Check this out:

http://www.silverwing600.com/t3935-dr-pulley-sliders-to-lube-or-not-to-lube

bigbird has it nailed.

Thanks,
Gar

Today I took the Swing for a longer ride of 50km to test out the Dr. Pulley 24gr sliders. I won't be doing any more experimenting with any different weights, as I have now nailed it for me.

The 24gr allows the engine to rev up to about 4k rpm during moderate acceleration. This keeps the engine on its sweet spot of ample torque with no vibration or belt slap. The heavier sliders (26gr and especially the 28gr) cause the varaitor faces to move together at a lower rpm, forcing the drive belt higher up on the faces. This keeps the engine rpm lower on acceleration, causing leisurely acceleration, more vibration, and lugging. The 24gr have less centrifugal force on the variator ramp, slowing the squeezing of the drive faces until almost 4k rpm is reached. This is easier on the engine under heavy throttle due to less lugging. The Swing engine's torque peak is at 5k rpm. That is where the engine runs most efficiently.
As soon as the throttle is rolled off to maintain a steady cruising rpm, the rpm fall just as they did with the 26gr and 28gr. Cruising rpm is identical for all sliders. At 100 km/h indicated (62.5 mph) the engine is at a steady 4.5k rpm. At 110 km/h indicated, the engine sits at 4.9k rpm.

I'll be selling my 26gr sliders and am very happy with the performance of my Swing. I know many of you are content with the stock Honda rollers. But if you want a very smooth quiet drivetrain with better low speed acceleration and low highway cruising rpm, take a long look at the Dr. Pulley sliders.

Thanks once again for doing all the research and experiments for us,Bigbird, this will certainly save me a lot of time and trouble in the future

OK. I'm sold on the 24g sliders (almost) . I only have one question, and the answer may be in here somewhere, but I haven't found it. As I understand it, the lower weight of the slider (24g vs 26 or 28g) allows for higher rpms during take-off, but the same rpms at highway speeds. Does this mean that your effective top-end speed is the same, no matter which weight slider you use? And, if so, would your fuel economy be about the same, on mostly highway driving? (OK, two questions!)
Thanks,
Tracy

Thanks, Bigbird. That's my understanding of it, as well. I just wanted to make sure. I tried to order 24g sliders from BuggypartsNW today, but they are apparently out of stock. I considered buying your 26g sliders, instead, but think I will be happier waiting on the 24's.
Thanks again,
Tracy

Good morning.
It is really very simple. rollers role and sliders slide. Ha Ha
The rollers that came originally in your scooter are 28g and are round. The sliders are more triangular in shape and do not require any type of lubrication. Although some, including my self use a small amount of dry graphite powder on the sliders when installing.

Actually...they both slide.

Chris

I just installed the 26g sliders and they are fab! Moved the torque nicely down the rev range. Accelerating going up hill is no a pleasure not a chore. But BigBird, could you explain how this works. I was trying to explain it but failed miserably.

A little Dr. Pulley animation:



But in reality the dark grey part is fixed and the light grey part is moving (thats that part which pushes the belt outwards)

Good job Blackfly, that's what I was looking for.

Thanks to all of you who have had input on the "Sliders". I have a question.
I weigh about 215 and with my riding gear probably at some where around 240. I carry about 25 lbs of gear, extra tire plug kit, compressor etc so I am probably about 265 lbs plus give or take. I ordered the 26 sliders and have not received them yet out of Oregon. About $60.00 ttl. I have 24,500 miles on my 2005 Swing. I have "Metzler" tires. Now, Vealie you just put in 26 sliders do you think I will be happy with them? I have not checked the tolerance of the plates etc. but have a new belt installed at 18000 miles.
Old Dave in Western Nebraska altitude 3965 but run to altitudes of 12000 feet when I go over into Colorado.

I regularly have to climb a long steep hill and the Wing would struggle. It would labour and feel like I wanted to change down a gear. With the 26g sliders the slight change in rpm gives it that little bit more and I can get up the hill and even slightly accelerate.

It's the centrifugal forces I can't explain, this thread is getting longer all the time so I'll have a read back through it.

I installed the 26g Dr Pully Sliders in my 2005 Swing and "understood" they would improve my gas mileage. . . Wrong! I think it is smoother etc but I am still disappointed with the mpg. What do I need to ck next to get better mpg?
Old Dave

Exactly what is the advantage of each of the weights? I have the 26g in my 2005 I do like the way it performs now better than the stock rollers. Which of the Dr Pully sliders is most recommended and why?
Old Dave

Dave:
The way the weights work is this:
Lower weights give you better accelleration, but a bit less mpgs. Heavier weights give you better cruising mpgs, but a little less accelleration. Most guys are opting for weights in the 22g to 26 g range depending on their riding style and other factors like rider weight, and elevation.