ok just want to know.

[woodcutter]

I learned a lot on this forum and it's ok to share experience with others here

I'm going to use 3 x 5.0 - 3 x 6.0 g rollers from now on.
it is the best for me as it keeps revs in a range where max power is developed
 

[streido]

Does it really make a difference using 3x 5g + 3x 6g instead of just using 6x 5.5g rollers? Woodcutter?

I was about to order a set of 5.5g sliders but may wait and try a slightly longer belt if I can find one 1st. I fitted a new Nakura belt a few weeks ago but im not happy with it, think I need one with more of an angle to the sides, this one feels a bit rough on my variator at times.

[woodcutter]

3 + 3 gave me 3-4 mph better top, although there's no much open road where I can use it. everything else is like 6 x 5.5 and I'm thinking of ordering 5.5 sliders too. in my case 5.5 gr are perfect in any combination.

for the belt:

http://www.powersportparts.net/GATES-SCOOTER-BELT-STD-PL20507-p/68-20507.htm

agility is not listed but it uses the same as vitality or people 50. it seems I'm using standard belt. 748 mm is the right dimension. This is outer edge length but some manufacturers do measuring through the middle or 1-2 mm under the edge. I found out that bando 729 mm is in fact 740 mm in outer edge. wrap a thin rope around your belt and measure it. That will tell you dimension. up to 748 is ok.
and when you install new one, drive slowly for the first 4-5 miles and gradualy push it up. belt needs break in period also 
 

[streido]

Yeah, I measured mine when I ordered my new Nakura belt, I got 729mm long round the outside of the stock belt. I did notice my Nakura belt was maybe 1-2mm wider tho than my old belt, Nakura was 30mm wide but my old belt was about 28mm, I thought my old belt had just worn he 2mm away. Now I seethe link you posted lists the people belt as 28mm wide I think maybe my new belt is too wide at 30mm?

It runs ok, but feels a bit "bumpy" when starting off, like the variator is spinning off the raised bits inside the belt. I also feel like I lost a little top end too, so now think maybe that 2mm wider is stopping it going all the way into the bottom of the rear pulley? Do you think 1-2mm wider would make that much difference?

Think I will look for a belt later tonite online at 28mm wide and try that. Im in the UK so will see if I can find one here online. And maybe just order 5g rollers too, I got 6g ones already so I can use 3+3 of 5g & 6g to try it out. Ta. Let you know how it goes once I get the parts.

[baddi]

That rollers-thing sounds extremely odd for me..  6g rollers was the best for me, and when i tried 5.5g, my accelleration increased by 50%(took 17 seconds to a speed where it used to take 11 seconds.) And my top speed dropped 20 km/h. I blame this to the lack of momentum, as i could hear that the engine was taking many more rpm's to get to the same result as 6g. 

But do you guys think that it could be because that i use the white spring that came with the malossi multivar? Is that spring just too tight?

you guys mentioned body weight, so just for the statistics, im around 60 kg

[streido]

I found 5.5g works best for me out of all I have tried (tried 5.5g, 5.75g, 6g, 6.5g, 7g, 7.5g), not tried any lighter but at one point I was going to try 4.5g. I also use a torque 1000rpm spring and race variator, not a mutivar tho, just a cheap chinese clone. I weigh a little more than you, around 70-75kg.

With the 7.5g I got to 48-50mph on flats, but acceleration is too slow for me on anything over 5.5g and is terrible on hills. I get about 45-48mph on the speedo using 5.5g and better acceleration and uphill speed.

Even tried a 1500rpm spring which was a lot better uphill but I lost some top end so went back to 1000rpm. 2000rpm and I died on hills even tried with lighter and with heavier weights but didnt work.

Maybe check your belt isnt too worn and check your clutch too isnt worn are has loose fly springs?

From reading previous posts since I joined 5.5g with a 1000rpm torque spring seems to give the best performance overall on an agility, it def the most used set up anyway. Tho some I read used 4.5g, the legendary wordslinger I think tried them.

[woodcutter]

streido, 28 or 30mm is a way too wide for agility. 18mm is ag width. no wonder the belt is making your variator acting like you described.
a friend of mine bought vicma/dynaflex belt for his agility and I installed it so it's the 100% sure fit. got 5.000 km with no problems :

http://www.adrenalin-pedstop.co.uk/p/Dynaflex_OE_scooter_drive_belt_for_Kymco_Agility_50_Super_9_etc-2411.aspx

if you buy it, make sure product code CT48

[sidthesloth]

isn't 28mm too wide a belt? Shouldn't it be 18mm?

[sidthesloth]

Confusing the 30 degree angle for the width in mm?

[baddi]

I dont think that the problem is in the clutch, because its not that kind of problem, its more like when the roller weight is wrong, because 5.5g has lower inertia, and i can feel that it starts upgearing the first little bit at low rpms, but then it has to work verry hard to get higher.  And no, my belt is all new, changed it around 500 km ago :p

[streido]

Maybe im confused, wont be the 1st time 

It could be it was 18mm, will double check it tomorrow on my old stock belt. I know for sure the Nakura belt was 1-2mm wider than my stock belt cos I compared them when I swapped them over. Will remeasure my stock belt and order another the exact same width. The one on pedstop does'nt list the dimensions, or I cant see it, is for an agility tho it says. Maybe phone them tomorrow and ask the width. Thanks for the link.

[baddi]

If youve driven with your stock belt for like 10.000 km, it will be 1-2 mm thinner. And they are usually 30 degrees on the sides (at least the belt i got for my agility was )

[woodcutter]

the one at pedstop for ag, CT48 is 740x18x9

[woodcutter]

and a 1-2 mm thinner belt makes a difference. believe me 

now one maybe stupid question: rollers are not the same on both sides. one side seems a little bit longer and 45 degree and other one is in 'L' profile at 90 deg.  Now, what side to place against variator rotation? I tryed either way and noticed no diference. Is there are any rule for roll placing?

[streido]

Well if thats the size then its different from mine? My belt is listed at Scooter Assassins as 729x18x30? That belt sits fine at the top end of the rear pulley, I assumed the 30 was 30mm wide? And the 18 was 18mm deep? Sure its not 30mm deep?

 I think the angle is giving me problems cos the new Nakura belt is flat on the end, not angled, so this is not sitting on my variator as it should. When it hits the belt it must be hitting the inside due to it not being angled, will find an angled belt and get it ordered tomorrow. Wantto measure exactly on my old stock belt 1st o be 100% sure I get what I want.

Sure you fit the thicker end towards the front edge of the variator as it spins, if you know what I mean, the angled side?

The front will wear quicker cos it hits the edge of the ramp plate guide as the variator spins.