[2stroke] Ryger engine

people have every reason to be sceptical, but history tells us (thank you Captain Hindsight  ) that some sceptical people came out awfully stupid afterwards

Think about V1 rockets....

fd-racing a écrit:

the point , here , for me  , it's not  how may hp or revs , the point  is  this new kind of engine exist , it work's ,  it gives out far more than a standart 2 strokes and i like this idea , having or not an dyno print.

I am with you on this one, and I really like this idea, too. It is just that I need proof regarding the bold part before I can check that box in my head.

A V1 was NO rocket dude but an explosives loaded pulse jet flying machine. As a child I saw a few and still remember the awful terrible noise whe flying over The Hague in 1944.

fd-racing a écrit:

The more you ask the less you get , that's an universal law

the point , here , for me  , it's not  how may hp or revs , the point  is  this new kind of engine exist , it work's ,  it gives out far more than a standart 2 strokes and i like this idea , having or not an dyno print.

it's like art , some like it no matter what  

so , think positive  


.

That's the right attitude !!
Be patient everything will be clear in a short time.

Good news, LucF woks in the Ryger team.
Dan

I haven't been keeping up.....so.....

Have ANY of you guys figured out how this thing REALLY WORKS ?


In simple terms, it does suck harder because of the following situation, which is compressing the mixture in a greater ratio than the usual 2-stroker ( due to its trick, intake-connected reed plate ), and finally the fine-tuned ignition event of whatever they have working lets it go & go like never before.

I have no doubt that this unit makes some kind of impressive power....BUT....

Let's see the little 125 cc mini-pump powering a fat-tired MX race bike driven by a typical " not-give-damn " 15 year old * hero * who bangs the livin' crap out of the gears.

THEN, and only then, with a rough-ass rider @ WFO, hauling-ass over rough-ass track conditions, with the transmission gears being crunched down 1-2-3 times and locking-up the rear and then driving the motor back into XXXXX+ RPM, will we be able to see IF a puny con-rod & related will stay-together and not orchestrate a prison-break like El Chapo into the great outdoors !

ambike a écrit:

a puny con-rod

you've seen it ?

JanBros a écrit:

ambike a écrit:

a puny con-rod

you've seen it ?

No Sir, I have only seen what has been shown here & on the web.

But, how to make any two-stroke pump more effectively is the initial phase of producing more power.

And cavitating what is sucked in, and next, being able to pump that volume PLUS under greater pressure into the cylinder is its own form of............ " super-charging ".

I * think * they have it figured out !

But I stand by my remarks re " doing it in the dirt " on a MX bike with full-sized wheel / knobby tire and a crazy-kid pilot.

Different driving dynamics for the MX scenario vs. a stinking go-kart.

We shall see !

After the thing comes out, let's hear about ALL of the past failures.

You can bet many parts " popped ".

The rod connecting the piston would appear to reciprocate vertically, but the forces of tension vs compression remain.


If advances in electrical storage continue, how long before two electric-powered race bikes crash into each other and the frames become welded together ?

i see ambike has returned from his vacation. those moderators sure must be some kind hearted folks

brokedown a écrit:

i see ambike has returned from his vacation. those moderators sure must be some kind hearted folks

Indeed HE is, b-d.

Don't worry, it was a simple misunderstanding and resolved promptly.

I've been around, but as the Ryger became the topic du jour, there's not much to be said.

Simply have to wait.

No problem, and I hope it does well.

You remember Yogi Berra ( RIP ) ?

To paraphrase : A guy can learn a lot by watching.

Ambike, I like your style 😊. And as you quote YB, here is an other one I like, which seems relevant to me in the context : In theory, there's no difference between theory and practice. In practice, there is.

I also wonder how the conrod can withststand such "heavy" parts (piston, pin and 1/3 of the conrod) running at 30000rpm... No idea about the 70hp, 'cause I know almost nothing on 2 strokes, but simple calculation of acceleration multiplied by the moving masse make irrelevant the promise of 30000rpm with a conventionnal design. Did they get some extra special material (true carbon conrod?), or found extra room to make it wider? I also want to see it, I've a lot of questions.

Hello
For when a presentation of the operation of this engine?

Now IT'S OFFICIAL ! more information will follow soon.
I can't put the image directly, sorry only the link!

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Sorry, wrong post

Frits Overmars a écrit:

Here are some Ryger crumbs to wet your appetite:
.....

Even simpler than I was expecting!

I thought the plate would be more complicated, and that there would be a ring at the lower end of small piston.

The studs at front of engine are longer than in the homologated engine?

Edit: Sorry crumbs got eaten by mouse

It's a big surprise for me

What kind of surface treatment is applied on the plate's sliding surface in contact with the piston? As there must be a lot of frictions here with the short connecting rod...

Thanks a lot Frits for these nice pictures, a very strong piston, a big tail and a thick exhaust wall. This allows a small pumping chamber, difficult to understand whith the big power of this engine.
There is probably a special seal located in the "tail piston cylinder", and i suspect exhaust boosters on each side of the exhaust port ( picture very light and soft).
The scavenging seams working in 2 stages: one near exhaust port level and the second at the cylinder base. Nice and simple, very few parts.

Merci beaucoup Frits pour ces bonnes images, un piston très robuste, une queue de gros diamètre et un épais obturateur d'échappement. Ce qui laisse une petite chambre d'aspiration, difficile à comprendre avec la forte puissance délivrée par ce moteur.
Il y a probablement un joint spécial dans le cylindre auxiliaire de la queue de piston, et je suspecte la présence de boosters de part et d'autre de la lumière d'échappement ( image très pâle ).
Le balayage semble fonctionner en 2 étapes : une au niveau de l'échappement et l'autre à la base du cylindre. Super et simple, très peu de pièces en fonction.
Dan

....

Frits Overmars a écrit:

In my previous post some pictures got posted that were not yet meant to be published.
Please do not spread them any further. Thank you.

OK, no problem.
Dan

Thank you all very much for cooperating so quickly.

Frits Overmars a écrit:

Thank you all very much for cooperating so quickly.

That's respect for Frits :)

Bollocks! I was so ready for discussing the new design :)

Fortunately, I did manage to see the pictures before they where removed. Seemed like the crankcase volume or rather cylinder transfer area volume was reduced a alot compared to existing two-stroke designs. I would think you get a much higher compression ratio, but less volume to "work with" for the expansion chamber at resonance. Maybe the rpm is the most important factor to get high hp results in this design.

However, I look forward to follow the discussion of the new design when pictures are available again :)