How a radial engine works
Nice work!
He forgot to add the caveat that it's four-stroke, single-row radials that require an odd number of cylinders. Two-strokes can deal with even numbers (and odd numbers)
He forgot to add the caveat that it's four-stroke, single-row radials that require an odd number of cylinders. Two-strokes can deal with even numbers (and odd numbers)
Avoid imitations
Join Date: Nov 2000
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He did a great job with that - both in making the model and explaining it. The clearest explanation of the principles of a radial I've ever seen, in fact. 
Avoid imitations
Join Date: Nov 2000
Location: Wandering the FIR and cyberspace often at highly unsociable times
Posts: 14,573
Received 419 Likes
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Seeing as he's a carpenter, where's his plane?
does a twin row run 1 cam ring or two?
Looking at this image:https://en.wikipedia.org/wiki/Pratt_...p_R-2000_2.jpg it shows the front row's pushrods are actuated from the front of the engine and the rear row's (judging by the orientation of its rocker covers) are actuated from behind it, so needing two cam rings.
Edit: here's a better picture of a four row cutaway. You can see each row has a cam ring https://en.wikipedia.org/wiki/Pratt_...ry_cutaway.jpg, although between row ones are shared, which means that effectively each row has a cam ring on each side, driving either inlet or exhaust valves.
