Piet’s Simonini 4p

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Dit onderwerp bevat 59 reacties, heeft 23 stemmen, en is het laatst gewijzigd door zevenenergie 4 weken geleden.

15 berichten aan het bekijken - 1 tot 15 (van in totaal 60)
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  • #261884

    Piet30
    Topic starter
    Berichten: 1069

    DR-flenny forced ma to post my birthday present here.

    gasket need some rework to fit

    the small Malossi inlet will be changed by a Stage6 with larger membrane for a 24mm carb

    #282910

    Lennaert
    Bijdrager
    Berichten: 4040

    Haha No No!

    I did not force anything and next to that i did not say HERE.
    This is a Perso ;)! So you need to enlighten us with more informations on your plans and the future of this engine.
    What moped etc More pictures and more explaining mister mister!

    #282911

    Piet30
    Topic starter
    Berichten: 1069

    DR-flenny forced me to put it under a Grillo :whistle

    For that I have two options

    #282912

    Docs
    Donateur
    Berichten: 2711

    The flowers go realy nice with the Simo engine 😀 😛

    #282913

    Florian
    Moderator
    Berichten: 3433

    FLOWERPOWERRRRR:pimp

    #282914

    Fredzzz
    Moderator
    Berichten: 1415

    Das sieht ja gut aus, wie immer 😉

    Ich nehme an dass du im Zylinderkopf auch ein Dekoventil ein baust?

    #282916

    Wilk1985
    Moderator
    Berichten: 3418

    Nice birthday present!! But i would not say the same about the Flowerpower Grillo so if i can vote i vote for the blue Grillo as i like it :).

    #282919

    yellowcitta
    Bijdrager
    Berichten: 63

    for sure the flowerpower:D

    #282921

    speedbuxy
    Bijdrager
    Berichten: 9775

    Yeah 4 sure the flowerpower Grillo:thumb:lol

    #282922

    MarcoS
    Donateur
    Berichten: 500

    I’m green :lol take the flowerpower indeed…

    #278854

    SpeedyVespa
    Donateur
    Berichten: 1103

    Looks great:thumb

    #262425

    Piet30
    Topic starter
    Berichten: 1069

    short update after a while.

    As I heard negative experiences with new Simonini krukas I decided to order a 46mm stroke Sprocatti krukas.

    If you compare the connecting rods of a Simo krukas (top) and a Sprocatti krukas(bottom)the Sprocatti looks much more durable for a 81,5cc engine.

    also the Sprocatti connecting rod has a slot in the piston pin bearing area for greasing

    then I made first rough pre assembly of the components. There need to be some rework on the piston in the marked area

    also there is not much gap between piston on lower end position to the carter.

    the piston window is not complete open compared to the window in the cylinder

    and looking through the inlet side, there are cylinder and piston blocking a nice gas flow. This will need to be reworked as well.

    #262404

    Martino
    Bijdrager
    Berichten: 6413

    You’ve tried to made visable the differences between the Simonini and Sprocatti cranks, but it looks like you have not the new type Simonini 46mm stroke on photo. Your crank by the looks of it, looks more like a 44m stroke?

    A new type Simo 2007 crank looks very similar to an Sprocatti crank.
    Still like to know which connecting rod Sprocatti uses as it looks like they cut of the old logo or branding.

    Some reference:
    http://vespa-ciao.nl/page.php?id=45

    #262281

    Piet30
    Topic starter
    Berichten: 1069

    yes, that is my old 44mm Simo crank.

    Didn’t konw the Simo crank look similar now. But I have heard from a PMT member that he bought a new Simo crank with bad bearing passing.
    So I decided not to buy a Simo one.

    #262271

    Fredzzz
    Moderator
    Berichten: 1415

    That is true. I’ve had several different (NEW) Simonini crankshafts that all had bad bearing clearances.

15 berichten aan het bekijken - 1 tot 15 (van in totaal 60)

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