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Various electric buses at TSA.

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Re: TSA Electric buses built by Gemilang Australia.

Postby tonyp » Fri Jul 12, 2019 2:32 pm

Yes that's what I recall now. So evidently there was a deliberate reasoning behind choosing the portal axle (enabling low floor) version over the standard axle (forcing high floor at the rear). I can't think of any reason for that other than they deliberately wanted a low floor. By the bye, I've often wondered, is a portal axle more costly than a standard axle (assuming no hub motors)?
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Re: TSA Electric buses built by Gemilang Australia.

Postby tonyp » Fri Jul 12, 2019 2:51 pm

Looks like they might soon be joined by the Yutong:

https://www.busnews.com.au/industry-new ... Ry3XzHo6j8
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Re: TSA Electric buses built by Gemilang Australia.

Postby Fleet Lists » Fri Jul 12, 2019 2:59 pm

Two earlier posts about this have also been moved from private observations to here including one from tonyp - will also change title of this thread.
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Re: TSA Electric buses built by Gemilang Australia.

Postby Tongans101 » Fri Jul 12, 2019 7:23 pm

tonyp wrote:Yes that's what I recall now. So evidently there was a deliberate reasoning behind choosing the portal axle (enabling low floor) version over the standard axle (forcing high floor at the rear). I can't think of any reason for that other than they deliberately wanted a low floor. By the bye, I've often wondered, is a portal axle more costly than a standard axle (assuming no hub motors)?



Yes, portal axles are more expensive and heavier too. Even without hub motors.
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Re: Various electric buses at TSA.

Postby Daniel » Fri Jul 12, 2019 9:31 pm

The Yutong has been at TSA Leichhardt since Tuesday.
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Re: TSA Electric buses built by Gemilang Australia.

Postby tonyp » Sat Jul 13, 2019 9:18 am

Tongans101 wrote:
Yes, portal axles are more expensive and heavier too. Even without hub motors.

SInce the purpose of a portal axle is to enable low floor, one could be forgiven for asking why one would fit a more expensive and heavier bit of kit if it's not going to be used for the purpose for which it's designed!
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Re: TSA Electric buses built by Gemilang Australia.

Postby Tongans101 » Sat Jul 13, 2019 7:36 pm

tonyp wrote:
Tongans101 wrote:
Yes, portal axles are more expensive and heavier too. Even without hub motors.

SInce the purpose of a portal axle is to enable low floor, one could be forgiven for asking why one would fit a more expensive and heavier bit of kit if it's not going to be used for the purpose for which it's designed!


Not sure what your point is, if indeed you are trying to make one.

1. You can't fit hub motors to a standard axle.
2. The BYD chassis has hub motors on its portal axle
3. All the batteries required to meet customer requirements cannot be all fitted to the roof and so are fitted behind the rear axle. Ergo no low floor.
This has all been explained in previous posts.
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Re: TSA Electric buses built by Gemilang Australia.

Postby tonyp » Sat Jul 13, 2019 8:01 pm

Tongans101 wrote:
Not sure what your point is, if indeed you are trying to make one.

1. You can't fit hub motors to a standard axle.
2. The BYD chassis has hub motors on its portal axle
3. All the batteries required to meet customer requirements cannot be all fitted to the roof and so are fitted behind the rear axle. Ergo no low floor.
This has all been explained in previous posts.

Your points 1 and 2 answer the question in respect of the BYD thanks. This is the information I was looking for. Not all low floor electric buses have hub motors (see drawings below). What about the Yutongs?

https://www.skoda.cz/data/catalog/6/73/3814.pdf
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Re: TSA Electric buses built by Gemilang Australia.

Postby Tongans101 » Tue Jul 16, 2019 12:58 pm

tonyp wrote:
Tongans101 wrote:
Not sure what your point is, if indeed you are trying to make one.

1. You can't fit hub motors to a standard axle.
2. The BYD chassis has hub motors on its portal axle
3. All the batteries required to meet customer requirements cannot be all fitted to the roof and so are fitted behind the rear axle. Ergo no low floor.
This has all been explained in previous posts.

Your points 1 and 2 answer the question in respect of the BYD thanks. This is the information I was looking for. Not all low floor electric buses have hub motors (see drawings below). What about the Yutongs?

https://www.skoda.cz/data/catalog/6/73/3814.pdf


I don't think I said that all low floor buses had hub motors. They do all have portal axles which are still heavier than "conventional" axles. Don't know about the Yutongs. I know the model being trialled is not the latest version.
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