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 [2stroke] Ryger engine

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AuteurMessage
LucF



Nombre de messages : 105
Age : 75
Localisation : Pays Bas
Date d'inscription : 25/05/2011

[2stroke] Ryger engine - Page 24 Empty
MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeMer 13 Sep 2017 - 17:59

JanBros a écrit:

What did you expected when you posted your self-drawn power-graph's or a blury picture of some digital display indicating 28xxx ?

I know how it is measured.
It is your right not to believe this, but that is no reason to think that your suggestion is right.
So very stupid to think so !
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JanBros



Nombre de messages : 237
Localisation : Belgique
Date d'inscription : 05/12/2011

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeMer 13 Sep 2017 - 23:12

LucF a écrit:
JanBros a écrit:

What did you expected when you posted your self-drawn power-graph's or a blury picture of some digital display indicating 28xxx ?

I know how it is measured.
It is your right not to believe this, but that is no reason to think that your suggestion is right.
So very stupid to think so !

let me put it like this :
you tried to prove in a biblical way that the world would have ended to excist by 01/01/2016. as that day had passed, you came up with another "biblical" evidence that the world would end by 01/01/2017. But the world still excists. now the new date is probably 01/01/2018. I bet that date will also pass. Simply because one believes in the bible or not, there is not a single fact in the bible that can be considered as evidence of anything that truly has happened.

the PR-mess is basicly you Luc.
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fullgazlolo



Nombre de messages : 941
Localisation : GE-CH
Date d'inscription : 04/01/2016

[2stroke] Ryger engine - Page 24 Empty
MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeJeu 14 Sep 2017 - 0:10

LucF a écrit:
We are only training on sunday 3th of September at Pottendijk with some karts, one experienced and also some young drivers to learn.
So, you trained 10 days ago.
Is that correct?
If yes, what are the results? Did you compare with similar KZ's? Did you broke any engine?
I find your development methods a bit light and amateur and I prefer not comment your communication because we all say the same about it since a long time!

you should be inspired by "Pépé" and its homokinetic!
It has not proved anything else until now that it does not really work better than what does not work but at least it seems to be credible to the Beotians!
There you spoke so much without ever doing anything credible, except being thrown by the French importer, that no one will believe you until you have demonstrated what you theorize!
It is more than time to reveal your proofs and that they are irrefutable because for the moment and as Jan says, it is no more than words from bible , Torah, Koran, gospel, etc., etc.
That means that your proofs are irrefutable only for those who believe in your theory. I believe in facts!
So long guys.
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fullgazlolo



Nombre de messages : 941
Localisation : GE-CH
Date d'inscription : 04/01/2016

[2stroke] Ryger engine - Page 24 Empty
MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeLun 18 Sep 2017 - 9:17

Wind is still blowing but no news being flying with... so stange!!!

Luc, are you still alive? are you writing the results?
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LucF



Nombre de messages : 105
Age : 75
Localisation : Pays Bas
Date d'inscription : 25/05/2011

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeJeu 29 Mar 2018 - 12:37

Onboard video of Ryger in action

[Vous devez être inscrit et connecté pour voir ce lien]
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Bob van der Zijden



Nombre de messages : 94
Localisation : Hollande
Date d'inscription : 10/09/2013

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeJeu 29 Mar 2018 - 15:50

What's the point ?
This does not show anything but a kart on a circuit, no data, f.....g nothing. Empty shell from a wanker.
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Adco

Adco

Nombre de messages : 722
Localisation : Limoges
Date d'inscription : 19/02/2016

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeJeu 29 Mar 2018 - 21:28

A quoi ça sert? ....A rien ,c'était pour faire avancer le schmilblick.
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fd-racing

fd-racing

Nombre de messages : 745
Age : 55
Localisation : france/fréjus
Date d'inscription : 03/02/2014

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeJeu 29 Mar 2018 - 21:33

Hey Boby , you may be right ( who know's ) , after all nobody really cares about the Ryger engine anymore , but , if they like to make it running , in a way or an other , LET THEM DO .

ps: I like the sound it make's , sound of torque !!!!

.
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Bob van der Zijden



Nombre de messages : 94
Localisation : Hollande
Date d'inscription : 10/09/2013

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeVen 30 Mar 2018 - 10:33

You are right, we have to wait and see. Sorry for the fuss.
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carlovitch1



Nombre de messages : 207
Localisation : Pays Catalan
Date d'inscription : 20/05/2018

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeMer 20 Juin 2018 - 22:43

Good evening everyone, I read the 24 pages of this topic, I'm disappointed because I still could not figure out how it really works (or is supposed to), and what is supposed to make it better.
I can understand developing a new concept may not go the easy way, I faced it several time in my professional life.
It's a pity that we could not get more info, maybe some of us could have helped?
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fd-racing

fd-racing

Nombre de messages : 745
Age : 55
Localisation : france/fréjus
Date d'inscription : 03/02/2014

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeMer 20 Juin 2018 - 22:54

You'r absolutely right man  , it's a deep waste  [2stroke] Ryger engine - Page 24 584741

as usual , ego  fucked  it up  [2stroke] Ryger engine - Page 24 55116

.
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ReinanRacing



Nombre de messages : 46
Localisation : Japon
Date d'inscription : 24/06/2018

[2stroke] Ryger engine - Page 24 Empty
MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeMer 25 Juil 2018 - 3:09

carlovitch1 a écrit:
Good evening everyone, I read the 24 pages of this topic, I'm disappointed because I still could not figure out how it really works (or is supposed to), and what is supposed to make it better.
I can understand developing a new concept may not go the easy way, I faced it several time in my professional life.
It's a pity that we could not get more info, maybe some of us could have helped?

Check out this video:



The gentleman has a strong accent but his explanation on the white board is pretty good. In effect, the Ryger engine appears to be similar in layout to the "Hooper Stepped Piston Engine":

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The basic idea is to have two pistons connected into one piston, so that the top part is experiencing the combustion ("power piston"), and the bottom part is used as "charge pump" or "charge piston". The Hooper engine has a narrow power piston and a wide charge piston; the Ryger engine has a wide power piston and a narrow charge piston. As indicated in the YouTube clip, it is a bit uncertain what the designers want to achieve: yes, the crank case is sealed so you do not need to burn oil, but the problem of "short circuit" remains, you have a more massive piston with more rings (more friction), and most importantly, it is still unclear how to lubricate the small end and the piston rings on the top.

The Ryger website claims that they were planning to produce 200 engines per month starting November 2016:

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Ryger is a Dutch BV (limited liability company) thus their financial report is public. Anybody in the Netherlands can go to the KvK (chamber of commerce) and request a copy of the latest financial statements of Ryger BV. Then you can find out how many engines are really being produced.
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carlovitch1



Nombre de messages : 207
Localisation : Pays Catalan
Date d'inscription : 20/05/2018

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeMer 25 Juil 2018 - 8:21

I already tried to watch the video, but did not understand much of what the guy said (yes he has a very strong accent).
Thanks for the Hooper link, I understand now better the principle. It makes me think a bit of what Motobécane did with their 99Z with "counter piston" (one "normal" piston and another one to compress the fresh charge, both connected to the same crankshaft).
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ReinanRacing



Nombre de messages : 46
Localisation : Japon
Date d'inscription : 24/06/2018

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeMer 25 Juil 2018 - 13:58

The design of Hooper Engineering and the design of the Ryger engine are variations on a very old idea. In the 1930s DKW was already racing 2T engines with "double pistons" (Doppelkolben) and a "charge pump" (Ladepumpe):

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Both the DKW SS 250 and SS 350 were considered unbeatable in their time. The charge pump was a large diameter piston of small stroke. It's purpose was to pump air to the crank case, and then to the cylinders.
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LucF



Nombre de messages : 105
Age : 75
Localisation : Pays Bas
Date d'inscription : 25/05/2011

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeMer 25 Juil 2018 - 15:40

Sorry only in Dutch :
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carlovitch1



Nombre de messages : 207
Localisation : Pays Catalan
Date d'inscription : 20/05/2018

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeMer 25 Juil 2018 - 16:30

Thanks, Luc, with the drawings no need to understand Dutch, this is plus or minus what I was thinking about.
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LucF



Nombre de messages : 105
Age : 75
Localisation : Pays Bas
Date d'inscription : 25/05/2011

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeMer 25 Juil 2018 - 16:42

No Carlovitch, it is one piston in one piece of aluminium, but with 2 diameters.

But the homologation papers are already public from Jan 20, 2016
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carlovitch1



Nombre de messages : 207
Localisation : Pays Catalan
Date d'inscription : 20/05/2018

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeMer 25 Juil 2018 - 18:21

Yes, understood, the same principle but on the same part instead of 2 separate.
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LucF



Nombre de messages : 105
Age : 75
Localisation : Pays Bas
Date d'inscription : 25/05/2011

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeMer 25 Juil 2018 - 18:40

With a standard two-stroke under pressure with one piston is also part of the process, just like Ryger with one piston.

With 2 pistons like DKW is prohibited by the FIM since 1949, which is seen as an engine with compressor.
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ReinanRacing



Nombre de messages : 46
Localisation : Japon
Date d'inscription : 24/06/2018

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeJeu 26 Juil 2018 - 13:51

For mass market production, the 2T engine faces basically two problems: emissions and durability. Both problems are linked to the fact that the crank case is an integral part of the operating cycle of the engine. To make a 2T with a closed crank case there are basically two solutions: provide air with some external device (like a Roots blower) or somehow integrate a "charge pump" into the design.

The problem with the Ryger design (and similar designs with a separate charge pump, such as the Hooper Engineering "stepped piston concept") is that there are still parts (piston rings, etc) for which the lubrication is problematic, as also explained in the video of The Workshop. The Workshop draws the conclusion that the Ryger engine is intended for limited use, i.e., the cylinder and rings are not well lubricated (the rings of the power piston are apparently not lubricated at all), so that the piston, rings, and cylinder have a short service life. That may be OK for a kart engine but is unacceptable for mass production.

A similar attempt is the JJS X4 engine, which is very similar to the stepped piston layout, but with the charging pump above the combustion chamber rather than below it:

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LucF



Nombre de messages : 105
Age : 75
Localisation : Pays Bas
Date d'inscription : 25/05/2011

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeJeu 26 Juil 2018 - 16:43

If there would be one thing in a Ryger better than in a normal 2t, then it's the lubrication.

The crankshaft rotates in the oil and can also go up through the hollow piston where there is a hole between the two piston rings.
The size of that hole determines the amount of lubrication.

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carlovitch1



Nombre de messages : 207
Localisation : Pays Catalan
Date d'inscription : 20/05/2018

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeJeu 26 Juil 2018 - 21:08

And so, at which stage is Ryger engine development now? Is it now matching the expected hp number, was it raced with success somewhere?
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LucF



Nombre de messages : 105
Age : 75
Localisation : Pays Bas
Date d'inscription : 25/05/2011

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeJeu 26 Juil 2018 - 21:21

Sorry and forgive but I'm not allowed to say anything more at this moment.
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fullgazlolo



Nombre de messages : 941
Localisation : GE-CH
Date d'inscription : 04/01/2016

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeJeu 26 Juil 2018 - 21:56

As allways...
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carlovitch1



Nombre de messages : 207
Localisation : Pays Catalan
Date d'inscription : 20/05/2018

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MessageSujet: Re: [2stroke] Ryger engine   [2stroke] Ryger engine - Page 24 Icon_minitimeJeu 26 Juil 2018 - 22:00

OK, we'll wait for news.
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