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

 

Gordon Campbell: On Bank Scandals (And Air Crashes)

Last month, the Australian Securities and Investment Commission (ASIC) filed proceedings against Westpac over activities that have some distinct echoes of the Libor scandal. More>>

Budget: Health Funding Must Keep Up With Need

NZNO: “The nursing team has been doing more with less for years. It’s getting to the point that we’re really worried about our colleagues, our patients, our jobs and the level of health care available for people in our country." More>>

ALSO:

Emissions Inventory: Time For The Government To Do The Right Thing

It’s time for the National Government to step up and do the right thing to reduce climate pollution as data shows New Zealand’s greenhouse gas emissions are higher than ever, the Green Party said today. More>>

ALSO:

Budget 2016: More Partnership Schools To Open

Seven new schools will join the eight Partnership Schools already open, along with further new schools opening in 2017. “The growth of this policy is a reflection of the high level of interest from educators and community leaders,” Mr Seymour says. More>>

ALSO:

No Correspondence With English: Did Brownlee Make Up Sale Of Navy Ships ‘On The Hoof?’

Having revealed that several Royal New Zealand Navy vessels have not left port in years, New Zealand First is now asking the Minister of Defence to prove he did not come up with the idea of selling HMNZS Taupo and Pukaki until the media asked him. More>>

Housing Plans: Labour- Abolish Auckland Urban Boundary
The Government should rule out any possibility of an urban growth boundary in Auckland Council’s Unitary Plan if it is serious about fixing the housing crisis. More>>
Greens - State House Solution
The Homes Not Cars policy allows Housing New Zealand to retain its dividend and, in addition, would refund its tax, to spend on the emergency building of around 450 new state houses. More>>

ALSO:

Houses And Taxes: Post-Cabinet, Pre-Budget Press Conference

The Prime Minister said that the pre-budget announcements showed that his Government is “investing in a growing economy”. He re-affirmed the National Government’s commitment to lowering personal tax rates but that any such change must fit with the fiscal reality of the time. More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news