Strange Engine...

[hobbyfarm]

I stumbled on this website about the Vietnam era <font color="blue">Nasty Class PTF boats</font>.

It had the oddest <font color="teal">engine</font> I've ever seen. Three crankshafts...

Must have been a nightmare to work on. /forums/images/graemlins/grin.gif
Kind of makes even a Wankel engine look ho-hum by comparison. /forums/images/graemlins/crazy.gif

 

[hobbyfarm]

Engine is a Napier Deltec.

No wonder those government contracts are over the top pricewise. /forums/images/graemlins/smile.gif

 

[hobbyfarm]

Could it be a two-cycle?
Four-cycle??
Zero-cycle???
One-cycle????
/forums/images/graemlins/crazy.gif

Those engineers needed to get some air that day. (but how could they get their big heads out the door?)

 

[JerryG]

That Deltic engine is very interesting. The engineering is amazing.

 

[boustany]

That engine has to be the most amazing thing I've seen since I sat through a detailed explanation of the Merlin.

 

[hobbyfarm]

</font><font color="blue" class="small">( Again, all speculation on my part. Feel free to pick it apart. )</font>

SnowRidge,
I'm not going to pick it apart, after all, your explanation sounds quite reasonable.
Funny thing is, I always thought simple wins the race, especially when speaking in terms of military equipment. But then, this was Vietnam, and simplicity had been put back on the shelf somewhere.

Here's another odd ball engine: <font color="green">The VW "W" Engine</font>

 

[hobbyfarm]

By golly, I think I've figured it out. (at least the reasoning behind it)
<font color="red">You can't blow a head gasket without heads!</font>
/forums/images/graemlins/laugh.gif /forums/images/graemlins/grin.gif

 

[SnowRidge]

<font color="blue"> (You can't blow a head gasket without heads!) </font>

Yeah, but duck when the pan gasket goes. /forums/images/graemlins/grin.gif /forums/images/graemlins/laugh.gif /forums/images/graemlins/grin.gif /forums/images/graemlins/laugh.gif /forums/images/graemlins/grin.gif

 

[hobbyfarm]

<font color="red">More, Neat,</font> <font color="blue">Odd Engines</font>.

These people have too much time on their hands. /forums/images/graemlins/grin.gif

 

[hobbyfarm]

<font color="orange">Deltec Model engine</font> - note the size of the notebook next to the model.

/forums/images/graemlins/smile.gif

 

[hobbyfarm]

<font color="purple">These guys</font> have some neat links to more Napier info, if anyone is interested.

 

[shvl73]

The scale stuff always intrigues me, check out these guys ; http://www.conleyprecision.com/
not as complicated as the scale napier deltec but cool still. I really like the short clip of the Cobra.

 

[BubbaJr]

Here's a link to a good friend of mine's web page . He brought a 4 cylinder 4 cycle engine with him the last time he came here to visit. It ran on alcohol, and the only byproduct was water. It was a very smooth running and quiet engine. Jerry is the most amazing machinist I have ever seen. He takes perfection to the next level in all of his hobbies.