Dr Pulley Sliding rollers

[adam_button]

Anyone had any joy or used the Dr Pulley Sliding rollers for the Variator, rather than the std ones?



The look good in the video, and do what I would like, which is to reduce engine rpm and give a bit more top end, but would love to hear if anyone has actually used them before I break open the CVT.

Ta

Adam

[macamxthe1st]

I used 18g sliders on my last Burgman with great results, peps up the bottom end and gives more relaxed cruising. Best bang for buck that I have come across. Will be buying a new Burgman very soon and will have the sliders fitted at PDI. Heartily recommend them.

Geoff.

[rossm]

Used them in three of my scoots, well worth it

[adam_button]

Thanks both, just confirmed that it's worth the time and effort fitting them

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[SH125Paul]

Fitted them in my Xmax250, Fitted in the XMax400, will prolly fit in the SH125, as every little helps...
Thing to watch is not to go too light - the blurb says go 10% to 15% lighter... i'd stick with 10% (or under if the nearest gram weight) or teh scoot can end up too revvy - especially for town use...
Blah blah explination site: http://www.unionmaterial.com/rollerweight6.htm
Sales Site (Germany): http://drpulley.shopnix.de/index.php?language=en
Model List / Weights / Part Numbers etc: http://www.drpulley.info/drpulley_docs/Typenliste.htm
Some sizes are listed on eBay...

[adam_button]

Cheers Paul, much appreciated

[Superscoot]

A 400cc Burgman before/after video:


A before/after SYM GTS 300i video illustrates that Dr Pulley gets you to 60km/hr faster - but it does actually take longer to get to 90km/hr than with standard rollers - so it's swings and roundabouts:


I've decided against fitting Dr Pulley sliders to my Daelim SV250 scooter - no evidence found yet to convince me I'd be better off with them fitted to my maxi scooter

[SH125Paul]

Just ordered SR2015/6 15g rollers plus the 2015-J sliding pieces for the SH...

[Jorgem]

Morning all (and happy holidays). Excuse my ignorance but what's really the advantage? Better acceleration? Cheers


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[SH125Paul]

Sorry for a 'short' reply but google it and take a look at the vid on youtube explains a lot better than i can...
but i'll have a go...
The material is 'longer life' than most rollers,
The shape, a sort of pinched circle / or rounded segment, and they slide up the variator ramp, rather than being round like std rollers...
A lower 'low' variator position and therfore a lower gear, to help start off / together with running a slightly lighter weight to improve acceleration... so should be roughly the same gearing at the same revs with normal round rollers...
A higher 'high' variator position, that would usually look to slightly extend the top speed... but as this is more based on the scooters power and max revs, coupled with the slightly lighter weight (rather than heavier which reduces acceleration but looks to increases the gearing for for a given engine rev range and speed...) gives a higher or same speed at a slightly reduced revs, also giving a reduction in fuel consumption...

A bit like half a tooth off the front sprocket of a motorbike in say in 1,2,3... and half a tooth more in 4, 5 (and 6 if it has one...)
or 1 more tooth on the '1st' and 1 less on the '5th' on a push bikes rear cassette...