Dr Pulley Sliders & Fuzzy Washer
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Hooked
DOT Certified? (Sold)MP3 250 (Now)MP3 400 Midnite Blue
Joined: 25 Jun 2012
Posts: 117
Location: Long Island, New York
Sat Apr 25, 2015 3:25 pm quote
Job: Replace OEM rollers and shoes, install Fuzzy Washer & Replace Belt

Items Purchased:
[1] set Dr Pulley Sliders 25x17 16gm sliders
[1] set Dr Pulley shoes
[1] CVT Belt
[1] Buzzetti variator holding tool
[1] 21mm six-sided socket
[1] 27mm six-sided socket

Duration: 3 hrs

Cost: $215
Money saved: $300-350

Difficulty [1 easy - 5 hard] - 3

Results: no shudder off the line through [0-30mph] and very quick acceleration 10-60mph. Significant difference. Well worth the price and effort

Very special thanks to:

BubbaJon , Joe Bulva here on MV and also MicBergsma on youtube.

Their well documented instruction along with a CVT diagram is all that is needed to perform this job.

I think the HiT clutch is next up!

Last edited by sscheitel on Mon Apr 27, 2015 12:19 pm; edited 1 time in total
Veni, Vidi, Posti
RIP: MP3 500 - Brutto Moto
Joined: 10 Jun 2008
Posts: 5278
Location: Austin, TX
Sat Apr 25, 2015 5:40 pm quote
Re: Dr Pulley Sliders & Fuzzy Washer
sscheitel wrote:
Job: Replace OEM rollers and shoes, install Fuzzy Washer & Replace Belt

Items Purchased:
[1] set Dr Pulley Sliders 25x17 16gm sliders
[1] set Dr Pulley shoes
[1] CVT Belt
[1] Buzzetti variator holding tool
[1] 21mm six-sided socket
[1] 27mm six-sided socket

Duration: 3 hrs

Cost: $215
Moeny saved: $300-350

Difficulty [1 easy - 5 hard] - 3

Results: no shudder off the line through [0-30mph] and very quick acceleration 10-60mph. Significant difference. Well worth the price and effort

Very special thanks to:

BubbaJon , Joe Bulva here on MV and also MicBergsma on youtube.

Their well documented instruction along with a CVT diagram is all that is needed to perform this job.

I think the HiT clutch is next up!
Great!
The HiT clutch and Malossi clutch spring is next on my list - due for a belt change in about 1,000 miles. I may jump in early if it looks like a hot summer.
Hooked
2008 MP3 400
Joined: 19 Feb 2015
Posts: 204
Location: Fort Collins, Colorado
Sun Apr 26, 2015 10:23 pm quote
This is for your 400 correct?

Why did you decide on 16g?
Some say 17g is ideal but others go less.
I'm debating which i put on my 400.

Thanks!
Hooked
2008 MP3 400
Joined: 19 Feb 2015
Posts: 204
Location: Fort Collins, Colorado
Sun Apr 26, 2015 10:24 pm quote
Re: Dr Pulley Sliders & Fuzzy Washer
[/quote]
Great!
The HiT clutch and Malossi clutch spring is next on my list - due for a belt change in about 1,000 miles. I may jump in early if it looks like a hot summer.[/quote]

what are the advantages of those?

why use different springs than the HiT comes with?

any advantages of using Malossi spring with oem clutch?

thanks!
Hooked
DOT Certified? (Sold)MP3 250 (Now)MP3 400 Midnite Blue
Joined: 25 Jun 2012
Posts: 117
Location: Long Island, New York
Mon Apr 27, 2015 12:11 pm quote
Eakins wrote:
This is for your 400 correct?

Why did you decide on 16g?
Some say 17g is ideal but others go less.
I'm debating which i put on my 400.

Thanks!
This was done on my MP3 400

I chose 16gm because others that I trust here on MV with more experience than I suggested that 16gm provides a good balance of performance and acceleration. That's good enough for me and given the outcome I couldn't be happier!

To tell you the truth I never noticed the shudder off the line until it wasn't there
Hooked
DOT Certified? (Sold)MP3 250 (Now)MP3 400 Midnite Blue
Joined: 25 Jun 2012
Posts: 117
Location: Long Island, New York
Mon Apr 27, 2015 12:14 pm quote
Re: Dr Pulley Sliders & Fuzzy Washer
BubbaJon wrote:
Great!
The HiT clutch and Malossi clutch spring is next on my list - due for a belt change in about 1,000 miles. I may jump in early if it looks like a hot summer.
I can't wait to see the wiki [wink wink]

I think Bitubo shocks are going to be on my short list for this summer as well.

Thanks again BubbaJon!!
Veni, Vidi, Posti
Neutrino MP3 492.7 AK, 2013 Moto Guzzi Norge
Joined: 29 Mar 2008
Posts: 20976
Location: Kingston, Tennessee, Tn
Mon Apr 27, 2015 6:10 pm quote
16's are great for the 400's 17's are great for the 500's
Hooked
DOT Certified? (Sold)MP3 250 (Now)MP3 400 Midnite Blue
Joined: 25 Jun 2012
Posts: 117
Location: Long Island, New York
Tue Apr 28, 2015 7:39 am quote
old as dirt wrote:
16's are great for the 400's 17's are great for the 500's
Case in pont.
Hooked
2008 MP3 400
Joined: 19 Feb 2015
Posts: 204
Location: Fort Collins, Colorado
Tue Apr 28, 2015 11:32 pm quote
old as dirt wrote:
16's are great for the 400's 17's are great for the 500's
Thanks. I thought I was reading 17g was ideal for the 400 in another thread, but sounds like I misread that.

I also see in 2010 the recommended for a 400 was a 15g, but now it's a 16g.
Speak up! Your results with the new thinner Fuzzy Washer
Enthusiast
2009 MP3 500
Joined: 30 Sep 2014
Posts: 68
Location: Chandler, AZ
Thu Jun 18, 2015 8:51 am quote
I just installed Dr. Pulley rollers and sliders last month since I was replacing the clutch and belt anyway. I had to use 16gr rollers as I couldn't locate the 17gr rollers recommended by other forum members. Every source I checked with did not stock that weight. Strange. Anyway, not real happy with the new rollers. They do not all lock in place until I'm over 30mph. Up to that speed they are very noisy. And yes, I triple checked they were correctly installed. The original rollers were much quieter. Over 30mph they are silent and work normally. No noticeable change in variator performance overall. (I have not installed a Fuzzy Washer.) Other forum members have said the Dr. Pulley rollers last several times longer than the Piaggio rollers, which would be good. On the other hand, the HIT clutch I installed is a huge improvement over the OEM one!
Enthusiast
2009 MP3 500
Joined: 30 Sep 2014
Posts: 68
Location: Chandler, AZ
Thu Jun 18, 2015 9:35 am quote
Just wanted to add, I have no idea whether the actual problem is the Dr. Pulley rollers and/or the Dr. Pulley sliders. Either set of parts not moving smoothly at low rpm could be responsible for the low speed clatter from the rollers.
Sponsor
Granturismo 218
Joined: 04 Feb 2013
Posts: 4750
Location: South Carolina
Thu Jun 18, 2015 9:10 pm quote
SteveB77 wrote:
Just wanted to add, I have no idea whether the actual problem is the Dr. Pulley rollers and/or the Dr. Pulley sliders. Either set of parts not moving smoothly at low rpm could be responsible for the low speed clatter from the rollers.
If they're not moving right, the thing is going to come apart. You don't get abnormal noise out of the variator cover up to 30 mph without something serious wrong in there. And if you do a search of threads about things going horribly amiss in the transmission, most of them start with "I recently installed...."
Veni, Vidi, Posti
Neutrino MP3 492.7 AK, 2013 Moto Guzzi Norge
Joined: 29 Mar 2008
Posts: 20976
Location: Kingston, Tennessee, Tn
Fri Jun 19, 2015 2:14 am quote
Motovista wrote:
"I recently installed...."
yup the root of all evil with recent issues.
Ossessionato
2016 MP3/500 Sport ABS, 2009 MP3/250, 2012 GTS Super 300ie
Joined: 08 Jul 2011
Posts: 4113
Location: Marietta, GA
Fri Jun 19, 2015 4:01 am quote
What's confusing most often of all these Posts...
Is what Weight to use?

I assume each person has observed different experiences based on the load they carry on the Bike. I don't know what to believe sometimes, so I just stick with Stock.

See Picture I have attached as to what Buggy Parts has Published.

Keith,
Marietta, GA

buggy.jpg

Veni, Vidi, Posti
RIP: MP3 500 - Brutto Moto
Joined: 10 Jun 2008
Posts: 5278
Location: Austin, TX
Fri Jun 19, 2015 8:07 am quote
This has been answered so many times - Google-fu is your friend.

Basically 16's work best in a 400, 17's work best in a 500.
Ossessionato
2016 MP3/500 Sport ABS, 2009 MP3/250, 2012 GTS Super 300ie
Joined: 08 Jul 2011
Posts: 4113
Location: Marietta, GA
Fri Jun 19, 2015 9:45 am quote
BubbaJon wrote:
This has been answered so many times - Google-fu is your friend.

Basically 16's work best in a 400, 17's work best in a 500.
Buggy Parts NW only shows 25x17 with 15g, 16g, 18g, 19g, 21g
Veni, Vidi, Posti
RIP: MP3 500 - Brutto Moto
Joined: 10 Jun 2008
Posts: 5278
Location: Austin, TX
Fri Jun 19, 2015 7:51 pm quote
klaborde wrote:
BubbaJon wrote:
This has been answered so many times - Google-fu is your friend.

Basically 16's work best in a 400, 17's work best in a 500.
Buggy Parts NW only shows 25x17 with 15g, 16g, 18g, 19g, 21g
Then call them to find out if they're simply out of stock
Enthusiast
2009 MP3 500
Joined: 30 Sep 2014
Posts: 68
Location: Chandler, AZ
Fri Jun 19, 2015 11:18 pm quote
Thanks for the responses. All were what I expected to hear I just have a hard time believing 1gr per roller (less than 6% lighter) is the issue. I think I'm just going to put the OEM rollers back in. On reflection, as a retired tool and die machinist, it makes sense the design of the OEM rollers would have a smoother, quieter, and quicker action but with less total travel and contact area. On the other hand, the Dr. Pulley sliders seem nearly identical to the originals.
Veni, Vidi, Posti
RIP: MP3 500 - Brutto Moto
Joined: 10 Jun 2008
Posts: 5278
Location: Austin, TX
Sat Jun 20, 2015 4:45 am quote
SteveB77 wrote:
Thanks for the responses. All were what I expected to hear I just have a hard time believing 1gr per roller (less than 6% lighter) is the issue. I think I'm just going to put the OEM rollers back in. On reflection, as a retired tool and die machinist, it makes sense the design of the OEM rollers would have a smoother, quieter, and quicker action but with less total travel and contact area. On the other hand, the Dr. Pulley sliders seem nearly identical to the originals.
Well I guess you're from Missouri when you have hundreds of MP3 riders that will tell you with zero uncertainty that they work and work very well. The funny thing about the weights is the "best" values are a sort of cusp - 1 gr less and the revs go too high at at startoff to be effective, 1 gr more and it's more like stock.
So in the example of the 500 16 gr results in excessive revs at start off, 18 gr is better but kinda "meh". 19gr is to my discernment not much different than stock. 17 really is a sweet spot and especially so with the Fuzzy Washer.
I might add that my Dr Pulleys have been in for over 30,000 miles. I'm starting to feel a little grundling but I'll refrain from deciding it's the weights until I open it up for my next big maintenance. In any case that's 5 times the life of the originals.
Veni, Vidi, Posti
Neutrino MP3 492.7 AK, 2013 Moto Guzzi Norge
Joined: 29 Mar 2008
Posts: 20976
Location: Kingston, Tennessee, Tn
Sat Jun 20, 2015 5:06 am quote
BubbaJon wrote:
SteveB77 wrote:
Thanks for the responses. All were what I expected to hear I just have a hard time believing 1gr per roller (less than 6% lighter) is the issue. I think I'm just going to put the OEM rollers back in. On reflection, as a retired tool and die machinist, it makes sense the design of the OEM rollers would have a smoother, quieter, and quicker action but with less total travel and contact area. On the other hand, the Dr. Pulley sliders seem nearly identical to the originals.
Well I guess you're from Missouri when you have hundreds of MP3 riders that will tell you with zero uncertainty that they work and work very well. The funny thing about the weights is the "best" values are a sort of cusp - 1 gr less and the revs go too high at at startoff to be effective, 1 gr more and it's more like stock.
So in the example of the 500 16 gr results in excessive revs at start off, 18 gr is better but kinda "meh". 19gr is to my discernment not much different than stock. 17 really is a sweet spot and especially so with the Fuzzy Washer.
I might add that my Dr Pulleys have been in for over 30,000 miles. I'm starting to feel a little grundling but I'll refrain from deciding it's the weights until I open it up for my next big maintenance. In any case that's 5 times the life of the originals.
I totally agree
Ossessionato
Gilera Fuoco 500ie
Joined: 11 Oct 2009
Posts: 3969
Location: Netherlands Zwolle
Sun Jun 21, 2015 12:19 am quote
i think he installed them the wrongway arround or order RR instead of SR's
Hooked
MP3 500
Joined: 24 Oct 2010
Posts: 262
Location: Columbus OH USA
Tue Jun 23, 2015 8:20 am quote
klaborde wrote:
BubbaJon wrote:
This has been answered so many times - Google-fu is your friend.

Basically 16's work best in a 400, 17's work best in a 500.
Buggy Parts NW only shows 25x17 with 15g, 16g, 18g, 19g, 21g
Couldn't some of the metal core be removed to reduce the weight of an 18g slider to to 17g?

BubbaJon says 17g is the sweet spot for an MP3 500. Is there a sweeter spot a little bit above or below 17g?
Molto Verboso
MP3 500
Joined: 20 Apr 2008
Posts: 1290
Location: Utah
Tue Jun 23, 2015 4:29 pm quote
Use 4-16g & 4-18g you will get 17g equivalency.
Just make sure they are placed boy-girl-boy-girl.
Hooked
MP3 500
Joined: 24 Oct 2010
Posts: 262
Location: Columbus OH USA
Tue Jun 23, 2015 5:49 pm quote
Maynard Schweigert wrote:
Use 4-16g & 4-18g you will get 17g equivalency.
Just make sure they are placed boy-girl-boy-girl.
That could actually work as we have two 500cc MP3s.
Member
Gilera Fuoco 500
Joined: 16 Jul 2015
Posts: 9
Location: London, England
Thu Jul 16, 2015 9:39 am quote
So I have just done the Dr Pepper sliders or whatever they are called and the Fuzzy washer, and I have to say the the bike is so much smoother pulling away. Whether that's from standstill or from 20 mph, there is virtually none of the juddering that I had before.

I blew out a whole load of dust with an air line so maybe that has helped as well. Riding around London I am lucky to get up to 30 mph most of the time so this makes for a much better ride.

I still have 4 washers if anyone wants one. See my separate post.
Hooked
2010 gts 300 super super. 09 MP3 500 super duper
Joined: 02 Apr 2013
Posts: 255
Location: tampa
Wed Oct 10, 2018 7:34 am quote
beo 500 uses same 21 gram stock roller. installed 18g sliders. very happy with results. low gear lull gone. (engage faster) fabulous midrange excell) and it gets about 5mpg better mileage cruising at lower rpm. top speed change unknown as no before after done on that.
Enthusiast
Piaggio MP3 250, BigBeo
Joined: 30 May 2015
Posts: 89
Location: Chelyabinsk, Russia
Wed Oct 10, 2018 10:00 am quote
Beo 500 with 8 weights?
Hooked
2010 gts 300 super super. 09 MP3 500 super duper
Joined: 02 Apr 2013
Posts: 255
Location: tampa
Sat Oct 13, 2018 6:29 pm quote
just installed 17g sliders in my 2009 mp3 500. I cant get over the improvement this makes. I have installed sliders in several different bikes now. this variator responds exceptionally well to sliders. not only is the bike faster and smoother everywhere but its like the bike now has first gear where it seemed to start from second on the factory rollers. extremely happy with the results. holy wow my friends.
Enthusiast
Piaggio MP3 250, BigBeo
Joined: 30 May 2015
Posts: 89
Location: Chelyabinsk, Russia
Sun Oct 14, 2018 7:26 pm quote
So, do you have 6 or 8 weights?
Hooked
Joined: 27 Oct 2016
Posts: 165
Location: England
Mon Oct 15, 2018 2:40 am quote
Get the Hit clutch you wont regret it.
Hooked
2010 gts 300 super super. 09 MP3 500 super duper
Joined: 02 Apr 2013
Posts: 255
Location: tampa
Mon Oct 15, 2018 6:01 am quote
Jah wrote:
So, do you have 6 or 8 weights?
the 400 460 and 493 all use 8 weights
Enthusiast
Piaggio MP3 250, BigBeo
Joined: 30 May 2015
Posts: 89
Location: Chelyabinsk, Russia
Tue Oct 16, 2018 11:56 am quote
Nah, I have 6-weights Big Beo.
Veni, Vidi, Posti
2008 MP3 500, 2013 BV350
Joined: 13 Oct 2012
Posts: 5972
Location: Ashburn, Va. Home to the Internet
Tue Oct 16, 2018 1:30 pm quote
jerryd wrote:
Jah wrote:
So, do you have 6 or 8 weights?
the 400 460 and 493 all use 8 weights
Most 460 have 6 rollers from my reading.
Ossessionato
Gilera Fuoco 500ie
Joined: 11 Oct 2009
Posts: 3969
Location: Netherlands Zwolle
Wed Oct 17, 2018 11:40 am quote
yes the 460cc most use 25x22 6 times 23 or 24 gram stock is 27
Hooked
2010 gts 300 super super. 09 MP3 500 super duper
Joined: 02 Apr 2013
Posts: 255
Location: tampa
Thu Oct 18, 2018 6:00 am quote
I stand corrected. best to call a dealer and give them our vin number?
Ossessionato
Gilera Fuoco 500ie
Joined: 11 Oct 2009
Posts: 3969
Location: Netherlands Zwolle
Thu Oct 18, 2018 12:23 pm quote
it depents on the build date

a beverly before 2004 has 6 after 2005 is a twinspark with 8
A nexus and atlantc before 2005 also uses 6 weights
Both where never produced as a twinspark 492.7cc

a maleguti Spider 500 also uses 6

and a beo is a strange one did have some coming in with 8 and 6 both 2005
Hooked
2010 gts 300 super super. 09 MP3 500 super duper
Joined: 02 Apr 2013
Posts: 255
Location: tampa
Mon Oct 22, 2018 8:54 am quote
anyone have approximate rpm change per gram for 8 slider on a 500?

went to smaller tire rpm went up about 600rpm. need to bring it back down. have 17g. thinking I need to try 19 and go from there.
Hooked
2010 gts 300 super super. 09 MP3 500 super duper
Joined: 02 Apr 2013
Posts: 255
Location: tampa
Wed Oct 24, 2018 6:32 am quote
jerryd wrote:
anyone have approximate rpm change per gram for 8 slider on a 500?

went to smaller tire rpm went up about 600rpm. need to bring it back down. have 17g. thinking I need to try 19 and go from there.
so to answer my own question.

both stock and 17g sliders my rpm was around 3200 at 40km cruising speed.

I switched to smaller back tire 140/60. RPM went higher everywhere. at same 40km the rpm was at 3800 rpm. the bike may have sounded better at higher RPMs but bike did not accelerate better. It may even have lost a tad. I try 18g sliders and the RPM reduced by 600 RPM. far more than I thought it would for just 1 gram change. RPM stay very low and I realize that is what I like about this twin spark engine. Very torquey at low RPM. kinda of like a tractor motor.
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