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7.5 FDR Gearing

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mark

Post subject: 7.5 FDR Gearing

Posted: Wed Dec 26, 2007 13:48:11

Joined: Thu May 12, 2005 22:12:40
Posts: 129
Location: leicestershire

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Hurrle

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Posted: Wed Dec 26, 2007 14:50:05

Joined: Sun Apr 16, 2006 17:48:15
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mark

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Posted: Wed Dec 26, 2007 15:13:55

Joined: Thu May 12, 2005 22:12:40
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Hurrle

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Posted: Wed Dec 26, 2007 15:20:08

Joined: Sun Apr 16, 2006 17:48:15
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Location: Norway

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Hurricane '007

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Posted: Wed Dec 26, 2007 15:23:17

Joined: Fri Aug 24, 2007 11:35:56
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Location: Germany

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mark

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Posted: Wed Dec 26, 2007 16:59:00

Joined: Thu May 12, 2005 22:12:40
Posts: 129
Location: leicestershire

thanks Hurricane '007,i run a 19 stock,our track sound the same as yours,
i will have a look at the chart(thanks Hurrle)and aim for 6.0 6.2
mark

edit,iv just looked at the chart and it says to get 6.05 i need a 33 pinion :shock:

,is that right,if so i was a bit out on the 18 :oops:

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Hurricane '007

Post subject:

Posted: Wed Dec 26, 2007 17:47:06

Joined: Fri Aug 24, 2007 11:35:56
Posts: 119
Location: Germany

No, a 33 teeth pinion can't be right - rather 23 teeth. When you use the standard 48 pitch 84 teeth spur gear you will need a 24 teeth pinion to reach 5,95, a 23 to reach 6,21...

I would advise you not to gear the car too low for the beginning. Start with a 21t. pinion (84t. spur gear) to get a gear reduction of 6,80 - then slowly lower it up to 6,5/6,2 maximumely with a 19turn motor at such a race track.

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mark

Post subject:

Posted: Wed Dec 26, 2007 18:07:37

Joined: Thu May 12, 2005 22:12:40
Posts: 129
Location: leicestershire

thanks Hurricane '007 for your time,could you tell me if the chart on the thread is right as that was were i got 33 makes 6.05 :shock:

or am i reading it wrong

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Hurrle

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Posted: Wed Dec 26, 2007 18:21:53

Joined: Sun Apr 16, 2006 17:48:15
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Hurricane '007

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Posted: Wed Dec 26, 2007 19:08:23

Joined: Fri Aug 24, 2007 11:35:56
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mark

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Posted: Wed Dec 26, 2007 19:37:06

Joined: Thu May 12, 2005 22:12:40
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Nes

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Posted: Thu Dec 27, 2007 17:27:03

Joined: Sat Sep 15, 2007 11:57:23
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Location: Goffs oak

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mark

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Posted: Thu Dec 27, 2007 17:50:42

Joined: Thu May 12, 2005 22:12:40
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Nes

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Posted: Thu Dec 27, 2007 21:28:25

Joined: Sat Sep 15, 2007 11:57:23
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Hurricane '007

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Posted: Thu Dec 27, 2007 23:56:13

Joined: Fri Aug 24, 2007 11:35:56
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Hurrle

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Posted: Fri Dec 28, 2007 00:08:30

Joined: Sun Apr 16, 2006 17:48:15
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mark

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Posted: Fri Dec 28, 2007 01:20:48

Joined: Thu May 12, 2005 22:12:40
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Hurrle

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Posted: Fri Dec 28, 2007 01:30:40

Joined: Sun Apr 16, 2006 17:48:15
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Hurricane '007

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Posted: Fri Dec 28, 2007 04:00:16

Joined: Fri Aug 24, 2007 11:35:56
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YELLOWSHARK

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Posted: Fri Dec 28, 2007 11:20:09

Joined: Thu Jun 07, 2007 15:05:49
Posts: 849
Location: Poole, UK

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