8 cylinder radial

I was always intrigued by how they worked out the firing order but now I know it makes sense (I think 😀 Clear as mud)

Stumbled across this on YouTube and vaguely remembered this thread…..enjoy! 😀

http://www.youtube.com/watch?v=4hWZ40120BQ&feature=related

Now would resurrecting the ‘Technical Teaser’ thread be too much of a zombie? :rolleyes:

… but after 3 years owning a Standard Libelle I found it a bit like a Ka8,nothing wrong with Ka8’s of course,an outstanding little glider!!

I’ve flown the preceeding “wooden wonder” from Rudi Kaiser and Schleicher, the Ka6Cr and Ka6E. I loved both of them. I don’t remember having flown the K8 but it seemed to be a “step backwards” in terms of performance. Today, it doesn’t matter since I no longer will fit in any of them. I have to fly an ASW27 and an ASW28-18E instead … 🙁 … !

I and a copule of friends visited Schleicher in Poppenhausen a few weeks ago. We flew the ASK-21Mi, the new self launching version with a Diamond Wankel. A nice experience and very easy to handle.

Christer

Hi Christer
Sorry i am not much of an engine man,never did like 2 strokes much,I was a BSA 650 /Triumph Tiger 750 rider when I had Black Hair:D
The Konig engine was fitted to the AMF Chevvron microlight motorglider and was really quiet.A friendly guy at Old Sarum kindly flew me in one,but after 3 years owning a Standard Libelle I found it a bit like a Ka8,nothing wrong with Ka8’s of course,an outstanding little glider!!

Cheers Baz

Konig SD 570 4cyl 2 stroke 32 hp

A 2 stroke engine fires each cylinder on every revolution and I assume that the firing order would be “non-skip”, just fire them one after the other.

Do you know how it is aspirated? Can’t be the “normal” 2 stroke way by crankhouse compression by the downgoing piston, right?

Christer

Edited: It seems like “2 stroke” is the common denominator when it comes to radial engines with an even number of cylinders in each row. I don’t know for sure (have found no description on the web) but I can’t figure out “how else”.

What would be the firing order for a 4 pot radial then !!??
good old 1342 or perhaps 1432,have flown behind one and dont remember it being particularly vibratory…or is that because it was a small engine!!;)

Konig SD 570 4cyl 2 stroke 32 hp

570 cc’s of pulsating power:D

Aha, now I understand, thank you. I was always intrigued by how they worked out the firing order but now I know it makes sense (I think:D Clear as mud)

The radial fires “around the clock”. With an uneven number of cylinders in each row it will “fire and skip” and the order for a nine cylinder single row radial is 1-3-5-7-9-2-4-6-8 in two revolutions. A radial with an even number of cylinders in each row will not be able to “fire and skip”.

A lot more in the old thread Technical Teaser.

Christer

That’s something I’ve never figured out. Why are the majority of radials odd numbers of cylinders? I can understand a 9 cylinder but 5 & 7 make no sense, at least 360 is divisible by 9.

8 cylinder

thank you for your replys. You lean somthing new each day.

Good spot CD. There was also this thread to, which I recall.
http://forum.keypublishing.co.uk/showthread.php?t=71104

No problem!

Read the thread below and then I’d suggest you PM ‘barnstormer’.

http://forum.keypublishing.co.uk/showthread.php?t=71177&highlight=cylinder+radial

Next question! 🙂