Top speed.

superman · Post by **superman** » Tue Apr 17, 2007 12:57 pm

Ok ppl i have a question, went to wales the weekend with afew pals anyway got to a nice safe strech on a duel an clocked the bike up to 130is or about, anyway i was in 5th gear when i hit that so when i smashed it to 6th not a fat lot happened to be honest lol no extra top speed or out. is this normal do you think

cheers

Post by **deviant** » Tue Apr 17, 2007 1:10 pm

prob normal

i can't be bothered to work it out now I'm afraid but given the bike is theoretically geared for over 140 it is quite possible that at 130mph it is generating at least as much torque in 5th as in top, so when you change gear you don't get any benefit - neither gear is producing enough torque to overcome the wind resistance.

It's a good argument for downgearing your bike. mine runs out of revs at about 125-130 now but at least the engine can get it there, and get it there quickly. I never got past about 110 on standard gearing cos it took so long to wind up!

superman · Post by **superman** » Tue Apr 17, 2007 1:26 pm

Yea that thing you were on about is rite........................
lol, i get what you mean thoe the bike had no problem gettin to 130 but from 120 to 130 its not to quick goin up, but im chuffed the baby went rite up to 130 it showes some 600s up that does to be honest dont it.

RedexRobB · Post by **RedexRobB** » Tue Apr 17, 2007 1:29 pm

Never really had problems getting past 130, not that i recall anyway. From about 120 upwards its slow getting there but it does get there eventually. Had mine maxxed out at an indicated 145.

Post by **deviant** » Thu Apr 19, 2007 7:46 am

must have had a pretty long bit of road rob!

mind I do have the aerodynamics of a brick, particularly with the old screen that I couldn't tuck behind!

RedexRobB · Post by **RedexRobB** » Thu Apr 19, 2007 7:50 am

Well i only weigh 10 stone so nothing major to carry, the road itself wasnt that long, its a main road that comes off the motorway, and the slip road off the motoway onto this road is a nice sweeping curve, so just pinned it from the motorway down the slip road and hung on. Was side by side my mate on his Bandit 1200, just just creeping past him.

Post by **deviant** » Thu Apr 19, 2007 7:51 am

bloody hell rob, you're up a bit early for a student aren't you?

i'm only on cos I'm in work early having dropped the other half of at the airport.

RedexRobB · Post by **RedexRobB** » Thu Apr 19, 2007 8:03 am

Lol, cheeky bugger!

Im always up early, im an early riser

Post by **deviant** » Thu Apr 19, 2007 8:11 am

lucky you.

actually I generally am too. However after being out at a gig until 1am and then up at 5 to drive to the airport I'm feeling slightly out of it!

I suppose since it's gone eight now I ought to actually do some work rather than just abuse the office internet connection!

later,

RedexRobB · Post by **RedexRobB** » Thu Apr 19, 2007 8:19 am

Abuse the office internet connection?? In what way?

superman · Post by **superman** » Thu Apr 19, 2007 8:41 am

well i cant see mine getting to 145 no way not even if i was 10 stone, im 12 now thoe but you have done the engine on yours ain you so thats probly why its good for 145 plus weight etc.. my mates gixer 600 went up to 172mph an he said the book said it only done 160 so that was a bonus for him.
Oh you know the bigger the bike do you save more on fuel cost cos the ZX of mine only does 100 miles for a tenner which aint bad but still.

RedexRobB · Post by **RedexRobB** » Thu Apr 19, 2007 10:09 am

Engine is completely standard on mine, apart from the beet titanium system and the scorpion can i had on it at the time, but even my first ZXR which was totally standard pulled 145. Chavyboy who used to frequent here, we went out one day and he saw 150 while mine said 145 burried on the limiter side by side. Speedo's arent very acurate at all over 80mph so 172mph could be very optimistic. I doubt my ZXR was even doing 145, more like 135. Indicated speeds and actual speeds are two very different things.

It could be that your engine isnt as tip top as you think perhaps? I know my first ZXR was, it went 6K miles without a service and the valves didnt need doing at all, the guy at the garage said 'it's obviously a sweet engine'.

Post by **masterofinsanity** » Thu Apr 19, 2007 10:36 am

there's a lot of factors to consider when obtaining top speeds, the zxr400 official claimed top speed is 137mph but it depends on the bike setup, the weight of the rider, wind resistance, uphill, downhill or flats etc etc

superman · Post by **superman** » Thu Apr 19, 2007 11:16 am

yea i kind of know my engine aint it peak condition it needs a good service to be honest ill be doin it after my holiday i think then it will be good goin i hope anyway.
his speedo is digital thoe, i thought they were fairly accurate but im defo no mechanic. all i know is that 130 was fast you know that if somet goes wrong your as good as gone lol.

Post by **cargo** » Thu Apr 19, 2007 11:28 am

I'm told that at this years Manx GP on the TT course there will be a radar speed trap at the end of a very long straight..........it's best part of 2 miles and you get on to it in top gear singing out at 14,000.

Always wanted to know what my ZXR can do..............full report in September