Cadence Accelarating
Author
Discussion

theexcession

Original Poster:

11,669 posts

279 months

Tuesday 12th July 2005
quotequote all
We've had cadence braking, and even cadence clutching :laugh: but I wanted to bring up right foot technique.

I've read many posts over the years here about 'planting the right foot' and just wondered how many people really do plant the right foot all the way to the bottom and wait for the engine to catch up?

I guess that since I learnt most of my craft on bikes I never do this. It was never an option on a performance bike to just wind the throttle fully open, you'd either lose the back wheel or end up on your arse eating the front one.

When driving I'm constantly feeling with the right foot for the 'balance' point where the car will accelerate with a little more pressure and retard if you raise a litle.

I use it often to settle the suspension after going over a bump and also to balance the car in corners.

So how many people here would own up to planting the right root all the way, perhaps when over taking on a motorway and you want everything the car can provide?

I guess that one area where I might be guilty of this would be in a kart where there is very little pedal travel and the throttle is more of an on off affair.

best
Ex

slinky

15,704 posts

278 months

Tuesday 12th July 2005
quotequote all
I drive a 1.8 vectra.... the only way you can accelerate is foot flat to the boards!!

slinky

>> Edited by slinky on Tuesday 12th July 12:31

Rude-boy

22,227 posts

262 months

Tuesday 12th July 2005
quotequote all
The more power the car has the less likely I am to plant foot on the throttle.

Pro-Karts, all the time.

If I am in lazy git mode and driving the Audi in D as opposed to using the Tip-Tap thingy then I do plant it for overtaking as it engages the kick-down.

minimax

11,985 posts

285 months

Tuesday 12th July 2005
quotequote all
depends on the car.

In the Ginetta planting the throttle unless you're doing north of 100...you may as well call the hospital straight away

the mini suffers from transmission shunt if you plant it and also it will bog down until 3500 rpm due to the ridiculous cam profile

but any modern car, mostly I will plant it when necessary...usually a) they can take it, mechanically and b) they are FWD and c) they haven't enough power to be worried about (316/320i company cars)

gemini

11,352 posts

293 months

Tuesday 12th July 2005
quotequote all
in corners throttle should be "balanced" - constant acceleration - until the corner begins to unwind - then feed in the power?

Rob_F

4,153 posts

293 months

Tuesday 12th July 2005
quotequote all
In my mums Astra I just bury the throttle and see it as "cruise control". I had the throttle buried for about 25% of my last trip home from Exeter, not too frightening when it only hits 120units flat out on a slight downhill though

Rob.

Sleep Envy

62,260 posts

278 months

Tuesday 12th July 2005
quotequote all
gemini said:
in corners throttle should be "balanced" - constant acceleration - until the corner begins to unwind - then feed in the power?


to try and keep the balance of the car neutral otherwise you'll getr spat out facing backwards.

On a straight it's foot to the boards

theexcession

Original Poster:

11,669 posts

279 months

Tuesday 12th July 2005
quotequote all
Rude-boy said:
... then I do plant it for overtaking as it engages the kick-down.

Yup, that's a given, but would you ease off to find the balance point again?
gemini said:
in corners throttle should be "balanced" - constant acceleration - until the corner begins to unwind - then feed in the power?

Indeedy, I also seem to have some success dealing with moderate crosswinds whilst cornering on motorways in a high sided vehicle (Land Cruiser) by using the throttle, though I guess most of this could subconsciously be coming from the steering wheel.

havoc

33,346 posts

264 months

Tuesday 12th July 2005
quotequote all
In the dry, and in or above 2nd gear, then a progressive "plant" (i.e. not trying to shove it through the floor) is nothing to worry about in a straight line...enough grip and ability to deal with it.

But in the wet, or round corners, then you've got to meter it out...I'm still probably too lead-footed, but practice and all that...

simpo two

92,709 posts

294 months

Tuesday 12th July 2005
quotequote all
A car can only accelerate so fast. Ther may be no difference in the result between using 50% and 100% throttle (depend on car of course).

One exception is kick-down in autos where you need a bootful to drop two cogs.

Another exception is a TVR Griffith, as I wish to live

speedychrissie

2,994 posts

268 months

Tuesday 12th July 2005
quotequote all
depends on the car and situation for me:

Ka: it seems to need to be planted quite a lot of the time fopr it to be able to make any progress at all.

racing mini on track: it has got enough power so that if you are too eager at some points you can come a bit unstuck so i am a bit more gentle.

racing elan on track: VEEEEERY careful! if you are not constantly conscious of how much power you are feeding in to the rear wheels you can find yourself going backwards quite quickly!

but i am yet to drive a powerful rear wheel drive car on the road, so i dont know about that one.

chris

Don

28,378 posts

313 months

Tuesday 12th July 2005
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Had a brilliant instructional session with a genuine Porsche Open racer at Castle Combe :

man_who_knew_what_he_was_on_about said:

When I say squeeze the throttle I mean squeeze the thottle. When I say 'GO!' I mean bury it in the carpet!


GreenV8S

31,017 posts

313 months

Tuesday 12th July 2005
quotequote all
Are you talking about how much throttle you use ('balance point' implies neither accellerating nor decellerating)?

Most cars, and certainly most TVRs, are most stable under gentle acceleration, and this is the recommended way to take corners. This also produces a 'slow in fast out' late apex approach which gives you the maximum scope to react to unexpected hazards in the corner.

But how progressively you open and close the throttle is just as important, the stability of the car is greatly improved if all controls inputs are progressive.

Coco H

4,237 posts

266 months

Tuesday 12th July 2005
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whilst having trouble with a hillclimb recently the idea of fetahering the throttle was put to me in terms that I won't forget.

kerfuffle

5,253 posts

283 months

Tuesday 12th July 2005
quotequote all
I couldn't recommend combining this technique with cadence clutching.

Wasn't our resident cadence clutcher talking about becoming a motoring writer? I can't wait to see the results!

eharding

14,648 posts

313 months

Tuesday 12th July 2005
quotequote all
On occasions, both the Griff and the Tuscan did
seem to be a little over-rich with the throttle
fully open - it felt marginally quicker with the
pedal a tad shy of fully down.

BliarOut

72,863 posts

268 months

Tuesday 12th July 2005
quotequote all
My old C50 used to respond well to cadence acceleration.... But then again what do you expect with only 50cc's to play with.

Rude-boy

22,227 posts

262 months

Tuesday 12th July 2005
quotequote all
theexcession said:

Rude-boy said:
... then I do plant it for overtaking as it engages the kick-down.


Yup, that's a given, but would you ease off to find the balance point again?


Although purely for economy reasons, why dump more fuel than you have to?

gemini said:
in corners throttle should be "balanced" - constant acceleration - until the corner begins to unwind - then feed in the power?


Sort of, you are quite correct, imvho, at the point when you start to feed the power back on the best way to do so is in a smooth and controlled manor, making the best use of all available power, torque and grip. Up to that point you are usually on the brakes though, or on trailing/light throttle.

theexcession said:

Indeedy, I also seem to have some success dealing with moderate crosswinds whilst cornering on motorways in a high sided vehicle (Land Cruiser) by using the throttle, though I guess most of this could subconsciously be coming from the steering wheel.


One of the great black arts of driving a car, or indeed riding a bike, swiftly is understanding how a car can be steared 'on the throtle'. As many an ex 205 owner will tell you. (very few of those ever got written off as a result of front end damage...)

theexcession

Original Poster:

11,669 posts

279 months

Tuesday 12th July 2005
quotequote all
Rude-boy said:
One of the great black arts of driving a car, or indeed riding a bike, swiftly is understanding how a car can be steared 'on the throtle'. As many an ex 205 owner will tell you. (very few of those ever got written off as a result of front end damage...)


as an ex 205 driver I know what you mean, the lift off over steer on those could be quite extreme, I guess that's where having your foot on the 'balance' point applies to what I'm describing, the abillity to add or remove power to the wheels in small doses without the on/off type scenario and the massive suspension unloads that take place.

I remember vividly one day out in the Supra, booting it out of a second gear corner, when the back end let go the automatic gear box just leapt up through the gears and made the problem even worse. It wasn't until we'd completed a 720 that I finally got arround to figuring what had gone wrong - when the same lampost went past for the second time I just let go of everything. Not a pleasant lesson to learn on the Queen's highway and fortunately no other vehicles were involved.

On a bike it's even more critical, getting to the point where the back wheel has just started to spin up is a glorious feeling. Difficult to explain, but everything seems to tighten up yet go soft at the same time - if you can follow what I mean.

best
Ex

theexcession

Original Poster:

11,669 posts

279 months

Tuesday 12th July 2005
quotequote all
BliarOut said:
My old C50 used to respond well to cadence acceleration.... But then again what do you expect with only 50cc's to play with.


In my experience C50's respond even better to the Flintstones approach to accelerating