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hi im a new user here,
i know nothing about bikes, and woul like some information and opinions on cbr250, nsr150 or cbr125? whats the strokes? ive heard the 2 stroke nsr150 is quicker than cbr250 but have no idea how it works and so forth..
also i weigh 90kgs+, would the small 150 and 125 struggle?
Yes i have read a few previous pages and found nothing relevant, and theres too many pages to flick through to and from page 1.
If someone could give me some background knowledge and help me decide it would be appreciated.
Cheers
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 Originally Posted by tonee
woul like some information and opinions on cbr250, nsr150 or cbr125? whats the strokes? ive heard the 2 stroke nsr150 is quicker than cbr250 but have no idea how it works and so forth..
also i weigh 90kgs+, would the small 150 and 125 struggle?
Yes i have read a few previous pages and found nothing relevant, and theres too many pages to flick through to and from page 1.
If someone could give me some background knowledge and help me decide it would be appreciated.
Cheers
Hope this helps bud...
Info and Opinions
* CBR250/250R/250RR - 250cc, 4 stroke, sports bike which is popular with most L platers going for a mix of speed and looks. Majority of these bikes are imported (also called a Grey Import) and because of this have gone through about 30 other people before you lay your hands on one. There are Aussie delivered cibbys (CBR's) which from what im told range from 1997-1999 and were imported directly by Honda Australia and sold as new (production on all CBR's actually ended in 1996). Preferably, go for an Aussie del bike, as its less likely to have been wound back by an importer, but chances are it's been wound back anyways. Anything less than 40,000 kms is asking for a bit much for a 20 year old bike... so keep an eye out for wear and tear on things like the chain/sprokets/cracks in frame/slide marks on anything but fairings.
The RR's are the newest version of the CBR250's above, differences between two... (thanks to cbr250.com)
** CBR250R (MC19) **Engine: 249cc, 4 stroke, 4cyl inline, 16 valve DOHC
Redline @ 18,000rpm
Chassis/Frame: More upright seating position, engine higher up.
Brakes: Single disc front and rear
** CBR250RR (MC22) **
Engine: 249cc, 4 stroke, 4cyl inline, 16 valve DOHC
Redline @ 19,000rpm
Chassis/Frame: Frame was different, lower seating position, curved rear arm
Brakes: Twin discs front, single disc rear
Some good equivalents would be bikes like the ZZR250's, GPX250's or the ZX2R. A lot cheaper than many lemon CBR's going around. You could also try out the highest selling bike of 2008, the Kawasaki 250R Ninja, which looks awesome, there are heaps to choose from, and you get a decent package for the price you pay (Yes! Aussie delivered and most still have factory warranty!)
** 2 Stroke / 4 Stroke **
Now before I tell you about our 2 stroke NSR, ill clarify the difference. The most simple way to put it is that a two stroke basically involves oil being fed into the motor WITH the fuel supply, whereas a 4 stroke has a separate resovoir to hold oil and lubricates pistons etc from the outside. 2 stroke does this in reverse (to some extent).
Normally, with a 2 stroke lawnmower, whippersnipper, or anything in your shed, you would have to mix the fuel you buy with a certain % of oil before filling your tank up. Thankfully, the smart Japs realised that people wouldnt be too happy constantly measuring up oil:fuel ratios every time they filled, so two stroke bikes have a separate tank for fuel and oil which automatically mixes as you ride.
* NSR150 - 150cc, 2 stroke, 1 cyl, light, about 130kg... but produces power similar to a 250cc 4 stroke, but similar to our vtakkk its going to take a while to rev it out to get that power. Even taking off from a stop start will take a bit of revving to get moving, and if you weight 90kg+, its just going to take longer. They are also getting old now, and 2 strokes are less efficient, and harder to manage than a 4 stroke (Think rotary:cylinder for a good idea). Some other bikes in the same class are the RS125 (Aprilia), and Cagiva 125 which are a hell of a lot newer, but higher priced ($6000+).
* CBR125 - 125cc, 4 stroke, about 115kg so lighter than most but a lot newer and a lot LESS powered (9.5kw @ motor baby!). This thing is not suitable for Australian roads, its not going to haul the average aussie male around. If your 60kg, your power to weight ratio is going to be around 50kw/tonne lol...
When looking for a bike... Pay attention to the small details and look past the pretty fairings... its easy to clean up a bike, get new fairings, paint it. put some team repsol stickers on it, only to still have the same uncared for bike that they cracked in the first place...
If you are a heavy bloke, probably wouldnt reccomend getting any of the above, the cibby will get you around but maybe consider a decent 400cc or maybe a 500/650 even? If you can look past the hekticness of riding a 250cc superbike  then maybe go for an easier to ride naked bike like the VTR250? Naked bikes (ones that dont have the plastics around the motor and radiator) are a lot easier to ride during your l's test as well... remember, turning in a sportsbike is a lot more restricted than most others. If you have a bad back or you are tall like me, you might get some issues with bending over all the time. My mates usually kick the air, and stretch on rides every 5 mins. Also, try to test out a bike before you commit to buying one, it may be harder for you as a learner, but if you are serious and nice enough, and have some cash for them to hold and smell as you ride it around, they should be alright...
Thats all I could think of... its late and im tired... hope it helps 
Last edited by Twincam16; 12-03-2009 at 11:35 PM.
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Mate I had a cbr250rr and never had any issues. It was quick and it revved very smoothly.
Although that was a good example, there are alot of duds out there floating around that will have continuous problems and have probaly been written off in the past.
I reckon the aprillia RS125 is a nice learner bike too!
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Originally Posted by bubblecivic
Mate I had a cbr250rr and never had any issues. It was quick and it revved very smoothly.
Although that was a good example, there are alot of duds out there floating around that will have continuous problems and have probaly been written off in the past.
I reckon the aprillia RS125 is a nice learner bike too!
Never said it wasnt a great learner bike, only to be wary of what you are looking at buying... especially since if someone is an L plater now, your gonna need a bike to kick through at least 3 years of restricted riding...
Still, there are heaps better options out there
Last edited by Twincam16; 15-03-2009 at 09:13 PM.
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Originally Posted by Twincam16
* NSR150 - and 2 strokes are less efficient
Bullshit.
Honda Accord Euro CU2 / Lexus IS-F
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Originally Posted by Type R Positive
Bullshit.
Well thats a good reply but Ill rephrase it...
2 strokes are less reliable...
Because of this they do have efficiency problems... the reason they are used is because they are lighter (power:weight)... and cheaper to make... but you wont find a car with a 2 stroke engine because its not as reliable or efficient...
There is also the fact that the engine is burning oil at a higher rate than a 4 stroke so its going to need a topup of oil more frequently than the 4 will... so its less efficient
A 2 stroke wont last as long, so its less efficient...
More expensive maintaining it as well... costs more to run
Last edited by Twincam16; 16-03-2009 at 11:34 AM.
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Originally Posted by Twincam16
Well thats a good reply but Ill rephrase it...
2 strokes are less reliable...
Because of this they do have efficiency problems... the reason they are used is because they are lighter (power:weight)... and cheaper to make... but you wont find a car with a 2 stroke engine because its not as reliable or efficient...
There is also the fact that the engine is burning oil at a higher rate than a 4 stroke so its going to need a topup of oil more frequently than the 4 will... so its less efficient
A 2 stroke wont last as long, so its less efficient...
More expensive maintaining it as well... costs more to run
Less reliable? I'd stop now if I were you.
From your talk I can tell you have never owned a 2 stroke.
CR500 2 stroke = most reliable bike ever built.
2 strokes make more power per capacity than 4 strokes.
Power efficiency goes to the 2 stroke.
Parts are way cheaper. I had to rebuild the top end on my 4 banger, cost over $2,500 for parts from USA. Costs 1/5 of that for a cylinder and piston on my 2 stroke. Bikes are cheaper to buy for starters too. Cost efficiency also goes to the 2 stroke.
Maintenance is also a win for the 2 stroke. I could change a piston out in 10 minutes on my 2 banger. Same job takes 1/2 a day on my 4 stroke. Cams FTL.
Down side is mixing fuel, and using more fuel. Both problems are solved on EFI 2 strokes. Pity only available on outboards at the moment. Replacing rings is also more frequent on small 2 strokes, but my 500 2 stroke needs them replaced like every 2 years, just like my 4 stroke.
As for no 2 strokes in cars? There has been quite a few. Even trucks run 2 stroke diesels. 
Last edited by Type R Positive; 16-03-2009 at 03:28 PM.
Honda Accord Euro CU2 / Lexus IS-F
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Originally Posted by Type R Positive
Less reliable? I'd stop now if I were you.
From your talk I can tell you have never owned a 2 stroke.
CR500 2 stroke = most reliable bike ever built.
2 strokes make more power per capacity than 4 strokes.
Power efficiency goes to the 2 stroke.
Parts are way cheaper. I had to rebuild the top end on my 4 banger, cost over $2,500 for parts from USA. Costs 1/5 of that for a cylinder and piston on my 2 stroke. Bikes are cheaper to buy for starters too. Cost efficiency also goes to the 2 stroke.
Maintenance is also a win for the 2 stroke. I could change a piston out in 10 minutes on my 2 banger. Same job takes 1/2 a day on my 4 stroke. Cams FTL.
Down side is mixing fuel, and using more fuel. Both problems are solved on EFI 2 strokes. Pity only available on outboards at the moment. Replacing rings is also more frequent on small 2 strokes, but my 500 2 stroke needs them replaced like every 2 years, just like my 4 stroke.
As for no 2 strokes in cars? There has been quite a few. Even trucks run 2 stroke diesels.
Listen, I didnt post it up to have an argument with anyone on here... I gave some info to a guy who asked about a few different models of bikes and peoples opinions on them, that is my opinion, if you have a different opinion, post it up dont have a crack at me...
I never said anything about 2 strokes being used in Trucks or Deisels
And comparing the cost of a 4 stroke parts to 2 stroke parts is ironic... Fair enough 2 strokes are usually a lot cheaper to replace, but this is because they are cheaper to make, and use a lot less parts. But lets not forget you are going to have to replace them more often though, and accomodate for labour and you've got yourself more than enough to accomodate the saving you would have made
I cant think of many higher (more than 250cc) capacity superbikes that would use a two stroke apart from maybe those Aprilia RS's... And I assume with FACTS the reason for this is because they are unreliable or less efficient (in comparison to a 4 stroke)...
Explain me this... If a two stroke is as reliable as a 4 stroke as you say... and seeing that they are 1- cheaper to manufacture, and 2- produce power for less cubes and retaining a higher P:W ratio, then why are the most leading bike manufacturers constantly using 4 stroke motors in their top of the line bikes? let alone the whole range apart from the <250cc'ers
Answer... because they are not as efficient...
Last edited by Twincam16; 17-03-2009 at 10:51 AM.
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Originally Posted by Twincam16
Explain me this... If a two stroke is as reliable as a 4 stroke as you say... and seeing that they are 1- cheaper to manufacture, and 2- produce power for less cubes and retaining a higher P:W ratio, then why are the most leading bike manufacturers constantly using 4 stroke motors in their top of the line bikes? let alone the whole range apart from the <250cc'ers
Answer... because they are not as efficient...
Bullshit again!
The reason they don't make them is because of race rules.
2 strokes are not allowed in Moto GP. Just like in AMA pro MX and SX.
You have to be more specific when talking about efficiency.
They are less fuel efficient, not less efficient.
It's funny how a clean sweep of 2 strokes from 1996 still hold the Eastern Creek lap records....
Honda Accord Euro CU2 / Lexus IS-F
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Originally Posted by Type R Positive
Bullshit again!
The reason they don't make them is because of race rules.
2 strokes are not allowed in Moto GP. Just like in AMA pro MX and SX.
You have to be more specific when talking about efficiency.
They are less fuel efficient, not less efficient.
Do you have sand in your vagina?
If something is less efficient, its less efficient... I didnt answer the guy that asked me whether trucks used diesel, the rules of MotoGP or if the earth spins on a 13 degree axis.
I simply said that 2 strokes (more precisely a 20 year old 2 stroke - the NSR150) is not a good option to go for due to its old age, and its lack of EFFICIENCY... theres about another 50 points why he SHOULDNT get an NSR150 but thats one of the main ones
Better yet... take your pointless one sided argument to Boostcruising
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