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Post by D-cat on Jun 28, 2011 12:04:16 GMT -5
I vote for that Aprillia sr50. That little 2 stroke can haul you around very quick. Remember guys these 2t are a lot quicker than an average QMB. True but there's a big reliability gap between 2 stroke and 4 stroke. Water cooled helps but the very nature of 2T operation has it eating rings like candy. If it's just a round-town buzzer with some quick stretches, 2T is the way to go but if there isn't going to be a lot of time for maintenance, go with the 4. |
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Post by mzmoskito on Jun 28, 2011 17:04:01 GMT -5
C3...
Its simply math really. You will see gains in speed and power the more you mod your 50cc. It will come with trade offs such as lower MPH and possibly increased wear on your engine. Depending on ur weight your weight you can achieve 50+ mph on a level surface. I know a guy who has modded his 50 to get over 80 mph...he uses racing fuel and other things that boast that speed up.
If you put in a big bore kit, big performance head, exhaust, cdi, coil etc... expect to have a little powerful reliable little scooter that will keep up with traffic in town. but remember its a machine working hard and will always need constant care and maintenance.
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Post by bullet on Jun 28, 2011 18:31:29 GMT -5
In 1965, when I was 14 I had a Honda Cub. 50cc, 3 speed, auto clutch. Horsepower was 4.9 (claimed). Top speed was 47 mph. No engine mods, no sprocket mods, nothing, yet it did 47 mph on the flat. What gives with all the new stuff?
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Post by robb on Jun 28, 2011 23:13:07 GMT -5
In 1965, when I was 14 I had a Honda Cub. 50cc, 3 speed, auto clutch. Horsepower was 4.9 (claimed). Top speed was 47 mph. No engine mods, no sprocket mods, nothing, yet it did 47 mph on the flat. What gives with all the new stuff? You answered your own question. Gears and 4.9HP. Compared to 2.3 to 2.7 HP and parasitic drag from a cvt it's understandable that the average scooter is a bit slower. |
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Post by 50seesee on Jun 29, 2011 0:23:48 GMT -5
...It will come with trade offs such as lower MPH and possibly increased wear on your engine... I assume you mean MPG's? Not being a tool, just making sure you didn't mean speed. |
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Post by aaron420e on Jun 29, 2011 2:30:13 GMT -5
I have a 09 Keeway F-ACT Racing (with Stage6 Sport pro 70cc bbk) Don't know but I'm getting at top speed of 64mph so far, and i still need to tune the carb.  |
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Post by larry001964 on Jun 29, 2011 4:11:02 GMT -5
Larry, your sig says average speed. Does that mean your scooter can cruise comfortably at 40-45 with no problems sort or long term? Thats pretty much what Im looking for. Somthing that can cruise at those speeds for in town riding, but can also do 50 or 55 for a short distance on flats maybe once a week. Hi c3powil Yes I would say my scooter cruises at 40 to 45 pretty comfortably. I have hit 50 and 55 when the wind and hills are right. I don't like going that fast on it as it begins to wobble at 50, I'm sure the tires need balanced and I definitely need new motor mounts, I drove it all winter long and the road salt really tore up a lot that I'm still fixing. I have over 2000 miles on this BBk and so far so good, but I only upgraded to 72 what Honda designed this engine to be in the first place. I have no idea if the Chinese are using the same hardeners in the engine metal that Honda designed the engine to be so it's all a guess. I will say my Tack shows 7000 rpm at 40 and about 7200 at 45 so im right in the engines power band, and im not over reving it to get these speeds. I have to go to work they are trying to put in 40 hours in 4 days for a 4 day weekend so i need to go. I hope i have answered your question I wish you the best of luck. |
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Post by lbo on Jun 29, 2011 6:01:09 GMT -5
As mentioned a Super 9, with a 70cc kit, will hit 50-55 easily. The crankshaft in the stock engine is more then ample to handle the RPM's and additional power.
My AC Super 9 cruizes at 40-45 all day long and I ride at WOT most of the time. I use a good synthetic oil and have just over 14,000 KM on it so far with no problems. (Knocks on wood)
My second vote would be the Aprilla, if you can find one.
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c3powil
Big Dawg
Folow the Wolves
Posts: 19
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Post by c3powil on Jun 29, 2011 8:14:25 GMT -5
Aaron, you a dane cook fan? And I actually have a few f those bikes fr sale around here nd they seem like good deals.
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c3powil
Big Dawg
Folow the Wolves
Posts: 19
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Post by c3powil on Jul 1, 2011 17:54:46 GMT -5
Okay, guys. Im supposed to be picking up an Aprilia sr50 ditech tomorrow or sunday. It has a broken piston, but the engine turns over. I figure: "Im planning on increasing the bore size anyway, so I dont need the piston to begin with."
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Post by ♣Luke♣ on Jul 1, 2011 18:21:34 GMT -5
you need to rebore to the next size or purchase a new block...before you install make sure that the shaft is not bent...otherwise you'll keep on breaking new pistons..good luck!
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Post by wilson420 on Jul 1, 2011 18:38:14 GMT -5
You should get a 150 and remove incriminating decals, then if you get pulled over play dumb and just claim you were told it was a 50cc. I've been riding my 150 with no plate and have never been pulled. I was even missing a muffler for a week or so and had no cop problems.
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c3powil
Big Dawg
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Posts: 19
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Post by c3powil on Jul 1, 2011 19:41:01 GMT -5
Where can I find a good 70cc or 80cc liquid cooled big bore kit?
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Post by dude on Jul 1, 2011 20:52:48 GMT -5
Over the years they have used 3 diferent type of motors so make sure which one you have. Call Jeremy www.enviromoto.com/ |
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Post by mainepeace on Jul 1, 2011 21:04:55 GMT -5
You should get a 150 and remove incriminating decals, then if you get pulled over play dumb and just claim you were told it was a 50cc. Just because you haven't been caught yet doesn't mean you won't. You also shouldn't condone breaking the law on a public forum. Greg |
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c3powil
Big Dawg
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Posts: 19
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Post by c3powil on Jul 1, 2011 21:57:10 GMT -5
I have a question for you guys. since the piston is broken I have to replace it. Now I thought that I might as well just go ahead and increase the bore size to 70 while Im at it. Only problem is that the bore kits for this scooter are all so expensive. It it the fact that its a liquid cooled 2t? Whats the difference of a liquid and an air cooled kit? Maybe I should just buy a replacement piston and rings and just add a new exhaust and add sliders. Theres no messing with the carb on this thing...its fuel injected!
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Post by dude on Jul 1, 2011 22:05:24 GMT -5
You may have to remap the ECM with a BBC and you remap them with a Game Boy.
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c3powil
Big Dawg
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Posts: 19
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Post by c3powil on Jul 1, 2011 22:19:59 GMT -5
Pahahahahaha, wow... I can buy a gameboy at my local pawn shop. Where can I get the aprilia "game" for it? Also, so with a gameboy I can install any 70cc BBC that will fit and just remap the ECM instead of buying a new one?
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Post by dude on Jul 1, 2011 22:39:30 GMT -5
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Post by shotnva777 on Jul 2, 2011 9:35:49 GMT -5
My 50cc VIP did 43 consistently (GPS verified) with very few mods.... maybe i just had a abnormal scooter?
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Post by shotnva777 on Jul 2, 2011 9:37:09 GMT -5
*Oh... with the stock HEAD TOO
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Post by jimh on Jul 2, 2011 16:36:26 GMT -5
You should get a 150 and remove incriminating decals, then if you get pulled over play dumb and just claim you were told it was a 50cc. Just because you haven't been caught yet doesn't mean you won't. You also shouldn't condone breaking the law on a public forum. Greg Yeah, really! you don't think big brother reads these forums to educate themselves? Lawbreakers are their business. |
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Post by Bong on Jul 2, 2011 17:01:51 GMT -5
You may be interested in just buying a new 90cc crate engine. After that a BBK could go to 103cc on that Aprillia!!!! EFI is a lot harder to deal with than a standard carb. I would suggest a cheap laptop instead of the gameboy route. It can be done though. A new piston and a few other parts may have that bike running like a champ. Do your research!!!
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c3powil
Big Dawg
Folow the Wolves
Posts: 19
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Post by c3powil on Jul 3, 2011 1:32:46 GMT -5
I got the bike today and its just as the guy said. Broken piston, but the rods are all straight and in liine and nothing else seems to be out of order. Farings are ROUGH. Someone decided that they didnt want the racing aprilia stickers so they took a sander to the plasics and now theyre very..... not stickery anymore. But I think I made a good deal for 220 bucks.
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Post by gmoney on Jul 3, 2011 9:57:52 GMT -5
Just buy a late model Honda Metropolitan, they are 50cc, will do 42 mph all day long and they need no mods to do it. They are water cooled, quiet, and retain their value. I sold my Chinese scooter back in March, bought and 04 for $900, and bought a new 2009, (the last year they made them for the states), and they require miminum upkeep. I've put 440 miles on my new one and 460 miles on the 04, they both will do 42 all day long we me, 6'1" and 210 lbs. Oh, and they are 4 stroke!  Gary |
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Post by mzmoskito on Jul 6, 2011 10:13:40 GMT -5
shotnva...VIP's have 60cc engine stock, comes with a 44mm piston so yes they are abnormal. mine performs very good stock for my weight. i still need some mods though to take those hills and have some get away speed.
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Post by revweasel on Jul 8, 2011 9:56:44 GMT -5
The mid-size Buicks (I have owned three) with the 3800 V-6 and automatic overdrive will do it. And they are far easier to work on than my scoot! I completely disagree on the easier to work on part! Ive had a park ave. Only one... never again! But I'm curious why your dad thinks it is a good idea to get you a 2 wheeled vehicle that cant accelerate and cant be insured. In my opinion a better accelerating bike (not faster in the top end necessarily) with insurance would be a lot safer of a learning platform. Doing 50+ often on an unlicensed bike=tickets. I have a 15mpg family hauler. I got a 50cc since my typical trips are under 2 miles i was killing the van with wear and mileage sucks! Just get a cheap 50cc, put a BBK in adjust the weights and springs for your comfort and take the scenic route. You don't need to do 50mph. You just need to get there. I love hitting the side streets. They are lined with trees, not aggressive drivers trying to get from A to B as fast as possible. Pissed at the scooter slowing them down 5 MPH. I was doing 40 in a 45 and a woman passed me to slam on the brakes and exit the road to the left only 100 yards further. Staying behind me would have cost her only seconds. Safety First. Economy and Reliability Second. Speed... Not sure where that is on the list. My 2 cents, plus change. |
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Post by eldertripp on Jul 8, 2011 10:16:09 GMT -5
Just saw a 100cc kit for the 50 comes with piston, jug,head W/valves gaskets all for 79 bucks seems like a cool upgrade for the 50, John
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Post by smokiestover on Jul 9, 2011 1:33:13 GMT -5
The mid-size Buicks (I have owned three) with the 3800 V-6 and automatic overdrive will do it. And they are far easier to work on than my scoot! I completely disagree on the easier to work on part! Ive had a park ave. Only one... never again! My commuter vehicle is a 1989 Buick Electra Park Avenue. It has just under 260,000 miles on the odometer. I can change all 6 spark plugs in less than 1/2 hour....that's almost as quick as doing the same job on a 1977 GMC pick-up with a straight 6. It took 45 minutes to replace the radiator and both hoses. The last thing I fixed on it was the idler pulley for the serpentine belt...April 2010, cost about $20, time about 10 minutes. I replaced the water pump about 4 years ago and that took no more than 1-1/2 hours. Nothing else under the hood, except the belt and plug wires has ever been repaired or replaced; both the starter and alternator are original. Summer fuel economy, 80% 2 lane highway = 27+ mpg Example No. 2: 1994 Buick LeSabre, 238,000 miles. This one (unlike the 88 thru 90 3800's) has the 2 piece, plastic throttle body that is known for leaking coolant into the crankcase.....that was about a 4 hour repair job. Did replace the alternator on this one last year.....10 minutes to take it off and a little more to put it back. Plugs and wires, serpentine belt, hoses.....all easy as pie to replace just like the 89. Hell, it takes almost an hour just to remove the back tire on my scoot (every 4000 miles)...about the same time to remove all the crap it takes to adjust the valves and a bit more to put it back, and that's every stinkin 2500 miles! |
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