KymcoForum.com
Scooters - 50cc => Agility 50 => Topic started by: Wil on May 06, 2011, 12:59:33 PM
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Hi,
My Agility 50 is de-restricted, and i've just replaced the rollers in the variator, yet if i have to slow down for, say, traffic ahead to around 20mph, and then accelerate again, it bogs down awfully, and if its up a hill, it slows down to embarrising speeds. Once it gets going though, its fine, and is fine at about 48 mph (indicated). Any ideas as to why it bogs down so badly? Also when i accelerate from a stand-still, it also bogs down, and engages 'top gear' alot earlier than it used to.
Help?? :(
Thanks,
Wil
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It sounds like your variator weights might be too heavy, or your torque driver spring may be weak. Either case will cause it to change "gear" too soon.
What weight rollers did you put in?
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These:
http://www.centralscooters.co.uk/naraku-variator-p-3806.html (http://www.centralscooters.co.uk/naraku-variator-p-3806.html)
Thanks
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I also think the same thing the rollers might be to big. or ----- Did you change the jet with a bigger one.
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i've not touched the carb settings, no.
where can i get rollers from then? giving optimum performance ofcourse ;)
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You can find loads of them on ebay. The best way to go is either buy cheap ones in various weights so you can decide which weight works best for you, before you spend money on expensive ones that might be the wrong weight for you. Or, you can buy a weight tuning set. The lighter weight will allow the engine to rev more before going up through the gears, heavier rollers will go up through the gears sooner, requiring more torque from the engine, these little engines don't have very much of that.
I am using dr. Pulley sliders, they are supposed to perform better and last longer.
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Did the bogging start with changing the rollers, or was it gradually happening beforehand? If the air filter is dirty and getting restricted, that will cause a rich mixture which will cause bogging. just a thought.
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OK, if you can get me a link to some ideal rollers, that would be great.
Also, how do you clean the air filter?
We had trouble with the back cone in the variator (whatever its called), it got stuck so we had to force it out again. Does that indicate a problem there?
Thanks,
Wil
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OK, if you can get me a link to some ideal rollers, that would be great.
Also, how do you clean the air filter?
Thanks,
Wil
Blow it out using air compressor.
I do not have it so I go "solvent" route: I use a small plastic dish, few dl of plan gasoline and a brush. I use the brush to apply gasoline to the filter and it melts away the dirt... just leave it in the sun/air do dry for 15 min before reinstalling and do not smoke while doing this...
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I just recently fitted one of these variators to my scoot( link below) after a full de-restrict, it really helps mine a lot. Much better acceleration to top speed of just past 80kmh down hill,75-80 on the flat (with no wind against me). Im running 5.5g rollers and an #82 main jet.
http://cgi.ebay.co.uk/RACE-VARIATOR-GY6-50-KYMCO-BAOTIAN-LIFAN-Chinese-/300540989339?pt=UK_Motorcycle_Parts&hash=item45f9a38f9b (http://cgi.ebay.co.uk/RACE-VARIATOR-GY6-50-KYMCO-BAOTIAN-LIFAN-Chinese-/300540989339?pt=UK_Motorcycle_Parts&hash=item45f9a38f9b)
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Cheers guys :)
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So if i was to get these:
http://cgi.ebay.co.uk/DR-PULLEY-SLIDING-ROLLERS-16x13-SYM-KYMCO-etc-9-5-/280651285226?pt=UK_Motorcycle_Parts&hash=item41581ec2ea#ht_4579wt_914 (http://cgi.ebay.co.uk/DR-PULLEY-SLIDING-ROLLERS-16x13-SYM-KYMCO-etc-9-5-/280651285226?pt=UK_Motorcycle_Parts&hash=item41581ec2ea#ht_4579wt_914)
with and 82 jet, and the race variator from before, what weight rollers should i get?
Cheers
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Of you scroll down the page on the link you posted it doesnt have the Agility listed under the kymco bit, so not sure if these will fit or work in an Agility?
I got rollers from same place and they advised me to use 7-8g cos said thats wot they found worked best. Standard is 6.5g. I ordered 7.5g rollers and tried them but ended up putting in 5.5g in the end cos I felt this worked out better.
You better just make sure they def fit an agility before u order them cos like I say, its not listed as suitable for an agility.
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I think I might replace the torque spring aswell. Is that inside the back variator, and is it easy to fit?
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Rode it to work and back tonight, and when i near stopped and put the throttle on, it stayed in high gear and went to really low revs. Does this mean a prob with the torque spring?
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*bump
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A good cleaning/inspection seems to be due... Eh, some ppl change the contra 1 time a yr. whether it needs it or not just to keep optimal performance
You sortof lost me on the stopping with throttle post.. Can you give a bit better details?
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Rode it to work and back tonight, and when i near stopped and put the throttle on, it stayed in high gear and went to really low revs. Does this mean a prob with the torque spring?
I mean, i slowed down and it stayed in the high gear, like the revs dropped loads. so it was esentially slowing down to 10mph in 5th gear, if you get me.
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To me it sounds like the part of the variator that was stuck before is still too sticky....
I experienced similar problems when the driven pulley of my variator didn't have enough grease in it.
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Personally i would remove the clutch and clean,regrease the tourqe driver. Sounds like that may be the issue.. That the t.d is sticking
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x2 what batman said. there is a good clutch cleaner out there not sure of the name of it but its silver and it works good I have used it a few times. it well help keep things lose and free of dirt.
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It's not the clutch that's the problem (although you need to remove the entire clutch to get to the insides of the torquedriver).
The torquedriver (=driven pulley) HAS to be greased inside, a cleaning product would only make things worse here.
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Ok, so i'll go into the tourque driver and grease it up.
It has been stuck before, so that probably is the problem. Someone with an impact wrench has previously un-done the clutch, so it should be easy to get too. Are there any pictures online of how to take apart the torque driver/put it back together?
Also, might a new torque spring work? and what revs/colour spring?
Thanks,
Wil
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Try to find the service manual, it's really useful and full of pictures and explanations... (I can't remember where I found it, but there are some links somewhere on this forum)
By the way, sometimes the torquedriver will come loose when you put some grease inside the unit without disassembling it completely. There are some holes that allow grease to flow from the area where the drive shaft is sticking through the unit, to the area where the two halves of the pulley slide across each other.
For this you only have to remove the nut that holds the clutch bell and slide the unit off the drive shaft, the grease goes where the drive shaft came from.. Make sure to use plenty of grease, if all seals are intact it won't come out and won't do any harm but it will find its way through the holes to the torquedriver by centrifugal (centripetal ?) force.
If this doesn't work there is some damage or incompatibility (cheap replacement parts used) that causes friction and you'll have to disassemble and clean the unit entirely to find the culprit... (oh, and make sure all parts are in there, especially the three "guide roller pins", they are very important)
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There is a "link to service manuals" thread in the general section, it might be burried under a half a dozen pages, but I think the A50 one is there.