Outrageous 500 two-stroke!

[idleidolidyll]

110BHP 155kg and what a crazy motor!

no doubt that 110HP can be tweaked to get wayyyy more too.

http://www.motorcyclists-online.com/motorcycle-tests-reviews/newsmo.php?art=819&utm_source=Newsletter&utm_medium=email&utm_campaign=idle&&xuu=idle&xpu=c2FUWmV2cW90

[kiwifruit]

thats a work of art :yes:

[sugilite]

Put some chambers on it and get it into production fast! :woohoo:

[speedpro]

Interesting, but those are big cylinders if they are each only 125cc. They look big enough to be 500cc each. I don't think chambers are going to be a great improvement if that is the sort of 2-stroke I think it is.

[RantyDave]

That is some crazy shit. Not sure I'd want to wheel it into TSS for a service - they'd be, like, uhhhh?

Nice find.

Dave

[Ocean1]

Nice. Looks very “designed” as in “stylised”.

That usually means little or no engineering finesse but there’s nothing wrong with the engineering in this case, very innovative and structurally well thought out.

Not keen on the fairing/consul thing though.

[YellowDog]

The Poles aren't renowed for their engineering build quality, like the Czechs are.

Looks like a lot of fun though.

[Edbear]

thats a work of art :yes:


Sure is! Who'da thought... a radial bike engine, (though most radials are odd numbered cylinders), looks scary!

[Mikkel]

Hehe - they "builded the bike". :lol:

Guttered that it only puts out 110 hps from 500 ccm... :rofl:

Looks impressive. I'm just wondering how it would handle :yes:

I don't know that much about 2-stroke engines but where's the extractor chambers on the exhausts? They kinda look too pretty for a 2-stroke...

24 l fuel tank - I guess it'll need that!

[Mr Merde]

So have you put your order in then Mike?

You started on strokers so at your fine old age you should be looking at finishing on them.

Sort of like closing the circle

[Ocean1]

Sure is! Who'da thought... a radial bike engine, (though most radials are odd numbered cylinders), looks scary!

Id'a thunk it.

In fact I did, everyone's always stealing my ideas. :baby:

Always thought a 180° “V” (transverse shaft boxer twin) made a lot of sense, very low cog and centralised mass.

Likewise, a 120° (incl) frameless radial triple, swingarm off the rear cyl, steering head off the front…

[henry]

And "The frame is made from steel tubes". Woohoo.

[Edbear]

Id'a thunk it.

In fact I did, everyone's always stealing my ideas. :baby:

Always thought a 180° “V” (transverse shaft boxer twin) made a lot of sense, very low cog and centralised mass.

Likewise, a 120° (incl) frameless radial triple, swingarm off the rear cyl, steering head off the front…

Yeah, but we need the $$$ to invest! You'll just have to find a sponser next time...

The transverse shaft idea would cause a few issues about engine placement in the frame, though, wouldn't it?

[gijoe1313]

Go the two strokes! :love: Nice find there! :yes:

[Ocean1]

The transverse shaft idea would cause a few issues about engine placement in the frame, though, wouldn't it?

Yeah, above a certain capacity the overall length would be an issue.

One way of developing structural designs is a force vector diagram, if you quantify all the loads and the angles at which they apply to the system you can come very close to defining the structure itself. The major loads on a bike are at the swingarm pivot and the steering head, for a road bike there’s comparatively minor loads involving the rider at the seat and pegs.

If you consider the relative positions of the two major loads you can see how arranging cylinders at about 120° allows you to use the heads as structural entities with the minor loads requiring only lightweight sub-frames. A 120° V twin ain’t optimum from an engine design standpoint but a triple radial might be, given that most current twin developments are at 60° odd. Some reservations about rod arrangement and breathing…

[Edbear]

Was it Douglas that did a transverse shaft flat twin? About 500cc?

[Ocean1]

*Looks*

Yup.

Think there was a Murkin one too but I can't remember the name.

[BIGBOSSMAN]

More information can be found here http://thekneeslider.com/archives/2008/03/20/jj2s-x4-500-4-cylinder-2-stroke-concept-motorcycle/

[Pwalo]

I'd like to see it running. I guess it's like a stationary rotary engine?

It looks suspiciously like a concept bike rather than something that you could actually ride. I mean just imagine the fun of fuel injection on an X layout. And how do you arrange the firing. Screamer, big bang? I guess I can't see what it's trying to achieve.

[Edbear]

.. Screamer, big bang? ...


Yup! In that order...

[Pwalo]

Yup! In that order...

And hospital shortly thereafter no doubt!

[musicman]

This is actually a 3D render. All of these images. As far as I can tell there is no physical prototype - at least not in this bunch of images. I am a 3D artist by trade, and there are many signs that this is a render. Maybe the concept is cool, but I doubt there is a real prototype.

Enough said.

(Had me fooled :o thought it was a real bike...)

[Forest]

I'd like to see it running. I guess it's like a stationary rotary engine?

It looks suspiciously like a concept bike rather than something that you could actually ride. I mean just imagine the fun of fuel injection on an X layout. And how do you arrange the firing. Screamer, big bang? I guess I can't see what it's trying to achieve.

The images in the article are computer rendered i.e. not photographs.

I suspect that it might be a while before we see one of them actually running.

[idleidolidyll]

So have you put your order in then Mike?

You started on strokers so at your fine old age you should be looking at finishing on them.

Sort of like closing the circle

it'll probably never get into production as a blue smoke but why not use the same X design for a 4 stroke?

skinny like a britten but twice as many cylinders, probably two pair of horizontally opposed pistons so it'd have massive torque too.

i've toyed with the idea of making a 1000cc vee twin blue smoke for a few years but first I might just see if i can buy back the alloy/titanium ducati powered bike Mike Broz and I built.

[Mr Merde]

it'll probably never get into production as a blue smoke but why not use the same X design for a 4 stroke?

skinny like a britten but twice as many cylinders, probably two pair of horizontally opposed pistons so it'd have massive torque too.

i've toyed with the idea of making a 1000cc vee twin blue smoke for a few years but first I might just see if i can buy back the alloy/titanium ducati powered bike Mike Broz and I built.

Would be nice to see ythat bike. Heard about it for a while now.

Good luck

[Morcs]

Ah so another death machine just like the RG, and the H1 and H2.

Awesome bikes though...

[stanko]

Have a look at page 46 of this PDF http://www.konstrukcjeinzynierskie.pl/PiKI_2(2)2007_website_LQ.pdf
then you may understand why it is a dead dog. Effectivly it has stationery pistons and moving cylinders, whith truckloads of reciprocating mass and many potential stress risers (places that cause cracks) the cylinders have to be massive as they contain the charge pumping , which is normally carried out by the crankcase. This engine would likley be difficult to coolast the heat has to be conducted through a sleeve before getting into the "cylinder"
I guess with Cad you can design the craziest things with no regard to their workings

[Kickaha]

Guttered that it only puts out 110 hps from 500 ccm... :rofl:


Hardly worth having, but I guess they wouldn't go for ultimate HP if they wanted longevity

Look up Krauser,Swissauto, or ADM they were 500cc two strokes used in sidecars untill the nineties pumping out 200+ HP