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PostPosted: Sat Jun 19, 2010 12:13 am 
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blue_deluxe wrote:
Not sure on power losses, but id assume so.
The sierra (and most 4wds) have lockable front hubs. So to engage 4wd you need to engage 4 low or 4 high on the transfer case, then lock the hubs to make the front wheels turn. And you can only do it on loose surfaces as the gearbox winds up, as the wheels turn relative to each other. Similar idea to a locked diff.

My thought was to ditch the std diffs and fit independent suspension, LSD diffs....or something like that. But if the trany dosn't match the speed of the other drive shaft it would not work.
mickmini no, the idea is to stay away from the issues of running two engines, different power out puts, uneven cooling, uneven tunes, what happens if one engine fail bad at high speeds etc etc. Basically I want the closest to even weight distribution and AWD either through a constant AWD system or a constantly engaged 4WD system (moded to suit).
Or like blue_deluxe said eirler an extra idler/drop gear in the system would solve the problem.

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PostPosted: Thu Jul 15, 2010 8:30 pm 
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Suzuki Ignis / Holden Cruze.
1.3 or 1.5L
5 speed manual
AWD
East west engine
Could be a good donor car...
Has anyone got more details on these cars?

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PostPosted: Thu Jul 15, 2010 9:37 pm 
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Location: the inner west of sydeney!
i reckon SX4 woud be nicer ;)

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PostPosted: Thu Jul 15, 2010 10:27 pm 
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998cc
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There is a mob in the states that are working on an awd mini. The donor is a Honda CRV.

http://superfastminis.com/AWD_MINI.htm

Is this what you are looking for?

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PostPosted: Fri Jul 16, 2010 11:45 pm 
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I was thinking of a cheap and more available donor vehicle. Plus these Suzuki Ignis / Holden Cruze have a very small engine bay.
Looking at the transfer case on them it's rather small roughly 150 tall and a 300 long (around 250 wide including shafts). It could easily be adapted to most FWD cars that have an off center diff so the trany can sit in the center of the car/exhaust tunnel.
Might be possible to convert a Starlet mini to an AWD mini.

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PostPosted: Sat Jul 17, 2010 9:26 am 
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Im toying with the idea of turning my starlet mini into awd (if it ever gets finished). Im planning to use a nissan pulsar gtir rear cradle, the only problem is the transfer case and modifying the starlet gearbox to a suitable output shaft for the transfer case.

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PostPosted: Sat Jul 17, 2010 9:44 am 
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Have a look at one of these, I havn't found any pics on the net of one yet. They simply join into the one side of the front diff and the driveshaft continues on the other side of the trany. The only thing I can think of being an isue is if the trany sits too low :? .

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PostPosted: Sat Jul 17, 2010 9:49 am 
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Thats something like i was thinking of, the only issue i can think of it might give interesting feedback through the steering wheel. As the drivers side front wheel would be constantly loaded, as its powering the rears and the fronts.
Im a bit sketchy on diffs though, so welcome to correction.

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PostPosted: Sat Jul 17, 2010 5:32 pm 
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Location: Wodonga - Vic/NSW border
Kennomini wrote:
Suzuki Ignis / Holden Cruze.
1.3 or 1.5L
5 speed manual
AWD
East west engine
Could be a good donor car...
Has anyone got more details on these cars?


live axle back-end... no IRS

I reckon Honda Civic AWD is the best one.... slowly slowly


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PostPosted: Sun Jul 18, 2010 1:30 am 
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Simply make a rear cradle to hold a subie or commodore independent rear diff, so long as it has the same ratio as the std Ignis rear your laughing. All we really want out of the Ignis is the engine and front drive train set up. The suspension, hubs, brakes and rear diff can be gathered from anywhere mostly re-use the mini items where possible.

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PostPosted: Wed Jul 21, 2010 8:42 am 
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1275cc
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Location: Burpengary, Queensland - Home of Tricky Performance Engineering
For a mid-mount, if had the money, and if it was just a track car, this is the powerplant I would use:
http://www.pistonheads.com/news/default.asp?storyId=19975

The new Ariel Atom V8 engine, which produces 500hp and weighs just 90kg's.
Mated to the new Sadev 6-speed sequential gearbox - this combo would be just balls-to-the-wall exciting to say the least.

Cheers,
Tricky

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PostPosted: Wed Jul 21, 2010 6:30 pm 
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why not use a ep95 starlet AWD setup http://www.youtube.com/watch?v=7GKCuY6rY0I Daren


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PostPosted: Wed Jul 21, 2010 7:18 pm 
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998cc
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I guess most transversely mounted AWD systems have a power distribution concentrated to the front? At least the Honda works this way; it only sends power to the rear if the front axle looses grip.

But the real fun is the other way round... And that's realy HUGE fun! Sh!tloads of grip & all the funny adavantges of RWD 8) Most fun I've had in the snow for a while. And that was only a 99HP diesel Pajero-copy from Hyundai :D (only RWD didn't move at all...)

So if I was to build a AWD Mini, I'd be looking for a setup that puts most power to the rear in the first place 8)

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PostPosted: Wed Jul 21, 2010 7:41 pm 
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Asphalt wrote:
If you mount a FWD engine longitudinioual - in line :D - run a shaft from the diff to the front and the rear, putt another diff on each end of the shaft. Wouldn't this give you a 4WD car with center diff? :)

I guess the uwual FWD engine & gearox would be smal enough to mount it long... in line in a Mini (making it a two seater of course). :)


Yeah that did cross my mind but the problem of having all the weight on one side of the car was my issue. I guess if you tilt the engine back over the top of the diff that would center the weight.
So long as the engine can run at full knock on an angle like that + cornering will enhance the the oil level/surge issue.

Has got me thinking again though :) .

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PostPosted: Wed Jul 21, 2010 11:00 pm 
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Why not go for something like this
Image
Put a diff in all 3 centres, or spools if your built like a gorilla.
Not road legal but its what im planning to build as a track special.

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