The Honda PCX / Forza / ADV150 / SH Forums

Anyone has 13g dr pulley sliders that want to swap them to 10g? 10g is perfect for stock 125cc as it will spin it to the magic 8k rpm best performance....The extra power on mine has shifted the weight of my sliders/rollers to 12.5g for same rpm but i have 12g set which is just a tad short of what i need but mix them with 13's and itll be perfect....I do have rollers in 12.5g but i can feel the diff in power delivery between the rollers and sliders,sliders ARE better!

Cheers

I FINALLY have a tach on the way so I'll start playing with the roller weights. AND I have a set of 12g sliders I'll have to toss in to try.

My 11.5g slider did not increase the RPM as much as I hoped but that's ok.
I tend to agree that 10g would be about right.

I use 10g rollers taken from Suzuki Skywave on my PCX150

Acceleration: Really different! Can feel the g-force (bombastic )
Torque: Since I use the bike quite a lot on unpaved trails, I can feel much larger torque after using the 10g compared to the stock
Top speed: mere 5-10kph additional

Drawback: Noisy... Yes, wind noise since the Skywave rollers has larger inner diameter

Overall: Really satisfied!

Going to try Sliders soon....

Different versions of the PCX apparently start out with different weights in the stock variator. My 2013 USA PCX150 had weights which weigh 106gm for the 6 of them for an average of 17.66 gm each. I am running 12gm sliders and the pulling rpm was increased to about 7,800. The responsiveness of the gearing changes is also much improved. I also have to say that I have little to none of the dreaded progressive torque slot effect that tends to hang the rpms down at higher speeds above 40 mph.
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Other PCX years and models around the world may start out with lighter weights to begin with. So If you bike had a stock variator that was designed to work with 15gm weights (Europe version early PCX125's?), changing to 12gm sliders won't make as much difference as it was for me. Aftermarket variators may be totally different again.

rpm² is inversely proportional to mass, so minor variations are not worth worrying about.
If you want 40% more rpm then you need to halve the mass of the sliders/rollers.

wingz wrote: minor variations are not worth worrying about.
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The difference between 18gm and 15 gm stock rollers is not minor. If you are starting with 15 gm rollers and they give you a pulling rpm of 6,800, you may want to start with 9.5gm sliders. If your stock rollers are 18gm then 11.5 sliders should get you above 8,000rpm. Weigh your stock rollers before you order. And spen $55 on a tach so you will know what you are really getting with any different setups.

To my mind, the 18g vs 15g is because the PCX150 is more powerful than the PCX125.

My PCX150 has 11.5g sliders at 7500rpm.
10g sliders would give me about 8000rpm.
9g sliders would give me about 8500rpm.

I'm happy with the 11.5g sliders but am curious whether I'll get a significant improvement in acceleration using 9g or 10g sliders.

So is the general rpm change 500rpm per oz? My new tach arrives tomorrow so I can begin tuning. Also, who makes the hardest rollers? I have rough ramps in the yuminashi variator so it must use harder rollers or replacements more often.

Mgalutia88 wrote:So is the general rpm change 500rpm per oz?

oz is 28g

I would use:
[target mass] = ([current rpm] / [target rpm])² x [current mass]

This is not 100% accurate because the increased power caused by shifting the rpm would tend to raise the rpm slightly.
In other words, you would likely get slightly higher rpm than the calculation would predict.

I have a 125cc 2014 LED pcx - i just mounted Dr pulley sliders 12.5 gr- i feel it's more rev happy and livelier accelerating from 40 to 70 kmh- Not sure any difference from 0-50. The engine is a bit louder. It feels different, can't say it's worst its just working in a different way, maybe less relying on torque.. Other than that my pcx vibrates quit a bit less, it's very smooth now. Gone is a weird resonance i had at around 50 kmh from the belt. My old rollers had 11,000 Km on them, no flat spots surprinsingly and they weight 14,7 gr (total of arounf 88 gr) on the scale now. I thought it would bring more improvements tbh, what's the recommended set up for a 2014 esp led 125cc? and Btw what are the tolerances of stock weights, there is not a word on them in the workshop manual i just receiced today.. Thanks

Hi guys!
I just bought a 150 PCX and I'm reading a lot of information ... like us, Dr Pulley Magic
which do you think will be the best option for my PCX?

Thank you!

11.5 or 12gm.

Are sliders or rollers better? Is it a difficult process to swap them, and do I need any special tools?

Jacito wrote:Are sliders or rollers better? Is it a difficult process to swap them, and do I need any special tools?

Go to the tech section here, it’s written there several times. Sliders are good but certain variators take rollers. If you’re trying to use a stock variator, sliders are fine ;12 gram or 13 grams work well.