Best 150cc for racing??

[2strokegirl]

just asking on behalf of my brother who would like to get into racing.
he is inerested in the rg150 but still isnt that sure about what bike is the best.
any advice on the rg or any other 150 good for racing is apriciated.:yes:

[Mr. Peanut]

Go for what's available. From what I hear, the Kawasaki KR150 is the most competitive.

If you get an NSR150, there's a lot of tuning parts available from TYGA.

If you need to know more information, PM Meekey_Mouse. She races 150s.

[quallman1234]

RG150's are a great bike and basically take up the whole field.
NSR150's are rare as!

Im lucky enough to get a scholarship from Vic Club to race 150s :), great little fun bikes!... Hopefully we might see your brother out there one day :rockon:

[Sketchy_Racer]

Personal experience.

racing both the RG, and the KR.

the short of the long is, the RG is the most common, and typically the faster of all the 150 2t

Next is the KR, which isnt as fast, but has better ground clearance, and better handling for the first lap, then the rear shock overheats and turns to a pogo spring (which is wat tha RG shock is like all the time)

Personally, i would go for the RG, more of them around, so a better database for information, and parts..

Goodluck, if you come racing you wont regret it

-Sketchy Glen

[Mr. Peanut]

So an NSR150 would be pretty competitive huh...

[Sketchy_Racer]

Not nessesarily.

I've never ridden/seen one so can't comment. but if they were that good, they would be more popular..

Plus prices for them are through the roof!

[Momentum]

I know the 150 guys a going to hate me for saying this.

If ya really want to ya go for a cbr 250 or something like that.

Infact i know of one that might be coming up for sale soon too.

anothre good thing about the 250 is its abit more at home on the open road if you want to use it on the road too and still good for round town

[Sketchy_Racer]

yep id agree with Momentum about getting the 250..

It is much faster than the 150s, and is bound to give you easy results compared to the 150.

Hopefully, they will separate the class soon in to 150 points and 250 points, because i really dont believe (read: I know its not) a fair match.

[oyster]

In the South Island Streestock has grown from 3 bikes to around 80 in 3 years and I have a few observations. About 70 are RG 150
FXR 150 are 4 stroke and slow so no good.
RGV 150 (1999) air cooled 2 stroke has primitive handling, 18" wheels (poor tyre choice, and expensive) and slow so no good
KR 150 around 1999 has wire spoke wheels, 18" rear. OK but for short or very small riders. (We have a 36kg girl riding one, it's suits her given she's so tiny.) But primitive chassis, poor ground clearance. Good motor, but plated barrel mens no rebores, only super expensive replacement if it blows up.
KR 150 around 2001. Still crappy 18" rear, handling like early one, (poor) but "cyclone" model ultra fast. Definitely the fastest straight line 150 of all.
Chamber and motor has great GP type bike sound and "ring" to it.
KR 150 around 2003. Great handling. Motor with good torque, but revs like a diesel. ( Flat and slow!) Has 2.5 rear rim. The only 150 with an acceptable rim width. Small, easy for small riders (my son was 42kg when he started on his).
Cool modern looks. Ultimately the fastest, has Ruapuna lap record at 1.44.9.
No Rg has got near that.
RG 150 Best all round. Plenty of them, well understood, on the track and in the workshop. That's certainly the "backbone" of Streetstock down here.
That's the one to get. Any q's just PM me.

[Momentum]

Avalon was only 1/2 sec a lap behind me this weekend

there is not enough people racing in the north island to split them up.

But the main thing about the 250s is they are better for using on the road as well. Then you can take it on the track and have a hell of alot of fun

a little 150 on the open road for a long time would just be a pain in the ass

[limbimtimwim]

The best 150, surely, must be a 125!!!:drool: :drool: :drool: :drool:
<img src=http://www.aprilia.com/upload/modelli/road/p01215_0068.jpg>
http://www.aprilia.com/modelli/road/modello.asp?id=68

[oyster]

The 250 four stroke idea originated in Southland 3 years ago to encourage young riders on restricted road licences to come to the track and be in a safe environmentof similar bikes and the good training associated with Streetstock. Having them in a "sink or swim" situation without support in Clubmans or F3 was obviously wrong. That was the reason, not to allow people to choose them as "the weapon of choice" to clean out the trophies.
This class was seen (down here at least) as a young riders development ground, and it's certainly not fair that they would have to compete with superior bikes they're unable to ride (their licence prohibits it) for the first two years. So we've limited them to be able to ride, but no points awarded,
and no ride at all in the Nat Support Streetstock (grids too full anyway, 46 last year) And finally, it's not allowed in MNZ rules, so a good sharp protest would be interesting....

[Sketchy_Racer]

Pfffft..

thats a Toy compared to the honda RS..

(note* the aprillia RSR125GP has exemtion from above statment, because they are simply yummy, and real GP bikes)

[ZeroIndex]

RG's are good :)

[limbimtimwim]

Pfffft..
thats a Toy compared to the honda RS..Aye, but you have more of a chance of getting the Aprilia RS into streetstock than you do the Honda :)

What about the Cagiva Mito?

Though riding that in SS one would have a high chance of feeling like a dick.

[quallman1234]

Aye, but you have more of a chance of getting the Aprilia RS into streetstock than you do the Honda :)

What about the Cagiva Mito?

Though riding that in SS one would have a high chance of feeling like a dick.

Didnt rossi have one?

I overheard someone saying that the 4's werent meant to be racing in the Streetstock class according to MNZ :shutup: :shit: :angry:

[MOTOXXX]

well the last person i raced against on a cagiva mito blew it up more times than they care to remember.

rg150 is better

cbr250rr is the fastest choice for st stock.

[VasalineWarrior]

Depends how much $ you have. As you can read from the above posts, RG's go good (used to have one so ill vouch for that), are cheap and are common enough to be able to get parts for easily. Thats v,important when your racing!

Yeah, 250's are faster but more to go wrong (4 cylinders=4 pistons and plugs) and initial purchase is heaps. Thank you 250cc learner rule!

Just looking at a cagiva or aprillia, how would you feel about hurling it down the road at coke or higgins? I know it would piss me off

[Ivan]

The club can make its own rules up,


Jared Wintle and Mel Jackson did a test in 2004.


Mel Started on my RG Jarred on the ZXR250 they did afew flying laps on transponders


Then came to the finsh line and swapped bikes and di the exact same and the results were half a second


But This is how the riders found it


The RG150 can be thrown into the corner alot faster and alot harder and corners so well its quick straight line but not as quick as the 250

THE 250 can be thrown into the corner but not as hard or as fast as the RG and doesnt corner as well but the 250 had a bit more punch straight line

[oyster]

We similarly compared the 250 four to 150 two stroke at Ruapuna. For the FZR Yamaha and ZXR Kawasaki threre wasn't much in it, but the real problem occurred later when the CBRR Honda MC 21 turned up. It's around 2 seconds a lap faster.

[Tim 39]

my opinion: (you don't have to accept it) is that I'd definately get an RG, they are far cheaper than a 250 four stroke. I certainly wouldnt go for a 250 four stoke, they feel and handle like a bigger bike (slow to tip in and generaly feel like riding a truck) not to mention the price of buying one!
I raced an RG for a year and loved it, never gave any problems, cheap to but and run.
My opinion is probably biased as I like two strokes better anyway :)

[xwhatsit]

I don't want to take this thread anywhere off course, but I don't think this question warrants a thread in its own right:

How far off the pace would my CB250RS be? 26HP, wide torque band until ~10,000RPM redline, 125kg dry, naked. With decent tyres on and changing the front fork oil I reckon it'd handle as well as any other 250 out there; shit brakes, though.

All other things being equal, would it be coming dead last?

[Ivan]

I reckon you could be competitve depends on how how you ride it I guess

[Tim 39]

I don't want to take this thread anywhere off course, but I don't think this question warrants a thread in its own right:

How far off the pace would my CB250RS be? 26HP, wide torque band until ~10,000RPM redline, 125kg dry, naked. With decent tyres on and changing the front fork oil I reckon it'd handle as well as any other 250 out there; shit brakes, though.

All other things being equal, would it be coming dead last?

I don't think you'd get last (depends on riding of course) but you wouldnt get first either...RG's have about 36 (internet specs) hp at the crank and are 136kg dry, and the suspension is a bit more modern (better)

[t3mp0r4ry nzr]

if I were to race streetstock again Id do it on an RG. with sticky tyres they can really be thrown around and when you can buy them for $1500 I wouldnt mind pushing them to their limits in racing cos they are dirt fix,repair or replace.

[xwhatsit]

I reckon you could be competitve depends on how how you ride it I guess


I don't think you'd get last (depends on riding of course) but you wouldnt get first either...RG's have about 36 (internet specs) hp at the crank and are 136kg dry, and the suspension is a bit more modern (better)

<hints id="hah_hints"></hints>Cool, thanks guys -- not interested in winning races, but racing looks very fun. Just trying to justify how I can keep the CB after I get my full and graduate from uni.

[Kickaha]

I don't think you'd get last


Buckets can finish in the top ten down here, so he definitely wouldn't get last

[TonyB]

Get the RG150 if you want to learn how to ride fast against people on equal machinery.
Get the CBR250 if you want to beat people by passing them with superior power- you'll learn piss all about race craft though.

[Momentum]

Did somone say that the RG's are 36hp

cbrs are only like 35hp too

And as for the race craft remark by tonib i would say that that is a load of crap

I have lernt a hell of alot on my bike

[Sketchy_Racer]

Dont look at figures dude, look as speed difference.

Is it a coincidence that for the last two seasons the bike winning streetstock up here was/is a CBR MC22?? I think not.

Dont get me wrong im not trying to take anything away from you as a rider, but there is a serious speed difference..

as for race craft, i believe the RGs will teach you more. You definatly get punished more if you make a mistake.

Anywho, Im all for keeping the 250s racing in the SS class, but i believe they should be excluded from the points

[quallman1234]

Did somone say that the RG's are 36hp

cbrs are only like 35hp too

And as for the race craft remark by tonib i would say that that is a load of crap

I have lernt a hell of alot on my bike

http://en.wikipedia.org/wiki/Honda_CBR250

45ish hp even if they were only like 35hp you still have a great advantage with a much wider torque band.
Nevertheless your a great rider and i think you would still be at the front if you were on a RG :rockon:

[TonyB]

Did somone say that the RG's are 36hp

cbrs are only like 35hp too

And as for the race craft remark by tonib i would say that that is a load of crap

I have lernt a hell of alot on my bike
Momentum- lend your bike to another good rider, and watch a race from the track side. You'll see what I mean- unless your bike isn't running too good. Down here there are hoardes of RG150's, and a couple of CBR250's. Watching the CBR's racing with the RG's is like watching a 1000 in with the 600's. It simply inhales them on every straight. They're an amazing wee bike:yes:

HP isn't everything. For one thing, the CBR spins out to what, about 18,000rpm? The poor wee RG might do 12ish? So the CBR can take advantage of much lower gearing, hence it will accelerate faster even if on paper the HP figures look similar. It's not a fair fight.

[ajturbo]

I have lernt a hell of alot on my bike


yer..... how to CRASH..... hahahahaha:yes:

[Billy]

Having spent extensive Dyno time with my RG 150 at GP Honda and trying many different jetting scenarios including at one stage completely removing the airbox the most hp we achieved was 29.45 and that was achieved with everything back to standard but with new rings.I would therefore suggest anybody with an RG producing 36 hp has made internal modifications ie:port timing & size,Possibly exhaust mods and should not be running in the streetstock class.Further more have also seen the dyno sheets for some of the 250 4 strokes that had been on the same dyno and the least horsepower achieved was 37 on an 89 ZXR 250 some of the Hondas were well in excess of 40hp.While the laptimes are comparable for sure its bloody hard work to continually have to try and get round a 4 stroke in the middle of a corner when they are using different lines and slower mid corner speed and depending on the rider can become frustrating.Furthermore the only changes made to allow the 250s into streetstock was to change the wording from the rule book to say 250 4 stroke instead of 150 which means the 250 fourstrokes are allowed modifications where as the 150 2 strokes are not.

[t3mp0r4ry nzr]

Momentum- lend your bike to another good rider, and watch a race from the track side. You'll see what I mean- unless your bike isn't running too good. Down here there are hoardes of RG150's, and a couple of CBR250's. Watching the CBR's racing with the RG's is like watching a 1000 in with the 600's. It simply inhales them on every straight. They're an amazing wee bike:yes:

HP isn't everything. For one thing, the CBR spins out to what, about 18,000rpm? The poor wee RG might do 12ish? So the CBR can take advantage of much lower gearing, hence it will accelerate faster even if on paper the HP figures look similar. It's not a fair fight.

I know alex's and myselfs 250's run OE gearing and in fact mine is effectively geared up as I am running a 70 series rear tyre as opposed to a 60 series. My CBR is up to 76,000kms on original engine and original rear shock (I kid you not, no wondr my back tyre looks so chewed up after a race!) more credit needs to be given to the 250 riders.

250's in streetstock means that 150 riders need to lift their game as mediocre riding will result in less than desirable results. but look at Avalon Biddle, she is competitive and will be hard to beat at manfield, she is quick!

[t3mp0r4ry nzr]

While the laptimes are comparable for sure its bloody hard work to continually have to try and get round a 4 stroke in the middle of a corner when they are using different lines and slower mid corner speed and depending on the rider can become frustrating.

in that case the 150 riders need to get under the 250s and cut there lunch in the turns, use the race craft that they are apparently learning and the 250 riders are not:dodge: hehe

elbows out racing will be rewarded

[Tim 39]

Having spent extensive Dyno time with my RG 150 at GP Honda and trying many different jetting scenarios including at one stage completely removing the airbox the most hp we achieved was 29.45 and that was achieved with everything back to standard but with new rings.I would therefore suggest anybody with an RG producing 36 hp has made internal modifications ie:port timing & size,Possibly exhaust mods and should not be running in the streetstock class.Further more have also seen the dyno sheets for some of the 250 4 strokes that had been on the same dyno and the least horsepower achieved was 37 on an 89 ZXR 250 some of the Hondas were well in excess of 40hp.While the laptimes are comparable for sure its bloody hard work to continually have to try and get round a 4 stroke in the middle of a corner when they are using different lines and slower mid corner speed and depending on the rider can become frustrating.Furthermore the only changes made to allow the 250s into streetstock was to change the wording from the rule book to say 250 4 stroke instead of 150 which means the 250 fourstrokes are allowed modifications where as the 150 2 strokes are not.

I think the 36hp is measured at the crank as far as I know, is yours from the back wheel? when you remove the airbox it will decrease the power unless you make the appropriate jetting changes to your carb to make it run at the correct mixture

[Sketchy_Racer]

I know alex's and myselfs 250's run OE gearing and in fact mine is effectively geared up as I am running a 70 series rear tyre as opposed to a 60 series. My CBR is up to 76,000kms on original engine and original rear shock (I kid you not, no wondr my back tyre looks so chewed up after a race!) more credit needs to be given to the 250 riders.

250's in streetstock means that 150 riders need to lift their game as mediocre riding will result in less than desirable results. but look at Avalon Biddle, she is competitive and will be hard to beat at manfield, she is quick!

Credit needs to be given to 250 riders that are beating 250 bikes.

As i said earlier, I dont wanna take anything away from the 250 riders, because there are some really good ones, But

At the end of a day, its still a 250 vs 150. It will NEVER be fair.

As for 150 riders needing to lift thier game, well so your then saying 250 riders can pull off some mediocre riding, and get great results, but the 150s are expected to try soooo much harder??

I can assure you, if you 70k old rear shock hasnt dumped all its oil, it'll still be alot better than the pogo spring the the RG's have.

[Sketchy_Racer]

in that case the 150 riders need to get under the 250s and cut there lunch in the turns, use the race craft that they are apparently learning and the 250 riders are not:dodge: hehe

elbows out racing will be rewarded

whats the point putting the effort in if they are going to get blown away down the straight??

[Tim 39]

I have raced a 150 against an FZR and ZXR250, it was an interesting experience (they tried telling me that 150's were so much faster, even with double disc front ends and usd forks) straight off the start they got 1st and 2nd into the first corner by dragging us off. A lot of 150 riders had an issue with it because of their blocking lines and extra power down the straight. I found their weak point though, because they were so much slower to tip in it meant we could block them etc etc in the corners My "don't get angry, get even" tactic worked well by the end. They went 125gp and not long after I did too, the difference in what I'd learnt over what they learnt became obvious now that they couldnt drag people off down the straight

[Tim 39]

I'm not saying that 250's with 150's is even, so its right that they don't get points. Instead of the 150 riders getting angry about it though, use them as good practice for learning racecraft because they did me some good

[TonyB]

They went 125gp and not long after I did too, the difference in what I'd learnt over what they learnt became obvious now that they couldnt drag people off down the straight sweet! That is exactly the point I was trying to make with the racecraft comment

[t3mp0r4ry nzr]

I need to say that everything I say is tongue in cheek and I dont mean to offend anyone or fire anyone up.


I found their weak point though, because they were so much slower to tip in it meant we could block them etc etc in the corners My "don't get angry, get even" tactic worked well by the end.

This is my point. When I race up against other 250's I need to find the weakness's of the other rider to exploit in order to pass them. the same goes for 250 vs 150 battles. the 250s are fast on the straight, that is whats obvious but what isnt obvious is that they take longer to haul up under brakes and slower to tip in. a serious 150 racer will see this weakness and exploit it where possible.

judging from round 2 at manfield, there is less than half a second difference between a very good 250 rider and a very good 150 rider. there is not a huge difference as many claim

[Racey Rider]

add into the equation the light weight of said 150 rider.
(Don't worry Avalon, I won't say how much you weigh on a Public forum).

[TonyB]

Having seen a 250 pass RG150's in group of 2 and 3 just from the dipper to the sweeper at Ruapuna, I'm a bit skeptical that better braking will make up the ground:dodge:

[Tim 39]

Ok this is my opinion on the whole 250/150 argument.. its easier to do OK on a 250 than a 150, (don't need to get as much drive on 250 because more power so they can afford to make more mistakes) right at the front however I think there isnt much in it (maybe not the case for CBR's, by the sound of it are a lot faster).
At the end of it all the 150 rider has learnt more about passing, and the 250 rider has learnt how to get away with making errors. If you wanted to go F3, you could get a four stroke if you like, if you're going to go two stroke definately a two stroke 150. After that it's all up to personal preference

[Billy]

Agreed.The fastest bike for 150 streetstock is a 250 but the best to learn racecraft on is an RG 150.Its down to your preference

[koba]

An odd question, but how do you guys think my old GSX 250 would do?????

Oil cooled 250 parallel twin.
179kg (according to manual) dry weight! (fat aye!)
Steel all over, inl swingarm but can be biffed down the road time and time again! (really not highside friendley, but what bike is?)
Single front disc.
Think they make mid 30's HP at crank but not sure???

I am considering doing streetstock instead of clubmans....

[Tim 39]

An odd question, but how do you guys think my old GSX 250 would do?????

Oil cooled 250 parallel twin.
179kg (according to manual) dry weight! (fat aye!)
Steel all over, inl swingarm but can be biffed down the road time and time again! (really not highside friendley, but what bike is?)
Single front disc.
Think they make mid 30's HP at crank but not sure???

I am considering doing streetstock instead of clubmans....

If you were a good rider you may be able to get bottom third of the field (estimate as it depends quite a lot) if you were out to have some cheap fun you could have plenty on it, if you're in it to win it dont bother on that.
thats my thoughts anyway...

[koba]

Yeah was thinking my goal would be to not come last...

Currentley my goal is for my homemade (not by me) bike is to get all the way thu qualifying and one race, without somthing going wrong!

Round 3 will be attempt 3 for that, hence the streetstock idea...

Pissing around with a silly homejob bike is kinda fun tho!

[Tim 39]

Pissing around with a silly homejob bike is kinda fun tho!

I think it's all to do the satisfaction of knowing you fixed it well if it lasts a whole meeting! like a wee challenge as well as actually riding it

[koba]

I think it's all to do the satisfaction of knowing you fixed it well if it lasts a whole meeting! like a wee challenge as well as actually riding it

yeah and staying on thru the vibration of a big single with no balance shafts!
Thats a challenge and a half!
Great fun tho.

I would say to anyone reading this thread and hinking about a GSX 250 in SS - Go for it! at least they dont sound like a P smoking sewing machine :)