KymcoForum.com

Scooters - 125 to 300 => Agility 125 => Topic started by: Cortez on November 15, 2010, 08:46:05 PM

Title: New roller weights and belt..
Post by: Cortez on November 15, 2010, 08:46:05 PM
I've just came back from the workshop with new rollerweights (13g) and a new belt.
I bought original Kymco parts.

I'm a bit confused with the results of the roller swap. The scooter seems to accelerate
better, but also seems to start from lower revs and maintain the lower revs up to 60km/h
when revs start to climb more rapidly then with the stock setup. That, of course, doesn't
make a lot of sense.

Since there's no tach on it, all I can go by is sound, and at 50mph the revs SEEM TO BE
higher. I had just a short ride on it so I can't be sure. I'll make a video and try to compare
it with the stock setup to see if there's any measurable difference.. but so far it seems
that wind might make a bigger difference then going from 14 to 13g rollers.

I now even doubt that the stock rollers were 14g, I'm just not sure anymore.

Other then that, the scooter is now a fair bit smoother. Just before the repair shop visit
the revs would rise a lot more at first then come down at about 15-20km/h, and now they're
as steady as it gets.

The scooter has 11.500km on the odo (just over 7000 miles), and the wear on the rollers and
belt was apparent, but less then expected since it's only 500km untill the schelduled replacement
interval. I'm 100% sure both would have lasted in excess of 15.000km. Even the rollers wore out
rather evenly, which is a rare occurence.  

That'll have to do for now.
L8r!
Title: Re: New roller weights and belt..
Post by: oswaldters on November 15, 2010, 09:44:54 PM
I'm a bit confused with the results of the roller swap. The scooter seems to accelerate
better, but also seems to start from lower revs and maintain the lower revs up to 60km/h
when revs start to climb more rapidly then with the stock setup. That, of course, doesn't
make a lot of sense.


That would make sense if you had lighter rollers in to begin with and the 13gm weights are heavier than whatever you had (maybe 11gm?).

Heavier weights will give you a slower take off since they don't push out as quickly, but better acceleration once the speed of the bike picks up.  The lighter rollers will definitely give you more revs off the line, but weaker acceleration as the speed gets higher.



Title: Re: New roller weights and belt..
Post by: Cortez on November 16, 2010, 02:41:31 PM
It's a different story today..

Seems like the first few miles from the dealer to my home weren't a good example of
what was to come.

Today I've done about 15 miles and it's clear these weights are lighter, but I must say
the performance difference (subjectively) doesn't seem to follow the noise (rpm) difference
in a way you'd expect.

I've used to keep it at 50mph when going out of town since the bike felt the smoothest at
that speed/rpms, now it's more like 46-47mph for the same revs.

The flat spot between 25 and 37mph that was there before is now reduced to 25 to 30mph
and that takes only about a second and the revs start to pick up again resulting in better
acceleration through the entire 0-60mph range. The top speed seems to be the same.

I'm sure this will affect the fuel consumption more then it has affected the acceleration though.
Dr. Pulley 13g rollers might be a good idea too, but I'm happy with it as it is.. and I was happy
with it before to tell the truth..

If I sell my Kawasaki, I'll probably sell the Agility too and just get a bigger scooter and be done
with it (yeah, I know Axy..).
Title: Re: New roller weights and belt..
Post by: axy on November 16, 2010, 03:13:46 PM
It's a different story today..

Seems like the first few miles from the dealer to my home weren't a good example of
what was to come.

Today I've done about 15 miles and it's clear these weights are lighter, but I must say
the performance difference (subjectively) doesn't seem to follow the noise (rpm) difference
in a way you'd expect.

I've used to keep it at 50mph when going out of town since the bike felt the smoothest at
that speed/rpms, now it's more like 46-47mph for the same revs.

The flat spot between 25 and 37mph that was there before is now reduced to 25 to 30mph
and that takes only about a second and the revs start to pick up again resulting in better
acceleration through the entire 0-60mph range. The top speed seems to be the same.

I'm sure this will affect the fuel consumption more then it has affected the acceleration though.
Dr. Pulley 13g rollers might be a good idea too, but I'm happy with it as it is.. and I was happy
with it before to tell the truth..

If I sell my Kawasaki, I'll probably sell the Agility too and just get a bigger scooter and be done
with it (yeah, I know Axy..).

What about fuel consumption then? :)
Title: Re: New roller weights and belt..
Post by: Cortez on November 16, 2010, 03:32:40 PM
What about fuel consumption then? :)

I'll make a new thread on the forum specifically for bitching about that.
 :-*

Title: Re: New roller weights and belt..
Post by: marioG on November 16, 2010, 07:34:07 PM
fuel consumption are just the same as before...

i was running 11.5g with stiffer spring...came with malossi....

can really bitch about that, on full tank diff is like 5km....if u dont race it all the time...

its just like 50cc, screaming...painfully...change it to 13g....

with 11.5 too fast for me....
Title: Re: New roller weights and belt..
Post by: Cortez on November 16, 2010, 07:49:30 PM
I feel sorry for the engine even after going from 14 to 13, seems the revs have increased by a lot
more then I was expecting, but there's no doubt the scooter is faster up to about 50mph now, but
I think it's lost some of the power at the very top, takes somewhat longer from 55mph to 60mph now
(could be just the wind, can't really confirm this).
Title: Re: New roller weights and belt..
Post by: oswaldters on November 16, 2010, 11:32:17 PM
The lighter weights definitely changed the engine sound when I made the switch on my guilty 50- but without a tach I can't be sure how much higher the revs are.

And I would agree with the assessment that the sound generated by the lighter rollers isn't matched the increased fury of acceleration. 

I'm thinking that the lighter weights need to be paired with a performance variator to get maximum benefit.
Title: Re: New roller weights and belt..
Post by: axy on November 18, 2010, 08:35:31 AM
I`ve worked with Colin from scooterpartsmania to put in stock belt for A125 and here it is:

http://www.scooterpartsmania.com/belt-for-kymco-781x20-p-2944.html (http://www.scooterpartsmania.com/belt-for-kymco-781x20-p-2944.html)

Shipping worldwide free of charge.

OEM part is more than 2x that price.
Title: Re: New roller weights and belt..
Post by: axy on April 09, 2011, 01:45:19 PM
Yesterday changed weight rollers because in the past 50 kms the behavior of vario became highly erratic. It would skip and slide over roller weights, meaning they were worn out.

For the past two changes, 3x18x14 13g and 3x18x14 11g rollers were used.

The first such set lasted exactly 7000 kms, this one only 4000 kms.

Below are the pics of the "roller weights". Completely shredded.

Yesterday Dr. Pulley 18x14 13g sliders and teflon bushings were installed.
Did not drive it yet.

A125 has 24.000 kms now.
Title: Re: New roller weights and belt..
Post by: Cortez on April 09, 2011, 01:48:18 PM
That's exactly what I was looking at for the next replacement, the 13g Pulleys..
Waiting for a report!

BTW, my stock rollers were still more then usable at the 10.000km check-up, as
was the belt.
Title: Re: New roller weights and belt..
Post by: marioG on April 09, 2011, 05:06:25 PM
yeap,

heavier weight are shreded....

Think thats variator, also ramp are just crap...china

no grease to apply....coz there too much dust from belt, small ventilvar....
Title: Re: New roller weights and belt..
Post by: axy on April 09, 2011, 08:51:16 PM
That's exactly what I was looking at for the next replacement, the 13g Pulleys..
Waiting for a report!

BTW, my stock rollers were still more then usable at the 10.000km check-up, as
was the belt.

Stocks were almost like new at 13K when first replaced.
These are not stocks, and two different weights were mixed...
Title: Re: New roller weights and belt..
Post by: Cortez on April 09, 2011, 08:52:35 PM
Stocks were almost like new at 13K when first replaced.
These are not stocks, and two different weights were mixed...

Yeah, I've read that in your previous posts too.. but mine aren't stock either, and
at the last check were as-new again.. (replaced at 10kkm, checked just before
14kkm) and are 1g lighter.
Title: Re: New roller weights and belt..
Post by: 2010Iron883 on July 02, 2011, 06:56:27 PM
I've just came back from the workshop with new rollerweights (13g) and a new belt.
I bought original Kymco parts (too expensive..).

I'm a bit confused with the results of the roller swap. The scooter seems to accelerate
better, but also seems to start from lower revs and maintain the lower revs up to 60km/h
when revs start to climb more rapidly then with the stock setup. That, of course, doesn't
make a lot of sense.

Since there's no tach on it, all I can go by is sound, and at 50mph the revs SEEM TO BE
higher. I had just a short ride on it so I can't be sure. I'll make a video and try to compare
it with the stock setup to see if there's any measurable difference.. but so far it seems
that wind might make a bigger difference then going from 14 to 13g rollers.

I now even doubt that the stock rollers were 14g, I'm just not sure anymore.

Other then that, the scooter is now a fair bit smoother. Just before the repair shop visit
the revs would rise a lot more at first then come down at about 15-20km/h, and now they're
as steady as it gets.

The scooter has 11.500km on the odo (just over 7000 miles), and the wear on the rollers and
belt was apparent, but less then expected since it's only 500km untill the schelduled replacement
interval. I'm 100% sure both would have lasted in excess of 15.000km. Even the rollers wore out
rather evenly, which is a rare occurence. 

That'll have to do for now.
L8r!
I have a 2007 that i bought new aND IT  now has 16,500 k on it and never changed belts or rollers. Im thinking of doing it but im having no issues. I just want to do a little modifying since the warranty is long over. The only issue ive had is the clutch grab at take off.  I have had the belt chcked at 12,000 and the dealer said it did not need one yet!
Title: Re: New roller weights and belt..
Post by: 2010Iron883 on July 11, 2011, 11:16:51 AM
I put the 13g dr pulleys in mine and it seemed to gain all the way through. It takes off faster and there is a normal place where i check the bikes performance and i know what it did before the swap. My speedo is 4 off so when it says 70 i think im running about 66. Well this place i never get over 69 or 70 and u can feel the cdi restrictor slightly cutting the power. Well now on the same hill im hitting 78 to 80 mph. No i dont feel the restrictor eather. Not a tremendous diff but it did make a diff in mine.
Title: Re: New roller weights and belt..
Post by: 2010Iron883 on July 21, 2011, 02:35:24 PM
I need to change my belt but i went ahead and got the 13g dr pulleys and i gained take off and top speed. You know how there is certain places you know exactly what your scoot will do? Well on the one i have i usually ran 68 to 70 and i could feel the cdi rev limiter. No i can hit 75 to 80 mph. Now i hope these things last though. I put a tiny bit of graphite lube in the variator slider track. My tended to perform better the next day after the swap. I just wander if they breqak in or something? My issue now is performance loss due to belt being a little streched.
Title: Re: New roller weights and belt..
Post by: dBuster2009 on September 30, 2011, 04:00:07 PM
What roller weights???  13gr?  What is the vendor???  Scooterworks is showing only 14gr for the agility 125....  And those are 18 x 14...

When looking to replace the rollers what exactly do I need to look for? 

Or correct this noob and tell me where this information already is and I will go read.
Title: Re: New roller weights and belt..
Post by: Cortez on October 01, 2011, 04:54:34 PM
What roller weights???  13gr?  What is the vendor???  Scooterworks is showing only 14gr for the agility 125....  And those are 18 x 14...

When looking to replace the rollers what exactly do I need to look for? 


18x14 is all you need to know, and decide on the weight yourself.
Kymco makes 12,4, 13, 14 and probably a few more weights for 18x14 size.
Title: Re: New roller weights and belt..
Post by: dBuster2009 on October 01, 2011, 09:15:50 PM
18x14 is all you need to know, and decide on the weight yourself.
Kymco makes 12,4, 13, 14 and probably a few more weights for 18x14 size.

With that being said, what might have been the stock weights?  I read some where on this forum that stock was 13.5 is that confirmable for the Agility 125??
Title: Re: New roller weights and belt..
Post by: Cortez on October 02, 2011, 01:26:43 PM
With that being said, what might have been the stock weights?  I read some where on this forum that stock was 13.5 is that confirmable for the Agility 125??

Mine were 14g.
It's possible that there's different weights in there for different markets.

I'm not very happy with normal 13g rollers, unless you keep the speed up to about 45-50mph, everything above that and
the engine screams and the fuel economy went out the window.

I'd try the 13g pulleys next, and that's probably the best weight.
Title: Re: New roller weights and belt..
Post by: axy on October 02, 2011, 08:41:56 PM
Mine were 14g.
It's possible that there's different weights in there for different markets.

I'm not very happy with normal 13g rollers, unless you keep the speed up to about 45-50mph, everything above that and
the engine screams and the fuel economy went out the window

3.28 instead of 3.25 l/100 km?  ;D ;)
Title: Re: New roller weights and belt..
Post by: Cortez on October 02, 2011, 09:22:17 PM
3.28 instead of 3.25 l/100 km?  ;D ;)

3,5l at a constant 52-53mph now, it was up to about 3,0-3,1 before, and that's
a big difference in range when out of town with the 5l tank.

I actually had to carry extra fuel with me on a few rides that I didn't need before
(200-250km rides).

Town average went from 3,1-3,2 to 3,4 - not that big of a difference in numbers, but considering
a fill-up lasted 3 days before, and lasts 2 days now, it's again, a big difference in range and convenience.

I've put 17.000km on the bike since last spring, and that's a nice difference in fuel cost too.

I guess it's not that big of a difference up to about 40mph where the revs are almost the same
(slightly higher), but they rise rapidly after that, and with Dr Pulley sliders they'd remain lower
up to the top speed, and the difference in fuel economy would be maybe 0,1-0,2l/100km, and
not up to 0,5l..
Title: Re: New roller weights and belt..
Post by: axy on October 03, 2011, 07:26:39 AM
All that is inside margins of statistical error.
Title: Re: New roller weights and belt..
Post by: dBuster2009 on October 03, 2011, 12:58:37 PM
3.28 instead of 3.25 l/100 km?  ;D ;)

Call me ignorant but what unit of measure is being used??  Probably something better... 
Title: Re: New roller weights and belt..
Post by: Cortez on October 03, 2011, 07:37:29 PM
Call me ignorant but what unit of measure is being used??  Probably something better... 

l is liters, km is kilometers, you should be able to figure it out from there..

If you copy pasted the entire line in google, you would have your answer sooner.. and
a chart for converting to MPG.
Title: Re: New roller weights and belt..
Post by: Cortez on October 03, 2011, 07:38:20 PM
All that is inside margins of statistical error.

After 2 or 3 tanks, yes, but not after 20.000km.
Title: Re: New roller weights and belt..
Post by: axy on October 04, 2011, 08:08:51 AM
After 2 or 3 tanks, yes, but not after 20.000km.

Maybe jets are worn out after 20.000 km, or there is increased resistance of worn out bearings in wheels, or carb float does not function properly or... :)
Title: Re: New roller weights and belt..
Post by: Cortez on October 04, 2011, 03:27:30 PM
Maybe jets are worn out after 20.000 km, or there is increased resistance of worn out bearings in wheels, or carb float does not function properly or... :)

The change in fuel consumption was apparent from the first tank after the roller change.
The jets were checked and cleaned (and the rest of the carb) twice in 20.000km, and the float is as new.

Wheel bearings are a possibility, but only on the rear wheel, because front one was already checked once looking
for the source of some noise (it was the speedo cable).

It's like with some cars that can achieve it's top speed in 4th and 5th gear.. it will use more fuel doing it in 4th because
of more revs, NO exceptions, and that's what we have here. More revs at any given speed.

It's different with Dr Pulley weights because they change the overall gearing in 2 ways, depending on the speed,
not just 1, like the normal weights, which raise or lower the revs, and can't do both.