'Drive' or 'Neutral' at traffic lights?

Technical questions and answers about the Mazda Bongo

Moderators: Doone, westonwarrior

ebygum32

Post by ebygum32 » Wed Jan 30, 2008 1:47 pm

If the traffic lights are green i leave mine in drive :wink:

If the traffic lights are red i leave mine in park and put the handbrake on unless i have a boy racer along side then it's left in drive and all he sees is my hand waving goodbye at him :lol:

I don't see how anyone can have a problem thinking they will put it in reverse when they set off, all you gotta do is pull the gear lever as far back as it goes and you are in first then change up through the gears when you are driving
Magwa
Bongolier
Posts: 233
Joined: Tue Jul 24, 2007 3:31 pm
Location: llanbrynmair Wales

D = drive or ready to drive

Post by Magwa » Wed Jan 30, 2008 2:24 pm

leave it in D as all modern auto boxs are designed to be driven that way.
only if you clearly are not going anywhere for many minutes is it worth taking out of drive.

Im :shock: that anybody needs to ask!
Live long die oblong
trevd01

Post by trevd01 » Wed Jan 30, 2008 9:00 pm

ebygum32 wrote: If the traffic lights are red i leave mine in park and put the handbrake on
People who put it into neutral I can almost understand - I suppose, just about. Nothing dangerous about it, just unnecessary.

But Park! Wrong, wrong,wrong. Have you been near Blackburn recently :?: :twisted:
patmckenna wrote:Hi Guys,

I had a phone call from a friend last night who told me that he just been Bongoed. Since he drives a VW Passat, I asked him to explain.

He was in a queue of traffic. Lo and behold, in front of him was a beautiful example of a Bongo. Oh, says he, that's one of those lovely Bongos Pat keeps shouting about. He admired its sleek lines and polished blackness.

Without warning, and for no known reason, the Bongo shot into reverse and demolished the front of the Passat, causing what may be terminal damage...

I wanted to explain to my friend that being Bongoed actually meant being recognised and pointed at/waved at hysterically - but decided that the time wasn't just right.

The Bongo chap 'held his hands up' to the misdemeanour and the insurance companies are busy talking to each other.

Next time I visit my friend in a little town not far from Blackburn, I'm travelling in the Aygo.

Pat McKenna
http://www.igmaynard.co.uk/bongo/forum/ ... highlight=
ebygum32

Post by ebygum32 » Fri Feb 01, 2008 10:57 am

Yes i have just been told by my mate not to leave it in park because if i get shunted from behind and i am in park it will snap the park pin off in the gear box
Colin Lambert

Post by Colin Lambert » Fri Feb 01, 2008 1:28 pm

Well I am going to add even more confusion now.
My new Nissan Qashqai has a CVT tiptronic gear box and it is W I E R D !
9 times out of 10 when I take my foot OFF the accelerator and therefore go into an 'overrun' situation the revs go UP!.
If I am in 'D' at about 60 and I knock it across to the tiptronic position it will be in 6th gear and the revs shoot up about 1000????
At traffic lights if I knock it into 'N' you can feel the car 'heave a sigh' and sort of unwind, so gear box wear or not it must be trying to pull if left in 'D' and it does 'creep' more than a normal auto box.
so saying the CVT nissan box does MORE to the gallon than the manual with the same engine and number of driven wheels (2 in my case). Any thoughts on that lot??
trevd01

Post by trevd01 » Fri Feb 01, 2008 3:03 pm

A CVT gearbox does not have any gears as such. So unlike a conventional auto the 'gears' in the tiptronic are effectively 'virtual' i.e. they are steps programmed in some way. So the virtual sixth gear may be set/programmed as lower than the highest the CVT can reach when left alone.

(Not sure I have explained that perfectly)

I belive it to be similar to the multitronic gearbox offere by Audi
Wikipedia wrote:In 2000 Audi launched a new stepless transmission called multitronic. Based on the principles of Continuously Variable Transmission (CVT) popularised by DAF, multitronic offers a stepless automatic transmission in which the ratio between the input shaft and output shaft can be varied continuously within a given range, providing a very large number of possible ratios. The multitronic system uses a chain-drive, an oil cooled multiplate clutch (initially of six parts, later of seven to enable it to cope better with the torque of larger turbodiesel engines, and complex electronics to overcome the traditional shortcomings of CVTs.

The transmission is monitored and regulated by Audi's Dynamic Regulating Program (DRP), which tracks the driver's inputs, driving conditions, and engine load to compute the optimal gear ratio for fuel efficieny or maximum performance, as mandated by the user. The transmission can select pre-programmed underdrive to increase performance, or overdrive to improve economy. From 2004 multitronic gearboxes offered manual selection of a sport mode to pre-select the performance mapping. The electronic system also includes sensors to detect whether the vehicle is traveling downhill and provides additional engine braking in such circumstances. Multitronic also offers a number of driver-selectable fixed rations, selectable from either the gear-lever in a sequential style, or via (optional) fingertip controls. Early versions offered 6 ratios, from 2004 this was increased to 7. Some A6 variants that feature the Multitronic gearbox are now equipped with the fingertip controls as standard. These controls can also switch to semi-automatic mode when one of the paddles is activated, however they revert to fully automatic after a few seconds.

Multitronic offers performance and economy similar, and in some cases better than, the equivalent six-speed manual gearboxes, and greatly superior to traditional geared automatic transmission. Particular performance advantages are noticed in 'in-gear' acceleration times over equivalent manual transmission cars.

Multitronic is offered on front wheel drive versions of the Audi A4 and Audi A6 It is not compatible with the quattro (all wheel drive system) or transverse engine in the Audi A3. At first the torque limit was 310Nm, but the gearbox is now modified to withstand 400Nm torque.
Colin Lambert

Post by Colin Lambert » Fri Feb 01, 2008 7:23 pm

Thanks for that Trev,
I did of course know that CVT was grand son of the DAF 'rubber band' (slip in the wet) transmission. But the Audi explanation takes it to a further level. It sounds remarkably like the Squashed Cow (Qashqai) transmission. (I wonder if they have collaborated?) It is certainly far more responsive than the Saab 9-3 auto box. In fact I would say that even at nearly 2 tons the Squashed Cow 2.0L CVT (non Turbo) is quicker than the Saab 9-3 2.0L auto LPTurbo.
moonshine

Post by moonshine » Fri Feb 01, 2008 11:57 pm

So many different gearbox variations! Tomorrow I will be driving a 1952 Double decker bus with pre-select transmission. That has an air operated gear selector, three pedals, but no clutch. :?

I will be putting that into neutral at traffic lights, as idling in gear for more than necessary causes the fluid-flywheel to overheat. Same thing doesn't apply to torque converters, fortunately.
last_tuesday

Post by last_tuesday » Sat Feb 02, 2008 11:47 am

That would be the gearbox designed by Major Wilson then. 4 speed pre-select epicyclic.

They were also fitted to some Riley & Lanchesters.
moonshine

Post by moonshine » Sat Feb 02, 2008 11:41 pm

Spot on. Had a good day out with the bus, and I think my passengers did too. :lol: Picked it up in Amersham and drove to Epping and back.

I also remember driving an Armstrong Star Sapphire with a similar gearbox many years ago. That one was electrically operated though.
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