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Post by digitalinsite on Feb 20, 2011 18:38:09 GMT -5
hey sean,
yep thats the one. My stock 50cc head had the spark plug hole dead center facing straight down. The new AD50 head that came with the 70BBK has it on an angle. I had to change spark plugs too. The one from the 50 was just touching the piston top and closing the gap. Good thing I noticed it before I smashed up the piston. I ended up going with a colder NGK B9HA plug cos I know i'm gonna thrash this little thing
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Post by digitalinsite on Feb 20, 2011 18:45:56 GMT -5
re: the 60km limit on mine. Seems better after a good long full throttle thrash. I'd say the rings are bedding in better now. I dont think it's the CDI now cos I got it nearly 70 downhill but still felt like it could rev a lot more. Didnt feel ike any sort of rev cut happening. Starting to think its the rollers and stock pipe
question about silders...
is it worth puttin sliders in if I'm still running the stock pipe?
I've read that sliders work much better than rollers in that you can run lighter sliders and get better acceleration but still get good or better top speed as the sliders still make it out to the edge of the variator because of their design. Can any one verify this?
Right now I'm running 42 grams total for rollers so 7grams. If I went to 6 gram sliders (36 grams total) would it run ok on the stock pipe? or would I expect to lose top speed?
My theory is that the 7 gram rollers are too heavy for my bike to get the revs up enough to get into any sort of decent powerband. Or is powerband a fantasy if you have the stock pipe?
thanks guys
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Post by buiditright on Feb 20, 2011 18:49:10 GMT -5
Digit, I cut and opened up my stock exhaust punch out the middle ans all that still did not help. Nothing we did helped untill we changed to the technigas.
I am not trying to tell you what to do and I know that money is really tight but safe your money until you can afford the Technigas. I think that if you get a cheap exhaust you will be unhappy. The Technigas is a quality exhaust and I know a guy who boughta NYC and it is crap.
Bill
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Post by digitalinsite on Feb 20, 2011 19:04:44 GMT -5
cool stuff - thanks bill
reckon it's worth trying some 6 gram sliders with my stock exhaust ?
-mark
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Post by buiditright on Feb 20, 2011 19:12:02 GMT -5
They should give you better then what you have now, Bill
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Post by digitalinsite on Feb 20, 2011 19:15:49 GMT -5
cool - will let ya know. saw em on ebay for bout $25 posted
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Post by jjjoseph on Feb 21, 2011 2:06:46 GMT -5
To be honest with the 72bbk it actually struggles to get to the same top speed as when it was a stock 50cc. Very strange. I'm sure it's got more power than the 50 tho. I'd say it gets about 62km/h on the flat and sorta hovers there like its being held back. These machines are limited by the belt width. If you're using the stock belt, your top speed will be the same as before. The belt has to ride higher on the front pulley in order to go faster. The only way to get it to ride higher is by using custom pulleys or a wider belt. Think about it: when the pulleys come together, they push the belt outward. If you didn't change the belt, it'll keep going out to the same place. Look for a wider belt such as a Malossi, which could be 2mm wider. That should take you to 80km/hr. Never mind the exhaust. Going to a tuned exhaust might get you 12,000 rpm, but it'll also blow up your engine before long! Try to keep it down to 8500rpm, if possible. One caveat: The wider belt will be really stiff and may make your machine hard to start since the wider belt is a lot of drag on that teeny 50cc starter motor.
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Post by digitalinsite on Feb 21, 2011 2:33:54 GMT -5
sweet - was considering a new belt - makes sense too. My last scoot had a kevlar belt in it and heaps more punch off the line probably due to the stiffer belt Im guessing. thanks for the tip
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Post by digitalinsite on Feb 21, 2011 2:41:24 GMT -5
can anyone here recommend a performance belt for the hyosung SF50 Rally?
I saw this one on scrappydogs...
Bando Performance 788-17-28 drive belt Bando is the best in Chinese belts with it's Aramid corded quality construction. These are nearly indestructable, last a long time, and reduce slipping frictional losses. Don't lose out at only $34.95
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Post by edfr on Feb 21, 2011 3:18:15 GMT -5
Guys you have it all wrong, a wider belt will NOT get you more top end. Reason is what gets you more speed is if the BELT can get to the LOWEST possible spot on the REAR CLUTCH PULLY. A wider belt will not go down as far as it should because the pulley will only open up so much. What you need is Heavier Weights in your Variator for Top End if that is what you want. Also if your Variator is Smaller in Diameter than your Front pulley then you can get a Performance Variator to match the Diameter of your front Pulley. By doing that you gain another 4-5mph if you can get the belt to climb another 1/4 of an inch. So mark your Variator like this and see how high your belt is climbing on your OEM Variator. What you are shooting for is for the Belt to CLimb about 1/8 or less from the Edge of the OEM Variator. Then if you put in a Performance Variator with a larger Diameter then you gain another 1/4 inch of travel for even more top end. Lefty Here is the difference from a OEM smaller Variator and a Performance Variator: Here is a Performance Variator that both front pulley and Variator are the same diameter about 1/4 more in diameter than stock.
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Post by thiess87 on Feb 21, 2011 7:58:45 GMT -5
All I've got to say is use scootercraft and search for Morini n hit enter u will find so much more and a bigger selection cuz scooter attack in Germany well scooter craft is there north american dealer I have yet to b let down yet u go on scooter attacks website get the part number emAil it to alex at scootercraft n he will have it here in a week no crappy Chinese parts the real scooter performance parts. And all u pay is item price and shipping to ur door. U can get polini stage six malossi motoforce str8 visual parts n much more. But with the Hyosung as we all kno the Suzuki address 50 motor matches up to it in some ways lol like my exhaust is a address 50 right now that's y my mounting bracket n all doesn't work so I made one. The Suzuki kantana also matches this scooter only with the exhaust but u have to cut the exhaust flange remount it to correct position. They do sell a no rev limited cdi for this scooter but they don't ship to the USA. The variator I have was off of scootercraft and its a malossi one n I must sayfor me the looks is pretty much is all it gave me didn't rly notice a change in speed. Weight wise u can remove the stand the rear fender the license plate holder what I did was take all wiring out of mine got my friend the black electric tape n taped it all together installed it n left it like that. One thing that us sf50 people don't have compared to ur rally is the front under the headlight the little fender nice looking but it is weight. The grill on the light is bout 2 pounds. The bottom panel under ur legs u can take off but it this is ur normal rider I wouldn't do it cuz of the wires n water but if u hide urs like me ur fine with it. When I acid dipped my frame n painted it to me it seemed alot lighter. I don't have any rear blinkers front ones r fine with me lol. If u got to lowes or home depot n u have a drill jus go n grab a circle dremel n take off ur intake manifold n bore it out a bit. Now what I'll b doin with mine as soon as I get mine running I'll b citing mine n repositioning it so it goes back over the wheel. I took off my goofy spoiler on the rear it's bout 3 pounds that it doesn't need lol
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Post by buiditright on Feb 21, 2011 8:43:47 GMT -5
Lefty, These scooters are different then most others out there. Mark, Lefty is right about the belt you do not need a wider belt and for the guy who says the exhaust will not help that is crap. Me SEAN AND JIM all habe these scoots and me and Jim have done a lot of tunning on them. We both have stock scoots cept for the exhaust, different main jets and sliders. When we changed our exhaust we gained almost 10 mph. Both of our scoots run almost 50mph and they are 50cc.
Yes I agree about thebelt but for three (3) years I have been looking for a better belt and have not found one yet that will fit. The only one we have found it the stock belt from Heeters. The varator I have not really looked for one yet so have no idea what is out there.
Me and Jim still run a stock belt.
Bill
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Post by jjjoseph on Feb 21, 2011 11:20:00 GMT -5
Guys you have it all wrong, a wider belt will NOT get you more top end. Reason is what gets you more speed is if the BELT can get to the LOWEST possible spot on the REAR CLUTCH PULLY. A wider belt will not go down as far as it should because the pulley will only open up so much. What you need is Heavier Weights in your Variator for Top End if that is what you want. Also if your Variator is Smaller in Diameter than your Front pulley then you can get a Performance Variator to match the Diameter of your front Pulley. By doing that you gain another 4-5mph if you can get the belt to climb another 1/4 of an inch. So mark your Variator like this and see how high your belt is climbing on your OEM Variator. What you are shooting for is for the Belt to CLimb about 1/8 or less from the Edge of the OEM Variator. Sorry! You'll still be a turtle if you're using the skinny stock belt. You can change all the weights and pulleys and still be stuck at 50km/hr. A racing belt will immediately get you 80km/hr. You don't need to mark the pulley face to see where the belt rides - it leaves a little line naturally all by its little self. But there's a downside: the racing belts are hard to start because of the extra drag.
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Post by buiditright on Feb 21, 2011 12:59:22 GMT -5
You are intitled to your opinion but there are two (2) UM XSpeed 50R scooters in Md that run a stock belt and they both run a strong 48 to 50 mph police radar checked and mainly stock 50cc. If you can find me a belt that size to fit this scoot good luck.
Bill
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Post by edfr on Feb 21, 2011 14:37:56 GMT -5
AHHHHHH, The young and the restless, a CVT is a CVT is a CVT, Like I always say you can lead a horse to water but you cannot make him drink. Ah yes the little mark that you will get after running for some time not after one. You want to be able to tell right away were the belt is reaching when testing. You can also do that to the Clutch pulley and see how far the belt is traveling down.
What is a racing belt anyways, is it shorter, is it stronger, is it wider, is it taller on the sides. From your comment, it will be harder to start it is shorter which means the belt has already opened the Clutch pulley and the belt is already riding a little down in your Clutch pulley. Lefty
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Post by thiess87 on Feb 21, 2011 16:38:53 GMT -5
lol i dont count cuz i dont have a stock belt
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Post by buiditright on Feb 21, 2011 16:43:12 GMT -5
So smart a_____ tell us you majic belt size. I would love to know so I can get one. If it is cheaper or same as my OEM I want to know. If it is 60 or 70 bucks then I will stay with my OEM but would love to know the number.
And Sean I have asked you that queston a bunch of times and you never said you had a off brand belt. I am coming to Towson.
LOL Bill
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Post by edfr on Feb 21, 2011 17:18:28 GMT -5
LOL.. since he says he cannot count maybe he has trouble reading as well, so maybe a picture and we can help him out. What do you say Builditright want to help him with this magic belt Lefty
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Post by jimh on Feb 21, 2011 18:43:21 GMT -5
Magic belts...if you can find them I'll try them. Bill, you ever hear so much malarkey?
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Post by buiditright on Feb 21, 2011 18:43:36 GMT -5
Hey Lefty you got that right. Man, I am not sure is it me or what LOL
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Post by edfr on Feb 21, 2011 20:28:21 GMT -5
Builditright, No it is not you, its just some people are very gullible and do not have the experience and believe most things they are told and or advertised. People will try and sell you anything by flat out lying about a product. A very common one on scoots are the TOP MPH they say the scoot will do, they leave out "ONLY" when a hurricane comes through Lefty
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Post by thiess87 on Feb 21, 2011 20:39:45 GMT -5
if ur talking bout me yea mine does 65mph when it was running currently rebuilding it to hopefully do more
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Post by edfr on Feb 21, 2011 21:01:08 GMT -5
Thiess87, That is great, and no offense meant but when people claim numbers we usually want to see prove of that. Like a Video with a GPS or something. I have a 150cc scoot weighs in at 350lbs and I weigh 180lbs and It runs at 80mph, see how easy it is. I will believe 65KM/H but not 65 U.S miles per hour unless you can prove it, and others I am sure do not believe it either. If I am wrong I will apologize , but like they say I AM FROM MISSOURI SHOW ME. Lefty
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Post by digitalinsite on Feb 22, 2011 0:53:55 GMT -5
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Post by edfr on Feb 22, 2011 0:57:43 GMT -5
HAHAHA!! Digit, Good one, know what they say if the shoe fits wear it Lefty
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Post by thiess87 on Feb 22, 2011 6:50:40 GMT -5
Thanks but no thanks let's c here Uve got a 150 there is ur first problem my scooter with filled oil n gas right n yes it does 121.63 lb I took it to a truckstop weight it n there u go me I'm not even 140lb, I have spent over 4500 in this scooter I have lost my family with this scooter Sean put ur money into somin useful my scooter was myfirat real feel on the road n now I have got to deal with well thiess87 people jus dont believe u well sry get ur ass here n put the piston In n tune it yet again n u can try it for yourself I've already been down this road with this board had comments months back thAt he video I posted I fast forward hell no u ask for it that's what ur getn sry if u don't like what ya c. Then when ur all done with that get ur self to the mva for a permit for the scooter cuz that's marylands new law get that cuz u had 8 tickets from this damn this n over 2000 in fines n 3 r from pa.
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Post by Panaramaguy on Feb 22, 2011 12:28:34 GMT -5
Was wandering around the 'net and I see there is a Dayco scooter belt (with a aramid core) that is 732 x 18.5 part number 7194. Could slightly longer and slightly wider do any good? For now I'll just stick with the stock belt and let someone else figure it out. OEM works fine for me. www.dayco.com.au/products.aspx?G=16002308&P=16028285
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Post by thiess87 on Feb 22, 2011 12:33:43 GMT -5
hey guy would this work on my motor?
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Post by Panaramaguy on Feb 22, 2011 12:38:19 GMT -5
Don't know if it would work. I'll let someone else give it a try before I spends my money. I'm thinkin' that the width would give a little more top end and hurt some botten end. The length.......the added length might act like a stretched worn belt....or not.
Donno.......anyone want to try?
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Post by thiess87 on Feb 22, 2011 12:40:34 GMT -5
i would but u cant buy it from them
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