Motofrakcija

Spravočnikas žaliems:

125CC-200CC TWO STROKE: THE SCREAMERS
The good
These little rockets are super lightweight, easy to flick around, and if you get stuck on the track you can just pick the bike up and carry it. They're also easy to work on.

The bad
Because of their smaller engine sizes, these bikes are best suited to lighter riders up to 75kg. They also require skill to keep the engine in the power-band for they produce most of their power at high revs, although it should be noted that a 200 has considerable more torque than a 125.

The Ugly
The 125 and 200cc enduro bikes are almost exstinct for some reason, so you might have a hard time finding one. The small motors on these bikes also work hard so expect to invest some money in regular top-end rebuilds.

250-400CC TRAIL, FOUR-STROKE: THE SOFTIES
The good
Low maintenance, soft power and basic engineering means you don't have to be a dirt bike guru to own one of these.

The bad
Trail bikes don't get all the hot stuff the competition dirt bikes get, and as your riding improves you'll get frustrated with their low level of performance.

The ugly
The truth is, these bikes are heavy, slow and under-suspended. Even Chad Reed would have trouble cutting a fast lap on one.

250 COMPETITION FOUR STROKE: SMOOTHER THAN BUTTER.
The good
These bikes are so easy to ride, they chug, lug, pull and rev. Amazing! An excellent bike to learn to go fast on.

The bad
They pump out serious ponies for their size and need a high maintenance schedule to keep 'em going. Clean the filter, change the oil, check the valves and replace the top end regularly. That's the price for all that performance.

The ugly
These things rev high, around 13,000rpm, and if you think they'll last forever like an XR600, you're wrong. And if they go bang, you're in deep doo-doo.

250CC-300CC TWO STROKE: THE 'BRAAAP' CLASS.
The good
Lightweight, instant power. You jump tall buildings in a single bound and they're easy to work on as well. An ideal bike for a young, fit rider.

The bad
Unless you have good riding skills you'll find that all that instant power can be intimidating. These things are fast

The ugly
In dry, slippery conditions these bikes want to go sideways as much as they want to go forward. A new rear tyre and a steady throttle hand are essential to keep a two-stroke hooked up in the slippery stuff.

450 500CC COMPETITION, FOUR-STROKE: MORE POPULAR THAN FREE BEER.
The good
Everything is nice about riding a 'four five oh'. The power's smooth and there's lots of it. They'll hook up on greased glass and in dry conditions they'll turn inside the best two-stroke ever made.

The bad
As light as they are, they're still heavier than a comparable two-stroke and that can be a disadvantage in certain conditions, like deep ruts. You also need to apply plenty of new-school, four stroke maintenance to these bikes - just like the 250Fs, only not as often.

The ugly
Although a 450 should last a season without a rebuild, you know the time will come soon enough for a top-end job and this can be a problem if you've never worked on a four-stroke. The ugliest point though is if you blow one up; selling the house, wife and car should cover costs.

360-500CC TWO STROKE: ALMOST EXTINCT, THANKFULLY.
The good
Midsize, Open class, two-strokes like a 380 are a pretty decent bike in the hands of an experienced rider, since they're reasonably manageable, but a fullhouse 500 is at its best climbing sand dunes or setting land speed records.

The bad
These bikes can vibrate excessively, and at times the jetting can be difficult to sort. It can also be hard to find one because very few manufacturers make them anymore.

The ugly
As we said, midsize two strokes are okay if you can handle them but a full size 500 is ridiculously powerful. If you can ride one of these beasts fast, give us a call and we'll get you a factory ride.

600CC AND BIGGER FOUR STROKES: CRUISEMOBILES.
The good
These bikes usually have excellent on-road performance and if that's important to you then you'll find it in a big four-stroke. Their engines are also old-school four- strokes and that means that they should last forever and a day with regular maintenance.

The bad
Big four-strokes are usually designed as dual purpose machines and their size and weight often make them an awkward proposition in the bush.

The ugly
If you do go bush on one of these you may never be seen again as they're big and heavy and not too manoeuvrable in rough going. These bikes are at their best on fire trails and fast gravel roads.

The Straight Dope: Which Handles Better, A Two-Smoke or a Thumper?

Believe it or not, there is more than one way around a track.

There was a time when the only people who rode four-strokes were grizzled old prospectors tooling around the Southwestern desert (And some guy named Scott Summers) No more! The four-stroke has replaced the two-stroke. The two-stroke had been the bread an butter machine of the last 40 years. The vast majority of riders racing today learned how to ride on a 50cc, 85cc or 125cc two-stroke. Then when they decided to make the step up to the big time, they switched to a valve-and-cam machine.

It is culture shock to switch from two to four (or back again). You wouldn’t think that it would matter what type of engine was bolted between the wheels, but it does. The MXA wrecking crew wanted to delve into why the two-stroke and the four-stroke are totally different machines. And, while we can’t tell you which is better, we can leave a trail of bread crumbs for you to follow on your search for the best bike.

TWO OR FOUR: WHAT’S THE DIFFERENCE?
Listen and listen good! Two-strokes are “rear-wheel handling” machines-they are guided by roosting, railing and rocketing around a track by using the thrust of the rear wheel to bring about direction changes. True, the front wheel initiates turns, but then it gets out of the way as the rear wheel takes over. The typical two-stroke rider rails into a turn with the front wheel cocked in the hoped for direction of travel, and then grabs the throttle to bring the rear wheel around the apex.

Not so with a four-stroke. Four-strokes are “front-wheel handling” machines-they utilize, depend on and wear out front tires. True, a four-stroke’s rear wheel provides motive power, but the front tire plays a large role in direction changes. Four-strokes and two-strokes are like front-wheel-drive and rear-wheel-drive cars when it comes to cornering.

Why the difference? Two-strokes and four-strokes handle differently because of their unique power characteristics. A two-stroke has snappy power that lifts the front wheel, a quicker rev that allows the rear tire to skim across the top of the ground, and no decompression braking to bury the front wheel into the dirt.

Conversely, a four-stroke revs slower, which allows it to drive the chassis without sudden weight shifts toward the rear. Twisting the throttle of a thumper doesn’t lift the front wheel as much as it drives it into the ground.

Additionally, a four-stroke’s decompression braking creates a massive weight shift to the front end on the entrance to corners. With more weight on the front wheel, even the slightest turn of the handlebars rewards the four-stroke rider with instantaneous response.

IS FOUR-STROKE HANDLING BETTER THAN TWO-STROKE HANDLING?
Which is better, front or rear handling? It depends on track conditions.

Front wheel handling bikes (four-strokes) are better in four conditions:
(1) Off-cambers. On slippery, steep and angled banks, a four-stroke can walk across the top, while a two-stroke slides to the bottom.

(2) Hard dirt. The harder and shinier the dirt, the more a four-stroke likes it.

(3) Perfect traction. The quickest way around any corner is to follow the front wheel. On good dirt, a four-stroke goes where you point it-no push, no understeer and phenomenal accuracy.

(4) Stutter bumps. There is something about the gyroscopic effect, crankshaft weight, centralized mass, “every other” firing cycle and well aimed front wheel that makes stutter bumps disappear on a four-stroke (until they get too big-then watch the front wheel).

What doesn’t a front-wheel-handling bike do well?
(1) Sand. All that wonderful four-stroke steering input is confused by shifting terrain. It wanders, refuses to climb up on top of the grainy stuff and wallows. A two-stroke gets up on the sand and stays there.

(2) Mud. What good is the perfect steering input of a four-stroke when it’s so muddy that you can’t steer? And front-wheel steering is of no use when the front wheel is plowing a trench. In the mud, you depend on the rear wheel for everything.

(3) Big whoops. Rear-wheel handling bikes, like two-strokes, can skip across the top of big whoops because they are able to keep the front end out of harms way. Not so with the front-wheel handlers! A four-stroke likes to drive the front end forward (not up), and in big whoops, having the front end come in contact with the whoops is not a good thing.

(4) Potholes. Two-strokes can bunny-hop square-edged bumps, potholes and G-outs. Four-strokes just make them bigger.

WHAT DO REAR-WHEEL-HANDLING BIKES DO BEST?
Two-strokes like big whoops ( even if the rider doesn’t). They work well in loam, because that gives the rear wheel something to bite into. They love to fly (and are easier to manipulate in the air). They excel at quick direction changes through S-turns. They are superior in the first ten feet off a dirt starting line. They can get totally crossed-up in the rough and come out of it. The deeper the sand, the faster the two-stroke goes (because of it’s snappy power delivery and light weight allow it to get on top).

What don’t they like? Rock hard dirt, off-camber corners, concrete starting pads and straights where the extra displacement and higher rpm of the four-stroke make it faster.

PLEASE TELL US THAT A FOUR-STROKE HANDLES BETTER THAN A TWO-STROKE
No. It doesn’t. Plain and simple, a modern four-stroke is too heavy (and even when it weighs the same, it’s every-other-firing stroke makes it feel heavier). Pound for pound, a lighter bike is easier to work with when it comes to handling. While the four-stroke may stay planted to the ground with more authority than a two-stroke, that plus becomes a minus when it comes time to bunny-hop, get light over braking bumps or make quick flicks.

In the grand scheme of things, you give something to get something. When the conditions favor the four-stroke it is awesome to ride. When they don’t, a two-stroke is awesome to ride. But, when it comes to handling, no four-stroke can hold a candle to a two-stroke.

Motocross Action Magazine supports two-strokes. Please subscribe to their awesome magazine.

Visi atsakymai i visus klausimus klausimus apie 2t - twostrokemotocross.com

skaitau best practice yra kai viskas dziugina ir pox tie plepalai
taigi variantas kaip dziaugtis

nusiperki 6T kiaulini vazioji dziugina
perlipi an 4T hardo leki dziugina
jami 4T mxsa skrendi dziugina
keiti i 2T pirdala uostai dumus dziugina

bele tik dziugina

http://vimeo.com/20935682" onclick="window.open(this.href);return false;
tai kas sekantis ims 125? Tomasenas stai jau parduoda berga, inazuma, buta, garaza, priekaba ir uz visus litus startuos 2t chiampionshipe sektinas pavyzdys!

Woo wrote:http://vimeo.com/20935682
tai kas sekantis ims 125? Tomasenas stai jau parduoda berga, inazuma, buta, garaza, priekaba ir uz visus litus startuos 2t chiampionshipe sektinas pavyzdys!

ash jau pora metu galvoju, nes patinka svoris, motorolerio garsas, kvapas is dusles tik nesu pedantas tai nepatinka tas visas lepumas , manau pirksiu kitais metais, vistiek tomasenas pardavines uz pigiai

pirk inazuma, a?

El Traxo wrote:Spravočnikas žaliems:

The ugliest point though is if you blow one up; selling the house, wife and car should cover costs.

šitas gerulis.
O šiaip tai visi nutyli vieną momentą - kokia dažniausia bėda kankina medkirčius...

Rammst wrote: O šiaip tai visi nutyli vieną momentą - kokia dažniausia bėda kankina medkirčius...

alkoholizmas? mazi atlyginimai? darbas pavojingoje aplinkoje? erkiu sukeliamos infekcijos?

šitos natūralios iš gamtos, bet dar yra nuo dvitakčių variklių specifinių išmetamų dujų...
nepatogu net sakyt, bet viskas tarpukojyje

medkirčių bėdas abdainuoja folklioras

Rammst wrote:šitos natūralios iš gamtos, bet dar yra nuo dvitakčių variklių specifinių išmetamų dujų...
nepatogu net sakyt, bet viskas tarpukojyje

manau laikas akcijai "pasakyk ne dvitakciui smirdukui o tai po to nei varske nei moliugu seklos nepades!". o kas baisiausia, tai jie gali vaziuot prieky ([strike]su kokiu tais gas gas pvz[/strike] su kokia nors honda) uz saves palikdami nedarba, chaosa ir bevaike Lietuva.


EDIT: briedi?

nu jau apie smirduka prasyciau...
nes tai jauciu nieks negirdejot apie braskiu kvapo tepala dutakciui

tautos pigiais triukais su kvapniu blizguciu neapgausi

EDIT: o kas bus atsakingas uz zmoniu ikvepiamu priedu skleidima? skaitau, smirduku turetojai pries raidauta tures visiems kitiems r-out'o daliviams sumoketi po 5 lt ant alaus kovai su impotencija ir prostatos veziu.

kiek ten % viagros ? jei nulis, paskuj nevažiuosiu