Revisiting Dr. Pulley Sliders

[xsel777]

The rate of exchange is hectic here,  so I filled stock rollers with 2 part epoxy glue.
I don't have a sensitive scale so can't say how much extra they weigh, but I do feel that I can get 150kmh if I want to.
I don't exceed 140kmh nowadays.
I also made a washer the one that is fitted to the outer edge of the boss b4 fitting the variator face with fins.
I made it thinner with my grinder, and, I see a 400rpm improvement(ie,  lower rpm) at 140kmh.
Revs now sit at 7100.
There is a bad vibration if this washer is removed, this the adaption of thinning it instead.

With the epoxy in the rollers, it will be possible to drill a hole and fit bolts in there with the head removed,  to make them heavier, if needed.
Spook, in Taiwan, also machined his variator, so the rollers can travel out further, thus getting higher speed.
The thing is, I test drove a 2009 model when I bought mine and it maxed at 160kmh, so this allusive max speed is my goal.
Not for riding at that speed all the time,  but just knowing it is available if needed.

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[mrbios]

...
I don't have a sensitive scale so can't say how much extra they weigh, but I do feel that I can get 150kmh if I want to.
...

very interesting.  That is a large reduction in rpm.  You could use an inexpensive digital scale - costs ~ $15 USD.

[Stig / Major Tom]

I would be concerned about varying (not perfectly equal) weights of these homemade rollers. ....causing stress on bearings when spinning at speed.
? No?
Stig

[mrbios]

I would be concerned about varying (not perfectly equal) weights of these homemade rollers. ....causing stress on bearings when spinning at speed.
? No?
Stig

Extra wear on the bearings yes, but the main issue is vibration from being out of balance.  Digital scale so you can at least get the weight equal.

[xsel777]

Stig, that is  a concern, but my thinking was that the area the glue fills is the same, so same weight abouts,and each roller wear slightly differently (6 of one, half a dozen of the other) but I will take  a look at one of my China sites, and see if I can get one there. Better safe than sorry.

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[xsel777]

Update, 7usd for a precision? Scale up to 500grams with 0.01g sensitivity.
Can't beat that.
But I will be beating(drumming) the desk for month exciting for it!

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[xsel777]

I have this riding buddy.
He has a carburetor model xc500,  and mine is EFI.
He pulls away slowly, but gets 155kmh/7000rpm.
I pull away quite fast, but only get 140kmh/7100rpm.
What cvt differences account for this variance?

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[Stig / Major Tom]

I have this riding buddy.
He has a carburetor model xc500,  and mine is EFI.
He pulls away slowly, but gets 155kmh/7000rpm.
I pull away quite fast, but only get 140kmh/7100rpm.
What cvt differences account for this variance?

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Worn belt (thinner now)
Worn rollers.
Wrong size belt.
He has sliders....you have rollers.
Whatever you guys are running.....your rollers/sliders are too light....his are heavier.
You're a big dude.
Republicans are known to be more of a drag.
Buffet of the above.
Stig

[xsel777]

Thanks for the input stig.
The Republican reference is very useful to me here in  South Africa..... 😀 :-)

But seriously,
He has got stock rollers, just installed. His take off is slower now.
He has not changed his belt.
The same belt since he bought the scooter.
My rollers are also new.
The only big part of me is my "boep" (extended tum)...which I suck in, when I remember... ;-)


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[alyn 7777]

25,000 mile update on the 30gr Dr. pulley Sliders in my 2009:

Sold my 2009 Kymco RI ABS in early 2014 so haven't posted since then but just picked up another 2009 500RI (no ABS :-( unfortunately) and decided to contact the guy I sold my old 2009 to, to get an update on the 30gr sliders I installed in it, as I want to install the same in my new scoot.

My buyer told me he now has 25,000 miles on my old 2009 500 Ri and the sliders have performed flawlessly. No difference in the great performance he experienced when he bought it from me and no issues whatsoever. I installed those sliders at 4k which means they've withstood 21,000 miles. I still believe correct installation technique is key with the Sliders and I stand by everything I wrote in the first post of this thread.

FWIW.

[Stig / Major Tom]

Thank you for the update.
Interesting to read about those shooting for 100mph on a Kymco.
Safe riding.
Stig

[alyn 7777]

Finally got around to opening up the CVT on my new (used) 2009 RI that I just purchased with 16k on it. Belt was perfect (28.4 width), rollers looked okay, but the Clutch bell had blue spots so will be ordering a new one as I had such a huge improvement when I went to a new bell on my last 2009 in terms of eliminating the squealing.  Am going to install 31gr Dr Pulley Sliders and see how they perform as the buyer of my last bike has had 20k trouble free miles with the 30gr sliders I put in it.  Will report back.

[alyn 7777]

Got the new clutch bell installed on the new (used) 2009 500 and went ahead and installed 31gr Dr. Pulley Sliders. I did use a dremel to smooth out the slots where the rollers slide in the variator to make sure their travel would be smooth as I did on my first 2009. Put it back together and just like before - it rides like a totally different bike!  I like the 31gr sliders better than the 30s I installed on my previous bike as the rpm/speed ratio is a little closer to stock.  But the bike is much quicker off the line and the clutch engages with no slippage with the new bell. Total investment -- $100. Night and day difference in the ride, at least on this 500 which has 17k miles on the odometer.

[xsel777]

Well done, enjoy the ride. My sliders melted, so I went with a Malossi sports variator and stock rollers, and an extra  spacer 1mm thick, with the result that my top end is 155kmh at 7500rpm.pull away is ok. Just my results.

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[TeamTEOR2]

So I am going to swap back to stock rollers as possibly. I already have a brand new set of rollers.  what I need to know is there a need to get a new set of those V shaped parts (22132) that go between the roller/sliders to take it back to stock? I am unaware if the Dr.Pulleys sliders came with a replacement of that part.  I need to do something to get my bike out of that redline zone.  Blowing a tank in a 50-60 mile highway ride sucks.