57 replies to this topic

[timbo]

Personally find it more impressive to see a clearly very quick car being driven sensibly...at the other end of the spectrum whats ultimatly unimpressive is a slow car being driven like their in a caterham on a track...

Fair comment but it does feel good when i drive on motorways to overtake the motorway cruisers, bm's and mercs in a mini!

[Sam Walters]

simple anser should have been about 12 posts ago is

power at wheels/6 if its a 600kg car

then timed by 10 so

180/6=30

x10 300

i duno what the rest of are babbeling on about could be random rubbish of failing that im clueless

being clueless is more my thing tho!

[fatmini]

the link in the second post will only allow u to calculate ur weight between 600kg and 2000kg

but mines got to be alot less as its all fiberglass does any 1 know how much a mini minus weighs

[Jammy]

A Minus doesn't weigh a great deal less than a normal mini. Ades Minus was about 550kg.

[fatmini]

oh right ? cheers !

[paulrockliffe]

oh right ? cheers !

Yeah, fibreglass is lighter, but you have to use more of it to get the strength. On top of that, all the other bits of the car weigh the same - what does an empty shell weigh?

[paulrockliffe]

Oh yeah and I meant to ask - surely the subaru's 4 wheel drive takes more bhp to drive it than a mini's simple gearbox and pair of drive shafts???

[Dev]

10% transmission losses?????


what the hell do you get your gearboxes from i want one!!

Count on 25-50 % dependant on the box and condition.

[fatmini]

10% transmission losses?????


what the hell do you get your gearboxes from i want one!!

Count on 25-50 % dependant on the box and condition.

is there a difinitive answer on this as i would rely love to know as well

[Jammy]

Typically gearbox losses are about 30% for a box in good condition, but as Dev says, it could be anything between 20%-50%.

[Dev]

Also diff ratio will make a difference, on my 2.7 i lost 50 bhp to transmission. yes 50 bhp you read that right on my rebulit box with 3.44 i lost 22 bhp.

which is approx 25% of my power gone.

But i am so glad i got it all set up again properly.

[fatmini]

ok so if i have 90bhp at the fly with a good/new box 3.1final drive am i looking 75-80bhp at the wheels ?

also will a straight cut gear box improve the losses or is it only realy for strength

Edited by fatmini, 08 June 2007 - 12:57 PM.

[The Matt]

10% transmission losses?????

what the hell do you get your gearboxes from i want one!!

Nowhere, it was just an example

[Dev]

SCCR may imporve losses but i would suspect you will be very surprised when you put it on the rollers FM.

I would suggest you are being over hopeful with that and should be looking at high 60's for your wheels figures.

Anyway RR proves nothing as i have said before. Its all pub talk.

Its what you do on the track / road that matters.

Just make sure you dont run out of the most important thing in fast paced driving.......


TALENT

[Jammy]

Just make sure you dont run out of the most important thing in fast paced driving.......

Petrol!