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Author: Subject: rwd basics
beaver34

posted on 27/5/09 at 09:19 PM Reply With Quote
rwd basics

hi there, abit of a strange post really, im new to rwd cars, only ever driven fwd cars in anger, and im wanting some basic do and dont that differ from the fwd style of driving if that makes sense, last thing i want is to jump into something with 350 bhp per tonne ans make a mess, thanks alastair
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StevieB

posted on 27/5/09 at 09:21 PM Reply With Quote
Take it easy in the wet and go to a few airfield trackdays where you can push the car and experiment with the handling/how much bottle you have in relative safety.

I guess you should also bear in mind that if you push hard through a corner, you'll get oversteer rather than understeer.

[Edited on 27/5/09 by StevieB]

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snapper

posted on 27/5/09 at 09:35 PM Reply With Quote
Mate of mine is in the same position, front wheel drive rep cars for years now has a Fisher Fury, nearly always exits a corner with a twitch.
Seems to go in the corner late and apply power early expecting the car to pull out.
You will probably end up going into a round a bout slower and exiting faster than you would in a front wheel drive





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hobzy

posted on 27/5/09 at 09:36 PM Reply With Quote
Take it from me they are not to be taken lightly, and can catch you out completely:

http://www.locostbuilders.co.uk/viewthread.php?tid=114163

Motorsports-events (I think its them) do trackdays at airfields down south and at some of them have a no limits section separate from the track to learn the limits of the car. After my Monday, I'll be doing just that - once the cars fixed.

They are so light that once they are sliding on a wet road you are really a passenger.

Still, they are flipping great fun though!






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austin man

posted on 27/5/09 at 09:44 PM Reply With Quote
main thing to remember is pull them seat belts in tight and hold on.

Just take it easy and build up speed over a time and remember your being pushed not pulled its always handy to learn opposite lock.





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zilspeed

posted on 27/5/09 at 10:08 PM Reply With Quote
It's not just the RWD you have to watch out for.
It's the combination of RWD and light weight.

Think of it this way. Come barrelling into a slow corner in a FWD car and screw up your braking and do a clumsy downshift.
The weight will all go to the front and it'll slow and turn - no problem.

Do the same in a lightweight and RWD car and you're facing the wrong direction because you were still going too fast and the clumsy gearchange locked the back wheels.
Braking properly, and shifting properly is much overlooked.
Get it right and all four wheels do theirecorrect share of the work - all the way into, through and out of the corner.

[Edited on 27/5/09 by zilspeed]






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hellbent345

posted on 27/5/09 at 10:25 PM Reply With Quote
yep, as mentioned before, you will definately have got into the habit of flooring it if you get into a bit of sideways difficulty if you are a good driver, or snapping the throttle closed if you get understeer or other slidey moments etc if you are relatively untrained - thats how every untrained person apparently reacts, and why fwd cars are manufactures norm, because normal people are safer in them.
just get some training on an airfield or something, before you try and power out of corners tried to do that when i had a sierra, gave too much, slid too wide, snapped the throttle closed and it whipped back on me and i was fishtailing down the road lol






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blakep82

posted on 27/5/09 at 10:50 PM Reply With Quote
if theres not trackdays (or too expensive), silly as it sounds, go karting can be useful. i've been karting since i was about 10, not racing, and not every weekend or anything, but i've never had any problems in a rwd car i've not been able to sort out





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Steve Hignett

posted on 27/5/09 at 10:57 PM Reply With Quote
This might be frowned upon considering the other sensible trackday responses.

But if you can find a safe (ie empty) small to medium sized roundabout, then just see if your car will step out on you and 10, 20, 30, etc.

Please don't think I am suggesting the you lap it until you spin out - neither am I telling you to attack it at midnight every night for a week, but I found that if I approached it in a predictable manner carefully building up my speed every now and again when I went round a specific roundabout, it gave me a bit more confidence. Then the day that it did get a bit squirally , because I knew the road qute well, I wasn't as daunted and just drove out of it ok.

Then the next time, went in at the same speed, set up for it to be a bit unsteady, and it didn't step out as I was ready for it etc.

Obviously this would be much better practiced on waste ground or an airfield TD, but as long as you go about it with a sensible approach, and I do genuinely mean that!, then you should be ok.

I'll apologise now to all I offend by saying the above, but I do think there's a time and a place and sometimes it's ok, to push on a little bit on the road...

ATB
Steve

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blakep82

posted on 27/5/09 at 11:43 PM Reply With Quote
steve makes a good point actually, sometimes i go round big roundabouts like that when its quiet, just push a little bit til you feel the back start to give.

also, while i understand what happened to hobzy, and there was a mentions on his thread about the dangers of diesel spills and industrial estates etc, sometimes its worth going out to find the slippery bits.

its a lot less dangerous if you expect it to happen. when it snows (ok, you've got a long wait now) i always make a point of going out in the snow.

all of my cars have always been rwd by the way. i can't stand fwd cars





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alistairolsen

posted on 28/5/09 at 12:58 AM Reply With Quote
Not tried it yet, been in rwd cars on snow and stuff but never driven in anger at speed, but I agree with the deserted roundabout approach.

Anyone whos driven on a track will know the grip level is completely different, not only in the point at which grip is lost, but also in the way the car responds afterwards.

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beaver34

posted on 28/5/09 at 06:53 AM Reply With Quote
thanks guys for the input, ill take it steady corner wise for a while, and im sure ill find some deserted roundabout on the many industrial estates there are around here
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britishtrident

posted on 28/5/09 at 07:12 AM Reply With Quote
Slow in - fast out

Get all your braking finished with before the corner .

Foot off the brake and as nose starts to rise turn in on netral throttle

Then a very slight increase in power as you approach the apex.
Carefully start to feed more powrer in as you skim the apex.

Remember on most RWD cars slight increase in power gives you undrsteer (because it lifts weight off the front wheels).
Lots of power = oversteer because it unsticks the rear.

[Edited on 28/5/09 by britishtrident]





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scudderfish

posted on 28/5/09 at 07:19 AM Reply With Quote
http://www.carlimits.com

Very good.

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TimC

posted on 28/5/09 at 07:40 AM Reply With Quote
Don't change down once you've turned in - ever.






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fesycresy

posted on 28/5/09 at 08:54 AM Reply With Quote
Get a quick rack.

More chance of saving a big slide





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peteday_uk@btinternet.com

posted on 28/5/09 at 09:23 AM Reply With Quote
My first experience in a proper rear wheel drive car was in an NSX. I thought I was jonny big bo**ocks until I went into a left hand bend which went into a right (for those that know Stoneleigh it on the approach to the show ground by the water works). I breaked in a straight line, then turned in.

What I didn't account for was the camber of the road, so as I went over the err hump/crest the rear end became unweighted, I turned in and held it.....then panic set in so I lifted off (not break) just lifted off. That sent the arse in the other direction which I couldn't control, did a complete 180. Didn't crash into anything but I was shaking like a sh*ting dog.

I'm not proud of what happened and fortunatly for me there were no other cars near me or else perhaps I wouldn't be typing this to you now.

I now respect anything that is rear wheel drive and although I can't wait to finish the MK I am already feeling very nervous about driving it.

Pete

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rb968

posted on 28/5/09 at 09:55 AM Reply With Quote
I remember hearing a good adage (I think it was Jackie Stewart) of never getting on the throttle in a corner until you were sure you sure you wouldn't have to come off it. As said above, get everything done before the corner (braking and downshifts) balanced throttle at turn in then gradually feed in the power. The issue with sevens is always going to be the lack of weight at the rear meaning it can be more easily upset by bumps, wheelspin, sudden inputs or power on/off etc. I would ditto that a trackday or airfield day [referably is the place to learn the limits.

Rich

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David Jenkins

posted on 28/5/09 at 11:18 AM Reply With Quote
As said above:

1. Get your speed and gears right before the corner - you want the gear that'll take you all the way round the corner, if at all possible.

2. You'll want to be at a constant speed through, or accelerating if you're in a hurry, to keep the weight balanced.

3. Don't change gear half-way through a corner, unless you're VERY good - it'll upset the balance of the car, take the weight off the back wheels and cause a spin if you're near the limit.

4. For the same reason, avoid braking half-way round a corner when on or near the limit. Sometimes it's unavoidable, but be prepared for the back end shifting out if you do!

Saying all that - I have always preferred RWD as that's what I grew up with. It's much more enjoyable than FWD when you know how to handle it instinctively.

Also as said above - find somewhere safe to play, and to get to know both the car's limits and your own.

Have fun!

P.S. an afterthought - don't go anywhere near the car's limits on the public road as these cars let go VERY quickly, and it's nice to know that you aren't going to hit anything solid, or worse still, a bystander if everything goes wrong.

[Edited on 28/5/09 by David Jenkins]






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beaver34

posted on 28/5/09 at 07:04 PM Reply With Quote
quote:
Originally posted by fesycresy
Get a quick rack.

More chance of saving a big slide


got one of those, had a little rive tonight to a mates to get the car tracking done, had issues with the throttle, over bumper when coasting in first i was proding the pedal and it was jearking like mad, but i think thats down to not really having to touch the pedal at all to get the car to move, and the fact its on bike bodies and there used to hand controls, saying that ive had the engine in a fwd car and never had those issues really, either way felt good!

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Mark Allanson

posted on 28/5/09 at 09:08 PM Reply With Quote
Getting to know (and enjoy) the difference between handling and roadholding, and knowing that low profile tyres will improve one at the expense of the other.





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