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Author Topic: FWD OR RWD?????  (Read 8324 times)

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andyc

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Re: FWD OR RWD?????
« Reply #30 on: 07 September 2010, 15:22:31 »
If your going RWD then before you start cutting the trans tunnel and bulk head check with VOSA .

As you will be changing the ID of the cars shell you might fall foul to VOSA rules and have to go through an SVA test.

Theres lots on the Nett about this and yes VOSA & DVLA aren't clean on there own rules either buts is worth checking before you spend a bucket of cash for it not to be legal

Cheers
Andy
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Mr Skrunts

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Re: FWD OR RWD?????
« Reply #31 on: 07 September 2010, 18:47:42 »
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Mr Skrunts

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Re: FWD OR RWD?????
« Reply #32 on: 07 September 2010, 18:53:22 »
Or make a project car for drag racing.

[media]http://www.youtube.com/watch?v=8x2G2DSG9dU&feature=related[/media]

http://www.youtube.com/watch?v=8x2G2DSG9dU&feature=related
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albitz

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Re: FWD OR RWD?????
« Reply #33 on: 07 September 2010, 19:05:20 »
RWD is definitely the way to go imo. A powerful FWD car is a bit of a waste of time as the driven wheels are also the steered wheeels, and doing both jobs at once with a reasonable amount of power going to the wheels isnt much fun. You spend the whole time fighting and being limited by torque steer.
Assuming the driver is fairly competent small/powerful RWD cars are about as much fun as it gets on 4 wheels imo. Break traction going into a corner and just steer it on the throttle, on opposite lock while looking out the side window.
As I said in another recent thread on the subject - there is no such thing as a purpose built FWD competition car afaik - theres a good reason for that. ;)
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Webby the Bear

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Re: FWD OR RWD?????
« Reply #34 on: 07 September 2010, 19:08:16 »
hi mate,

i'm really no expert but how on earth are you going to keep the thing planted on the ground. its awsome idea to put that engine in but its gonna be 2 much power aint it?
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2woody

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Re: FWD OR RWD?????
« Reply #35 on: 07 September 2010, 20:34:37 »
front wheel drive is easier, but rear wheel drive is much better.

FWD is easily-doable with pretty much standard parts. And, if you have equal-length drive-shafts then there won't be any torque-steer.

RWD is much, much better, but much harder to achieve. As a first, you'd need to make sure that the roll-centre is known and compatible with the front - and you then need to set about designing the suspension installation to suit. It's a really tough ask, and one I'd have to think twice about before embarking on, even having spent the last twenty years designing cars for a living.

a good start would be putting struts at the rear as well as the front, providing the roll characteristics are right.

semi-trailing arms as per Omega are not really suited to a small car, and as for a live-axle, don't even think about it, I'm presuming you want a car and not a tractor.
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unclelicklug

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Re: FWD OR RWD?????
« Reply #36 on: 07 September 2010, 20:35:47 »
Just for the sake of getting the thing done at all I'd probably stick with FWD, which I think can be more or less made up from fairly standard production parts - sorry I know I'm probably over simplifying there.

But to make RWD you will have to engineer the car from scratch, most significantly to make up a new rear end to incorporate some transmission...I don't know off hand what you would put in for that, I am sure there are ways but you'd be looking at a lot of work to make it work right in a very light car, playing with spring and damper rates.

I'm sure you know what you are doing but the above would daunt me...

For insurance etc I expect you would need an engineer's report on your finished car, should not be a problem if your work is good.

TBH I think FWD or RWD this will be overengined either way...but final word is don't let anything put you off giving it a try.
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Martin_1962

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Re: FWD OR RWD?????
« Reply #37 on: 07 September 2010, 20:38:01 »
Live axles can work pretty well
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hotel21

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Re: FWD OR RWD?????
« Reply #38 on: 07 September 2010, 20:45:50 »
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mh_trigger

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Re: FWD OR RWD?????
« Reply #39 on: 07 September 2010, 22:13:13 »
Right then......ive spoke to somebody whos done a rwd c20xe corsa and ive been advised that....and i quote  "unless youve got loads of money,loads of time and loads of space......dont do it!" so....and this is a very difficult decision :'(......im not gonna do rwd..... :'(...not yet anyway!  ;)

maybe in a few years :y :y :y

So i would like to thank all the oof members that have been teasing me with pictures and putting both cases forward :y
« Last Edit: 07 September 2010, 22:14:20 by Matt_H »
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Mr Skrunts

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Re: FWD OR RWD?????
« Reply #40 on: 07 September 2010, 22:15:30 »
Leave the engine  in the front as FWD, then stick another in the back then you have 3 drive choices.

FWD, RWD or 4 Wheel drive.  and yes it has been done before.
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Mr Skrunts

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Re: FWD OR RWD?????
« Reply #41 on: 07 September 2010, 22:17:37 »
[media]http://www.youtube.com/watch?v=HPlAksTNT9Q[/media]
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hotel21

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Re: FWD OR RWD?????
« Reply #42 on: 07 September 2010, 22:18:14 »
Quote
Leave the engine  in the front as FWD, then stick another in the back then you have 3 drive choices.

FWD, RWD or 4 Wheel drive.  and yes it has been done before.

The twin engine 2CV immediately springs to mind...

http://www.cats-citroen.net/citroen_2cv/2cv_history_sahara.html

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Mr Skrunts

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Re: FWD OR RWD?????
« Reply #43 on: 07 September 2010, 22:18:37 »
[media]http://www.youtube.com/watch?v=V49s6XG4wjU&feature=related[/media]
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bigegg

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Re: FWD OR RWD?????
« Reply #44 on: 07 September 2010, 22:20:55 »
There's a word for vehicles which are pulled from the front - horsecart.

I *hate* fwd cars - the only reason is cheapness. a proper car has the engine at the front, and drive wheels at the back.



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