[2 strokes] V2 90 degree, common crankcase,one carb

GrahamB a écrit:: I think the special wrist-pins Aprilia used with the ends welded shut were made by Mahle, but I would guess costs would be high unless you ordered a few hundred.

They were made by Pankl of Austria and if I could afford a few hundred of their pins I would take a year-long vacation instead.

photos - [2 strokes] V2 90 degree, common crankcase,one carb - Page 2 140286

I am sorry for you and your wife ..... Sad

I hope your project help you to be strong , good luck , i don t speak English very well , so i can t help you
because i don t understand all you make , sorry..... scratch

cristogrr a écrit:: Hello,
the main problem is the accumulation of heat on the pistons (internal parts are difficult to cool)

Un "moteur" parfaitement "refroidi" ne produit plus de travail et s'appelle une "chaudière" photos - [2 strokes] V2 90 degree, common crankcase,one carb - Page 2 72689

photos - [2 strokes] V2 90 degree, common crankcase,one carb - Page 2 72689

Niels nous parle du rendement, le vrai photos - [2 strokes] V2 90 degree, common crankcase,one carb - Page 2 241515

photos - [2 strokes] V2 90 degree, common crankcase,one carb - Page 2 727249

photos - [2 strokes] V2 90 degree, common crankcase,one carb - Page 2 771973

Nombre de messages : 36 Localisation : Denmark Date d'inscription : 26/02/2013

Pline le nouveau a écrit:: I am sorry for you and your wife .....
I hope your project help you to be strong , good luck , i don t speak English very well , so i can t help you
because i don t understand all you make , sorry.....

Thank You Pline and I appreciate You writing in english much better than my french.

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

First picture is a V2 90 degree for being ligther, less vibrating and using less fuel than Rotax 912 for aircrafts with 60 to 80 horsepower

Next three pictures are a radical test engine for Junkers research,both aircraft and Junkerator(The twin AC generator thing)

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

A much simpler solution is to take the two scrap MZ150 crankcases/cranks I have here,but straigthforward solutions was never my way

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

I know it has nothing to do with motorbikes but reading all from the two gentlemen from Aprilia has been a great pleasure and I hope some enjoy my pictures

Nombre de messages : 36 Localisation : Denmark Date d'inscription : 26/02/2013

Emmanuel Laurentz a écrit:

Emmanuel Merci beaucoup

Niels

Nombre de messages : 36 Localisation : Denmark Date d'inscription : 26/02/2013

Fügner a écrit:

cristogrr a écrit:: Hello,
the main problem is the accumulation of heat on the pistons (internal parts are difficult to cool)

Un "moteur" parfaitement "refroidi" ne produit plus de travail et s'appelle une "chaudière" photos - [2 strokes] V2 90 degree, common crankcase,one carb - Page 2 72689

Niels nous parle du rendement, le vrai photos - [2 strokes] V2 90 degree, common crankcase,one carb - Page 2 241515

Hello Fugner

Racing engines shall make so much horsepower as possible for a limit of cubic centimeters .
Fuel consumption and vibrations are not so important.
Aircraft engines are different but still better if two stroke and the two stroke pollution/cleanness problem is not so great for aeroplanes but noise is.

Racing is only to play ! photos - [2 strokes] V2 90 degree, common crankcase,one carb - Page 2 980796

Sulzer two stroke or Junkers opposite engine is to work.

Habituellement sur un OP engine (equicourant) on décale les deux pistons pour diminuer le croisement admission-échappement. (de 15° environ)

Soit par la liaison des deux bas moteur, soit avec une bielle principale et une secondaire ou à fourche
sur un moteur en U; Qui n'est rien d'autre qu'un OP replié... (puch, DKW...etc);

Pour éviter d'utiliser des carters pompe de 2 temps il est souvent couplé à un compresseur.

» [2 strokes] Exaust pipe
» [2 strokes] Culasse CNC pour KR1
» [Technique] 2 temps....et l'injection ?....
» [2 strokes] M.U.L.S.
» [2 Strokes] Cristian Polverelli 500 V4