Piontek’s vespa si

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This topic contains 90 reacties, has 20 deelnemers, and was last updated by piontek 12 years, 7 months geleden.

15 berichten aan het bekijken - 16 tot 30 (van in totaal 91)
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  • #486156

    piontek
    Topic starter
    Berichten: 78

    speedbuxy :

    piontek :
    I’ve made with a 3mm steel

    This will put alot of weight to the bike, could you not better made it from aluminium?

    You’re right, the fact is , I hadn’t think about it.:D
    At the beginning I was thinking to make it with VTR or carbon fiber, but it’s quite difficult
    and I don’t have the time.

    Anyway , it’ll be a future project.

    #486157

    JayL
    Bijdrager
    Berichten: 753

    Oh no man! You’re wasting a kick RV!! If you ever decide on selling the kick engine, I would gladly exchange a Malossi RV carters without kickstart with you for your RV kick carters :thumb

    #486280

    piontek
    Topic starter
    Berichten: 78

    some news.

    I’ve made a bakelite plate of 5mm that goes between the reedvalve and carters.
    I did it to increase the engine reaction at low revs.

    I’ve also modified the 0,30 reeds with boyesen method, and I got rid of the inside reed divisors.

    #486283

    piontek
    Topic starter
    Berichten: 78

    Here the engine assembled.

    I Had to build a 4mm plate to adjust the exccessive highness of the stroke. (it’s 46mm ;))
    Also due to the conrod’s lenght (90mm).

    Here a picture, when I was checking the stroke.

    #486285

    Javad
    Donateur
    Berichten: 1834

    That’s a good way to loose weight off the flywheel, i’ve never thought of that, looks cool too.

    <3 Thunderstone
    Check mijn perso!
    #486286

    piontek
    Topic starter
    Berichten: 78

    Hy Javad! Yes It’s a good way, I’ve made the holes and also machined on the top and on the side.

    #486287

    Jarco
    Bijdrager
    Berichten: 2522

    Looking sexy mate! :thumb

    #486288

    Javad
    Donateur
    Berichten: 1834

    How heavy is your flywheel now?

    <3 Thunderstone
    Check mijn perso!
    #486290

    peter139
    Bijdrager
    Berichten: 770

    Cool 46mm stroke how much real cc is that with your simonini cilinder. The idea of the flywheel is very nice

    you re talking about an front intake manifold. What do you mean with that? Picture? i am intrested

    Very special project! please keep this updated for us.

    #486293

    piontek
    Topic starter
    Berichten: 78

    Javad :
    How heavy is your flywheel now?

    To be honest, I didn’t weight it now, I just remember that originally was something around 1340 grams.
    I think , more or less that now is quietly 850-900 grams.

    #486292

    piontek
    Topic starter
    Berichten: 78

    peter139 :
    Cool 46mm stroke how much real cc is that with your simonini cilinder. The idea of the flywheel is very nice

    you re talking about an front intake manifold. What do you mean with that? Picture? i am intrested

    Very special project! please keep this updated for us.

    The real cc is 83.
    With front intake I mean this

    In the picture aren’t shown the holes to fix the carburettor.

    #486301

    SjoerdCiao
    Donateur
    Berichten: 1023

    How do you know where you can drill holes without touching the magnets?
    You may have a drawing that you’ve signed off where you were boring? I’ll go try it with my original flywheel.

    Greetings Sjoerd

    #486302

    piontek
    Topic starter
    Berichten: 78

    I don’t have drawings of it, I’ve just made it make with the rotary table.

    The magnets are below the wings.
    It’s also possible to see the magnets if you have a look under the flywheel.
    They have a different colour .

    #486303

    SjoerdCiao
    Donateur
    Berichten: 1023

    How many millimeter is between the center of the hole of the flywheel and the heart of the holes, what diameter drill did you use?

    #486305

    peter139
    Bijdrager
    Berichten: 770

    beste sjoerd je weer toch wel dat daar de magneten niet zitten? Gewoon even goed kijken en je ziet de magneten wel zitten.

    nice project ive also an lowered inlet on my reedvalve ciao and the results are awesome. You wil get alot better gas-response.

15 berichten aan het bekijken - 16 tot 30 (van in totaal 91)

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