Scooter Rollers V.S Sliders

[@ScootGarage]

thanks you legend! good thing iwatched this would have gotten sliders

[@edwinmendija8087]

Tuning your ride to fit you is just that an experiment. When I changed to lighter weights, acceleration/torque improved/top speed decreased. I experimented with increasingly heavier weights and eventually settled back with the stock weights for all around performance. My gy6 50cc engine has some modifications: 50mm Airsal domed piston, A9 cam, aftermarket gears (I forget the #'s), free flowing exhaust, and the use of a stock 150cc carb (I do that with all my builds) and the use of electric fuel pump. It will GPS to 60mph on flat highway on windless day no problem. Gotta' love these little engines.

[@seanmayo206]

What ya got that gy6 50 mounted on?

[@jerrystroessner5986]

Watch the video on "how to install Dr. Pulley sliders". You need to turn your sliders 180 degrees, you assembled them wrong. I have the exact Glixal 5g sliders, the package has NO install instructions. I grabbed my 6.5g Dr. Pulley instructions to find the correct install method noting that in your video the sliders are laying in the basket wrong unless you flipped them b4 assembly.

[@chickenderhun]

So you say ure using (or used) 5g sliders. Do you have it on 70cc bbk ? And what kinda contra and clutch spings are u using?

[@bikelifegee]

Bro your sliders are in wrong that could damage your motor

[@majordave239]

You seen thar too...

[@jmikew417]

I came across this in a roller/slider manufacture description: - Heavier Sliding Roller Weights= A Slower Take Off Speed with More Acceleration and A Higher Top Speed. - Lighter Sliding Roller Weights = A Faster Take Off Speed with Less Acceleration and Lower Top Speed. Of course the weight of the rider will impact this too.

[@jmikew417]

I watched a video about difference between rollers and sliders. Basically the biggest difference is that rollers tend to wear down and get flat spots faster than sliders, in fact they said that sliders will last 3 times longer before having to be changed. This has to do with the surface pressure between the roller/slider and the variator back plate. They showed examples of this on rollers and sliders. It was pretty interesting.

[@davidhofinger4927]

Apparently this wasn’t a fair example because they were the same exact weight but that’s what I wanted to test was the same exact weight one versus the other People have told me that as well from this video and living that moment I will not go with sliders rollers perform different but for me and my bikes I like them better

[@-TheDude-]

you should go up 1 gram when going to sliders from rollers. i first read that in a bunch of scooter mod forums and from experience i know it to be true. if you go down weight with sliders its just going to make your rpms go even higher, same as rollers. with the 4 strokes you need to tune these weights to stay in the max torque rpms, usually 7500rpm or so. initial takeoff should get you somewhat close to that rpm and stay close or at those rpms all the way through to top speed i believe. my scoot was screaming down the road topped out at 8100rpm, after i went up .5 gram with the sliders(was using 7.5g sliders, went to 8g) my max rpm dropped to around 7700-7800 and the top speed increased. takeoff suffered a bit but wasnt enough to matter. the hardest thing for me was getting over the faster rpms not equating to more speed, didnt sound as fast and can mess with your head. now with the 2 stroke it is a bit different, those things love high rpm and can handle it too, which im sure youre very aware. also those glixal ones performed way different than the dr pulley sliders of the same weight when i tested them, they dropped my top speed as well. scale showed they weighed right, so maybe the material or shape was the cause. would recommend spending the little bit extra and go for the dr pulleys if youre going the slider route. some variators seem to work better with sliders and some work better with rollers too. been curious on how sliders perform in that polini vari though so thanks.

[@davidhofinger4927]

I ended up dropping it down to 4.5 g rollers after this video and I shaved a second off of 0 to 2 0 to 40 Yeah kept the same 50 mph top speed so I ran with that And going to from here on out Little bit peppier down low and still holds the same top speed I don’t think I’m going to mess around with sliders again makes sense though I’m glad that happened with you to the motor was revving higher So I’m smiling yanking on the throttle ridin turns out it was a whole ass 7 mph slower lol

[@sonikfright1480]

it's on the carbonator? based on the slider's. i got mine up to 54 mph. take off great and the top end. but it was a 100cc upgrade

[@Lilogmffamily187]

I had a tao tao 50cc it was stock and wood do 50 easy and I Wade 240 at the time got me a venom 18x now trying to figure out what carburetor it head so I can put it on my venom 18x it only do 35 40 Max and it looks good it looks like a crotch rocket it needs to run like it do you now what size rollers a stock tao tao has

[@shaggybuddz4208]

What app are you using?

[@davidhofinger4927]

@@shaggybuddz4208 it’s called “GPS race timer” You can find it on the App Store. It is free and it is phenomenal as he seen in this video. You can even set what speed to stop measuring at to the decimal point. You can also set which footage or yardage to the exact point where you wanna stop. You can even set it from 20 miles to 32 mph and see how long it takes if you want Free and amazing Check it out

[@chickenderhun]

Hello, I also have a gy6 50cc with 47mm bbk, using 5g rollers, and im about to try the 5g sliders to see that will happen. What kind of contra spring do u use? Do u recommend stronger like +1000 rpm blue or +1500 rpm yellow spring?

[@davidhofinger4927]

1500 yellow contra and clutch springs with an NCY bell, Polini variator with 4.5g rollers. Try em out give ‘em a shot I’m not gonna say that they’re gonna work particularly well every bike as different as well. I hope you get positive results. I would recommend the yellow ones the red ones are a bit drastic, but my body ran the red clutch springs and it took off off line so I cannot say it is true for every bike. It’s all about testing and tuning

[@Abc-kn5wj]

How are the sliders on hills? Many people say that on hills the sliders the drop ribs quicker just as if you're heading into the wind so it's much more difficult on hills

[@AbduTaleb]

is sliders changed same as rounded rolls each for example 1500 km!?

[@rafaelcardona1927]

Great video Dave..what do you have in your scooter for contra and the 3 Lil springs currently.thanks

[@davidhofinger4927]

Both the contra and clutch springs are yellow 1500lb springs Polini variator 4.5g rollers Gates powerlink 669 18 30 Belt Ncy clutch bell 1500lb contra 1500lb clutch springs

[@chickenderhun]

@@davidhofinger4927 hey, arent these 4,5g rollers too light? Do you use bbk (47 mm) on your scooter?

[@davidhofinger4927]

@@chickenderhun nah 4.5’s are what’s in my bike and it’s the best possible weight in my variator Shoot I run 3.5’s in my two stroke but that’s a different machine 2 strokes LOVE rpm

[@chickenderhun]

@@davidhofinger4927 thanks bro. Do u use bbk (47mm?) ?

[@davidhofinger4927]

@@chickenderhun yup 80cc BBK A9 camshaft Sealed valve cover NGK plug .4 intake/exhaust valve lash 20mm Glixal carb 96 main fuel jet Cone air intake filter Air/fuel screw slightly lean Open aftermarket exhaust Welded steel silencer Polini variator 4.5g rollers Kevlar Gates powerlink 669 18 30 belt NCY clutch bell 1500lb contra spring 1500lb clutch spring 49/17 gears

[@ewaldstander766]

So sliders gives you more torque and rollers top end?

[@davidhofinger4927]

Pretty much yup That’s what I found

[@josephstephenson1479]

Hey bro quick lil question my i'm going to install a big bore kit 80ccon my bike finally what other part would you recommend getting with the cylinder kit to make sure it runs right

[@davidhofinger4927]

Everything that I gave away in this recent giveaway is what I would recommend and that is why I decided to buy all of those parts at once with the carburetor the fuel jets the intake filter the exhaust and a belt to make it run good as a whole

[@josephstephenson1479]

@@davidhofinger4927 alright if I got the belt and the cylinder kit just for right now would it still run okay or would I still need the jet kit because I have to get it all gradually I was just making sure it would still be okay with the bbk the belt and jet kit

[@davidhofinger4927]

@@josephstephenson1479 definitely need a jet kit Need more fuel with a bigger cyclinder. You can get away with using the stock carb just fine but you definitely need more fuel for that stock carb with the BBK. The belt won’t allow the skinny stock belt to slip around like it’ll want to with more power from the bigger piston

[@josephstephenson1479]

@@davidhofinger4927 okay thank youbro last question what size jet should I do

[@davidhofinger4927]

@@josephstephenson1479 All depends on your bike especially with your carburetor being stock I’m going to tell you from 85-96 And it goes up In increments of two, 85,87,89,91 et cetera

[@49684]

Hey there David, what app are you using to collect this data? 😊👊

[@davidhofinger4927]

It’s called “Race Timer” little blue icon with GPS on it in the App Store, it’s accurate sweet and free

[@49684]

@@davidhofinger4927Nice, thank you for answering my question. I realize how time consuming it can be. My wife and I want to visit Traverse City/Gaylord hopefully next year to visit family. I’ll reach out and see if you want to give us a moped tour of your town and eat lunch/dinner on our way up north David. 😊👊

[@davidhofinger4927]

@@49684 that would awesome, you’ve been around since day one and I would love to meet you and get out there on some bikes and cruise I live in a small town but there’s definitely some interesting spots if you know where to go and I have explored this place through and through

[@einhander7661]

I have a 2007 Yamaha Veno 125cc an put sliders in and my revs are low now along with my top speed dropped from 65mph to 50? Gets to 50 fast but it is like it hits the limit and Boggs, I did everything to it mod wise an checked everything atleast six times now and the new sliders suck!!!! 15mph drop with a 12 horsepower built motor😢 I cant wait to put the old ones back in to see.

[@davidhofinger4927]

Doesn’t hurt to experiment with different setups That’s what this is, testing and tuning, tuning and testing each individual modification one by on in the CVT to find the best recipe for the fastest time

[@bp-tuningaeroxlc-dd6474]

if it is you want something out of your video and you want to have the correct numbers etc., then it is important that you learn to turn your Sliders correctly, You have mounted your Sliders the wrong way, and because of this you will lose a lot of the right numbers that you need to compare with against the other normal reels. This means that the measurements you have made with the Sliders do not fit in the slightest and must be redone.... now make a video where they are turned correctly and then we will see again how your numbers are ​Find oplysninger

[@josephstephenson1479]

Makes me wonder if the sliders just don't work on built bikes cause I didn't have luck with them either ,and your logo should be the greasy peice sign at the end lol

[@davidhofinger4927]

That’s a good idea dude I really like that I’ve been thinking about a moniker of sort and I do ritualistically do that every single video huh lol I will keep that in mind thank you Joe It’s interesting because the RPMs were actually much higher and more RPM you have theoretically the faster you go but it did not perform that way performed way worse, I ended up putting 4.5 g rollers into this variator after that video today and it performs a whole second faster in every category, Looks like I’m a roller man for life

[@josephstephenson1479]

@@davidhofinger4927 I think it every time you do it lmao my son was watching too an did it back that's when I had to say sum ,,and I put 5.5g rollers in and it runs okay I just struggle with the weights I feel like it could run so much better

[@davidhofinger4927]

@@josephstephenson1479 5.5’s For me made the bike run worse both acceleration and top speed lighter seems to be the recipe or just stock 5’s That made me smile that’s really cool makes me so happy to hear things like that

[@josephstephenson1479]

An I gotta quick question when you first start your bike up in the morning or after sitting all night do you have to twist the throttle a bunch to get it going cause mine won't just start up first press of the button anymore

[@davidhofinger4927]

@@josephstephenson1479 nope, both of my bikes fire right up Unless it was chilly like 50° during the day then both of them have a hard time starting

[@jmikew417]

Maybe you need to go with some lighter sliders. You'll slow down the lower acceleration but probably gain in top speed.

[@davidhofinger4927]

It’s alright I ended up dropping it down to 4.5 rollers after this video and gained acceleration yet kept the same top speed so I’m happy with that Interesting experiment though

[@jmikew417]

@@davidhofinger4927 I went from the 5.5 to 5 sliders today. That got me back to around 42-43mph (I run out of road at that point) after I installed a CDI. That seems to be the happy spot on my Ruckus for now.

[@amyhazelvang7198]

What app is that my freind? ❤ the videos

[@davidhofinger4927]

I’m the App Store It’s simply called “Race Timer” It’s free & the icon is a blue stopwatch Thank you I really appreciate that

[@mariajeanelle7894]

What’s cc do you have

[@davidhofinger4927]

80cc really 72cc’s, 47mm bore piston Stock crank

[@lucabot5518]

​@@davidhofinger4927gy6??

[@justincase3565]

The sliders need to be heavier thsn the rollers to utilize their shape properly

[@georgemoran4077]

👍

[@JDWURKS]

You installed the slider s wrong I think lol

[@49684]

⭐️⭐️⭐️⭐️⭐️

[@justinbryce1888]

When you switch to sliders you have to go up a gram from what your rollers are

[@davidhofinger4927]

I might go back and revisit these, but I got much bigger build plans anyways for this bike 52mm domed piston top end BBK with a 44mm stroker crank SO I’m definitely going to have to re-tune my transmission and I might try sliders

[@juniorlloyd3192]

I was told to drop a gram for sliders

[@CorneliusLyngdoh]

Nice scooty bro

[@davidhofinger4927]

Thank you I appreciate that

[@ematise]

Good job man 👍

[@davidhofinger4927]

Thank you I appreciate that man

[@exgtt2061]

With sliders you run 1-2g less weight. Eg if you have 12g rollers you use 11g sliders. Comparing same weight isn’t fair as that ain’t how sliders work.

[@davidhofinger4927]

Good to know I might try it out again, but my motor was revving to the MOON with the 5g sliders I’d honestly be afraid to throw some 4g sliders in there to over rev my motor it was going RAAAAAAAAAAAAAW!!!!!!

[@exgtt2061]

@@davidhofinger4927 haha I get you, the characteristics of sliders is a DECREASE in revs towards the top speed 👍

[@seanmayo206]

Dude them tires are to small for 59mph for me anyway

[@davidhofinger4927]

There are two kinds of riders 1. Safety & efficiency 2. Speed & aesthetics I fall into the latter quite proudly lol

[@seanmayo206]

I try not to fall. Keep it on 2..............

[@seanmayo206]

I'ma upload a video of my wanna be Honda ruckus in the morning. I've done a couple things to it

[@davidhofinger4927]

@@seanmayo206 none of us try to fall lol But don’t let the possibility of the risk we all take every time ruin a good time brother Let it rip!

[@seanmayo206]

@@davidhofinger4927 good time? Ride a maddog 50 on shitty roads.

[@sigma_799]

who would have thought. engineers from the factory with years of experience creating road legal bilkes were right

[@davidhofinger4927]

Nerd

[@sigma_799]

@@davidhofinger4927 nerds are rich

[@testerhanter]

smegmasigma 🗿

[@dino599]

Good video to show how much hype is out their