Best 150cc for racing??

[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

[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

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

[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 ieort 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

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 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 ieort 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 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