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post #1 of 101 (permalink) Old 09-10-2013, 02:56 PM Thread Starter
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Default Judge top speed

How fast you guys get your judge up to? Mine is all stock and i was breathing on 115 mph maybe 114.just stopped pulling, drag limited

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post #2 of 101 (permalink) Old 09-10-2013, 03:12 PM
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How fast you guys get your judge up to? Mine is all stock and i was breathing on 115 mph maybe 114.just stopped pulling, drag limited
Were you riding in a 40 mph head wind or something? That seems low.

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post #3 of 101 (permalink) Old 09-10-2013, 03:35 PM
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Were you riding in a 40 mph head wind or something? That seems low.
I don't think so. My bike is turning 3k rpm at 80 mph in 6th gear. If the bike is relatively stock it will make power to about 4.5k rpm so I would expect at best about 120 mph.

Throw in the fact that, IIRC, wind resistance is not proportional to velocity, but proportional to it's square. So even if the bike is still making power, it may not be enough to overcome the force of the wind resistance above 100 mph. 115 mph sounds about right to me.




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post #4 of 101 (permalink) Old 09-10-2013, 05:09 PM
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I don't think so. My bike is turning 3k rpm at 80 mph in 6th gear. If the bike is relatively stock it will make power to about 4.5k rpm so I would expect at best about 120 mph.

Throw in the fact that, IIRC, wind resistance is not proportional to velocity, but proportional to it's square. So even if the bike is still making power, it may not be enough to overcome the force of the wind resistance above 100 mph. 115 mph sounds about right to me.
You're on a different bike, different weight and different cams. Maybe it means nothing. I never rode a judge. I've not topped my KP out but i did hit 110 before letting off and she was still pulling at 110. No way was she going to top out at 115

I'd guess 125...though I don't think I'll ever find out.

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https://www.youtube.com/watch?v=KOZw...ature=youtu.be

2014 Victory Cross Country Tour - Two Tone Sonic Blue and Silver

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post #5 of 101 (permalink) Old 09-10-2013, 05:43 PM
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post #6 of 101 (permalink) Old 09-10-2013, 05:46 PM
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You're on a different bike, different weight and different cams. Maybe it means nothing.
It means it gets there a tad faster. 4.5k rpm x gear ratio = some fixed speed. Doesn't matter how peppy the engine is.




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post #7 of 101 (permalink) Old 09-10-2013, 06:15 PM
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It means it gets there a tad faster. 4.5k rpm x gear ratio = some fixed speed. Doesn't matter how peppy the engine is.
Same top speed, doesn't matter how peppy the engine is eh? Lets say your bike is bone stock with your stock cam. Lets also say, that I have torque tube, PCV, timing wheel, performance exhaust and just for giggles lets say I'm putting down 15 HP more than you (but I left the rev limiter alone). Now we're both riding into a strong wind. Still the same? Nope. My 15 extra HP allowed me to top out but because yours wasn't as "peppy" as mine, you weren't able to reach your top speed. No two bikes are the same. Each bike will have a different weight rider, different weight bike, different aerodynamics. Your bike might not be "peppy" enough to tach out under those conditions while mine may be? That's real world vs perfect world. Your calculator forgot to calculate wind and weight vs HP

The question to the OP would be, what was your RPMs @ 115 MPH

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2014 Victory Cross Country Tour - Two Tone Sonic Blue and Silver

PCV 6,500 rev limit, Lloydz VM1-DR Cams, Lloydz Hi Flow Filter, Atom Bomb exhaust, Lloydz ATS +4, Lloydz 1/4 Throttle. 111 HP / 116 TQ
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post #8 of 101 (permalink) Old 09-10-2013, 07:17 PM
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My bike is turning 3k rpm at 80 mph in 6th gear. If the bike is relatively stock it will make power to about 4.5k rpm so I would expect at best about 120 mph
My front pulley is 2 teeth smaller than stock and my bike goes through the traps at the end of the 1/4 mile at a true 115 mph in 4th gear.... just sayin'

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post #9 of 101 (permalink) Old 09-10-2013, 07:24 PM
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Same top speed, doesn't matter how peppy the engine is eh?
Saddlebag means no matter how much power an engine makes, 4.5K RPM X a specific gear ratio = a specific speed. More power just gets you to that specific combination in a shorter elapsed time. He didn't mean top speed.



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post #10 of 101 (permalink) Old 09-10-2013, 07:32 PM
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Originally Posted by Rebel Biker View Post
Same top speed, doesn't matter how peppy the engine is eh? Lets say your bike is bone stock with your stock cam. Lets also say, that I have torque tube, PCV, timing wheel, performance exhaust and just for giggles lets say I'm putting down 15 HP more than you (but I left the rev limiter alone). Now we're both riding into a strong wind. Still the same? Nope. My 15 extra HP allowed me to top out but because yours wasn't as "peppy" as mine, you weren't able to reach your top speed. No two bikes are the same. Each bike will have a different weight rider, different weight bike, different aerodynamics. Your bike might not be "peppy" enough to tach out under those conditions while mine may be? That's real world vs perfect world. Your calculator forgot to calculate wind and weight vs HP

The question to the OP would be, what was your RPMs @ 115 MPH
Forgot to calculate? I just esplained it two posts or so ago. Sure there are many factors (weight, aerodynamics, peak power rpm etc), but they ain't gonna change that top end speed much unless you do something like put a Lloyd's cam in it and bump the rev limiter up. Your cam ain't that much hotter, they both put out about the same max power. Again, yours would just get there faster as it's lighter and producing more power throughout the rev range:





I've gotten mine to 101 per GPS 111 speedo. Seemed adequately fast for what it is to me. It seemed to have a little more in reserve, but I get too paranoid that I'm going to have to contribute heavily to the Policemen's ball.




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