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Post by natehicks2012 on Jan 12, 2012 12:40:39 GMT -5
i have a 2007 stock 50cc roketa gy6 scooter that is my only transportation to work and only goes 35 max for 30 miles each day. The only thing wrong is my electronic choke isnt working, all i can do is kick start it and its a real pain in the ass, its not fast enough for me and i cant afford a bigger scooter! what can i do to get more power, speed and acceleration without installing a bbk? im shopping for a high performance carb, hopefully one that is a 22mm with bigger jets. What size jets can i put in it or should put in without overdoing it? and do i need and intake adapter with the bigger 22mm carb?, also looking at an aftermarket cdi box and coil and wire, aftermarket variator, aftermarket clutch and springs, aftermarket air filter, new battery and belt, i weigh 190 lbs and also need to know which size roller weights i need for best acceleration and most importantly top speed! i dont know if i get bigger wheels and tires if that will help with speed or not, i dont really want to buy an aftermarket exhaust unless its gonna help ALOT...so if anyone could please help me, tell me what parts i need and what i dont need so i dont waste my money on useless parts, and sizes and specs on evrything if possible, where to get the best parts and who to buy them from for reasonable prices. I would really appreciate anyone and everyones help and opinions on how i should go about this and what to do to beef up my GY6, im aiming for 55mph but i dont want to take anything apart on engine or get a bbk just yet. please help me ppl, txt me if u can cuz i dont have alot of internet access. 765-499-3716 thanks again!  |
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Post by dwkirch on Jan 12, 2012 12:48:23 GMT -5
You can't hit that without a BBK, and I don't even think you could even get to 55 with a BBK. There is no replacement for displacement. Since you don't like taking things apart that excludes variator mods/gearing mods as well so you aren't going to get much faster than 35-40mph. If you get a Free Flow air filter you should use around an 85 to 88 main jet. Exhausts are only really needed if you do a BBK which you don't want to, so don't get it, it would be a complete waste of money for what you want to do.
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Post by loganhes on Jan 12, 2012 12:51:52 GMT -5
In my opinion, it is going to be hard for you to reach 55 mph on a 50cc scoot without throwing alot of money into it and if you do alot of modifications you sometimes end up sacrificing dependability. What I think you should do is save the money that you would have used to make the modifications and sell the scoot as well. You should then be close to having enough money to buy a good used 150cc scoot that will be able to meet your speed needs.
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Post by natehicks2012 on Jan 12, 2012 14:00:44 GMT -5
thanks for the responses, so even if i cant hit 55 what should i get from the parts i listed and what size? i definately need a new carb so i have to figure the the best one i can find for the most performance so is a 22 mm good and do i need an intake adaptor? i just want the quickest and easiest way to get max speed out of my scooter...should i get the aftermarket cdi and coil?, should i look for a whole clutch assembly with different springs and what size springs i dont know if the tighter they are the better or if its the opposite. im 190 lbs what weight rollers should i use for descent acceleration and top speed? and last thing...iv heard theres a washer or a few little things i can just remove from my clutch assembly or carb adjusting...anything i can just remove or make adjustment to to help speed?
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Post by dwkirch on Jan 12, 2012 14:27:53 GMT -5
You do not need a bigger carb with a stock engine, it won't do you any good. The performance coil will not help with anything but it will make your scooter start easier and idle better. The performance CDI may or may not help you it is possible it could even decrease performance if it has to aggressive of a curve. You will have to experiment with rollers/sliders I use 7g sliders but you might go lighter. 7g sliders are like 8g rollers(which are stock), you might try 6g rollers. You can go with a Free Flow Filter and #88 main jet, which is what I have and it will give you a few more MPH top speed as well as a bit more power, but it means you have to readjust your carb.
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Post by terrilee on Jan 12, 2012 14:37:39 GMT -5
SO U WANNA CRUISE AT 55 MPH ??
WELL YOUR NOT GOING TO DO IT ON A 50CC
WELL U MAY, BUT SOON AFTER UR GONNA BLOW THE POOR 
LIL SUCKER UP.
SAY GOOD BYE TO YOUR SOOT FOR ME
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Post by natehicks2012 on Jan 12, 2012 15:57:58 GMT -5
where can i get a 88 main jet? i looked all over ebay and highest i found was 80...and for everyone who says i wont reach 55mph atleast please help me and give me hints and ideas of what i should do to my scooter and parts i should buy to reach top speed..hopefully 50 atleast...im open to all suggestions. also i see about ppl changing clutches and clutch springs, what difference does new springs on ur clutch make...how does it help?
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Post by burnsscoot on Jan 12, 2012 16:02:20 GMT -5
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Post by Globs on Jan 12, 2012 16:06:03 GMT -5
I reckon a 125cc will get you to 55mph.
Kymco, Sym, Yamaha, Honda etc all do good ones.
Go for it!!
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Post by imnts2 on Jan 12, 2012 16:23:29 GMT -5
I would not depend on 55MPH cruise with a 150. If course I am talking about a real 55MPM not a china meter. sorry.
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Post by loganhes on Jan 12, 2012 16:43:56 GMT -5
I would not depend on 55MPH cruise with a 150. If course I am talking about a real 55MPM not a china meter. sorry. my Kymco 150cc Super 8 can cruise at 55 mph with no problem and this is GPS verified. WOT is 62 MPH but I don't like to hold her there for long |
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Post by loganhes on Jan 12, 2012 16:46:16 GMT -5
Burnscoot, Who is slamming?...we are purely stating that a 50cc cannot be made to go 55 MPH and still be reliable....just friendly advice |
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Post by imarider on Jan 12, 2012 18:53:29 GMT -5
hi
not to be a smartass or anything but the easiest way to hit 50+ is to go get a vip scooter
most come with a 63cc kit and can hit 50 stock ( well all the ones i riden)
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Post by skuttadawg on Jan 13, 2012 0:50:34 GMT -5
Would cost alot to mod a 4T 50 to get that speed ( not China speedo but gps verified ) . My old 50 has weight limit of 225 and being 190 you will not get the speed of a small teen on it . Instead of putting a fortune in your scooter you can get a 2 cycle and put a 72 or 90cc BBK , with HP exhaust and reeds along with CVT tuning should easily hit 50 mph . Another easy solution is get a 150cc scooter , my Echarm can cruise 50 all day long and top out at 70mph thats when the ECU ebrakes me . A 50cc engine would have to work so hard and rev up so high that it will not last that long compared to a 150 thats not stressed .
Honestly to get more power you will have to get a BBK , larger jets and play around with dif rollers weights and once you find the right weight get slider weights . A larger carb will not make it go faster as you need a larger engine to create enough vacuum to justify a larger carb . Now if you do upgrade your scooter make sure to get premium tires
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Post by mainepeace on Jan 13, 2012 6:43:25 GMT -5
Unfortunately, even WITH a BBK you are NOT going to get to 55, unless you drop it off a 6 story building. I am being totally serious and am not trying to rain on your parade.
A 22mm carb will do NOTHING except give you headaches unless you have at least 80cc of displacement.
A free flowing exhaust will do nothing except make your scooter louder and slower, unless you do INTAKE modifications, including serious work on the heads, carb, and intake plenum.
The orange coil will not do much by itself. It will help if you have borderline ignition issues, but if your coil is working fine it will not "increase power" at all. It *may* help the scooter start easier, but that's about it. If it does help, it means the ignition has some other issue that needs to be addressed.
A new CDI will not do anything unless your current one is limited (most are not now) or there is an issue with it where it would need to be replaced anyway. If your CDI is limited, you can tell by it just losing power at a particular RPM (not just speed) and the power will return as soon as the RPM's go down a bit. Once you understand what's going on with the ignition it's easy to identify if your CDI is limited or not.
I have a 63cc with EFI and a lot of tuning, and I can hit 52-55 on a good day. I would NOT recommend riding at 50+ on a 50cc scooter for any period of time as it WILL eventually self-destruct. Also, the suspension is not setup for those speeds.
If you want more than the 32mph or so you're getting you will have to take things apart and get your hands dirty.
Most modifications, including a BBK, will only increase the acceleration, and NOT the top speed. The top speed is dependent more upon gearing (and the capacity to take advantage of the gearing) than anything else. Most 72cc and 83cc BBK scooters really only get up to about 40 mph top speed, regardless of what the speedometer reads. You can't go faster without getting the engine in the 10k rpm range, which will turn your engine into a paperweight REALLY QUICKLY unless it was built for that rpm range, which MOST scooter are not. Even Japanese built scooters typically are not designed for that rpm range.
Greg
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Post by natehicks2012 on Jan 13, 2012 16:18:27 GMT -5
i also have a very hard time getting my ped to start because the battery is junk (i have a new one on the way) so i have to kick start it and it seems nearly impossible to finally get it started by kicking it, and when i charge the battery the electric start still acts up....i can hear i start to turn the engine for about a half a second but then it just spins so do i have a bad starter or is it just that gear piece thats between the starter and the crank gear? i still cannot find a 88 main jet, just 85...and i would like to find a set of roller weights that has like 6, 7, and 8 gram weights all together so i wouldnt have to buy one set at a time and i wish i had a general idea of what size i should go with since im 190 lbs. and what is the difference between roller weights and sliders?
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Post by Pony66 on Jan 13, 2012 17:20:59 GMT -5
i also have a very hard time getting my ped to start because the battery is junk (i have a new one on the way) so i have to kick start it and it seems nearly impossible to finally get it started by kicking it, and when i charge the battery the electric start still acts up....i can hear i start to turn the engine for about a half a second but then it just spins so do i have a bad starter or is it just that gear piece thats between the starter and the crank gear? i still cannot find a 88 main jet, just 85...and i would like to find a set of roller weights that has like 6, 7, and 8 gram weights all together so i wouldnt have to buy one set at a time and i wish i had a general idea of what size i should go with since im 190 lbs. and what is the difference between roller weights and sliders? You might need to clean the Starter bendix and put a spot of grease in bearing in the CVT cover. You can get a jet set or singles from scrappydogscooters.com or www.partsforscooters.com/Welcome?search=50cc+jetYou need size 16mmx13mm. Sliders are not round like rollers. They serve the same purpose of pushing your variator out. The sliders are flat where they meet the back plate, so they have a larger area of contact vs round. They adveritse that they push the variator further, but they do last longer. You can get a set of 5g and 7g and mix 3 from each to get the equalivant of 6g. Here is a link for parts. from the banner on the top of this page. www.partsforscooters.com/Welcome?search=16x13 |
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Post by algears on Jan 13, 2012 17:43:22 GMT -5
Unfortunately, even WITH a BBK you are NOT going to get to 55, unless you drop it off a 6 story building. I am being totally serious and am not trying to rain on your parade. A 22mm carb will do NOTHING except give you headaches unless you have at least 80cc of displacement. A free flowing exhaust will do nothing except make your scooter louder and slower, unless you do INTAKE modifications, including serious work on the heads, carb, and intake plenum. The orange coil will not do much by itself. It will help if you have borderline ignition issues, but if your coil is working fine it will not "increase power" at all. It *may* help the scooter start easier, but that's about it. If it does help, it means the ignition has some other issue that needs to be addressed. A new CDI will not do anything unless your current one is limited (most are not now) or there is an issue with it where it would need to be replaced anyway. If your CDI is limited, you can tell by it just losing power at a particular RPM (not just speed) and the power will return as soon as the RPM's go down a bit. Once you understand what's going on with the ignition it's easy to identify if your CDI is limited or not. I have a 63cc with EFI and a lot of tuning, and I can hit 52-55 on a good day. I would NOT recommend riding at 50+ on a 50cc scooter for any period of time as it WILL eventually self-destruct. Also, the suspension is not setup for those speeds. If you want more than the 32mph or so you're getting you will have to take things apart and get your hands dirty. Most modifications, including a BBK, will only increase the acceleration, and NOT the top speed. The top speed is dependent more upon gearing (and the capacity to take advantage of the gearing) than anything else. Most 72cc and 83cc BBK scooters really only get up to about 40 mph top speed, regardless of what the speedometer reads. You can't go faster without getting the engine in the 10k rpm range, which will turn your engine into a paperweight REALLY QUICKLY unless it was built for that rpm range, which MOST scooter are not. Even Japanese built scooters typically are not designed for that rpm range. Greg Best advice I have read regarding the quest for speed with 50 cc! Accomplished by science, busted knuckles, sweat, loss of sleep, headaches, and possible alcohol, Greg has presented the facts very succinctly. There will be naysayers and there are exceptions, but I wouldn't argue against his presentation. Well said Greg! |
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