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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: Speedo drive gears
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Fri, 05 December 2003 03:27
 
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| Norbie wrote on Fri, 05 December 2003 14:05 |
That's why I'm trying to find the actual formula to calculate the gear sizes you need.
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oohh, you want actual numbers  yayy...
okay
find the rolling diameter of your tyres in m. (RD?)
find number of revolutions per km of the tyres (TR?),
TR=1000/RD
then multiply by the diff ratio (DR) to get driveshaft revs/km (DSR)
DSR=TR x DR
the speedo driven gear will be running at driveshaft revs.
now, to find speedo cable speed (SCS) you need to facter in the worm gear teeth (WGT) and driven gear teeth (DGT)
SCS = (DSR x WGT)/DGT
the SCS will be in revs/km, which should be printed on your speedo.
hth 
Cya, Stewart
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| | Subject | Poster | Date |
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Speedo drive gears
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Norbie | Fri, 05 December 2003 00:26 |
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Re: Speedo drive gears
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gianttomato | Fri, 05 December 2003 02:03 |
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Re: Speedo drive gears
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Scorpion | Fri, 05 December 2003 02:34 |
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Re: Speedo drive gears
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CrUZsida | Fri, 05 December 2003 02:36 |
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Re: Speedo drive gears
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oldcorollas | Fri, 05 December 2003 02:59 |
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Re: Speedo drive gears
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Norbie | Fri, 05 December 2003 03:05 |
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Re: Speedo drive gears
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oldcorollas | Fri, 05 December 2003 03:27 |
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Re: Speedo drive gears
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CrUZsida | Fri, 05 December 2003 03:18 |
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Re: Speedo drive gears
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oldcorollas | Fri, 05 December 2003 03:38 |
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Re: Speedo drive gears
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CrUZsida | Fri, 05 December 2003 03:44 |
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Re: Speedo drive gears
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gianttomato | Fri, 05 December 2003 03:55 |
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Re: Speedo drive gears
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CrUZsida | Fri, 05 December 2003 04:04 |
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Re: Speedo drive gears
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oldcorollas | Fri, 05 December 2003 04:18 |
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Re: Speedo drive gears
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gianttomato | Fri, 05 December 2003 04:38 |
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Re: Speedo drive gears
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CrUZsida | Fri, 05 December 2003 05:48 |
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Re: Speedo drive gears
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Norbie | Fri, 05 December 2003 03:48 |
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Re: Speedo drive gears
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CrUZsida | Fri, 05 December 2003 03:54 |
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Re: Speedo drive gears
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oldcorollas | Fri, 05 December 2003 04:04 |
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Re: Speedo drive gears
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Bugman | Fri, 05 December 2003 03:58 |
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Re: Speedo drive gears
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oldcorollas | Fri, 05 December 2003 05:04 |
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Re: Speedo drive gears
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Norbie | Fri, 05 December 2003 05:19 |
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Re: Speedo drive gears
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gianttomato | Fri, 05 December 2003 05:31 |
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Re: Speedo drive gears
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Norbie | Fri, 05 December 2003 05:34 |
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Re: Speedo drive gears
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gianttomato | Fri, 05 December 2003 05:46 |
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Re: Speedo drive gears
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Norbie | Fri, 05 December 2003 06:20 |
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Re: Speedo drive gears
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CrUZsida | Fri, 05 December 2003 05:52 |
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Re: Speedo drive gears
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Norbie | Fri, 05 December 2003 06:27 |
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Re: Speedo drive gears
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CrUZsida | Fri, 05 December 2003 06:32 |
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Re: Speedo drive gears
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supra1jz | Fri, 05 December 2003 08:35 |
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Re: Speedo drive gears
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Jayem | Fri, 05 December 2003 23:27 |
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Re: Speedo drive gears
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jase | Sat, 06 December 2003 11:30 |
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Re: Speedo drive gears
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justcallmefrank | Sat, 06 December 2003 11:39 |
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Re: Speedo drive gears
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Norbie | Sat, 06 December 2003 16:03 |
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Re: Speedo drive gears
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Shraka | Sat, 06 December 2003 17:16 |
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Re: Speedo drive gears
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clubagreenie | Sat, 06 December 2003 22:51 |
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Re: Speedo drive gears
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clubagreenie | Sat, 06 December 2003 22:54 |
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Re: Speedo drive gears
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wraith | Fri, 19 December 2003 02:10 |
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Re: Speedo drive gears
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CrUZsida | Fri, 19 December 2003 02:15 |
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Re: Speedo drive gears
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wraith | Fri, 19 December 2003 02:23 |
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Re: Speedo drive gears
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CrUZsida | Fri, 19 December 2003 02:30 |
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Re: Speedo drive gears
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wraith | Fri, 19 December 2003 02:37 |
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Re: Speedo drive gears
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CrUZsida | Fri, 19 December 2003 02:48 |
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Re: Speedo drive gears
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wraith | Fri, 19 December 2003 02:52 |
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Re: Speedo drive gears
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82MKII | Fri, 19 December 2003 12:17 |
