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+--- Thread: 2002 model speed limiting (/showthread.php?tid=3336)
Re: 2002 model speed limiting - Ozibusa - 30-04-2002
"not that i want to really see 300"
Yes you do. <i></i>
Restricted - OLD CAHN - 01-05-2002
Redline in 5th gear indicates 300kph on my 99 bus !!!
<i></i>
Speed Restricted - Gnarbunkle - 03-05-2002
An aftermarket ECM will get you out of trouble, pricy though. <i></i>
Re: Speed Restricted - demeester - 03-05-2002
I have been led to believe that it can be done by someone who knows what they're doing cheaper by friggen around in the wiring loom directly... <i></i>
Re: Speed Restricted - Scott W - 04-05-2002
Can somebody who has a 2001 or 2002 model confirm if it is true that you can go faster top speed in 5th than you can in 6th? <i></i>
need for speed - Beestroyer - 05-05-2002
I'll research it for ya on my 02 when i fing a very long straight next. I got an indicated 290 or so in 5th which was pretty close to redline but road runs out very quickly and im not game to use a freeway.
So, I cant answer your question just yet. <i></i>
Re: 2002 model speed limiting - Ozibusa - 07-05-2002
Beestroyer - guess the old "not that i want to really see 300" is really out the window now.
I can't see why a busa'd be slower at top in sixth than in fifth. I can't recall what speed the '01 on bikes were limited to (300 kph seems familiar) and from memory redline in 5th is somewhere around 285 kph (probably around 300-305 kph indicated). So it don't really make a lot of sense if it were true.
Superkaos runs an '02 (turboed) and regularly gets her off the clock at 220 mph indicated. From memory he got around the speed limiter problem by wiring in a resistor rather than purchasing an aftermarket ECM (which doesn't necessarily resolve the speed limiter problem... I'm pretty sure the PCIIIr is speed limited). If you want details, drop him a line at superkaos@superkaos.com and the other person who would probably be able to help is motorhead at themotorhead@aol.com.
Either way, at those speeds be BLOODY careful... you really should save that kind of stuff for track days.
Death can come mighty quickly once you pass the 180 on a public road. <i></i>
Re: 2002 model speed limiting - Ozibusa - 07-05-2002
Woops... seems you folks have been here before... see pub18.ezboard.com/faustralianhayabusaclubfrm11.showMessage?topicID=42.topic <i></i>
Re: 2002 model speed limiting - demeester - 07-05-2002
A coupl'a guys who I ride with, who ride blades, reckon they also get a higher top speed out of fifth than sixth. They up it to sixth, the revs, drop and the speed just backs off.
Someone correct me if this is wrong, but the torque line (which is fairly flat for the busa) must still be rising for this phenomenon to occur - i.e. dropping to lower revs, they have dropped to a spot on the line with lower torque - and with insufficient power to overcome air resistance as effectively as when they were in fifth? Correct? Anybody? Tell me to blow it out my arse if I am totally off the tracks, with either terminology or facts... <i></i>
speed limited by power - Beestroyer - 07-05-2002
I certainly had that problem on my 1980 cb250 (I think I got my higest speed in about 4th at 110k's!). Of course that would happen on a Blade! Its a Honda! But im sure the bus has enough power to pull in top. <i></i>
speed limiting - col - 07-05-2002
G'day All,
The speed limiting is done through the GPS. It's a simple modification to right this wrong. There isn't too much magic involved, just some common sence.
Regards Col <i></i>
Re: speed limiting - demeester - 08-05-2002
Nice to hear from you Col, and glad that you are finally on the mend.
Just an addition to my last post up there, as I lay in bed last night, drifting off, and thinking about it, I realised that I was wrong, and the phenomena could also occur with a flat or only slightly dropping torque line. Since power is a measure of torque at a given engine speed, (yes or no??) then dropping the engine speed (by changing gears in this case) but with torque not increasing, we have less "power", and we are at this time travelling at a speed where factors such as wind resistance are significant. Am I on the right track? <i></i>
speed limiting - Beestroyer - 08-05-2002
Remember demeester, that the curve drops off up near redline, so changing up a gear will put you at a higher powered rpm. maybe? <i></i>
Re: speed limiting - Bone - 09-05-2002
Richard that seems to make sense as producing the same amount of torque at a higher RPM gives a greater horsepower ie..horsepower=the rate at which the work is carried out.
Graeme.
<i></i>
Re: speed limiting - demeester - 09-05-2002
Beestroyer - but if the curve only drops a little, and you drop a coupl'a'thou revs... If you drop to a point where there is even more power, then you should (given more power and a better gearing ratio) be able to go faster. But, if you have the same power, then the bike may or may not be able to go faster, depending on all the drag factors. <i></i>