't see you actually Test if they changed top speed and acceleration or not and show it - you only made a claim we have no way to verify - Bad Video.
If theres no changes in weight or ratio, i dont see how it can magically change the acceleration and top speed.. you can give it a try... a ladder can bring you up 5 meter high.. another ladder of a different brand with the same exact dimension wont magically bring you higher..
@@mlxnrzhr That may be the case but I still think you should have demonstrated it. I saw a guy change his stock rollers with the same weight Dr Pully Sliders and he found his rpm's were lesser at the same speeds. He could hit say 20 from a stop at a lower rpm than he could before and so on. By the time he was up to his max speed he had shaved 1100 rpms off compared to his stock rollers. Some perceive this as a change in speed. If you are shifting faster (at lower rpm's) to hit a certain speed, that's time saved thus some amount of acceleration. Now does a lower weight actually give you faster acceleration off the line or a higher weight actually give you more top end.. perhaps not but there still is a difference perceived at least in that guys test. At least if you are not revving so high to get to your top speed, that saves engine ware and tear and if properly tuned I'd think you could possibly squeeze a little more top out of the bike due to having those rpms left to play with.
@@DivergentDroid stock with same weight dr pulley?. I really cant see how it can make a difference.. if rpm is lower, you are off the peak power. You are losing acceleration.. you are shifting at low rpm. So the video you watched testing is probably another bad video.. Ive never seen people shifts at low rpm around the track.. they would normally rev to red line to so that the engine is around peak power... thats acceleration.. theory on low weight gives you acceleration and heavy weight gives you top end is wrong.. the key theory to any internal combustion engine is to shift and stay at peak power for acceleration and top end.. i will take your advice on showing the test video.. its a little difficult in my little tiny country to do this kinda testing on video.. most of them would blur out the speedometer once they go above speed limit..
duh you clearly dont know how test are done and how a cvt works.....
I don't know what all this "they don't work" garbage is cause I've installed them on a 400 Bergman and a 300 Forza and they have worked nicely. Better acceleration, better top speed (or lower rpm at cruising speed) and a wider rpm range between throttle on and throttle off. Meaning I can keep the revs lower when I limit throttle for relaxed riding AND get higher revs at WOT. It sounds like your theorizing rather than having actually tested these... Bad video imo.
Your comment on limit throttle revs lower and highers revs at WOT is a very good indicator of placebo effect.. they are not advertised that way and they are not supposed to work that way.. centrifugal force equals mass of the rollers by angular velocity square multiply by distance.. the higher the rpm, the higher the distance, the more the pulley wants to close. Changing the mass will only lower OR increase the whole result, it will never be both.. So i guess you probably have changed other stuff as well to have got that same effect or your observation is purely a placebo effect..
The speed of changing the ratio is the gain of using these. Not the ratio at idle or WOT. This measurement video is of little use to the effect provided by the dynamics of the weights change.
This video is more of dr pulley design claiming to increase the lowest and highest ratio.. comparing 30 dollars dr pulley 16g to a 6 dollars normal rollers 16g. They both work exactly the same at the same weight. Alot of people felt the difference after using dr pulley because they went from original weight rollers to a far lighter rollers.. eg. 20g to 16g. Instantly they felt dr pulley sliders are good. Try changing 20g dr pulley to 16g normal rollers.. then you will say dr pulley is a waste of money..
Placebo effect ! there is no diiference ! only that DR pulley last way way longer
@@mlxnrzhrdr pulley wil last 40.000 km .......normal stock maybe 6000.... so do the math .......5 dollar rollers are rcrap and go maybe 3000km
My aprilla sr150 not going speed from 40kmph what's problem
Might be a weak contra spring.. some may called it spring fade..