| Author |
Message |
    
Diablobrian
| | Posted on Monday, December 19, 2005 - 06:47 pm: | 
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you would have to split the cases to change the gears. If you wanted to change the 5th gear out I would talk to Jim's or Baker about it.
The reason gear ratios get tighter as you go up through the gears: The drag (resistance to acceleration) increases by the square of acceleration.
if it were to take 1hp to go 1mph it would take 4hp to go 2mph and 9hp to go 3mph.
In reality it isn't quite as simple as that, but it does demonstrate the principle. The gear ratios are tighter to offset this resistance and maintain mechanical advantage as your speed increases. If my post is less than coherent please ask for clarification.
(Message edited by diablobrian on December 19, 2005) |
Keys
| | Posted on Monday, December 19, 2005 - 07:01 pm: |
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Great explanation. sounds like switching 5th will have drawbacks as well according to the principle you state. What does "split the cases" mean? sounds expensive |
Diablobrian
| | Posted on Monday, December 19, 2005 - 07:06 pm: |
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Splitting the cases means tearing the motor down as far as it will go.
The bottom (main case) of your motor has a seam that runs from front to back.
Anything that involves splitting the cases is a Major ordeal.
If you are going that far it would be wise to do any and all internal mods
you intend to do to your motor (big bore, longer stroke, etc.) at that time.
And yes indeed it is expensive to have it done.
(Message edited by diablobrian on December 19, 2005) |
Buellgirlie
| | Posted on Monday, December 19, 2005 - 11:56 pm: |
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Steve-O.....that wasn't the same time. you were chasing me down interstate 4 from Daytona to Orlando - and i was going fast because it was so freakin' cold, not to test or prove anything that night, i just wanted to get it over with 
the top speed day was when i started off on my little 600 mile adventure around FL *after* Daytona - it was between Kissimmee and Yeehaw Junction
incidentally - i was just going PM you and Frankster - i'll be down in FL dec 29 to jan 2, prob flying into orlando, and out of tampa. you and frank got any trouble for me to get into?
PM me back.
D |
Moe03xb
| | Posted on Tuesday, December 20, 2005 - 11:55 am: |
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125 03 xb9 and I was passed as if I was on a bicycle by Benz SLR/SLK (?). He had to be doing 150+. In my defense I wasn't topped out and trying for more would have been a waste of time. Is it just me, or does it take everyone a long time (road) to reach those speeds? I can get to 100 pretty easily, after that though it's all sit and wait. |
Buellgirlie
| | Posted on Tuesday, December 20, 2005 - 05:44 pm: |
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agree w/you moe. it gets to 90-100 really quick, then its a struggle past 100.
D |
Diablobrian
| | Posted on Tuesday, December 20, 2005 - 06:54 pm: |
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resistance goes up at the square of speed. |
Buellgirlie
| | Posted on Tuesday, December 20, 2005 - 09:55 pm: |
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yes and no.....the power band of my buell just isnt at that speed. my red bike goes and goes, even over 100, it just keeps pulling like a truck, any speed any gear, til i plead mercy and back off
D |
Diablobrian
| | Posted on Tuesday, December 20, 2005 - 10:09 pm: |
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Your Duc is fully faired and therefore more aerodynamic. that makes a big difference in coefficient of Drag. |
Nasty73z
| | Posted on Wednesday, December 21, 2005 - 01:22 am: |
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146 on the limiter in top of fifth on my XB12s.
212 mph on a turbo Busa verified by the dash-mounted gps. Changed my life. |
Cmm213
| | Posted on Thursday, December 22, 2005 - 09:17 pm: |
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I have a 9s with the regular mods and it still pulls hard over 100. I usually am glued to the air box cover to stay out of the wind. |
Hammer71
| | Posted on Saturday, December 24, 2005 - 12:41 pm: |
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142 indicated on New York State Police radar (flat level ground on I-84) slight tail wind. 3 passes and that was the best pass 138 was lowest. |
Buellin_ri
| | Posted on Saturday, December 24, 2005 - 12:46 pm: |
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What a fine use of police equipment!!
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