I've been thinking(I know)
I was following a VW golf 4motion and thinking about modern 4 wheel drive hatches and saloons.
Would the back axles be any use for Locost purposes?
The ones I can think of are The Golf, Cavaliers, Mondeo & Jaguars, Audis, subaru.
Any more, and can anyone tell me why it wouldn't work?
Cheers
Chris
well, IMHO if it turns the right way, and has the right ratio, it should be fine, though if i had a powerful 4x4 id be sorely tempted to use all of
the drivetrain. I suppose RWD is more fun than AWD though, but youd need a new g box to make it RWD i guess, which would make it a trifle wasteful
only using the back end. Plus golf 4motions are a trifle expensive to massacre! however, i suppose from a scrappers it could be a good option. Most
would be IRS wouldn't they?
trifle trifle bloody trifle.... gotta stop saying that.
i'll be getting fat...
[Edited on 8/8/03 by JoelP]
[Edited on 8/8/03 by JoelP]
What about these then
Nuff said.
yours, Pete.
I guess the potential problem with some of them would be that they typically work on a front biased power ratio (things like golf, cavalier, audi
etc.) which may mean that the rear axle components are not designed for continuous application of the full amount of power their respective engines
generate. e.g. Cavalier 4x4 had about 130bhp, would generally only put 60 through rear, probable max through rear in short bursts no more than
100bhp.
Putting all the power through them may lead to shorter than expected life if you have decent engine power. Otherwise, no reason why they wouldn't
work.
I understand what you are saying about the back axles maybe not good for the power.
But most live axle Locost's have Escort or Cortina type axles that weren't designed for lots of power either and seem to cope quite well
with double what they were originaly working with.
I am sure that these axles could cope with quite a lot more power. (but I could be wrong, and often am )
A good idea in the first place, since donor axles are getting harder to find.
Rick
how bout BMW,millions of them about and bomb proof as well
Heard rumours of these RWD Mondeos. Apparently it's the same running gear as the back of an RS2000 4x4 but I've never managed to find out
which model Mondeo to look out for. Any clues?
Chris
A lot of Westfield BEC's use Landrover Freelander rear diffs, which are originally 4X4.
HTH Stu.
We're going to be using the rear diff and gubbins off a sierra 4x4 - afaik similar to the normal rwd sort in size of casing etc, but limited
slip. front end is going to be rover v8 and gearbox.
I think craig1401 is doing that too.. If it can't handle the torque I'll let you know
[Edited on 9/8/03 by blueshift]
dont take this as fact, but someone told me that the 4x4 drivetrain on sierras breaks all the time, can take the 2.9 power... they said a relative had had it fixed several times. maybe they were just a poo driver!
The reason they use the Freelander diff is because they are half the weight of almost anything else, my uncle has one on he's Megabusa, no probs
with power on these
Rick
quote:
Originally posted by ChrisW
Heard rumours of these RWD Mondeos. Apparently it's the same running gear as the back of an RS2000 4x4 but I've never managed to find out which model Mondeo to look out for. Any clues?
Chris
my neighbour used to have a 2.0 4x4.... at least thats what it said on the side!
There were some 4WD mondeos
Dont have any production figures.
Have a look Here
Cheers
Chris
[Edited on 9/8/03 by chrisg]
My comment was only personal observation! I havn't seen many at all, but maybe the badges were discreet!
quote:
Originally posted by chrisg
There were some 4WD mondeos
Noodle, beat me too it!!
Any of the Nissan Skylines, All AWD Audis but the TT, All Subarus are RWD biased. Rear differentials receive 100% of the power under normal driving,
so you'd be safe to plug a lot of power through them.
I think that rear ends that weren't designed for high power will work alright due to the greatly reduced weight.
Imagine trying to lift a rock with a stick: Trying to lift a big rock with a small stick will break the stick, but if you use the same stick on a
small rock it will work fine, regardless of how much input force you give it...
If you're trying to use a full-time AWD system rather than an on-demand 4x4 system, the rear end should not matter, as long as you have the right
sensors and such. This is not true for all cases, but for the majority it is. A RWD Dastun differential will work with a Pulsar GTi-R AWD system
(and is a fairly common setup from what I understand) as long as the slip sensors and drive/propshafts fit.
What is your AWD or 4x4 plan?
-MR
quote:
All Subarus are RWD biased
Hmmn... I believe that understeer is partially from weight distribution, partially from the the AWD system's propensity to want to deliver power
to the front.
If the biasing were 50/50 all the time, it would make the fuel economy suck hardcore - known as 4x4. Therein lies the beauty of AWD, power going only
where it can be applied.
The vast majority of AWD systems used in road cars (and race cars for that matter) are descendant from the Audi Quattro AWD system first found in the
WRC Coupes of the 80's. The 50/50, 40/60/ or 70/30 ratios are often used to describe how much power CAN be alloted to the respective sides.
Subarus mostly have up to 50% front under extreme slip, while Skylines will only direct 30% of the power to the fronts even if the rear wheels are
smoking madly.
Something else that occured to me is the use of Porsche rears - 944 or 911's can be found on Ebay quite often or at the junkyard/breakers
yard.
-MR
quote:
The 50/50, 40/60/ or 70/30 ratios are often used to describe how much power CAN be alloted to the respective sides.
quote:
If the biasing were 50/50 all the time, it would make the fuel economy suck hardcore - known as 4x4
Liam:
quote:Actually the Torsen diffs in Audis are in the centre, not the rear.
Audi quattro rear diff's are Torsens
quote:As does the 200 Turbo Coupe. A guy who worked with Tony Pond on chassis development for these things told me they could cause serious handling problems in the FWD motor. Apparently Mr. P could replicate the car losing control at a certain speed round a certain bend again and again. He intimated that this caused their demise (litigation fears).
Originally posted by Rorty
Incidently, the Rover 600 and 800 Ti Coupes have Torsen diffs in their FWD set ups. Possible contenders for mid-mounting?
quote:
Actually the Torsen diffs in Audis are in the centre, not the rear.
I know thats what Oxford brookes are using in their car.
Its powered by a CBR 600 and has a full carbon tub. Its got a silly power to weight ratio. The competion was on last month. Dunno how brookes got on
though.
quote:
Apparently Mr. P could replicate the car losing control at a certain speed round a certain bend again and again. He intimated that this caused their demise (litigation fears).
True or not? Dunno.
Neil.
I have the chance of obtaining a jag backk axle of XJ40 1991 not sure if they are live axle if they are has anybody ever fitted one building book
built chassis with ZX-9R Engine .
Thanks Chris B