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Help needed with speed calculation

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Old Aug 17, 2005 | 08:06 PM
  #1  
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Default Help needed with speed calculation

Can someone please calculate a top speed for me ?

Car @ 6k rpm

std 2wd Cossie 5spd gearbox

3.700 diff ratio

195x70x14 tyres

Top gear @ 6k rpm, what will it be pulling ish ?
ta
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Old Aug 17, 2005 | 08:25 PM
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By way of a BTTT and i shouldve paid attention in Maths class.........
Can someone work out a Final Drive ratio for me ; well two actually depending on tyre availablity

630 & 645 profile ( roling Radius )

7000 revs and i'll need between 145- 150 mph .
this is 1.1 final drive from gearbox , please

sorry to hijack your post .!
tony
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Old Aug 17, 2005 | 08:44 PM
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wyn

149mph just over ,

tony


3.4:1 will get you 147mph at 7k on the 630's

3.4:1 will get you 151mph at 7k on the 645's

any use ?
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Old Aug 17, 2005 | 08:59 PM
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Mark, thats great m8, cheers

That's fast enough fa me lol
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Old Aug 17, 2005 | 09:02 PM
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Eh up , Flat cap n whippet , thought of you as i passed blackpool earlier today , sorry no time for a meet up and trailer on the back hence the questions !
cheers for the calc's , now tell me what 9" or 7.5" Ford ratio would do this , probably 9" as ive 600hp going through it now !!!!!
Cheers , i'll go t'foot of our stairs etc....
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Old Aug 17, 2005 | 09:14 PM
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lol you shandy drinkin southerner , did you get your passport stamped when you cam up here ?

and i only live just off the side of the m6 wayyyyy before blackpool turnoff !!

if your sticking with the ford stuff it will have to be the 9" they did do a 3.41:1 if you can find one !!

and where did 600 brake suddenly come from ???

well sly you southerners

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Old Aug 17, 2005 | 09:20 PM
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600brake came all the way from Scotland chap , hence the M6 trip . Fuckin polar bears in the street on the way to the pub last nite . I'llmpst up the new bits when i have a chance , but its an animal much bigger than the black car !!
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Old Aug 17, 2005 | 09:50 PM
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hmmmmmmmmmm so what have you bought tony ?


send me sum pic mate !
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