AccueilGalerieRechercherDernières imagesS'enregistrerConnexionNouveaux messages depuis dernière visite
Rechercher
 
 

Résultats par :
 
Rechercher Recherche avancée
Qui est en ligne ?
Il y a en tout 65 utilisateurs en ligne :: 9 Enregistrés, 2 Invisibles et 54 Invités :: 3 Moteurs de recherche

demeilliers, dga, frank, jeumsouvien, JYD, michel guichard, Morisse, sylvainsolex, topalof

Le record du nombre d'utilisateurs en ligne est de 539 le Mar 19 Mar 2024 - 12:10
Derniers sujets
» [Oldies] Quizz (29)
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeAujourd'hui à 10:52 par DidierF

»  [WSBK] Royaume-Uni 2024 à Donington , les 12 , 13 et 14 Juillet 2024 .
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeAujourd'hui à 10:32 par EDOUARD Jean

» [Oldies] Moto Elf
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeHier à 21:56 par Dialmax

» St Germain/Ille
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeHier à 15:39 par Alain Gwada

» GP Allemagne 1972 Nürburgring (Nordschleife)
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeHier à 13:59 par Loveside

» [Oldies] Questions (vitesse 1947-1976)
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeHier à 12:21 par DidierF

» GP Allemagne Nurburgring 1970
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeHier à 11:48 par Rennmax

» Honda racing des sixties part2
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeHier à 1:42 par Laxion

»  [MotoGP] Infos , nouveautés , potins , tests et plus pour la saison GP 2025 ...
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeJeu 11 Juil 2024 - 20:59 par Aragon

» Imatra IRRC 2024
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeJeu 11 Juil 2024 - 19:24 par Mykeul

» [Oldies] Spa-Francorchamps jusqu'à 1972...
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeJeu 11 Juil 2024 - 18:42 par jack177071

» [Endurance] Saison 2024 .
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeJeu 11 Juil 2024 - 18:04 par jean-luc morchio

» [Oldies] 50cc de vitesse : Toute leur histoire ! (partie 2)
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeJeu 11 Juil 2024 - 9:10 par jeanmichel.prudon

» Gregg Black
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeJeu 11 Juil 2024 - 8:47 par bartau

» [Oldies] Jarno Saarinen, la star qui a revolutionné le pilotage (Part 5)
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeJeu 11 Juil 2024 - 8:09 par Rennmax

» [Oldies] Restauration de mon side-car des années 70, la suite!
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMer 10 Juil 2024 - 9:05 par Dan42

» Pierre PSALTY - Royal Enfield - 80 av des Ternes - Paris
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMar 9 Juil 2024 - 15:49 par Dialmax

» [Pit Laners en course!] Clément Révolte (coupe YAMAHA R125)
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMar 9 Juil 2024 - 12:01 par petitvolt

»  [Oldies] Malheureusement, ils sont partis...
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMar 9 Juil 2024 - 10:33 par Loveside

»  [MotoGP] GP 2024 d' Allemagne au Sachsenring , les 5 . 6 et 7 Juillet 2024
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMar 9 Juil 2024 - 8:59 par Dan42

» [Oldies] GP de France, Le Mans 1970
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeLun 8 Juil 2024 - 10:30 par bubu

» [Oldies] Bourg-en-Bresse 1975
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeDim 7 Juil 2024 - 17:55 par berlu

» [MotoGP] GP 2024 des Pays Bas à Assen le 28 , 29 et 60 Juin 2024 .
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeDim 7 Juil 2024 - 13:35 par bubu

» Bonjour à toutes et tous
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeDim 7 Juil 2024 - 10:52 par Bosquet

» Projet fabrication 125 piste moteur karting modena
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMer 3 Juil 2024 - 18:39 par Valentin Castagnuozzo

» Nouvelle montée historique organisée par DIEPPE RALLYE HISTORIQUE
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMar 2 Juil 2024 - 19:46 par GaazAsso

»  [FSBK] Magny Cours 2024 . Les 28 , 29 et 30 Juin 2024 .
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeLun 1 Juil 2024 - 7:14 par EDOUARD Jean

» [Oldies] GP de France 1974 Charade
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeSam 29 Juin 2024 - 21:02 par Bricole 63

» DANIEL ROUGE Pilote/Reporter son histoire
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeVen 28 Juin 2024 - 20:22 par Joel Enndewell 2424

» [Oldies] Barry Sheene, trajectoire d'une star
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeJeu 27 Juin 2024 - 12:48 par DidierF

Mots-clés
charade motos zone side yamaha coupe bresse aprilia oldies ROAD RACING rouge 2013 classic Mans suzuki francaises 1973 artisanales bourg moto inventaire ducati wanted 1976 motobecane
Meilleurs posteurs
Marc
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting161973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting131973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting15 
EDOUARD Jean
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting161973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting131973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting15 
philwood
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting161973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting131973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting15 
Pierre"PhilRead"
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting161973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting131973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting15 
mickey
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting161973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting131973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting15 
yves kerlo
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting161973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting131973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting15 
bubu
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting161973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting131973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting15 
Fügner
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting161973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting131973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting15 
Dialmax
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting161973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting131973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting15 
Dan42
1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting161973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting131973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Voting15 
La réclame...
Le Deal du moment : -60%
-60% : 2 briques de rangement empilables LEGO à ...
Voir le deal
19.99 €

 

 [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked)

Aller en bas 
+85
genna900
nikinn33
C_Wolf
bentou
maccas
rgvbaz
mattology
Emmanuel Laurentz
uniflow
Ken Seeber
yeahhim
Al mach
bengui
ettoiffi
teriks
2005bully
mj43
husaberger
Jeram
Larry Wiechman
vespafiend
Muciek
Polo les gazs
t0nix
Gordon Jones
nine-thirtysix
Filandro
p12palof
michaelten
CRECY
diskvalve
Stephane
Manuel Rainer
pfpraider
Forgi
Tomi
Paul Olesen
senso
romeuh80
Ölsau
MINGRET01
pierre95
julien #41
ridley
SB07
Blommen
Ronath
el castor
mxer
dutch fisher
d.Bonnot
eric²
roost
dcracing1
RAW
Vagelis
morini155
Piquer
Ian Harrison
Jarno
Areomyst
XpTpSMTT
fpayart
Institute of TwoStrokes
fab evospeed
Seb4LO
Toop
Mic
wax
jfn2
Hemeyla
cristogrr
melvyn trevor
Brian Callahan
Daniel A.
Haufen
Jan Thiel
GtG001
Sabijator
Marc
rgdavid
GrahamB
koenich
Frits Overmars
Howard Gifford
89 participants
Aller à la page : Précédent  1 ... 21 ... 38, 39, 40
AuteurMessage
Emmanuel Laurentz

Emmanuel Laurentz


Nombre de messages : 5075
Age : 64
Localisation : PACA
Date d'inscription : 07/12/2009

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMar 26 Fév 2013 - 14:10

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 398384 j'y vais tout de suite .
Revenir en haut Aller en bas
Institute of TwoStrokes




Nombre de messages : 149
Localisation : Australie
Date d'inscription : 15/10/2010

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMar 26 Fév 2013 - 14:18

Emmanuel Laurentz a écrit:
Tu sais les valeurs sont indiqués tel 86/136 (pour l'exemple), donc sur le moteur ci dessus j'ai effectivement 86° depuis le PMH jusqu’à la fermeture de l'admition ok mais que représente cet angle de 136° et à partir de quand ?

J'ai lu dès la page 24 et suivantes des valeurs de 95/150.

Q: 95° avant fermeture admission à partir du PMH ?
Q: 150° à partir de quand ?


ouvrir 150° avant PMH
fermer 95° apres PMH

Jarno lol! lol! lol!
Revenir en haut Aller en bas
Emmanuel Laurentz

Emmanuel Laurentz


Nombre de messages : 5075
Age : 64
Localisation : PACA
Date d'inscription : 07/12/2009

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMar 26 Fév 2013 - 14:40

Merci 1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 980796
Revenir en haut Aller en bas
motoholic71




Nombre de messages : 54
Age : 53
Localisation : Lisbon
Date d'inscription : 19/01/2013

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMar 26 Fév 2013 - 14:48

senso a écrit:
I'm so sorry for calling you the wrong name, I will not do it again.

I understand, I need to integrate the area, maths it not really my speciality but I think I can come up with the right numbers, I will open a post in the Technique part of the forum when I have more data and crazy ideas, so to not spam this topic, but thanks for the advices, its all that I need to keep me going in the right direction.
In the case of the italkit cylinder it is a W shaped exhaust port, that might be fun to integrate and arrive to the correct values.

Best regards Mr. Frits 1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 771973

I believe you can find a formula either in Bell &/or Blair publications,with described process to tackle odd port shapes and rod length is necessary for calc. I'll post if I find it,very busy today,might b easier?
Revenir en haut Aller en bas
GrahamB

GrahamB


Nombre de messages : 3456
Age : 62
Localisation : Lyon
Date d'inscription : 19/08/2011

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMar 26 Fév 2013 - 17:25

I think it's actually a double integral, since you need to sum up over angle the area of port open, which is itself the integral of the width of the port over the height...ie

Int(from A to B) [ Int(from h(t) to H) W(y) dy ] (dh/dt) dt

where W(y) is the width of the port at height y above BDC,
h(t) is the height of the piston above BDC at t° after BDC,

h(t)=s*(1-cos(t)) + sqrt(r²-s²*sin²(t)) -r,

where r is rod length and s=stroke/2

and (dh/dt) is the piston speed in mm/degree at a given crank angle, ie the derivative of the expression above,

(dh/dt)(t)=s*sin(t) - [s²*sin(t)*cos(t) / sqrt(r²-s²*sin²(t)) ]

Erk!

Easiest way would be to make up a spreadsheet allowing you to enter the port width at 1mm or 1/2mm steps...
Revenir en haut Aller en bas
motoholic71




Nombre de messages : 54
Age : 53
Localisation : Lisbon
Date d'inscription : 19/01/2013

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMer 27 Fév 2013 - 3:59

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 241515 True. Either way seems 1st step should be to roll some mil graph paper and scrib the ports shape
Revenir en haut Aller en bas
senso




Nombre de messages : 44
Localisation : Portugal
Date d'inscription : 08/11/2011

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMer 27 Fév 2013 - 21:37

Given the odd W shape of the exhaust port, I will make a port-map of the cylinder, then I will transfer it to some millimetre graphing paper and spent half a day counting little 1mm^2 squares, for some reason I have read the Jennings book some years ago and I got the impression that the time areas where calculated just by multiplying some values, probably I'm mistaken.

I will try also to get some points into Matlab and let it have all the fun doing the dual integral, or pull my hair off trying(I have a love-hate relation with Matlab.)

Thanks for the tips!

Revenir en haut Aller en bas
Hakkelaar




Nombre de messages : 9
Localisation : The Netherlands
Date d'inscription : 03/02/2011

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMer 27 Fév 2013 - 23:54

Hi Senso,

In Matlab I would creatie a Riemann Sum (Google: Riemann Sum Matlab). Easy to program and if the internationale steps are small enough, the result will be accurate enough for this application.

Cheers, Jacob
Revenir en haut Aller en bas
Hakkelaar




Nombre de messages : 9
Localisation : The Netherlands
Date d'inscription : 03/02/2011

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMer 27 Fév 2013 - 23:55

I meant integration steps...

D*mn iPhone...
Revenir en haut Aller en bas
GrahamB

GrahamB


Nombre de messages : 3456
Age : 62
Localisation : Lyon
Date d'inscription : 19/08/2011

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeJeu 28 Fév 2013 - 1:01

GrahamB a écrit:

(dh/dt)(t)=s*sin(t) - [s²*sin(t)*cos(t) / sqrt(r²-s²*sin²(t)) ]

Oops... forgot that I was working in degrees, not radians. The above should be multiplied by Pi/180...
Revenir en haut Aller en bas
Institute of TwoStrokes




Nombre de messages : 149
Localisation : Australie
Date d'inscription : 15/10/2010

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeMar 5 Mar 2013 - 21:42

[Vous devez être inscrit et connecté pour voir cette image]
With a 41.5mm carb we are going to try and crack the 50HP barrier with this.
Revenir en haut Aller en bas
Vagelis




Nombre de messages : 30
Localisation : Greece
Date d'inscription : 09/07/2011

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeSam 9 Mar 2013 - 2:06

Frits, would this pipe be an Aprilia pipe??

[Vous devez être inscrit et connecté pour voir cette image]

I came upon it while reading this paper 'Correlations for Wiebe function parameters for combustion simulation in two-stroke small engines'
[Vous devez être inscrit et connecté pour voir ce lien]

It looks very much like the RSA pipe design! Expect the first 'flange' part that is missing -they test different lengths.
Test engine is an 125cc rotary valve, 83°ex-113°tfr, which looks weird -maybe it's a honda(??) or kart..
Revenir en haut Aller en bas
https://s736.photobucket.com/albums/xx5/Vag1-2/
Frits Overmars

Frits Overmars


Nombre de messages : 2620
Age : 75
Localisation : Raalte, Holland
Date d'inscription : 12/10/2010

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeSam 9 Mar 2013 - 13:46

Vagelis a écrit:
Frits, would this pipe be an Aprilia pipe?.....It looks very much like the RSA pipe design!
It does, but it looks even more like an older Aprilia pipe, designated Tubo 55.
I suppose someone has hand-measured a Tubo-55 because the dimensions differ in some places, but only very slightly.
[Vous devez être inscrit et connecté pour voir cette image]
Revenir en haut Aller en bas
romeuh80




Nombre de messages : 102
Age : 34
Localisation : Leiria, Portugal
Date d'inscription : 15/10/2011

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeSam 9 Mar 2013 - 15:01

Frits Overmars a écrit:
Vagelis a écrit:
Frits, would this pipe be an Aprilia pipe?.....It looks very much like the RSA pipe design!
It does, but it looks even more like an older Aprilia pipe, designated Tubo 55.
I suppose someone has hand-measured a Tubo-55 because the dimensions differ in some places, but only very slightly.
[Vous devez être inscrit et connecté pour voir cette image]

I wonder if those tiny differences could be felt on dyno...
Revenir en haut Aller en bas
Vagelis




Nombre de messages : 30
Localisation : Greece
Date d'inscription : 09/07/2011

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeSam 9 Mar 2013 - 15:25

I see... Thanks for the schematic Frits!

About the A-tubo designs (21, 102 and now 55).. Were they part of a 100+ pipe testing procedure over Jan's years at Aprilia? Or they were code named after something?
There are just minor changes between these pipes.
It would be interesting to hear about the pipe development story, if you or Jan have some spare time (and wish to spare it here). :)

I take the liberty to post all three designs together. Hope you don't mind, since they were already in public:

Revenir en haut Aller en bas
https://s736.photobucket.com/albums/xx5/Vag1-2/
Frits Overmars

Frits Overmars


Nombre de messages : 2620
Age : 75
Localisation : Raalte, Holland
Date d'inscription : 12/10/2010

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitimeSam 9 Mar 2013 - 17:09

Vagelis a écrit:
About the A-tubo designs (21, 102 and now 55).. Were they part of a 100+ pipe testing procedure over Jan's years at Aprilia? Or they were code named after something?
Just a matter of evolution: after tubo # 1 came tubo #2, and so on.
Citation :
I take the liberty to post all three designs together. Hope you don't mind, since they were already in public
No problem.




Marc :
[Vous devez être inscrit et connecté pour voir ce lien]

1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 771973
Revenir en haut Aller en bas
Contenu sponsorisé





1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 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 2) (Locked)   1973 - [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked) - Page 40 Icon_minitime

Revenir en haut Aller en bas
 
[GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 2) (Locked)
Revenir en haut 
Page 40 sur 40Aller à la page : Précédent  1 ... 21 ... 38, 39, 40
 Sujets similaires
-
» [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 1) (Locked)
» [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 3) (Locked)
» [GP125] All that you wanted to know on Aprilia RSA 125, and more, by Mr Jan Thiel and Mr Frits Overmars (PART 5)
» [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 5)

Permission de ce forum:Vous ne pouvez pas répondre aux sujets dans ce forum
 :: ACTUALITES :: [GP] :: [GP125 (et 250 Snif!)]-
Sauter vers: