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Author Topic: Top speed estimator  (Read 6460 times)

Offline BRIT

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Top speed estimator
« on: December 06, 2005, 01:25:27 PM »
Anyone have a link to that cute little program where you enter your final gearing and tire circumference along with hp and it will spit out an estimated top speed??
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Offline LupinIV

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Re: Top speed estimator
« Reply #1 on: December 06, 2005, 01:42:48 PM »
I have asked some simila questions and Nomrlz forwarded this to me.
It is not related to HP but you can probalby find a way to relate to a power curve.

Cheers :D

GEAR RATIO =  SPEED IN GEARS

Gearing   1st   2nd   3rd   4th   5th   6th

16/39   77   104   132   157   178   194
16/40   75   101   129   153   173   189
16/41   73   99   126   150   169   184
16/42   72   97   123   146   165   180
16/43   70   95   120   143   161   176

17/39   82   111   141   167   189   206
17/40   80   108   137   163   184   201
17/41   78   105   134   159   180   196
17/42   76   103   131   155   176   191
17/43   74   100   128   152   171   187

18/39   87   117   149   177   200   218
18/40   85   114   145   173   195   212
18/41   83   112   142   168   190   207
18/42   81   109   138   164   186   202
18/43   79   106   135   161   182   198

19/39   92   124   157   187   211   230
19/40   89   121   153   182   206   224
19/41   87   118   150   178   201   219
19/42   85   115   146   173   196   214
19/43   83   112   143   170   192   209
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Offline Twisted

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Re: Top speed estimator
« Reply #2 on: December 06, 2005, 02:15:45 PM »
Quote from: BRIT on December 06, 2005, 01:25:27 PM
Anyone have a link to that cute little program where you enter your final gearing and tire circumference along with hp and it will spit out an estimated top speed??

try postmaster@11k he got all that stuff..
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Offline Campbell

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Re: Top speed estimator
« Reply #3 on: December 06, 2005, 04:30:09 PM »
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Offline Busa@11K

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Re: Top speed estimator
« Reply #4 on: December 06, 2005, 08:06:52 PM »
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Offline rustman

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Re: Top speed estimator
« Reply #5 on: December 06, 2005, 09:19:48 PM »
Save that sucker to your local machine.  It's a great tool.   :D
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Yeah, it made 500 hp at 32 psi.
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Mav

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Re: Top speed estimator
« Reply #6 on: December 06, 2005, 10:25:12 PM »
Quote from: rustman on December 06, 2005, 09:19:48 PM
Save that sucker to your local machine.  It's a great tool.   :D

I did even before I read ya post. Redbusa gets some soul for that!
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Offline Noumenon

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Re: Top speed estimator
« Reply #7 on: December 07, 2005, 09:05:00 AM »
Thanks Mav :lol:. Glad some can make use of it. Thanks Busa@11k for catching excel error :thumb:
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Mav

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Re: Top speed estimator
« Reply #8 on: December 07, 2005, 09:48:30 AM »
What error? I noticed the gear ratios don't change even though I change tire and gears. Aren't they suppose to change
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Offline Commuta_Busa

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Re: Top speed estimator
« Reply #9 on: December 07, 2005, 09:53:07 AM »
redbusa - your file saves a ton of time and it's always been a great reference point for me! kudos!  :beechug:

I just hope people realize this is a tool not the answer... remember that CDa and frontal area are calculated strictly for the bike not bike and rider.
« Last Edit: December 07, 2005, 09:56:45 AM by Commuta_Busa »
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Offline Noumenon

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Re: Top speed estimator
« Reply #10 on: December 07, 2005, 11:29:51 AM »
Those values are with a rider in tucked position. Your correct that there are many reality variables not taken into consideration, it's just a approximation calc.

Mav, the error was an obscure calc error in the excel spreadsheet that only Busa@11k could find :lol:. The gear speed calc had no problem.
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Offline flashracer

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Re: Top speed estimator
« Reply #11 on: December 07, 2005, 09:44:10 PM »
I USED THE CALCULATOR TO HELP FIGURE MY GEARING FOR 1/4 MILE. 17/45 WORKS GREAT FOR ME
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Offline TrickTom1

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Re: Top speed estimator
« Reply #12 on: December 28, 2005, 05:16:57 PM »
 :thumb: COOL LINK
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