[LISTEN] Motoring: What is an overdrive and why would you need it?

Technical Editor at CAR Magazine Nicol Louw has done some research and writing on what is termed an "overdrive" in a transmission.

Early vehicles came with an overdrive, is this still the case and why would you need an overdrive in the gearbox?

Our older listeners would know, 40 or 50 years ago, cars would come with three and four speed transmissions and you would get the option of overdrive...

Nicol Louw, Technical Editor at CAR Magazine

With modern transmission you do not get an extra box added to the gearbox....the older transmission there was actually a separate little transmission bolted to the four speed transmission that gives you one extra gear which would then be your fifth gear and it's called overdrive because the input would then be 0.8 revolutions for one output of the gearbox.

Nicol Louw, Technical Editor at CAR Magazine

The result is then that your engine speed is reduced for motorway cruising, it is better for fuel consumption, for NBH and so on.

Nicol Louw, Technical Editor at CAR Magazine

Click on the link below to listen to the full conversation....


Recommended

by NEWSROOM AI
Read More
Zakes Bantwini opens up about his latest single 'Amanga'

Zakes Bantwini opens up about his latest single 'Amanga'

The musician says he never writes songs about his personal life but this latest single is too personal for him.

Matter of Fact: South Africa does not have longest working hours in the world

Matter of Fact: South Africa does not have longest working hours in the world

Africa Check deputy chief editor Kate Wilkinson says Cambodia tops the rankings with 2,456 hours worked on average per person.

Meet the quiz mastermind behind the Dischem Brain of 702 competition

Meet the quiz mastermind behind the Dischem Brain of 702 competition

Azania Mosaka speaks to the man tasked with designing the Brain of 702 quizzes - writer Dawid Van Lill.

'The Suzuki Dzire is the perfect day-to-day runaround car' - Jacob Moshokoa

'The Suzuki Dzire is the perfect day-to-day runaround car' - Jacob Moshokoa

In the car feature, automotive journalist Jacob Moshokoa chats about his experience driving around with the Suzuki Dzire.

 In the market for a 2nd hand car? Here are some tips to buy it on a budget!

In the market for a 2nd hand car? Here are some tips to buy it on a budget!

In the car feature, our very own car guy Tumelo Maketekete shares some tips and tricks to buying a car on a R100 000 budget.

Motoring: Find out how much your vintage car could be worth

Motoring: Find out how much your vintage car could be worth

EWN motoring correspondent Jacob Moshokoa advises listeners about car valuations.

Popular articles
Meet the inspirational creative duo behind 'Tonic Design'

Meet the inspirational creative duo behind 'Tonic Design'

Greg Gamble and Philippe van der Merwe join Refiloe Mpakanyane in studio.

Fitness was a career that chose me - 'Queen Fitnass'

Fitness was a career that chose me - 'Queen Fitnass'

Mapule Ndhlovu opens up about her life journey and how exercise changed not only her body, but her mindset for the better.

EFF issues one-line apology to journos after court order

EFF issues one-line apology to journos after court order

Anton Harber and Thandeka Gqubule won their defamation case over Mbuyiseni Ndlozi's party statement implying links to Stratcom.

Ugandan climate activist accuses media of racism after Davos photo crop

Ugandan climate activist accuses media of racism after Davos photo crop

WEF youth climate delegate Vanessa Nakate was cropped out of a group pic with her white peers, also featuring Greta Thunberg.

Letting go of your child who's headed for university and independence

Letting go of your child who's headed for university and independence

Nikki Bush has valuable tips on preparing not only your school-leaver but yourself for the journey into adulthood ahead.

Right to Sight pleads for more donations to conduct cataract surgeries

Right to Sight pleads for more donations to conduct cataract surgeries

Right to Sight trustee Dr Matt Young says they get donations at the most time but now need big sponsors.

Remains of Cato Manor 9 returned on anniversary of their hanging

Remains of Cato Manor 9 returned on anniversary of their hanging

The Cato Manor 9 were hanged in 1961 by the apartheid after taking part in an uprising on 24 January 1960.

Zakes Bantwini opens up about his latest single 'Amanga'

Zakes Bantwini opens up about his latest single 'Amanga'

The musician says he never writes songs about his personal life but this latest single is too personal for him.

Unisa extends registration deadline in the wake of union protests

Unisa extends registration deadline in the wake of union protests

Unisa acting director of communications Lusani Netshitomboni says they encourage students to register online.

Jacques Nienaber confirmed as new Springboks head coach

Jacques Nienaber confirmed as new Springboks head coach

Mzwandile Stick has been reappointed as an assistant coach while in an innovative inclusion, Felix Jones will continue but in a new role as a European-based coaching consultant.