Talk:Napier Sabre

From Wikipedia, the free encyclopedia

	This article is within the scope of the Aviation WikiProject. If you would like to participate, please visit the project page, where you can join the project and see lists of open tasks and task forces. To use this banner, please see the full instructions.	Aviation Portal
Start	This article has been rated as Start-Class on the quality scale.
Additional information and associated projects or task forces: This article has been checked against the following criteria for B-Class status: Referencing and citation: not checked Coverage and accuracy: not checked Structure: not checked Grammar: not checked Supporting materials: not checked To fill out this checklist, please add the following to the template call: <!-- B-Class-1. It is suitably referenced, and all major points have appropriate inline citations. --> |B-Class-1=yes/no <!-- B-Class-2. It reasonably covers the topic, and does not contain obvious omissions or inaccuracies. --> |B-Class-2=yes/no <!-- B-Class-3. It has a defined structure, including a lead section and one or more sections of content. --> |B-Class-3=yes/no <!-- B-Class-4. It is free from major grammatical errors. --> |B-Class-4=yes/no <!-- B-Class-5. It contains appropriate supporting materials, such as an infobox, images, or diagrams. --> |B-Class-5=yes/no Aircraft WikiProject

I think there's a minor error in this article; where it talks about "the rear banks proved to be impossible to cool properly", I think it means "rear cylinders", since of course in an inline H engine the banks are described as top/bottom and left/right. However, without checking a reference, I'm loathe to change it. Noel 00:37, 3 Oct 2003 (UTC)

White's "allied aircraft piston engines of world war II" doesn't seem to specify whether the sabre was two or four stroke, but "Jane's fighting aircraft of world war II" page 278 is quite explicit that it was a four stroke. I've just read Setright's "power to fly" and don't remember him saying the sabre was a two stroke. I think the only major two strokes were Junkers diesels like the 205. Kahl 24/7/2006

It's a four stroke. If it was a two stroke it would be like the Rolls-Royce Crecy and would be even more remarkable than it already is. PeterGrecian 13:27, 24 July 2006 (UTC)

The statement that the forces from opposing pistons balance is only true where the pistons move in opposition - one moves left as the other moves right. In many flat-12s, including the H-24 Sabre, the two pistons move together - both left or both right and so the forces add rather than cancel. Peter R Hastings 13:31, 26 February 2007 (UTC)