How fast have you had your ST?

I've got my bikes GPS at an indicated 645km/h...................................





















I did say my bikes GPS .....nothing about my ST doing that speed...(Had the GPS in a jet plane):banghead::banghead::banghead::banghead:
 
STandoutST1300 said:
My answer: TOO
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+1

18 pages of bragging and this is the first entry to actually make me LAUGH!

Thank-you!

<<Pssst, rumor has it mine has seen 134 and usually bangs 100 on at some time on most runs just because. But that's just a rumor. I hear it's always rock-steady too, topbox and all. Top speed on the Zumo though is 561mph. It was on a cross country trip, west Texas I believe, about 34,000 feet up. :) >>
 
Pelagic said:
+1

18 pages of bragging and this is the first entry to actually make me LAUGH!

Thank-you!

<<Pssst, rumor has it mine has seen 134 and usually bangs 100 on at some time on most runs just because. But that's just a rumor. I hear it's always rock-steady too, topbox and all. Top speed on the Zumo though is 561mph. It was on a cross country trip, west Texas I believe, about 34,000 feet up. :) >>
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561 mph = 902.84 kilometers per hour and that's really fast....OK you win :grin::grin::grin:
 
BakerBoy said:
:eek: :yikes: :bigeyes: :holy crap: :yowza: :eek:4:

[Serious Rant] In engineering terms, loads on key parts of the bike go up as the square of the speed. By 'loads', I mean drag, hoop stress in the tires & rims, stress on engine & drivetrain parts, ... etc. The following table shows such loads as a function of speed, relative to 60 mph.

Speed, Loads
60, 100%
70, 136%
80, 178%
90, 225%
100, 278%
110, 336%
120, 400%
130, 469%
140, 544%
150, 625%

Just a quick burst up to 90 that we each seem to find on our speedo at times more than doubles the load on key parts. From 90 to 130, it more than doubles again. Scary stuff.

It only takes a slight imperfection in a tire and you are done with life at such high speeds. If a piece of fairing rips off and the bike no longer has symmetric loading...done. A rim cracks...done. A bearing siezes...done. One of many engine parts gives out...done. A tooth on the driveline failes...done. You hit something on the road...done. The road is damaged...done. Someone misjudges your speed and pulls in front of you...done.

I implore you to slow down. [/Serious Rant]
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Thanks for the useful info, however we need to know the source and what are the typical stress levels bike parts are designed for.Thanks in advance.
 
Resistance goes up by the square of the speed, which is not necessary the same as stress. To double the speed you need to square the horsepower because of the resistance of wind, friction, etc. We have all knocked the mirror loose, and it doesn't take much, but it doesn't come off with speed because the shape dynamics. It would come off at 20 mph if the stress was squared. The stress of things like gears is less than those of things like pistons that have to stop and change directions when traveling at 8000 rpm.

The speedo on the ST is fast by almost 10%. According to my GPS I reach top speed of 140 mph at the redline of 8000 rpm. You have to over rev the engine to get over 140, which is nearly impossible because the rev limiter starts reducing power.
 
longerone said:
Thanks for the useful info, however we need to know the source and what are the typical stress levels bike parts are designed for.Thanks in advance.
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...multiple engineering degrees and lots of design experience of high speed rotating parts immersed in high speed fluids, Longerone.

It seems that some who read my 'yowza' post thinks that I was claiming that the design speed of the bike is 60 mph... that was not the intent as I do not know what the design speed is. The information is presented relative to 60 mph, and means nothing more than relative to 60 mph. It was written for the purpose of causing readers to think that stress [risk] increases more than just linear with speed and to be less than casual about trying to find the limits.
:)

stjrs said:
Resistance goes up by the square of the speed, which is not necessary the same as stress. To double the speed you need to square the horsepower because of the resistance of wind, friction, etc. We have all knocked the mirror loose, and it doesn't take much, but it doesn't come off with speed because the shape dynamics. It would come off at 20 mph if the stress was squared. The stress of things like gears is less than those of things like pistons that have to stop and change directions when traveling at 8000 rpm.
...
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Drag resistance goes up with the square of the speed so tupperware sees loads (and hence stress) increase with the square of the speed. But what is the design rating of the components? I don't know.

But what if a panel or cover on my bike is damaged and does come off at 1xx mph? Aerodynamic loads are potentially huge (having a sudden aero load direction and magnitude atypical of what is experienced by the bike as it goes straight). That at least would be a major distraction to any rider even if no significant aero load changes were the result.

Consider that at, say 60 mph, when we encounter a gust of wind from the side the bike moves significantly to the side and requires quick response. I personally don't want to experience a similar, atypical aero drag load change on the bike at 1xx mph.

As mentioned, key power components like pistons see remarkably more stress. But the parts that concern me the most are the rims... Being thin-wall cylinders, stress in those does go up with the square of the RPM. Hitting a bit of road debris or pothole at high speed may be all it takes to overstress and fail the rim.

We each have to choose our level of risk...and hopefully each that reads this will consider that choice while being a little more informed. ;)
 
135 MPH according to the Zumo. I think it will go even faster but don't want to find out. ;)
 
BakerBoy said:
...multiple engineering degrees and lots of design experience of high speed rotating parts immersed in high speed fluids, Longerone.

It seems that some who read my 'yowza' post thinks that I was claiming that the design speed of the bike is 60 mph... that was not the intent as I do not know what the design speed is. The information is presented relative to 60 mph, and means nothing more than relative to 60 mph. It was written for the purpose of causing readers to think that stress [risk] increases more than just linear with speed and to be less than casual about trying to find the limits.
:)


Drag resistance goes up with the square of the speed so tupperware sees loads (and hence stress) increase with the square of the speed. But what is the design rating of the components? I don't know.

But what if a panel or cover on my bike is damaged and does come off at 1xx mph? Aerodynamic loads are potentially huge (having a sudden aero load direction and magnitude atypical of what is experienced by the bike as it goes straight). That at least would be a major distraction to any rider even if no significant aero load changes were the result.

Consider that at, say 60 mph, when we encounter a gust of wind from the side the bike moves significantly to the side and requires quick response. I personally don't want to experience a similar, atypical aero drag load change on the bike at 1xx mph.

As mentioned, key power components like pistons see remarkably more stress. But the parts that concern me the most are the rims... Being thin-wall cylinders, stress in those does go up with the square of the RPM. Hitting a bit of road debris or pothole at high speed may be all it takes to overstress and fail the rim.

We each have to choose our level of risk...and hopefully each that reads this will consider that choice while being a little more informed. ;)
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I think that Honda has an engineer or two to check hoop stress and the like before releasing a motorcycle for sale. Personally I believe the driver on the cell phone or the distracted soccer mom in traffic at 40 mph poses a greater risk to me than when I touch a buck forty on good tires on a deserted open stretch. YMMV.
 
Passing some traffic that was doing 80 and I brought it up to 100. My speedo has a SpeedoHealer on it so I know it was accurate. The GPS was lagging just about 1-2 seconds and as soon as I got to 100 I backed off. The GPS said 97.5 but it was still trying to catch up to the actual speed. The nice thing is my wife didn't know we were at that speed until I told her, then of course I got smacked. I was very impressed with how it handled with the CalSci windshield in a position that allows me to look through the windshield.

Scott
 
After bringing it back from TN (10 days ago), I might have hit 2 mph as I got her into the garage before the left shock bottomed out (broken left spring and shredded seal). I personally hit the garage floor at about 5mph after sliding through the fork oil. Good news is a progressive kit/seal kit/new oil/lotsa cleaning later she is about ready for her maiden voyage. Now if I can just get the UPS man to bring me the new final drive splines (shredded). A little more love and a final drive installed and STephanie should take me well above my current 5mph best!:D
 
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