questions aabout mopeds

I am new to this moped thing and have some questions. Do mopeds only come in 50cc or are there bigger ones? About how fast can mopeds go? are mopeds heavier then a motor scooter? What is the price of a new and used moped? Is a two stroke or four stroke engine better? Which is more expensive? about how much horsepower and torque do most mopeds have? please excuse my ignorance.

Re: questions aabout mopeds

XBrandon EdgeX /

All the mopeds I've seen come 50cc stock, but you can buy cylinder kits to make them 60 or 70cc. The reason they're 50cc is because most laws regarding mopeds require them to be 50cc or less.

I've seen mopeds built to do 50 mph, maybe more.

Mopeds are lighter than most scooters, say one of those new Kymko scooters.

Price for a used ped: $25 (not running) to $800 (restored vintage or slightly used.)

Price for a new moped: $650 for a very basic moped. 1500 for a nice, relatively fast moped.

Two-stroke and four-stroke engines have their advantages and disadvantages. A two stroke builds more power per cubic inch (or centimeter) but isn't as fuel efficient (newer two stroke 50 cc engines still manage to produce 150 miles per gallon in some cases). Plus, older two stroke mopeds requre a pre-mix gas (gas and oil mixed) Most newer two stroke mopeds have an auto mix system, where you fill the main tank with gas and a smaller tank with two stroke oil and it automatically mixes in the carburator. Most mopeds are two stroke. I think the only four stroke mopeds were built by Indian back in the 70's.

Horsepower is between 1 and 2 usually, but I've heard of two stroke 50cc engines being modified to build 14 hp. Again, most laws require that mopeds be restricted to 2 hp or less. Torque, I'm not sure as far as foot-pounds go, but acceleration-wise, a one speed will accelerate slowly until you hit about 15 or 20, and a two speed or a variomatic moped has excellent acceleration.

But, one thing to keep in mind, moped laws are built around mopeds and mopeds are built around moped laws. Most states requre mopeds to be 50cc or less. Some states have other laws such as: must have working pedal system; must have no more than 2 hp; must go no faster than 30; must have fully automatic transmission. If a moped fits your states criteria, you usually get such advantages as cheap licensing and registerring (if even required) and cheap insurance (if requred.)

For example, in South dakota, If your moped is under 50cc, doesn't go faster than 30, has working pedal system, has headlight,brakelight,and taillight, and is 2 hp or less, you don't need license plates or stickers, registration, or insurance. All you need is a class A driver's license, which is just the basic car driver's licence.

Hope that helps.

Re: questions aabout mopeds

Here to ride a moped it's 15 y.o. with picture I.D. and no faster than 30.

Re: questions aabout mopeds

Brandon Edge is right on---the very first thing you should do is contact your State's DMV and find out what the rules are regarding mopeds. Here in Illinois, mopeds need to be licensed and titled, plus you must carry insurance. It can get a bit expensive to own one. But if you're lucky enough to live in a State that doesn't require all these regulations, it will be almost as cheap as owning a bicycle.

You'll find all sorts of information in this forum, and being a "newbie" myself, I've learned quite a bit about mopeds from all the knowledgeable and friendly Moped Army people. They're glad to help out, so don't be afraid to ask questions!

Re: questions aabout mopeds

Chris Robertson /

Good reply, Brandon!

As a minor point, Honda PC50s (made from 1968-1970) are four strokes.

Chris.

Re: questions aabout mopeds

hey i have a yamaha razz and im just wondering if anyone knows how to make them faster.. thanks alot

Re: questions aabout mopeds

hey i have a yamaha razz and im just wondering if anyone knows how to make them faster.. thanks alot

Allan

how do i make my yamaha razz faster

hey i have a yamaha razz and im just wondering if anyone knows how to make them faster.. thanks alot

Allan

Re: how do i make my yamaha razz faster

Steve Cleary /

heyI know how to make your razz faster. Between the cylinder and head there is a gasket (paper rubber or something) buy two brand new gaskets and get a 1/18 of an inch thick piece of sheet metal you can cut into the shape of the gasket. Put it in between the two new ones and put it back together. I heard this works but before you do it i would get a second opinion. I think it makes it 3 mph faster and is harder on the engine. well, talk to you later!....SteveAllan wrote:

>

> hey i have a yamaha razz and im just wondering if anyone

> knows how to make them faster.. thanks alot

>

>

> Allan

Re: questions aabout mopeds

hey i have a yamaha razz and im just wonderin if any one knows how to increase the speed by like 5-10 mph

thanks

Allan

Re: how to make a tomos targa lx faster

i have a tomos targa lx with a biturbo and a 27tooth front sprocket how do i make it faster with out a 60 or 70cc kit?

licensing in states

I'd be real grateful if someone could help me.

I have not got a license yet but live in Illinois where one is needed to drive a moped.

I need a moped for a few weeks and will be borrowing a friends

Could someone tell me a state where it is legal to drive a moped (less than 50cc I presume) without a license.

Can I regisiter the moped there at a mailing address or soemthing, insure it there and then ride it legally in Illinois.

Thank you in adavnce

Jools

Re: licensing in states

West Virginia and maybe Virginia.

diff between moped and scooter

TRYING TO GET AROUND TEXAS LAW THAT REALLY DOES NOT ADDRESS SCOOTERS, BUT DOES ADDRESS MOPEDS. IT SEEMS LIKE THEY LUMP THEM TOGETHER.

Re: how do i make my yamaha razz faster

I have a 1992 Yamaha Razz, I bought used a while back for $50. It didn't run so I cleaned all the carbon out of the exaust and tuned the carb and it runs great. it is very reliable.mine went about 28mph for a long time. until i got a new plug, octane boost, and a modified air filter.it now goes about 35mph or so. I might have someone make me an exaust unless i can break the restrictors out of the old one. another thing that will improve top speed is bigger tires (which i will also be getting soon). The razz comes with 2.5 by 10 tires. I'm going to get 3 or 3.5 by 10 tires. This is not serious performance stuff but it is all i can afford(i have no job and i'm 15)

Hope this helps,

Rick

Re: how do i make my yamaha razz faster

ItsLookingUp /

Ricky, the tire change you are planning will not make the scooter go faster. It will make it go slower. The difference in the two tires you write aboout is the "ballooning" or width. They are both 10 inch tall tires. The wider tire will create more road contact drag and slow the scooter down.

nuh-uh

Sorry... the tire being wider in profile also makes it taller.

Its the WHEEL that is 10 inches in diameter .. not the tire's OD.

His change WILL get a taller (and therefore taller gearing) tire.

His speed will go up as long a the motor has the HP to pull it.

(and it probably does)

One caveat ... tire manufacturers are not governed by any rules.. so one manufacturers 3.5 inch can be another manufact 3.0 inch.

But certainly the odds are he will have a taller tire if he makes that change.

Re: nuh-uh

david f martin /

I thought about using larger tires on my bike, and I asked VTcycles about it... They told me they didn't think a larger tire would FIT on my bike. I took a look at it, and I have to agree...

I run large tires on my VW bus, and it changed the speedo reading by at least 10 percent (it did help top end).

david

Re: nuh-uh

ItsLookingUp /

I stand corrected.

Re: how do i make my yamaha razz faster

aren't there taller tires for top speed?

Re: nuh-uh

[QUOTE]I run large tires on my VW bus, and it changed the speedo reading by at least 10 percent (it did help top end). [/QUOTE]

yea, it changed your speedometer reading but did it really change your top speed? the speedo in a car(not sure about the speedometer in a moped) is calibrated to the odometer. when you increase the tire circumference, the odometer thinks you are going farther then you really are, because you need less rotations of the tire. When the odometer is off, the speedometer is off too. Any top speed you are gaining but getting a higher profile tire will probably be offset by added weight. If you get a larger wheel, you will defiantly be slower because to added weight.

Re: nuh-uh

david f martin /

I put larger tires all the way around. At a comfortable rev, my speedo read the same, but I was doing about 10 percent faster on the highway. The larger rear tires added the top speed. The larger front tires made my speedo read low.

Putting larger tires on will slow down your acceleration, but will add to your top end.

david

Re: nuh-uh

david f martin /

I think you got your math backwards. A larger front tire will make your speedo and odo read low, as the tire covers more distance per revolution.

david

Re: nuh-uh

david f martin /

The speedo and odo count revolutions of the speedo cable. If you put a larger tire on the front, the tire will cover more distance per revolution, so the speedo and odo will read low.

The larger rear tire gives your machine higher gearing, so it won't take off as fast, but it will reach a higher top speed.

I don't know if this is a common practice on 2-wheelers, but VW bus pilots do it all the time.

david

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