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 longevity off Dr Pulleys

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Old Limey
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PostSubject: longevity off Dr Pulleys   Thu Mar 29, 2018 4:35 am

Like most people I have fitted Dr Pulley sliders, but, I wondered how long before they should be changed? I don't mean all the technical buff about measuring, if normal pulleys have a life of roughly 20/30 thousand miles what ,roughly should we expect from the pulleys, any ideas?
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Cosmic_Jumper
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Cosmic_Jumper

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PostSubject: Re: longevity off Dr Pulleys   Thu Mar 29, 2018 7:57 am

I measured my original set of 28 gm Dr Pulley sliding weights with a digital caliper. They were in-use for 60, maybe 70 thousand, miles and had no measurable wear. FWIW I sprayed PB Blaster with Teflon on the weight ramp tracks.

Currently I've switched to 26 gm Sliders and Dr Pulley ramp plate Sliding Pieces.

Tim
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Old Limey
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Old Limey

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PostSubject: Re: longevity off Dr Pulleys   Thu Mar 29, 2018 10:29 am

Thankyou for early reply, I use the brake cleaner spray on the variator and metal parts but just use a cleaning cloth on slider parts. I wonder what the sliders are made of, probably a trade secret.
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The Bern
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PostSubject: Re: longevity off Dr Pulleys   Thu Mar 29, 2018 4:37 pm

Old Limey, you could give the ramp tracks a coat of this to make them 'slippy' ....

https://tinyurl.com/yc2sxyzq
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gavinfdavies
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PostSubject: Re: longevity off Dr Pulleys   Sat Mar 31, 2018 12:51 pm

what would the benefit of lubed ramps be? Wouldn't it lower the gearing for a given rpm, since the sliders would move further out under centrifugal force due to there being less resistance?
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The Bern
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The Bern

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PostSubject: Re: longevity off Dr Pulleys   Sat Mar 31, 2018 5:21 pm

No it wouldn't alter the gearing, it would improve the smooth operation of the moving componants thus reducing wear & increasing their working life
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cliffyk
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PostSubject: Re: longevity off Dr Pulleys   Sun Apr 01, 2018 12:50 pm

FWIW I ran DRP sliders in my '03 Burgman 400 for over 45 k miles with no discernible wear, and see no reason why they would not last 100 k miles
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