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Messages - Kieren

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1
General Discussion / Buggered helmet
« on: November 23, 2009, 11:20:19 PM »
Today i checked over my helmet and the front interior polystyrene padding (which i assume takes the blow if you crash) has a crack on either side going down from where the holes are for the straps.

Think there is much chance of HJC doing a replacement for this?
Or do you think its safe to use?

I personally think it should be fine, in the event of an accident it looks like these would probably break like they have done anyway and there not going anywhere to avoid absorbing a blow.

Having to shell out another £180 for a new helmet would suck...

2
Technical | How To / Re: Clutch turn to wheel turn ratio
« on: November 22, 2009, 08:25:58 PM »
Yeah mine does seem pretty high  :-\

I've got an old Baotian engine (think its pretty much the same) will check the gears on my Kymco against the old Baotian ones to see if they'll fit.

Only ones i can see to buy are a 10% Gear up kit but are only recommend for 125cc's

EDIT:
Just an after thought, what size wheels does your bike have?
Mine has 14" which may affect gear ratios etc

3
Technical | How To / Clutch turn to wheel turn ratio
« on: November 22, 2009, 04:07:18 PM »
My 6 month old Kymco Super 8 50cc doesn't go over 30mph (de-restricted EVERYTHING).

It takes 19 and a bit turns of the clutch for one full revolution of the wheel.
Is this right?
Any ideas on how to reduce this number?

4
Super 8 / Re: Struggling for 40mph?
« on: November 20, 2009, 04:57:07 PM »
19:1 !!!!
19 turns of the clutch for one full wheel revolution!

No wonder it only does 30, the engine must be working over time  :o


New gears me thinks?

Couldnt try the other exhaust because it wouldn't fit  >:(

5
Super 8 / Re: Struggling for 40mph?
« on: November 19, 2009, 07:00:01 PM »
I would assume it came from the UK seems as thats where i bought it and am riding it, somewhere up north if that helps (Haven't got log book yet)
Not going to start customising extra stuff like clutch springs etc yet though seems as it should be doing 45mph stock al be it de restricted.
I know roller waits will make lower end suffer but it pulls bloody well as it is so should pull well still with heaviers, it feels like its somehow restricted still seems as it stops at around 30mph at what sounds like full rpm (got over take by a 50cc that was still restricted down hill today!)
Mechanic my dad spoke to today also said about gear setups i.e its either got the wrong gears from stock due to a balls up in the factory or some tit has changed them to try and derestrict.
He also said he only does all the stuff we've already done when he de restricts them and they do 45mph easy.

If everything i try doesnt work i think Kymco SHOULD replace it / fix it as it should do 45 and is still in warranty.

6
Super 8 / Re: Struggling for 40mph?
« on: November 19, 2009, 05:48:36 PM »
Tomorrows plan of action:
-Try a different exhaust
-Try different rollers
-See how many clutch turns for a full wheel revolution
-Try 7g rollers
-All above fail, re-solder one wire on CDI

If its the exhaust then the replacement should be a performance exhaust me thinks  8)

7
Super 8 / Re: Struggling for 40mph?
« on: November 18, 2009, 04:39:19 PM »
I'll give it a blast Friday then (day off), just borrow someone elses soldering iron and solder then take it for a whizz.

What have i got to lose?
I'll also try only 6g rollers and.. well if that is no help Kymco i shall phone!
They never seem to respond to emails so maybe they are better with phone calls...

8
Super 8 / Re: Struggling for 40mph?
« on: November 17, 2009, 11:13:57 PM »
Quote from: zombie on November 17, 2009, 07:29:31 PM
Now I'm not SURE about this but the de-restriction on the cdi is supposed to be cutting ONE of those wires (purp/r). I have never looked into exactly what the circuit is so I don't know what cutting both will do. To be on the safe side I would use a butt connector to put 1 back. Good luck w/ the dealer/ mechanic! Please let us know how you make out...

This was one of the things i was thinking, I'll re-solder one if no difference try the other.
If everything fails i think i'll just re-restrict it...

9
Super 8 / Re: Struggling for 40mph?
« on: November 17, 2009, 06:27:49 PM »
Went to my local dealer today but the mechanic wasnt there.
The other guys tried to help me out but didnt have any ideas either!
They are supposed to be getting the mechanic to phone me back, if not il arrange to get them to look at it friday (hopefully under warranty so no cost?)

I took the little restriction out of the air filter today but still no luck!
I ran it on the stand and gave it full throttle it when to what seemed like full rpm then died down a bit then came back again :S
I think this was just because it was cold but who knows!
Hopefully they'll look at it Friday

10
Super 8 / Re: Struggling for 40mph?
« on: November 16, 2009, 08:04:52 PM »
Quote from: zombie on November 15, 2009, 11:17:51 PM
If you go back to the dealer, perhaps you could "persuade" them to install the springs, and new rollers/ sliders for you. A good shop can do the whole thing in about an hour. If you explain your driving route, and "how unhappy you are" they may just help you out a little! You mentioned your rollers are getting flat already! Even though the stock rollers are not very good, they should not be wearing soo quick. If you go ahead, and set it up correctly, the difference will be worth it. Keep posting so we can see the outcome!

I didn't buy it from a dealer, might be able to get a Kymco dealer who does warranty work to have a look at it though?

11
Super 8 / Re: Struggling for 40mph?
« on: November 15, 2009, 06:56:20 PM »
According to my dad when we had the exhaust off (to get the wheel off to get a new tyre fitted) he checked and there was no kind of restriction in the end of the exhaust.
Also i was running it before with just the 4.5g rollers and then only really made around 30 (not much higher). May well try just the original rollers but then may not make it as well up a long hill i have to go up once a week.
If all else fails it's still under warranty so there must be something wrong with it if it doesn't go much above 30 with the original rollers.

12
Super 8 / Re: Struggling for 40mph?
« on: November 15, 2009, 05:18:37 PM »
Quote from: zombie on November 15, 2009, 04:18:38 PM
You should be getting better speed! The first obvious trouble is the rollers. They must all be the same weight for long term stability. The heavier (stock) rollers will be doing all the work, while the lighter ones will float. It seems 5.5 gram rollers work the best w/ the 4t engine. you will have a total of 33 grams. Also changing the clutch fly weights will give back the low end torque. You will want to install a heavier set of these, (stiffer). Being a new scoot I believe your trouble is in the set up of the cvt more so than any other cause. Have you also changed the main friction spring in the clutch? This will also give a smoother overall feel to your scoot. Also pull off your muffler, and take a look into the manifold end of it. You are looking for a 1/2 moon re-stricter that must be filed/ dremeled out. I may have missed something but these are the basics.

So basically go back to the standard rollers, i may have to buy new ones as they all seem to have flat spots (if anyone could let me know if this is good, bad, normal or what causes it i would really appreciate it!)
Change the clutch springs? I think that's what you mean? If so something like these 'http://www.centralscooters.co.uk/product_info.php?cPath=514_657_677_497_626&products_id=3820' ?
Then get one of these? 'http://www.centralscooters.co.uk/product_info.php?cPath=514_657_677_497_626&products_id=3832'
Check the exhaust and for the cvt i assume that all falls under the rollers and clutch springs?

Thanks for your help, i know im asking a lot of questions  :D

13
Super 8 / Struggling for 40mph?
« on: November 15, 2009, 03:47:05 PM »
I've had my 6 month old Kymco Super 8 50cc 4stroke a few weeks and have since fully de restricted it.
I've changed the boss for a de-restricted one, put a size 84 jet in the carb, cut the 2 purple (with red highlights) wires on the CDI and swapped 3 of the rollers (was told this was ok by a bike mechanic) for 4.5g rollers and kept the 3 originals (in an attempt to get good pull on hills and still have a decent top end).

But the bike goes above 30mph but then struggles to get into the high 30s.

Is there something im missing here?
I don't expect super speeds out of a little 50cc but my last scooter (unreliable thought it was) made 40mph (45 if you really pushed it) so for a higher quality and higher priced scooter i would like it to do 40 easy.

Thanks in advance for any help...

EDIT:
According to another website I've found i need to remove a restriction in the air box and there is a restriction underneath the carb / on top of the inlet manifold

14
Super 8 / Re: Exhaust end cover
« on: November 08, 2009, 02:07:39 PM »
Thanks for your help, the only one i can find is listed as for a Agility 125 so have emailed Kymco to see if they can tell me if it is the same part.

15
Super 8 / Exhaust end cover
« on: November 07, 2009, 09:27:40 PM »
Hello there!

Just this Friday I got my hands on a Yellow / Blue 50cc Super 8 with a few marks here and there but have also noticed that the 'end' of the exhaust is missing.

Looking at others they have a round cover over the end of the exhaust but looking at mine theres just a 'bracket' with three holes for bolts.
Any ideas where i can get a replacement one of these?
Or even what it's actually called?

Thanks in advance for any help!

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