Oddball engines and prototypes

[ken seeber]

Will,

Have a look at some of these. And I thought I had a troubled mind!

http://www.pattakon.com/

[WilDun]

Thanks Ken,
I may have a troubled mind too! However, even though a lot of these probably won't actually work, they still make food for thought and I guess sitting thinking about it all will see me out! - story of my life,(and many others), ie too much thought and not enough action....... unlike Flettner!

I did get some of my thoughts down on paper though and was hoping to get my furnace and workshop in operation to try out a few of my better ones and have at least something tangible done before I "kick the bucket"!

Always been keen on infinitely variable valve timing and came up with a workable idea around i987 - it was almost fully mechanical, but...... I really should have tried harder at the time!

I believe that many of these ideas (some of which with development would possibly be quite feasible) are often thought up by people who spend more time with their expensive CAD programs, making (great) animations which then becomes the main challenge in life, maybe preventing them from actually getting the original idea working!

However, they are still extremely interesting and ingenious!

BTW - a lot of viruses around!!

[Madmax]

http://www.douglas-self.com/MUSEUM/P...ers%20anim.gif

more detailed

http://www.douglas-self.com/MUSEUM/P...g/Trebert2.gif

have fun

[Cheesy]

Here's a 2 stroke pivot piston we have here at work. It's one of the engineers at work from when he worked at Brown Brothers. Apparently the engine worked well and made decent power.

Thats a pretty old one, this is one of the later versions


At some stage they even machined up a couple of titanium pistons to try and get it to work

[Cheesy]

And another one

[Mental Trousers]

I'm still mystified as to why they made them square. It makes the cylinders much easier to machine but it must be a bitch when it comes to getting a complete burn.

[husaberg]

[unstuck]

Wave crank engine

Cannot see it taking off myself.

[husaberg]

Cannot see it taking off myself.

Yeah the PVC and wood looks a bit half baked.......

[husaberg]

I'd say if that one takes off, then we are definitely living cuckooland!

There is another one in the same You Tube group, which resembles the Dynacam aero engine which looks to be a better bet.
However even though the Dynacam has now been certified as an aero engine, it still hasn't hasn't struck the paydirt after a helluva lot of years in development and I can't see this one doing any better.

I don't see any advantage to the dynacam the power output is not that stella (maybe only thing is packaging) a decent two stroke is lighter and smaller.

[unstuck]

Yeah the PVC and wood looks a bit half baked.......

Nah, no wings...........

[WilDun]

Guess that one will have to wait till he discovers Aluminium and Steel.

I think the good old conventional two stroke is still streets ahead of everything, with power to weight ratio and simplicity - still a problem with fuel consumption in aircraft engine form - at least till all this injection stuff is properly sorted anyway.

[WilDun]

Then, there's this Aussie one which I found quite a while ago, (way before this thread started), sort of surprised it hasn't been mentioned here before! and it seems to be working ok so far.

http://citsengine.com.au/?page_id=50

[unstuck]

So, do they have their own engine moldings in mind, or are they just planning on robbing Suzuki and rotax's for production models .

[WilDun]

are they just planning on robbing Suzuki and rotax's for production models .

I think that it's going to save a lot of bucks if he incorporates other peoples technology in his prototypes to prove a point first, but it's a brave man who sets out to improve on what's out there already by trying to put a new one on the market.
If he does try to do that, they'll eat him alive and if he produces a few successful prototypes I bet someone big will just use his ideas, (similar but a little different) - good on him for trying though.