When on road(not track) what revs should you change gears? - Honda Motorcycles - FireBlades.org
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post #1 of 23 Old 11-12-2009, 6:41 AM Thread Starter
 
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When on road(not track) what revs should you change gears?

I mean just riding around the city Ive been changing up between 3-5k, does this seem about right?
Cheers,
TIM
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post #2 of 23 Old 11-12-2009, 6:59 AM
 
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Re: When on road(not track) what revs should you change gears?

Q: when do i change gears?

A: whenever i feel like it.

but offhand, 3k sounds like a bare minimum.

Last edited by regener8ed; 11-12-2009 at 8:39 AM.
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post #3 of 23 Old 11-12-2009, 8:02 AM
 
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Re: When on road(not track) what revs should you change gears?

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Originally Posted by reenandpert View Post
I mean just riding around the city Ive been changing up between 3-5k, does this seem about right?
Cheers,
TIM
Sounds way low. I tend to consider 4K a minimum and shift at 6-7K unless I am being a bit more aggresive. However a lot depends on what I am doing. For instance on a country 4 lane or interstate I might run it up to speed in third and go all the way to sixth to cruise. On a twisty hill I might run 8-9K in first. However the acceleration below 4K is very low, so I like to keep it above that so I can decelerate or accelerate to avoid issues.

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post #4 of 23 Old 11-12-2009, 8:30 AM
 
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Re: When on road(not track) what revs should you change gears?

depends on so many things - sometime down low, sometime up hi.

How long is a peice of string?
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post #5 of 23 Old 11-12-2009, 8:50 AM
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Re: When on road(not track) what revs should you change gears?

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Originally Posted by reenandpert View Post
I mean just riding around the city Ive been changing up between 3-5k, does this seem about right?
Cheers,
TIM
I would think 3000RPM is too low.
Shift when you're far enough into the power to not drop below it in the higher gear.
I rarely get above third gear around town on any of my bikes or cars. If I can get up to about 80kph I'll grab fourth. I never use sixth on the bikes or fifth in the cars unless I'm out on a highway somewhere.

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post #6 of 23 Old 11-12-2009, 10:15 AM
 
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Re: When on road(not track) what revs should you change gears?

14K or 5K.... it's really whatever makes you comfortable for the conditions you are riding in... in the end it's your bike and your life out there... be safe and enjoy the ride....
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post #7 of 23 Old 11-12-2009, 11:02 AM
 
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Re: When on road(not track) what revs should you change gears?

As the saying goes .....if it sounds right do it.. 4,000-5,000 relaxed riding, 7-9,000 most other and fill your boots when raggin it.Just listen to the bike ...she will tell you what she wants becomes second nature after a bit.
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post #8 of 23 Old 11-12-2009, 7:46 PM Thread Starter
 
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Re: When on road(not track) what revs should you change gears?

Good answers.
Thanks for that.
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post #9 of 23 Old 11-12-2009, 10:04 PM
 
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Re: When on road(not track) what revs should you change gears?

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Originally Posted by bladeracer View Post
I would think 3000RPM is too low.
Shift when you're far enough into the power to not drop below it in the higher gear.
That only happens if you shift at revs above max power.
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post #10 of 23 Old 11-12-2009, 10:09 PM
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Re: When on road(not track) what revs should you change gears?

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That only happens if you shift at revs above max power.
That would perhaps be so if I'd been talking about shifting at _peak_ power which I clearly wasn't.
If it starts making usable power at 4000RPM and you shift from first to second at 4500 you'll drop below the 4000RPM point and out of the usable power. If usable power starts at 4000RPM start shifting around 5500RPM. As you go up the gearbox the ratios get closer together so you can shift sooner.

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post #11 of 23 Old 11-12-2009, 10:19 PM
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Re: When on road(not track) what revs should you change gears?

Using a dyno graph as an example.
2004 Cbr1000rr Dyno Hptq.Gif Photo

At around 3800RPM you can see a nice lump of power and torque. Drop below there and twisting the throttle will reward you with some lag before you get smooth acceleration. If you lose 1500RPM shifting to second do it after you've passed 5300RPM so you can cruise just on the bottom of the power for instant throttle response. By the time you get to top gear you're probably only dropping 500RPM from fifth.
Attached Thumbnails
146_0404_z+2004_cbr1000rr_dyno+hptq.jpg‎  

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post #12 of 23 Old 11-13-2009, 2:28 AM
 
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Re: When on road(not track) what revs should you change gears?

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That would perhaps be so if I'd been talking about shifting at _peak_ power which I clearly wasn't.
Ok - what was the "it" you were talking about??

Shift when you're far enough into the power to not drop below it in the higher gear.

I read the sentence to mean "it" was the power in the current gear (seing that power was the last thing mentioned in the sentance)
In which case you would have to be above max revs.

Im guessing from your next posts that "it" is some unspecified min amount of power.
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post #13 of 23 Old 11-13-2009, 4:13 AM
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Re: When on road(not track) what revs should you change gears?

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Originally Posted by dicknose View Post
Ok - what was the "it" you were talking about??

Shift when you're far enough into the power to not drop below it in the higher gear.

I read the sentence to mean "it" was the power in the current gear (seing that power was the last thing mentioned in the sentance)
In which case you would have to be above max revs.

Im guessing from your next posts that "it" is some unspecified min amount of power.
"It" refers to the power referred to earlier in the sentence - I think it's a standard English usage of the word.
I can't see how you have a problem understanding it. Why would max revs or max power have anything to do with what I stated?

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post #14 of 23 Old 11-17-2009, 4:29 AM
 
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Re: When on road(not track) what revs should you change gears?

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Originally Posted by bladeracer View Post
"It" refers to the power referred to earlier in the sentence - I think it's a standard English usage of the word.
I can't see how you have a problem understanding it. Why would max revs or max power have anything to do with what I stated?
Because if "it" means the previous power, then what you are saying is

shift when you're far enough into the power to not drop below the previously mentioned power in the higher gear.

Im not quite sure what the previous power is? The power you have in the current gear?
That still seems to me to say you want the power after the shift to be at least equal to before the shift.
The only time you can shift gear and the power in the higher gear is equal to the power in the lower gear is when you shift after max power.

Maybe we are on completely different wavelengths on this.
Im an engineer and use the term power probably a bit more technically than most.
But your sentence seems very ambiguous.
The "it" references a power that isnt clear, its either self referential (power after shift is not less than before the shift) or its unspecified (power that after shift that not below some other power which itself isnt specified)
I took the meaning as self referential - which implies shifting after max power.

walks away dazed - amazing how such a simple sentence can cause so much confusion!
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post #15 of 23 Old 11-17-2009, 5:48 AM
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Re: When on road(not track) what revs should you change gears?

My usage of "power" does not refer to a fixed point in the rev range.
For your reading of it perhaps instead of "below" I should have used "out of" or "off the bottom of" the power?

"I won't forget that ride for a while. Maybe you're right. Living fast might be worth the final crash. Maybe that's the secret you fliers know." - Flight of the Intruder
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