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[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeAujourd'hui à 10:06 par fullgazlolo

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[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeHier à 12:44 par offen 88

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[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeHier à 10:58 par MJL

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[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeHier à 9:33 par Dialmax

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[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeHier à 8:50 par JH42

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[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeHier à 7:53 par Ala Zorro

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[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeMer 8 Avr 2020 - 19:00 par Atch

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[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeMer 8 Avr 2020 - 16:41 par philwood

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[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeMer 8 Avr 2020 - 10:46 par Le Xav

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[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeMer 8 Avr 2020 - 10:33 par berlu

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[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeMer 8 Avr 2020 - 10:18 par carlovitch1

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[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeLun 6 Avr 2020 - 12:34 par bialbero

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[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeLun 6 Avr 2020 - 6:59 par EDOUARD Jean

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[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeDim 5 Avr 2020 - 23:04 par Ch.VOIGNIER

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[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeDim 5 Avr 2020 - 21:26 par mickey

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[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeDim 5 Avr 2020 - 20:48 par Loveside

La réclame...
Mots-clés
rouge daytona 2013 zone charade bourg 1980 1976 yamaha geco suzuki RACING ducati aprilia eurosport classic race triumph bresse aermacchi wanted ROAD 1973 side france honda
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Marc
[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Voting16[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Voting13[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Voting15 
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EDOUARD Jean
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 [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4)

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AuteurMessage
Jan Thiel



Nombre de messages : 501
Age : 79
Localisation : Bangkok
Date d'inscription : 12/10/2010

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Empty
MessageSujet: Re: [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4)   [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeVen 31 Juil 2015 - 8:17

At Aprilia we always used dental hand pieces.
D&H if I remember well.
We made about 400 cylinders a year, working in a team of 3.
We broke maybe 2 or 3 a year, which was not so bad in my opinion
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ktuningteam



Nombre de messages : 38
Localisation : valencia
Date d'inscription : 03/03/2015

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Empty
MessageSujet: Re: [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4)   [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeVen 31 Juil 2015 - 9:05

I use disposable, with 2 or 3 per cylinder is sufficient, works out cheaper than a new high-quality and then it can spoil

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JanBros



Nombre de messages : 272
Localisation : Belgique
Date d'inscription : 05/12/2011

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Empty
MessageSujet: Re: [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4)   [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeVen 31 Juil 2015 - 14:21

what burs/stones/whatever do you use ?
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ridgeback



Nombre de messages : 1
Localisation : italy
Date d'inscription : 05/02/2015

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Empty
MessageSujet: Re: [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4)   [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeMar 4 Aoû 2015 - 9:45

to Frits: what about Ryger Engine?
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Frits Overmars

Frits Overmars

Nombre de messages : 2303
Age : 71
Localisation : Raalte, Holland
Date d'inscription : 12/10/2010

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Empty
MessageSujet: Re: [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4)   [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeMar 4 Aoû 2015 - 10:28

ridgeback a écrit:
to Frits: what about Ryger Engine?
It is spectacular. It is a 125 cc kart engine with the 30 mm Dellorto carb and the low compression ratio that are mandatory for kart engines but nevertheless it produces 70 HP at 17500 rpm as compared to the 54 HP at 13000 rpm of the Aprilia RSA.
It uses regular Euro-95 petrol without oil added to it, its fuel consumption is more economical than conventional two-strokes and there are over 80% less emissions.

The Federal Internationale de l'Automobile has approved the Ryger homologation last saturday.
Some patents are still pending and this is the reason I cannot tell more about the engine yet. As soon as the patents are granted I will give more details.
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Dernière édition par Frits Overmars le Mar 4 Aoû 2015 - 13:23, édité 1 fois
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ktuningteam



Nombre de messages : 38
Localisation : valencia
Date d'inscription : 03/03/2015

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Empty
MessageSujet: Re: [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4)   [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeMar 4 Aoû 2015 - 11:43

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70cv with 125cc 30mm carburetor in there ?? ... there can only be magic ...
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vin97



Nombre de messages : 8
Localisation : Trier
Date d'inscription : 18/05/2014

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Empty
MessageSujet: Re: [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4)   [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeMar 4 Aoû 2015 - 17:03

Wow, that sounds incredible.

Can't wait for more information on that engine.
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LucF



Nombre de messages : 110
Age : 76
Localisation : Pays Bas
Date d'inscription : 25/05/2011

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Empty
MessageSujet: Re: [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4)   [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeMar 4 Aoû 2015 - 17:37

vin97 a écrit:
Wow, that sounds incredible.

Can't wait for more information on that engine.

You are not the only one, many licence requests too !!
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http://www.geocities.ws/lucfoekema/indexNL.html
ambike



Nombre de messages : 57
Localisation : DFW,Texas
Date d'inscription : 15/11/2013

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Empty
MessageSujet: Re: [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4)   [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeMar 4 Aoû 2015 - 20:15

Has eleven ducks, huh ?

Well OK !
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nine-thirtysix



Nombre de messages : 6
Localisation : Germany
Date d'inscription : 18/07/2012

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Empty
MessageSujet: Re: [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4)   [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeJeu 6 Aoû 2015 - 14:30

Jan or Frits how much port offset (undersize) was needed to get the casted duct grinded on spec?
How was the template build and applied?

And Frits was there any offset for your FOS cylinder and the SLM process needed?

Thank you guys very much!
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Jan Thiel



Nombre de messages : 501
Age : 79
Localisation : Bangkok
Date d'inscription : 12/10/2010

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Empty
MessageSujet: Re: [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4)   [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeJeu 6 Aoû 2015 - 14:44

about 0,2mm
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Frits Overmars

Frits Overmars

Nombre de messages : 2303
Age : 71
Localisation : Raalte, Holland
Date d'inscription : 12/10/2010

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Empty
MessageSujet: Re: [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4)   [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeJeu 6 Aoû 2015 - 16:39

nine-thirtysix a écrit:
Frits was there any offset for your FOS cylinder and the SLM process needed?
Less than 0,1 mm.
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Frits Overmars

Frits Overmars

Nombre de messages : 2303
Age : 71
Localisation : Raalte, Holland
Date d'inscription : 12/10/2010

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Empty
MessageSujet: Re: [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4)   [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeJeu 6 Aoû 2015 - 22:26

Ryger production is running in high gear in order to meet the CIK regulations.
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Dan42



Nombre de messages : 5907
Localisation : Margerie-Chantagret 42
Date d'inscription : 06/04/2014

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Empty
MessageSujet: Re: [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4)   [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeSam 8 Aoû 2015 - 9:52

Il est très intéressant ce moteur RYGER 125cc de 70HP: le plus puissant 2T jamais construit? avec une simple admission à clapets. Si l'Aprillia de 54 Hp à 13000 rpm pouvait monter à 17500 rpm ( comme le Ryger) en conservant son efficacité de respiration, il développerait 73 hp, soit une puissance voisine, mais est-ce possible? Il semble que cette bride brillante à la base du cylindre soit une partie du "secret" du rendement. Les très faibles émissions sont aussi un des aspects remarquables de ce moteur. Nous attendons avec impatience de plus précises informations ( lorsque possible) de la part de Frits qui a peut être travaillé sur ce moteur [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 809262 [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 980796
Dan
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Frits Overmars

Frits Overmars

Nombre de messages : 2303
Age : 71
Localisation : Raalte, Holland
Date d'inscription : 12/10/2010

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Empty
MessageSujet: Re: [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4)   [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Icon_minitimeSam 8 Aoû 2015 - 10:16

Dan42 a écrit:
Il est très intéressant ce moteur RYGER 125cc de 70HP: le plus puissant 2T jamais construit?
To the best of my knowledge: yes.
Citation :
Si l'Aprillia de 54 Hp à 13000 rpm pouvait monter à 17500 rpm ( comme le Ryger) en conservant son efficacité de respiration, il développerait 73 hp, soit une puissance voisine.
Yes Dan, if we look at the Mean Effective Pressure, Jan Thiels achievement is still unsurpassed. The virtue of the Ryger engine is that it can maintain this high MEP value at much higher revs, and with a lower specific fuel consumption.
Citation :
Il semble que cette bride brillante à la base du cylindre soit une partie du "secret" du rendement.
That is right Dan.
Citation :
Les très faibles émissions sont aussi un des aspects remarquables de ce moteur.
The Ryger's power and its capability for ultrahigh revs are impressive but if we look at the big picture, the 80% emissions reduction is the most important aspect. It may initiate the return of the two-stroke as the prime type of combustion engine.
Citation :
... Frits qui a peut être travaillé sur ce moteur.
The Ryger engine was entirely designed and developed by Harry Ryger. I am very happy to be part of the Ryger team now and I am eager to contribute to its further development. Who knows where this will end...
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ridley

ridley

Nombre de messages : 1299
Age : 65
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Date d'inscription : 19/02/2009

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La course “motrice“ paraît très importante? Il semble que tout se passe au niveau du bas moteur? scratch
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Frits Overmars

Frits Overmars

Nombre de messages : 2303
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Date d'inscription : 12/10/2010

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Dan42



Nombre de messages : 5907
Localisation : Margerie-Chantagret 42
Date d'inscription : 06/04/2014

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Merci Frits pour tes commentaires.
Dan
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Marc
Admin
Marc

Nombre de messages : 27871
Age : 61
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Date d'inscription : 27/05/2008

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Don't worry, Frits; even in french, it doesn't mean anything.... Very Happy

_________________
Un p'tit clik vaut mieux qu'une grande claque; c'est Harry qui l'a dit! [Vous devez être inscrit et connecté pour voir cette image]

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Frits Overmars

Frits Overmars

Nombre de messages : 2303
Age : 71
Localisation : Raalte, Holland
Date d'inscription : 12/10/2010

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Jan Thiel a écrit:
At Aprilia we always used dental hand pieces....We made about 400 cylinders a year...We broke maybe 2 or 3 a year, which was not so bad in my opinion
Not bad at all. But then there are dental handpieces and dental handpieces.
Some you'll find at a dental surgeon's ; some you are more likely to find in a Zoo.
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Dernière édition par Frits Overmars le Sam 8 Aoû 2015 - 13:02, édité 1 fois
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ridley

ridley

Nombre de messages : 1299
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Date d'inscription : 19/02/2009

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Course motrice: Moment durant lequel l'équipage mobile reçoit, via la pression liée à la combustion exercée sur la calotte du piston, l'effort maximal (avant l'ouverture de la lumière d'échappement dans le cas d'un moteur 2 temps).

Power stroke: Time during which the moving element receives, via the pressure of the combustion exerted on the piston crown, the maximum force (before the opening of the exhaust port in the case of a 2-stroke engine ).
Marc: [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 629615

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 167764023
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Frits Overmars

Frits Overmars

Nombre de messages : 2303
Age : 71
Localisation : Raalte, Holland
Date d'inscription : 12/10/2010

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ridley a écrit:
La course “motrice“ paraît très importante? Il semble que tout se passe au niveau du bas moteur?

Course motrice: Moment durant lequel l'équipage mobile reçoit, via la pression liée à la combustion exercée sur la calotte du piston, l'effort maximal (avant l'ouverture de la lumière d'échappement dans le cas d'un moteur 2 temps).
Power stroke: Time during which the moving element receives, via the pressure of the combustion exerted on the piston crown, the maximum force (before the opening of the exhaust port in the case of a 2-stroke engine ).
I got it now, Ridley. Let's go easy on Marc though.
Google Translator:  [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 629615

Yes, the power stroke is important, but that does not make the Ryger different from any other engine.
And like in any other engine, some things happen in the engine cases, but most of it happens higher up.
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ridley

ridley

Nombre de messages : 1299
Age : 65
Localisation : Dans les collines du Perche
Date d'inscription : 19/02/2009

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 Empty
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About Marc it's only humor. [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 809262

[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 4) - Page 38 167764023
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ridley

ridley

Nombre de messages : 1299
Age : 65
Localisation : Dans les collines du Perche
Date d'inscription : 19/02/2009

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What is the utility of the tank topped of a filter that we can see near the carburetor?

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bentou

bentou

Nombre de messages : 1950
Age : 60
Localisation : Hauts de Seine
Date d'inscription : 06/04/2012

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Is there something like a double diameter piston for precompression, a bit like the old Norton engine ???
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