ZZR250 Vs CBR250RRRR RRRRRRRRRRRRRRRRRRRRRRRRRRRR

[justsomeguy]

HI yawl

According to these stats from http://www.motorbikes.be/en/compare.aspx

My ZZR250 should be equally as fast or a little bit slower than a CBR250RRRRRRRRRRRRRRRRR

But from my experiece this isn't the case. It's a lot slower Why is this so??

[sAsLEX]

older cbrs meant to make a bit more power, plus cbrs have a better chassis brakes etc so technically handle the tight stuff better, but most of it is how and who is riding

[John]

Hmmm, remember you cant beleave all you read....(edit: including my spelling)

So many different factors involved, the ZZR on a dyno would hit about err 23ps(ish)? Hp the CBRR will see around 33ps.

[justsomeguy]

As you know I own a ZZR and I;ve ridden a 1990 CBR250 from Red Baron on a test ride.

The little honda had a much bigger shove starting off the lights and the speed with which it accelerated.

[SPORK]

Isn't the ZZR only something like 2-valve?

[k14]

Its pretty obvious that the zzr's specs are bloated alot more than the cbr's. You should be able to tell that a twin is never going to have as much power as a 4. I think the zzr would probably have closer to 30hp rear wheel whereas the cbr's tend to get about 37 or so hp at the rear wheel. The specs say that the zzr is 5kg heavier but i doubt that would make much of a difference. Pretty sure its all down to the power figures being over inflated. 4 beats a twin any day in power, doesnt always mean its faster but in this case it definately does.

[John]

2 cylinder... 8 valve.
vs
4 cylinder... 16 valve.

Remove the restrictor crap and the field opens up, but that site is also not that great for reference as they use the same specs for just about all the bikes, not entirely acurate - and as for comparision JSG you know which is faster! the zxr, duh :lol:

[ricksta]

HI yawl

According to these stats from http://www.motorbikes.be/en/compare.aspx

My ZZR250 should be equally as fast or a little bit slower than a CBR250RRRRRRRRRRRRRRRRR

But from my experiece this isn't the case. It's a lot slower Why is this so??
interesting comparison there...

hmm someone told me that my 1988 CBR 250R *note: only one R not RR* has 49 HP but that picture says that the RR has 40HP...

can someone explain?

[John]

Its pretty obvious that the zzr's specs are bloated alot more than the cbr's. You should be able to tell that a twin is never going to have as much power as a 4. I think the zzr would probably have closer to 30hp rear wheel whereas the cbr's tend to get about 37 or so hp at the rear wheel. The specs say that the zzr is 5kg heavier but i doubt that would make much of a difference. Pretty sure its all down to the power figures being over inflated. 4 beats a twin any day in power, doesnt always mean its faster but in this case it definately does.
whoa wtf? hax.

sorry but are you sure on those figures O_O

[justsomeguy]

2 cylinder... 8 valve.
vs
4 cylinder... 16 valve.

Remove the restrictor crap and the field opens up, but that site is also not that great for reference as they use the same specs for just about all the bikes, not entirely acurate - and as for comparision JSG you know which is faster! the zxr, duh :lol:

Yes I do that's why you don't see it here in this comparison.

45hp and lots of other advantages.

And please explain a little more about removing this restrictor crap business.

Small words and simple language please, as I'm spectacularly illiterate when it comes to these matters.

[SPORK]

interesting comparison there...

hmm someone told me that my 1988 CBR 250R *note: only one R not RR* has 49 HP but that picture says that the RR has 40HP...

can someone explain?
Someone's nose grew a bit from that...

[ricksta]

Someone's nose grew a bit from that...
:D ehem.. yea... :laugh:

[John]

Well the thing is, all the HP is measured at the crank its all really really bloated jew crap to be honest.

Restrictors from all grey imports limit the speed or BHP of the bike depending on size of the bike, i.e the ZXR250C has a stupid jew crap relay type device in it that makes the bike stop going higher when it hits 180, cross a few wires slap a new speedo on derestricted, same princible for most bikes... unless they are large i.e 1litre or such then it gets into ignition timing and oh geez just so much other crap I'm to lazy to talk about it.

My bike dyno'd to 33.2ps when I bought it, and had a 4% speedo miscalabration, which let it get to 193. So now without the restrictor it would be abit higher in HP, I would hope?... Although I'm not up with the entire HP measurement system works so dont quote me, I'm off to wait for my bike to get painted ..

[Mr Skid]

interesting comparison there...

hmm someone told me that my 1988 CBR 250R *note: only one R not RR* has 49 HP but that picture says that the RR has 40HP...

can someone explain?
Specs for a CBR250R(J) are 45ps at 15,000rpm and 2.6kg/m at 10,500rpm.

[justsomeguy]

ok.

But I hope you're not talking of top speed here. Cos I know the CBR is faster from riding with Mr Skid on the Taupo straight.

I'm talking about acceleration, even at speeds around 140 the CBR is way more accelerative and will keep pulling. Whereas around 150 my bike just slows until around 160(on a good day) it just hits the wall.

[justsomeguy]

Specs for a CBR250R(J) are 45ps at 15,000rpm and 2.6kg/m at 10,500rpm.

Does ps = hp and kg/m = 10Nm ??

Forgive me but I did a lot of copying in high school.........

ahh.... naah physics was not too interesting.

[ricksta]

Specs for a CBR250R(J) are 45ps at 15,000rpm and 2.6kg/m at 10,500rpm.
oh really? damn... thats great! :D where did u get the specs from?

[justsomeguy]

oh really? damn... thats great! :D where did u get the specs from?

probably up his :wait: , never mind.......:no:

[250learna]

Someone's nose grew a bit from that...

haha :killingme :killingme :killingme ohh thats good,
as far as i know the older cbr has 45horses and so does the zxr, zzr (older ones) are closer to 36?
but being 15 years old im not sure they wil all be makind that much, as for a 94 cbr model im not sure why they would bring the power down... maybe some crazy asian restriction? :blink:

[John]

GOD DAMN NEXT PERSON WHO POSTS FACTORY SPECS GETS CANCER. (SIG)

:lol:

Re:JSG
You really have to think about it 4 pistons doing the same work as 2 are going to go alot faster than 2 big fat thickies doing the same thing, its like forwards and backs in rugby, the IL4's are the backs (fast but not a HUGE amount of torque, strength etc) where as the Forwads are the twins/singles (big strong but not as fast).

Thats the best analogy I can think off with this stupid mind altering concussion, the headace burns I tell's yee.

[justsomeguy]

GOD DAMN NEXT PERSON WHO POSTS FACTORY SPECS GETS CANCER.

:lol:

Re:JSG
You really have to think about it 4 pistons doing the same work as 2 are going to go alot faster than 2 big fat thickies doing the same thing, its like forwards and backs in rugby, the IL4's are the backs (fast but not a HUGE amount of torque, strength etc) where as the Forwads are the twins/singles (big strong but not as fast).

Thats the best analogy I can think off with this stupid mind altering concussion, the headace burns I tell's yee.

Thanks for the info jonno:yes:

You still have headaches??? Shit matey you did hit the coconut hard eh??:no:

Good thing you can't possibly get any dumber eh??:D

[John]

Thanks for the info jonno:yes:

You still have headaches??? Shit matey you did hit the coconut hard eh??:no:

Good thing you can't possibly get any dumber eh??:D
Nah nothing in there, I think the bike in my head just had a writeoff or somthing... :lol:

[justsomeguy]

Nah nothing in there, I think the bike in my head just had a writeoff or somthing... :lol:

:killingme :killingme :killingme

would give you a rep point for that but I gotta spread some rep points first...:wait:

stupid admins:mad:

[ricksta]

:killingme :killingme :killingme

would give you a rep point for that but I gotta spread some rep points first...:wait:

stupid admins:mad:
oh oh! pick me! pick me! *jumps around like donkey*