Talk:GM New Look bus

message: I edited the statement that referred to the Detroit Diesel (DDA) engine as being supercharged. Since this engine is a two-stroke design, it cannot aspirate without some means of positive induction. This is the purpose of the Roots blower.
The blower plays a dual role in this engine: it scavenges the exhaust and supplies combustion air. The blower does this by pressurizing the "air box" (a cored out passage in the engine block), which delivers air to the cylinders as the pistons are passing through bottom dead center. The air box pressure is slightly above atmospheric pressure to prevent residual combustion gas backflow into the air box and blower at the point where the piston initially exposes the air intake ports located near the bottom of the cylinder. The blower's capacity is matched to the engine displacement to deliver a suitable volume of air.
Referring to the blower as a supercharger is a common error amongst those who are not familiar with DDA engines and how they operate. There were some cases where a turbocharger was fitted to DDA engines -- the turbo pressurized the intake side of the blower, thus producing a form of supercharging. Since the blower is a positive displacement device that moves a (more or less) fixed volume of air per revolution, resulting in a fixed pressure increase, the only effect of turbocharging was to increase air box pressure above atmospheric in order to improve fuel economy and reduce exhaust emissions. The turbo could not actually increase the volume of air flow due to the behavior of the blower.
Bigdumbdinosaur 21:49, 30 October 2007 (UTC)
thread_title: Supercharger

message: I have removed a section that was completely uncited and somewhat promotional in tone.  If some of this material can be sourced, a history section is probably viable, although not precisely in this form.  Serpent's Choice (talk) 04:55, 1 December 2010 (UTC)
replies: text: Actually, in an edit conflict, someone else beat me to it.  Serpent's Choice (talk) 04:55, 1 December 2010 (UTC)
thread_title: Removed section

message: I propose that GM New Look (Toronto Transit Commission bus) be merged into this article.  That article is about the same exact bus, except it mentioned its use by the Toronto Transit Commission.  There's no reason that that extra content can't be merged into this article since the subjects are basically the same. –Dream out loud (talk) 21:58, 10 July 2013 (UTC)
replies: text: Do it. Useddenim (talk) 03:49, 12 July 2013 (UTC)
replies: text: I disagree.  These are two different articles. This article is about a type of bus that was sold to hundreds of transit systems, and with more than 44,000 built, over a period of 37 years. The other is about the history of that model's use in one city's fleet.  It is debatable whether the latter is sufficiently notable to warrant its own Wikipedia article – and the Toronto article is currently unreferenced and should be cleaned up or deleted – but merging the Toronto information into the general GM New Look bus article is not warranted and would lower the quality of this article.  Although Toronto was a major user of the GM New Look, and a very brief mention of Toronto in this article is therefore justified, any more detail than that would give undue weight to just one system, in an article about a type of bus that was used by numerous transit systems all over North America. If someone wants to merge the GM New Look (Toronto Transit Commission bus) into another article, rather than tag it for possible outright deletion, the merge should be into another article about Toronto's transit vehicles, such as Toronto Transit Commission fleet, not into a broad article such as this one. SJ Morg (talk) 08:21, 12 July 2013 (UTC)
replies: text: I know this is an old thread, but wouldn't a List of Toronto Transit Commission buses be a good idea, which could include the GM New Look TTC Buses? ---------User:DanTD (talk)  18:25, 3 May 2020 (UTC)
thread_title: Proposed merger

message: Doe anyone know how fast it goes, what the 0 to 60 time is, what the turning circle is, how frequently these had to go through maintenance at an average and any other technical info the likes of which are obviously important at a vehicle article? GMRE (talk) 12:30, 14 February 2016 (UTC)
thread_title: Missing technical info

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thread_title:  External links modified (January 2018)