Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 


Wheel dampers next step to reduce J'ville line squeal noise

Media release from Greater Wellington Regional Council

18 March 2013

Wheel dampers next step towards reducing wheel squeal noise on Johnsonville Line

A trial of wheel dampers, which reduce noise radiation, on two trains next month is the next step towards trying to reduce the wheel squeal noise on parts of the Johnsonville Line, says Fran Wilde, Chair of Greater Wellington Regional Council.

The noise emerged after the new Matangi trains began running regularly on the Johnsonville Line just on a year ago.

The squealing noise is created when the wheels of the train manoeuvre through some tight corners. “The old English Electrics that used to run on the line generated more noise but it is the high-pitched tone of this particular noise that is literally getting on some people’s nerves.

“Wheel squeal issues are not uncommon on rail lines around the world, so we were able to engage some rail experts experienced with these issues. They investigated the exact cause of the problem and developed a range of possible solutions for us. We’re now trialling the two top solutions.”

Fran Wilde says over the last few months a friction modifier material has begun to be applied to the track on some parts of the line to modify the steering performance of the wheel sets on tight curves. The material is then distributed, via the wheels of the train, further along the line. “This is having varying levels of success – some trains are less noisy but others aren’t. Staff are currently investigating ways to increase coverage of the friction modifier to reduce the noise all along the line.”

From next month wheel dampers - devices that reduce the radiation of noise - will be trialled on the wheels of two trains.

“Hopefully the greater spread of friction modifier on the track and the effect of the wheel dampers should significantly reduce noise levels.

“I appreciate the distress the wheel squeal noise is causing to some residents who have to put up with the noise day in and day out, but I can assure them that this is the number one priority for our rail operations staff and they are determined to find a lasting and effective resolution to this issue.”

Regional Council and KiwiRail staff will give a full update to residents at a public meeting at Ngaio Town Hall on Wednesday evening at 7.30pm.

ENDS

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

 

Parliament Today:

Werewolf: The Defence Pretence

Last year, the world began spending more money on weapons again, for the first time since 2011... New Zealand belongs to a region – Asia and Oceania – where military spending rose sharply in 2015, by 5.4 per cent. More>>

ALSO:

Gordon Campbell: On Not Crying Foul, Argentina

So a couple of guys found to be criminally liable of environmental pollution in Argentina lodge an application with the Overseas Investment Office… in order to buy some prime New Zealand rural land. Seems that their factory back home had carelessly and/or intentionally discharged toxic waste into the Lujan river. Bummer... More>>

ALSO:

Urban & Rural: $303m To Merge And Modernise New Zealand’s Fire Services

Internal Affairs Minister Peter Dunne today announced funding of $303 million over five years to combine urban and rural fire services into one organisation from mid-2017. More>>

ALSO:

High Trust Regime: What Did The PM Tell His Lawyer About Foreign Trusts?

The Government stopped the IRD from reviewing New Zealand foreign trusts shortly after the Prime Minister’s lawyer wrote to the Revenue Minister claiming John Key had promised him the regime would not be changed. More>>

ALSO:

Road Crime: Wicked Campers Vans Classified As Objectionable

The definition of publication includes any "thing that has printed or impressed upon it, or otherwise shown upon it, 1 or more (or a combination of 1 or more) images, representations, signs, statements, or words", The Classification Office has previously classified such 'things' as billboards, t-shirts, and even a drink can. This is the first time the Classification Office has classified a vehicle. More>>

ALSO:

'When New' Repairs: Landmark EQC Settlement

The Earthquake Commission has cut a deal with 98 Canterbury homeowners that affirms the government entity's responsibility to repair earthquake-damaged property to a 'when new' state, as well as covering repairs for undamaged parts of a property and clarifying its position on cash settlement calculations. More>>

ALSO:

Gordon Campbell: On Kiwirail’s Latest Stint In The Dogbox

The denigration of Kiwirail continues. The latest review (based on a 2014 assessment) of the options facing the company have enabled Kiwirail to be hung out to dry once again as a liability and burden on the taxpayer. More>>

ALSO:

Royal Society Report: Good Opportunities To Act Now On Climate Change

There are many actions New Zealand can and should take now to reduce the threat of climate change and transition to a low-carbon economy, a report released today by the Royal Society of New Zealand finds... More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news