[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.

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

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

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

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

[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.

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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)

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

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

Niels nous parle du rendement, le vrai [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 ! [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