CBR vs ZXR

**sil3nt** · 18th December 2009, 18:47

Originally Posted by wbks

if cbs get 35 max, i doubt ur gpx gets 30

29 with modified exhaust. Not sure what else he has done so another 4 or 5 HP might be possible?

**wbks** · 18th December 2009, 18:50

Originally Posted by sil3ntwar

29 with modified exhaust. Not sure what else he has done so another 4 or 5 HP might be possible?

installed a harley engine?

**sil3nt** · 18th December 2009, 18:52

http://www.youtube.com/watch?v=HejmlXHlcmk

26 stock standard. Sounds about right. 29 was taken from here http://www.twobros.com/Cust_Service/...ex250_2006.pdf which puts stock at 28. So new exhaust and modified airbox might get it up around 30.

**Scotty595** · 18th December 2009, 19:51

Originally Posted by SMOKEU

My MC19 has a definate power surge starting at 15,000rpm, not 13-14,000rpm.

Yeah, I start to feel it hard at 15,000 but can feel it starting to roll on at bout 13-14k (mainly when in 4th-6th on motorway)

**SMOKEU** · 19th December 2009, 00:05

Originally Posted by Scotty595

Yeah, I start to feel it hard at 15,000 but can feel it starting to roll on at bout 13-14k (mainly when in 4th-6th on motorway)

It feels similar to a VTEC Integra, that sudden surge in power as it comes into its power band.

**The Pastor** · 19th December 2009, 01:04

Originally Posted by wbks

thats a pretty good reading at the wheel, then

um its not at the wheel.

**Scotty595** · 19th December 2009, 12:12

Have you considered a 3LN - FZR?

Everytime I ride my mates it puts a massive smile on my face because the sound is just fucking insane. It really screams, and it feels faster than my cbr too (it doesn't go faster, just feels it)

**Phreak** · 29th December 2009, 00:13

Did anyone think that maybe the earlier quote might have been Kilowatts not Horsepower? All the spec sheets on pre-1994 CBR 250's say 45HP and 34kW.

Only question is whether this is at the engine or the back wheel...

**brendonjw** · 29th December 2009, 06:36

Any manufacturer HP or KW figure is at the engine, they never post the at the wheel figure

**Grasshopperus** · 29th December 2009, 10:17

Originally Posted by wbks

Not trying to be a dick here, but do you have any trouble going hard on that? How fast have you had it?

Yeah, I've seen people say they've had their ZXRs up to 185Km/h. I've only managed to get 160 on a long straight and it really starts slowing down at 140.

I'm almost the same weight as the bike ffs. I'm sure the low HP bikes are affected much more by rider weight than say cars or big bikes.

**Slyer** · 29th December 2009, 11:19

Originally Posted by Grasshopperus

Yeah, I've seen people say they've had their ZXRs up to 185Km/h. I've only managed to get 160 on a long straight and it really starts slowing down at 140.

I'm almost the same weight as the bike ffs. I'm sure the low HP bikes are affected much more by rider weight than say cars or big bikes.

I've managed 170 on my GPX250

**koba** · 29th December 2009, 12:27

Originally Posted by Grasshopperus

Yeah, I've seen people say they've had their ZXRs up to 185Km/h. I've only managed to get 160 on a long straight and it really starts slowing down at 140.

I'm almost the same weight as the bike ffs. I'm sure the low HP bikes are affected much more by rider weight than say cars or big bikes.

Originally Posted by Slyer

I've managed 170 on my GPX250

Yeah, yeah, blah blah.

I've seen 190KPH on my RG150, but it was 160KPH in actual speed.

Speeds by the speedo mean nothing anyway, timed sprint events are the best way to know what the actual speed is.