Disco 2 rpm /mph

Just had my transfer box ratios changed in my Defender with some higher
ratio gears from Ashcroft transmissions which:

"raise your transfer case gearing by 15%, by replacing the gearing in the
exising 1.410 ratio transfer box with new geniune Q (quiet) gears, as used
in the Disco II."

Can anybody tell me how many rpm I should be doing in 5th at 70mph? (No rev
counter yet...)

Thanks


--
T

Defender XS90

On Sun, 8 May 2005 19:23:44 +0000 (UTC), T wrote:

> Can anybody tell me how many rpm I should be doing in 5th at 70mph?

Not 100% sure in which vechicle you are refering but a Disco II with,
AFAIK standard gearing and tyre diameter, (tyres are 255/55R18) does
2250rpm (give or take a tad) for 60mph or about 2600 for 70 but I
rarely go that fast as it seems to be straining a bit. Much happier
hitting the at about 62mph or 2300ish rpm in 5th.

All as indicated by the instrumentation of unknown accuracy...

--
Cheers [email protected]
Dave. pam is missing e-mail

The 'Q' ratio gearset that you have just installed has a 1.211 hi gear ratio
(compared to the 1.410 original). This means that your engine revs are
going to be 1.410/1.211 = 18% higher than previously for same road speed.

Hope this helps

"'T'" <[email protected]> wrote in message
news:[email protected]...
> Just had my transfer box ratios changed in my Defender with some higher
> ratio gears from Ashcroft transmissions which:
>
> "raise your transfer case gearing by 15%, by replacing the gearing in the
> exising 1.410 ratio transfer box with new geniune Q (quiet) gears, as used
> in the Disco II."
>
> Can anybody tell me how many rpm I should be doing in 5th at 70mph? (No
rev
> counter yet...)
>
> Thanks
>
>
> --
> T
>
> Defender XS90
>
>

or 18% lower, but thanks


"Kevin Pearce" <[email protected]> wrote in message
news:[email protected]...
> The 'Q' ratio gearset that you have just installed has a 1.211 hi gear
> ratio
> (compared to the 1.410 original). This means that your engine revs are
> going to be 1.410/1.211 = 18% higher than previously for same road speed.
>
> Hope this helps
>
> "'T'" <[email protected]> wrote in message
> news:[email protected]...
>> Just had my transfer box ratios changed in my Defender with some higher
>> ratio gears from Ashcroft transmissions which:
>>
>> "raise your transfer case gearing by 15%, by replacing the gearing in
>> the
>> exising 1.410 ratio transfer box with new geniune Q (quiet) gears, as
>> used
>> in the Disco II."
>>
>> Can anybody tell me how many rpm I should be doing in 5th at 70mph? (No
> rev
>> counter yet...)
>>
>> Thanks
>>
>>
>> --
>> T
>>
>> Defender XS90
>>
>>
>
>