AccueilCalendrierGalerieFAQRechercherS'enregistrerConnexionNouveaux messages depuis dernière visite
Rechercher
 
 

Résultats par :
 
Rechercher Recherche avancée
Qui est en ligne ?
Il y a en tout 22 utilisateurs en ligne :: 2 Enregistrés, 0 Invisible et 20 Invités :: 2 Moteurs de recherche

collecto, polcat88

Le record du nombre d'utilisateurs en ligne est de 187 le Lun 3 Déc 2012 - 14:45
Derniers sujets
» [Technique] MotoGP : Ducati
Aujourd'hui à 1:26 par Marc

» [Oldies] Règlement GP 1949
Aujourd'hui à 1:21 par Marc

» [Oldies] Ils ont p'loté la belle à culbuter de Varese (2ème partie)
Hier à 18:50 par damienfollenfant

» [Oldies] Jack Findlay, pilote de légende
Hier à 18:24 par charly7728

» [Oldies] Renzo Pasolini, photos insolites
Hier à 18:08 par damienfollenfant

» [GP] MotoGP et télévision...
Hier à 17:23 par crigar

» [Oldies] C'était le bon temps...
Hier à 16:35 par Dakota

» [Oldies] "Martin Strattom" by ecrrmoto
Hier à 16:11 par ecrrmoto

» [Oldies] Documentation Motobécane
Hier à 15:47 par Mykeul

» [GP] Johann Zarco
Hier à 15:38 par Mykeul

» [MotoGP] KTM
Hier à 13:16 par freret alain robert

» [GP] Fabio Quartararo
Hier à 12:49 par Vivien57

» [Technique] La JBB-Metiss de A à Z...
Hier à 9:54 par BM1150R

» Christophe Guyot
Ven 18 Jan 2019 - 22:13 par Mykeul

» [Oldies] Malheureusement, ils sont partis...
Ven 18 Jan 2019 - 19:05 par ONLYAM

» [SORTIES] Charade Heroes - 22-23 Septembre 2018
Ven 18 Jan 2019 - 18:33 par spirit

» [WSBK] 2019
Ven 18 Jan 2019 - 17:48 par EDOUARD Jean

» Alain Genoud
Ven 18 Jan 2019 - 14:30 par bike70

» [Oldies] Angel Nieto Mike Hailwood ( Part 4 )
Ven 18 Jan 2019 - 13:38 par tripotemascagne

» [Oldies] Encore une BOUGIE !
Ven 18 Jan 2019 - 12:23 par justin

»  [Oldies] Les découvertes de Tonton Hubert (Part 4)
Jeu 17 Jan 2019 - 23:02 par philippe7

» [Oldies] Side-Car: quelques images
Jeu 17 Jan 2019 - 18:51 par enndewell joel

» [Oldies] Les photos d'Eilo Taka-prami
Jeu 17 Jan 2019 - 18:44 par philwood

» [MotoGP] Michelin
Jeu 17 Jan 2019 - 14:32 par Mykeul

» Grégory LEBLANC ....
Jeu 17 Jan 2019 - 12:13 par PLP

» MONDIAL Scugnizzo 75cc.
Mer 16 Jan 2019 - 17:39 par perruche

» [Oldies] Honda 750 Daytona
Mer 16 Jan 2019 - 11:59 par Tonton Hub

» [SORTIE] Amicale - des anciens – coureurs - motocycliste
Mer 16 Jan 2019 - 11:16 par enndewell joel

» [Sorties] Calendrier 2019 des manifestations, roulages, circuits, côtes,....
Mer 16 Jan 2019 - 11:15 par spyderman 32

» [Oldies] Quizz??????
Mer 16 Jan 2019 - 9:40 par MacPepR

La réclame...
Mots-clés
yamaha moto france motobecane 1000 eurosport icgp suzuki triumph zone fourche metiss ROAD classic aprilia ducati 2013 RACING coupe rouge wanted side geco 2018 aermacchi 1973
Meilleurs posteurs
Marc
 
philwood
 
mickey
 
Pierre"PhilRead"
 
EDOUARD Jean
 
Jarno
 
Fügner
 
yves kerlo
 
janpol84
 
Dialmax
 
La réclame...

Partagez | 
 

 [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 
Aller à la page : Précédent  1 ... 5, 6, 7 ... 23 ... 40  Suivant
AuteurMessage
Jan Thiel



Nombre de messages : 470
Age : 78
Localisation : Bangkok
Date d'inscription : 12/10/2010

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)   Jeu 16 Aoû 2012 - 5:46

Honda cylinders have an oval exhaust duct!
Revenir en haut Aller en bas
GtG001



Nombre de messages : 81
Age : 64
Localisation : Adelaide, Australia
Date d'inscription : 03/06/2012

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)   Jeu 16 Aoû 2012 - 5:50

Yes, oval port but not as rectangle as the RSA – do you think they would benefit from the RSA shape?
Revenir en haut Aller en bas
Jan Thiel



Nombre de messages : 470
Age : 78
Localisation : Bangkok
Date d'inscription : 12/10/2010

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)   Jeu 16 Aoû 2012 - 5:55

I really do not know.
It could be tried, only after trying you can know!
But of course their exhaust port shape is a lot different.
Of course we also tried the 'Honda' exhaust shape.
It gave less power than ours, but carburation was a bit easier.
About 1,5Hp less.


Dernière édition par Jan Thiel le Jeu 16 Aoû 2012 - 6:17, édité 1 fois
Revenir en haut Aller en bas
GtG001



Nombre de messages : 81
Age : 64
Localisation : Adelaide, Australia
Date d'inscription : 03/06/2012

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)   Jeu 16 Aoû 2012 - 5:58

Thank you Jan.
Revenir en haut Aller en bas
fpayart

avatar

Nombre de messages : 937
Age : 69
Localisation : LYON
Date d'inscription : 11/01/2010

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)   Jeu 16 Aoû 2012 - 8:20

The sizes are 39.5 width x 27.5 height (without the radius).
Now I can imagine your next request
The opening time is 196 ° measured without taking into account the radius.

Edit by Damien (Francis's son...), Maybe you were talking about this dimensions ? :

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

Revenir en haut Aller en bas
http://www.fperacing.com/
fpayart

avatar

Nombre de messages : 937
Age : 69
Localisation : LYON
Date d'inscription : 11/01/2010

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)   Ven 17 Aoû 2012 - 14:32

Right Damian, sorry,I just missed a little word.

GtG001 a écrit:

Will you tell us the final width and height of the RSA exhaust exit ?

Now you have all the informations entry and exit.

Revenir en haut Aller en bas
http://www.fperacing.com/
Haufen



Nombre de messages : 55
Localisation : Allemagne
Date d'inscription : 23/12/2011

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)   Ven 17 Aoû 2012 - 16:39

Jan, did you ever compare the routing of the RSW and RSA exhaust pipes? I am wondering if the outcome would have been different with the almost straight routing of the RSW exhaust compared to the routing of the RSA exhaust pipe (same pipe dimensions on both).
Revenir en haut Aller en bas
GtG001



Nombre de messages : 81
Age : 64
Localisation : Adelaide, Australia
Date d'inscription : 03/06/2012

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)   Sam 18 Aoû 2012 - 2:46

Thank you Jan, Francis and Damian for the information.

Congratulations Francis and Damian (FPE) on your great results in the CIK Superkart World Title recently with your new motor.
Thank you Jan and Frits as your gift of information keeps bearing fruit for others too.

Best regards
Allan.



Dernière édition par GtG001 le Sam 18 Aoû 2012 - 9:19, édité 2 fois
Revenir en haut Aller en bas
Jan Thiel



Nombre de messages : 470
Age : 78
Localisation : Bangkok
Date d'inscription : 12/10/2010

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)   Sam 18 Aoû 2012 - 4:52

Haufen a écrit:
Jan, did you ever compare the routing of the RSW and RSA exhaust pipes? I am wondering if the outcome would have been different with the almost straight routing of the RSW exhaust compared to the routing of the RSA exhaust pipe (same pipe dimensions on both).

I think the bend in the RSA exhaust lost us some power.
And also the necessary longer tailpipe seemed to cause some detonation.
If I had to make a new engine today I would certainly NOT make another RSA!
And it would have a straight exhaust.
Revenir en haut Aller en bas
GtG001



Nombre de messages : 81
Age : 64
Localisation : Adelaide, Australia
Date d'inscription : 03/06/2012

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)   Lun 20 Aoû 2012 - 4:27

Hi Jan,
How much HP do you think it cost making the pipe for the RSA (bent) compared to the straight one. Could it have been compensated in dimensions for the bend or was it a direct loss?

Thanks,
Allan.
Revenir en haut Aller en bas
Jan Thiel



Nombre de messages : 470
Age : 78
Localisation : Bangkok
Date d'inscription : 12/10/2010

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)   Lun 20 Aoû 2012 - 4:29

I estimate about 0,5 HP.
The bend was negative, as well as the longer tailpipe.
Revenir en haut Aller en bas
XpTpSMTT



Nombre de messages : 37
Localisation : Hellas
Date d'inscription : 08/02/2012

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)   Lun 20 Aoû 2012 - 8:37

Jan Thiel a écrit:
...................
If I had to make a new engine today I would certainly NOT make another RSA!
And it would have a straight exhaust..............
So what path would you take,generaly?two rotary?
belt primary drive as mentioned before?Am i asking too much? Very Happy
Revenir en haut Aller en bas
Jan Thiel



Nombre de messages : 470
Age : 78
Localisation : Bangkok
Date d'inscription : 12/10/2010

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)   Lun 20 Aoû 2012 - 8:46

Definitely two rotary but no belt drive.
Revenir en haut Aller en bas
fpayart

avatar

Nombre de messages : 937
Age : 69
Localisation : LYON
Date d'inscription : 11/01/2010

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)   Lun 20 Aoû 2012 - 13:42

XpTpSMTT a écrit:
So what path would you take,generaly? two rotary? Very Happy
Jan Thiel a écrit:
Definitely two rotary but no belt drive.

Is it I missed something somewhere? Two rotary, one on each side?
Revenir en haut Aller en bas
http://www.fperacing.com/
XpTpSMTT



Nombre de messages : 37
Localisation : Hellas
Date d'inscription : 08/02/2012

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)   Lun 20 Aoû 2012 - 14:01

fpayart a écrit:
XpTpSMTT a écrit:
So what path would you take,generaly? two rotary? Very Happy
Jan Thiel a écrit:
Definitely two rotary but no belt drive.

Is it I missed something somewhere? Two rotary, one on each side?

Υes.why not? you could-on a single cylinder-
have a straight shooting pipe towards the rear with the good wheight distribution
of the rsw engine.
Of course there would be a long way to go.
What would happen with the mixtures colliding in the center on the con rod?
And many more like the rotating crankshaft etc.
But then wouldn't you also try direct injection?
Or maybe infinately variable valve area-get rid of the carbs?
Or maybe this coffee is too strong...
Revenir en haut Aller en bas
Haufen



Nombre de messages : 55
Localisation : Allemagne
Date d'inscription : 23/12/2011

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)   Lun 20 Aoû 2012 - 20:08

Jan Thiel a écrit:
Definitely two rotary but no belt drive.

Wouldn't a single front Disc be nice also? With the carb facing forward? Or would there be not enough space? The airbox and maybe some isolating material would isolate the carb from the radiator heat.
Revenir en haut Aller en bas
XpTpSMTT



Nombre de messages : 37
Localisation : Hellas
Date d'inscription : 08/02/2012

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)   Lun 20 Aoû 2012 - 22:08

Haufen a écrit:
Jan Thiel a écrit:
Definitely two rotary but no belt drive.

Wouldn't a single front Disc be nice also? With the carb facing forward? Or would there be not enough space? The airbox and maybe some isolating material would isolate the carb from the radiator heat.

Your answers are in part one around page 30 i think.
Revenir en haut Aller en bas
Jan Thiel



Nombre de messages : 470
Age : 78
Localisation : Bangkok
Date d'inscription : 12/10/2010

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)   Mar 21 Aoû 2012 - 6:06

Haufen a écrit:
Jan Thiel a écrit:
Definitely two rotary but no belt drive.

Wouldn't a single front Disc be nice also? With the carb facing forward? Or would there be not enough space? The airbox and maybe some isolating material would isolate the carb from the radiator heat.

To do this succesfully the crankshaft would have to turn backwards.
And there is insufficient space for the airbox!
Revenir en haut Aller en bas
cristogrr

avatar

Nombre de messages : 1761
Age : 54
Localisation : sirault belgique
Date d'inscription : 26/04/2010

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)   Mar 21 Aoû 2012 - 10:53

To success all these "mods" to find space behind the cooler, what you think if you put the havier gear box in front of the crankshaft , you have to add an axle to compensate the counterrunning, at low position (thanks the space left by the straight exhaust) and put the drive sprocket to is optimal positionning...
Revenir en haut Aller en bas
Jan Thiel



Nombre de messages : 470
Age : 78
Localisation : Bangkok
Date d'inscription : 12/10/2010

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)   Mar 21 Aoû 2012 - 11:27

Adding an axle for counterrunning would cost you about 5% power.
For a 125 that means you lose about 2,7HP.
Do you still like it?
Revenir en haut Aller en bas
Howard Gifford



Nombre de messages : 136
Age : 62
Localisation : Ottawa Canada
Date d'inscription : 01/05/2012

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)   Mar 21 Aoû 2012 - 15:53

Could you have a rear facing exhaust port with the rotary inlet still on the rear of the motor and keep the forward rotation?
Revenir en haut Aller en bas
Haufen



Nombre de messages : 55
Localisation : Allemagne
Date d'inscription : 23/12/2011

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)   Mar 21 Aoû 2012 - 16:03

Or you could have the cylinder pointing downwards.
Revenir en haut Aller en bas
fpayart

avatar

Nombre de messages : 937
Age : 69
Localisation : LYON
Date d'inscription : 11/01/2010

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)   Mar 21 Aoû 2012 - 17:33

Like those ones ?

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

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

Revenir en haut Aller en bas
http://www.fperacing.com/
Haufen



Nombre de messages : 55
Localisation : Allemagne
Date d'inscription : 23/12/2011

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)   Mar 21 Aoû 2012 - 21:09

fpayart a écrit:
Like those ones ?

Exactly :) Maybe even a bit more to allow for the best compromise between an exhaust pipe as straight as possible and (no) plug fouling (if the engine should prove to be prone to).
Revenir en haut Aller en bas
Jan Thiel



Nombre de messages : 470
Age : 78
Localisation : Bangkok
Date d'inscription : 12/10/2010

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)   Mer 22 Aoû 2012 - 8:23

Howard Gifford a écrit:
Could you have a rear facing exhaust port with the rotary inlet still on the rear of the motor and keep the forward rotation?

I do not think so.
Revenir en haut Aller en bas
Contenu sponsorisé




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)   

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 6 sur 40Aller à la page : Précédent  1 ... 5, 6, 7 ... 23 ... 40  Suivant
 Sujets similaires
-
» WANTED TONY "Barbe-rousse"
» Traduction, help wanted
» Wanted Kader
» Bannière Wanted
» Graphiste Wanted

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