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:

Flyover Over: NZTA Not Appealing Flyover Decision

The NZ Transport Agency has decided not to appeal the High Court’s Basin Bridge decision, and says the High Court’s findings provide valuable clarity to help guide the development of future infrastructure projects throughout the country. More>>

ALSO:

Developing Crown Land: Government, Auckland Iwi Reach Agreement

The government has reached agreement with Ngati Whatua and other Auckland iwi over developing 500 hectares of excess land in Auckland for private housing which had been under High Court challenge. More>>

ALSO:

Gordon Campbell: On Maurice Williamson

Maurice Williamson seems to have been granted an annual licence to embarrass the National Party, and its that time of year again. Also as per usual, Williamson’s recent exercise in sexism and homophobia has passed by with barely a murmur from his leader. More>>

ALSO:

Green Climate Plan: Shaw Launches 40% Emission Cut Target

Green Party co-leader James Shaw has announced an emissions target initiative for 40% reduction by 2030. He said agriculture has to long been used as a reason for inaction, a roadblock to action... He proposed a tax of 8 cents per kilo of milk. More>>

ALSO:


Images & Video: Four Alternative Flags For Referendum

Flag Consideration Panel chair, Professor John Burrows, said the Panel’s decision had been guided first and foremost by the results of its engagement programme across a range of communities where thousands of Kiwis shared what was special about New Zealand, as well as the Panel’s own selection criteria. More>>

ALSO:

Transport Report: LGNZ Calls For Proactive Approach To Mobilise Regions

LGNZ has today released Mobilising the Regions, its major transport study, which highlights the economic and social impact of strategic transport decisions nationally and in the regions, and the direct link between regional development, national prosperity, social well-being and cohesiveness. More>>

ALSO:

Transport: New Rules Bring Double-Deckers To Our Cities

New rules that allow buses, including double-deckers, to carry more people will ramp up the public transport offering in our cities, Transport Minister Simon Bridges and Associate Transport Minister Craig Foss say. More>>

ALSO:

Cycling:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news