Opposed-piston, opposed-cylinder engine

**paturoa** · 10th March 2009, 18:14

Not a new idea, but I haven't seen that layout before.

Over the years the triangular config would also be one of the more common layouts (referrerd to above) but I think also used in planes from memory.

**cave weta** · 10th March 2009, 19:15

Years ago I bought a hillclimb special that in the past had a two litre johnson V4 outboard powerhead.
I tried to re- engine it with a TS3 and Celica box. byt I lost it in a workshop fire that came through the wall.

**Edbear** · 10th March 2009, 19:24

Originally Posted by Motu

I think you will find all opposed piston engines are 2 stroke diesels...although with direct injection a 2 stroke petrol would work too.

The TS3 was only 202cu in,same as an HQ Holden - and I have a picture in front of me of a TS3 powered Commer CB stock truck pulling a 2 axle trailer and a box over the cab loaded with sheep.I doubt if a 202 Holden could pulled that combo empty down hill,let alone loaded and pull it over the Kaimai's

I grew up to the sound of TS3's and my father was a big fan of them,and once worked at a Commer dealer so he could work on them more.My uncle also had a TS3 stock truck.The TS3 was disapearing when I was working on trucks in the '70's,but I did get to do a bit on them.....and more importantly to drive them and revell in the glorious noise.

"Glorious"? Last one I saw I think was in Warkworth, turning right up Hill Street from the main road. I can't recall whether it had it's muffler on, but it screamed like a banshee as the driver hurried it down through as many gears as he had to maintain momentum.

Originally Posted by cave weta

Years ago I bought a hillclimb special that in the past had a two litre johnson V4 outboard powerhead.
I tried to re- engine it with a TS3 and Celica box. byt I lost it in a workshop fire that came through the wall.

Ah, the old 2-stroke outboard trick! There were a lot of these homebuild's around and some of them seemed to work okay but ultimately weren't successful.

**Pussy** · 10th March 2009, 20:23

Originally Posted by Motu

I think you will find all opposed piston engines are 2 stroke diesels...although with direct injection a 2 stroke petrol would work too.

The TS3 was only 202cu in,same as an HQ Holden - and I have a picture in front of me of a TS3 powered Commer CB stock truck pulling a 2 axle trailer and a box over the cab loaded with sheep.I doubt if a 202 Holden could pulled that combo empty down hill,let alone loaded and pull it over the Kaimai's

I grew up to the sound of TS3's and my father was a big fan of them,and once worked at a Commer dealer so he could work on them more.My uncle also had a TS3 stock truck.The TS3 was disapearing when I was working on trucks in the '70's,but I did get to do a bit on them.....and more importantly to drive them and revell in the glorious noise.

The three cylinder assemblies on the TS3 phased at 120 degrees, Motu?

Almost a shame there are bugger all of them around now... I have childhood memories of the distinctive sound

**pete376403** · 10th March 2009, 20:47

Junkers or Dornier used the same design (but vertical) as a bomber engine in WWII.

AFAIK the Napier Deltic was/is the only triangular layout. Originally a Motor torpedo boat motor, then used in locomotives, and then they ended up in the "Nasty" class boats in Vietnam ("Apocalypse Now", water skiing up the river)
Nice model here http://craftsmanshipmuseum.com/tomlinson.htm
and an animation of the engine here http://www.wis.co.uk/justin/deltic-engine.html

Apparently there was a TS4 as well, but never got past protoype stage and then was axed to protect the deal between Chrysler and Cummins http://www.commer.org.nz/Commer_Conn...TS4_Motor.html

And finally I think TS refers to Tilling Stevens rather than Two Stroke

**James Deuce** · 10th March 2009, 20:56

**wbks** · 10th March 2009, 20:58

Originally Posted by Edbear

Ah, the old 2-stroke outboard trick! There were a lot of these homebuild's around and some of them seemed to work okay but ultimately weren't successful.

Like the one that managed second in the world GP