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M. Parsons

ETS Electric Bus testing

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On 7/30/2020 at 12:24 PM, Bus_Medic said:

Dual hub motors on the rear axle. The weight savings come from dispensing with the differential and driveshaft.

Makes sense - I couldn't figure out how they would get power to the front wheels on a low-floor bus.

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4 minutes ago, InfiNorth said:

Makes sense - I couldn't figure out how they would get power to the front wheels on a low-floor bus.

In theory it could be done with in hub motors, but I’ve never come across anyone who’s bothered to make one for a steer axle yet.

Powered B axles on articulating buses are now available on trolley, and hypothetically battery and hybrids.

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On 7/30/2020 at 8:24 PM, Bus_Medic said:

Dual hub motors on the rear axle. The weight savings come from dispensing with the differential and driveshaft.

It's interesting to note the contrast between the single motor version, which uses a permanent magnet motor (i.e. synchronous) and the duopower version which uses induction motors (i.e. asynchronous) in the hubs. Anybody knows who supplies the motors to Proterra?

For anyone interested, this is an illustration of an electric portal axle made by ZF. It can be used for hybrids, battery or trolleybus. One big advantage is it enables continuous low floor gangway, rather than a step up at the back of the bus. 

https://www.zf.com/products/en/buses/products_40128.html

 

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8002 pulled out of Centennial Garage just before 11:00am today to run on block 15-06 and restart the electric bus era on Edmonton streets.

I caught up with the bus at Century Park when it was running as a 74.

To the best of our knowledge this was the only electric bus to run today, however, due to a Smart Bus issue that occured sometime around 8 or 9am drivers couldn't log into their runs, and hence there were a lot of ghost buses on T55. It's possible another electric bus escaped, but, it's also quite likely no others did. Comments in the media from this morning seem to indicate they'll ramp up the buses 3-4 at a time each day. I guess we wait and see what hits the road tomorrow. The comments also made it sound like Andrews wasn't quite ready yet. That would limit the number of buses on the road anyways since Centennial has limited chargers. 
DSC08192a.thumb.jpg.4cd8fa2b2d613cd0d63457424eb3eab0.jpgDSC08197a.thumb.jpg.2e7d40ebf8370d7a129c081361e16242.jpgDSC08202a.thumb.jpg.fbba9a12c9deb7ed64cff733bd511fa0.jpg

 

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2 hours ago, M. Parsons said:

8002 pulled out of Centennial Garage just before 11:00am today to run on block 15-06 and restart the electric bus era on Edmonton streets.

I caught up with the bus at Century Park when it was running as a 74.

To the best of our knowledge this was the only electric bus to run today, however, due to a Smart Bus issue that occured sometime around 8 or 9am drivers couldn't log into their runs, and hence there were a lot of ghost buses on T55. It's possible another electric bus escaped, but, it's also quite likely no others did. Comments in the media from this morning seem to indicate they'll ramp up the buses 3-4 at a time each day. I guess we wait and see what hits the road tomorrow. The comments also made it sound like Andrews wasn't quite ready yet. That would limit the number of buses on the road anyways since Centennial has limited chargers. 
DSC08192a.thumb.jpg.4cd8fa2b2d613cd0d63457424eb3eab0.jpgDSC08197a.thumb.jpg.2e7d40ebf8370d7a129c081361e16242.jpgDSC08202a.thumb.jpg.fbba9a12c9deb7ed64cff733bd511fa0.jpg

 

This block was all over the T55 map today, showing up as the 74, 15, and 8. Admittedly, seeing the block on the 15 and 8 made scout Connors Rd for the better part of an hour, though it's more likely that it stayed mostly south of the Whitemud

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On 8/1/2020 at 7:26 AM, martin607 said:

It's interesting to note the contrast between the single motor version, which uses a permanent magnet motor (i.e. synchronous) and the duopower version which uses induction motors (i.e. asynchronous) in the hubs. Anybody knows who supplies the motors to Proterra?

For anyone interested, this is an illustration of an electric portal axle made by ZF. It can be used for hybrids, battery or trolleybus. One big advantage is it enables continuous low floor gangway, rather than a step up at the back of the bus. 

https://www.zf.com/products/en/buses/products_40128.html

 

The single motor is supplied by UQM and drives through an Eaton gearbox.
 

Not sure who supplies the motors for the Duopower version. The axle was designed by Axletech, which sold their electric power segment to Allison last year.

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On 8/4/2020 at 10:06 PM, M. Parsons said:

8002 pulled out of Centennial Garage just before 11:00am today to run on block 15-06 and restart the electric bus era on Edmonton streets.

I caught up with the bus at Century Park when it was running as a 74.

To the best of our knowledge this was the only electric bus to run today, however, due to a Smart Bus issue that occured sometime around 8 or 9am drivers couldn't log into their runs, and hence there were a lot of ghost buses on T55. It's possible another electric bus escaped, but, it's also quite likely no others did. Comments in the media from this morning seem to indicate they'll ramp up the buses 3-4 at a time each day. I guess we wait and see what hits the road tomorrow. The comments also made it sound like Andrews wasn't quite ready yet. That would limit the number of buses on the road anyways since Centennial has limited chargers. 
DSC08192a.thumb.jpg.4cd8fa2b2d613cd0d63457424eb3eab0.jpgDSC08197a.thumb.jpg.2e7d40ebf8370d7a129c081361e16242.jpgDSC08202a.thumb.jpg.fbba9a12c9deb7ed64cff733bd511fa0.jpg

 

Those rear taillights remind me of the old old Fishbowls taillights:

This is what the TTC's old Fishbowl buses looked like

56 minutes ago, 2044 said:

The axle was designed by Axletech, which sold their electric power segment to Allison last year.

I wonder if that has anything to do with this:

https://www.electrichybridvehicletechnology.com/news/buses-commercial-vehicles/allison-transmission-and-alexander-dennis-to-collaborate-on-ev-double-decker-bus.html

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5 hours ago, Phillip said:

Do anyone have pictures from the inside? I would sure like to see more details....  

Here’s my pic of the inside of 8017. This is what the interior looks like from the rear.

A56186D3-8050-4C38-9375-130C483BEE74.jpeg

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11 hours ago, M. Parsons said:

DSC08238.thumb.jpg.58dc5e00621900f9d7733b4c382b2009.jpg
'nother interior.

Kind of a weird spot to put the next stop display. Usually it's placed on the very top near the ceiling (bulkhead). Although I do like how Edmonton incorporated their stop request buttons into the Smart Bus system. 

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1 hour ago, Matt Dunlop said:

Kind of a weird spot to put the next stop display. Usually it's placed on the very top near the ceiling (bulkhead).

If one is sitting at the front the next stop display is not visible when it is on the bulkhead. The forward position is preferable IMO.

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3 hours ago, captaintrolley said:

If one is sitting at the front the next stop display is not visible when it is on the bulkhead. The forward position is preferable IMO.

Can't say I agree - Having grown up in Vancouver and now with Victoria having a similar system, both with the displays at the beginning of the passenger compartment, it works perfectly fine. It's one of those things that you expect to be a problem until you experience it, and you realize it's not in any a problem for visibility. 

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8004 and 8007 are now the first in the blue to hit the road, 8007 during the AM peak, 8004 during the pm peak. Total of 6 electric runs today, 2 AM peak, 1 midday, 3 PM peak. A total of 6 buses have seen service, 8008 has only done one block so far. Only 7 buses are in the blue and silver of the first 21 delivered.

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8004 and 8007 in blue. 8007 at 101 St and Jasper, the heart of the former trolleybus system. All routes passed through this intersection.

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Speaking of electric traction... a number of battery electric vehicles in this shot.

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Artsy fartsy low angle on 8017 at Government Centre. 

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