Pat,
No, I said it changes the effective gearing ratio, not the actual gear
ratio. As Adam said, I'm making the case that the effective gearing ratio
changes so "2.957 in 1st with 3.70 rearend rotates the tire at the same
rate as 3.117 in 1st with 3.90 rearend". You put a different rear end in,
you get a different effective ratio in comparison with the stock setup.
Fred
'66 2L with 1600-rear-end - quick off the line
'68 2L with 2000-rear-end - not as quick
'70 1600 with 1600-rear-end - quick off the line
________________________ Reply Separator ______________________
Subject: Re: Roadster gear ratio's
Author: "Patrick P. Castronovo" <slick1@mohaveaz.com>
Date: 2/9/2001 7:27 AM
It changes where the rubber meets the road, not the actual gear ratio of the
gear box. Pat
-----Original Message-----
From: roadster <roadster@rcn.com>
To: Patrick P. Castronovo <slick1@mohaveaz.com>; Fred_Katz@ci.sf.ca.us
<Fred_Katz@ci.sf.ca.us>; datsun-roadsters@autox.team.net
<datsun-roadsters@autox.team.net>; Michael Poorboy
<bitterrootprop@nidlink.com>
Date: Thursday, February 08, 2001 9:41 PM
Subject: Re: Roadster gear ratio's
>Pat,
>
>Nope. Check your figures again. I'm using a 5-speed with a 3.90 rear end.
>When you calculate the ratio between a 3.70 and a 3.90, it changes the
>effective gearing ratios!
>
>Fred
>
>----- Original Message -----
>From: "Patrick P. Castronovo" <slick1@mohaveaz.com>
>To: <Fred_Katz@ci.sf.ca.us>; <datsun-roadsters@autox.team.net>; "Michael
>Poorboy" <bitterrootprop@nidlink.com>
>Sent: Thursday, February 08, 2001 4:55 PM
>Subject: Re: Roadster gear ratio's
>
>
>> You have the gearing wrong. 5 speed:
>>
>> Fred Chilton
>> book
>>
>> 1st 3.117 2.957
>>
>> 2nd 1.958 1.858
>>
>> 3rd 1.382 1.311
>>
>> 4th 1.054 1.000
>>
>> 5th .898 .852
>> Pat
>>
>> -----Original Message-----
>> From: Fred_Katz@ci.sf.ca.us <Fred_Katz@ci.sf.ca.us>
>> To: datsun-roadsters@autox.team.net <datsun-roadsters@autox.team.net>;
>> Michael Poorboy <bitterrootprop@nidlink.com>
>> Date: Thursday, February 08, 2001 2:18 PM
>> Subject: Re: Roadster gear ratio's
>>
>>
>> >Mike,
>> >
>> >So if you have a 1600 rear end 3.9, with a 5-speed trans then you get
the
>> >following?
>> >
>> >5-spd with
>> >1600 Rear end standard : 3.9
>> >
>> >1st Gear : 3.117
>> >2nd Gear : 1.958
>> >3rd Gear: 1.382
>> >4th Gear: 1.054
>> >5th Gear: .898
>> >
>> >And with smaller than stock wheels, that moves the 5-spd values for 1st,
>> >2nd, 5th even closer to the stock 4-spd values for 1st, 2nd, and 4th.
>Very
>> >interesting!
>> >
>> >Fred - So.SF
>> >BADROC
>> >'66 with 2000/5spd.
>> >
>> >___________________ Reply Separator _________________________
>> >>Subject: Roadster gear ratio's
>> >>Author: Michael Poorboy <bitterrootprop@nidlink.com>
>> >>Date: 2/8/2001 12:43 PM
>> >>
>> >>List,
>> >>I found my manual so here are the numbers for the Roadster:
>> >>
>> >>1600:
>> >>
>> >>Rear end standard : 3.9
>> >>
>> >>1st Gear : 3.382
>> >>2nd Gear: 2.013
>> >>3rd Gear : 1.312
>> >>4th Gear : 1.00
>> >>
>> >>
>> >>2000
>> > >Rear end gear standard : 3.70
>> >>
>> >>1st Gear : 2.957
>> >>2nd Gear : 1.858
>> >>3rd Gear: 1.311
>> >>4th Gear: 1.00
>> >>5th Gear: .852
>> >>
>> >>And the calculator link again is :
>> >>
>> >>http://www.geocities.com/z_design_studio/
>> >>
>> >>Thanks,
>> >>Mike
>> >>Nowroc
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