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Go Back   Railway Forum > Diesel & Electric > Diesel & Electric Discussion

Australian Tri-Bo locomotive.

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  #1  
Old 13th April 2019, 12:11
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Australian Tri-Bo locomotive.

Until Steve mentioned it on a gallery comment I'd never heard of Tri-Bo locomotives.

Some photos.

https://www.ardp.net/topic66.html


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Old 13th April 2019, 20:48
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Plenty of "Tri-Bo's" in Switzerland. Known as Re6/6.

https://www.railwayforum.net/gallery...r&imageuser=40

Closer to home the Channel Tunnel shuttle locos are also Tri-Bo.
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Old 14th April 2019, 08:17
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The Tri-Bo is mostly a narrow gauge contraption.
A number were built for Japan and also Kiwiland for the 3 foot 6 inch.
The advantage of a tri-bo over a standard Co-Co being that flange wear should be reduced.
The middle bogie is normally floating.
The QR electric locos are tri-bos, again for 3 foot six inch.
With almost constant curves on the NSW Blue Mountains, it was believed that the tri-bo design would provide for less flange wear and wheel creep.
But, I can attest that 8650 did yaw and sway all over the place.
Quick give me the sea sick pills.
It was never adjudicated as to whether the tri-bo design performed any better.
Sadly, as with most of our once magnificent electric loco fleet, 8650 is shoved out at Broken Hill rusting to the rails.
Steve.
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Old 14th April 2019, 09:34
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Just uploaded a photo of 8650 at LMC Lithgow in 1990.
The only tri-bo on the NSWR.https://www.railwayforum.net/gallery...1_dec_1990.jpg
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