Castle Combe, How fast?
Turbo Mini Forums

Basically what's the top speed that you're likely to reach going round Combe in a Mini? I realise that the actual speed will depend on a lot of factors but I'm only after a ball park.

The reason I ask is that I'm trying to work out the final drive ratio for my next project, which is going to be primarily for track use, so my current plan is to work out the top speed and work back from there.

EDIT: Fixed embarrassing spelling mistake

Edited by Rob H on 14th Feb, 2007.

There's only one "o" in the Combe of Castle Combe!

Apart from that it depends on the power of the mini in question, at higher speeds aerodynamics of a mini become a limiting factor quickly.

i was in a 911 on the limiter at about 145 round there!

i'm guessing as long as your mini will pull it you'll about hit it.

I'd guess 120ish?

Sorry for being pedantic but its one of my pet hates, along with weber (as in the carburettor) spelt "webber"........!!

My 205 weighing 825kg with 170 bananas pulled an indicated 125mph when I was being brave over avon rise, probably about 115-120ish when the speedo accuracy is considered.

Ask JF .... his car looked like it was travelling in the footage I saw.

I have seen 110 in the 1380 (Racheal) and 175 in my mates Ultima

Every day is a school day ...........

How fast and how expensive ...... the same question...

120 in my BINI GP in the wet

115 in the bmw e34 540 in the dry (Iain or Dan will remember!)

Gear it to about 120mph and you'll go well on track


Alex

AlexF

Edited by Rob H on 14th Feb, 2007.

So with a Turbo A Series we're looking at 6K red line (I know there are a few people on this site that are looking at high revving turbo engines but I don't have the skills or knowledge to go down that route) so to get a top speed of 120 I'm looking at a 2.95 final drive. Does that sound right?

Depends on wheel size but it sounds about right yes.

Probably ......

Remind me of your e-mail ... I've a ratio chart that might interest you, includes accelerative effort.

Every day is a school day ...........

How fast and how expensive ...... the same question...

i'd say you could pull a min of 6.5k and more likely 7k still with decent power.

I'll tell you friday!!

ive hit my limiter at 105ish around there on a 3.44, and then had to keep backing off

heres my race ....lol http://youtube.com/watch?v=Mt3l5xZ4a6A

pulling 6.5 k 2.9 diff on 13s with challenge gearset

just a tad over 135 mph

Edited by BENROSS on 15th Feb, 2007.

i would say 3.2 or 3.1 unles you are running shed loads of hp,

always looking for them bigger bunches of bannanas

110 through folly , depends how well you take camp ( aka alexf ) , 125 in a mini .. mmmm well it is poss , but you`d need to carry some speed to get up to that , plus avon will be coming up at pretty quick

Everyone knows that instructions only have to be read if the thing doesn't work....

why do people think that a turbo mini has a max rpm of 6,000 or 6,500? the standard bottom end can take more like 8,000rpm but to be safe and as power drops off i restrict mine to 7000rpm.

around cooombe ive run out of revs with a 3.2 final drive and 10" wheels.

i thought a turbo lump or a 1275 would not rev alot more than 6500rpm as its a long stroke engine!
a 998 on the other hand revs love to rev high!
so whats the secret with reving it over 6500rpm then?? just get everything lightend and balanced or what?

acording to my gear ratio calculator, a 3.1 on 10" wheels in top (4th) could do 119mph at 6500rpm, does that sound right?

cheers
josh

Edited by JT on 15th Feb, 2007.

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985

Benross....shes sounds very nice, great inspiration listening to that.

119 ,, yeah spot on ..... down hill with a tail wind ................... and a 5 mile run up ....... mini is like a brick ... the air just flows over it ....... NOT

Everyone knows that instructions only have to be read if the thing doesn't work....

My engine in its previous life (N/A) used to rev to 8k went well off the clock at 8k. (998 speedo) Lol

A mate following said it was 120mph.

That was on 10's 3.2 diff.

https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel

www.fusionfabs.co.uk



1/4mile in 13.2sec @ 111 terminal on 15psi

my current N/A 998 does 100mph on a flat road with a 3.44 fd on 10's

thats with my mate following me and checking.

not sure what it would do round combe though as iv never been!

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985

i can easily hit the limiter at 7,000 rpm in 4th with 10" wheels and a 3.2 diff. its so easy that i recon i could still hit the limiter with a 2.9diff with out any problems

going back to the point of the thread , combe is not very long so if you are geared for say .. 135 its not long enought to reach it .

Everyone knows that instructions only have to be read if the thing doesn't work....