SX3’s Ciao perso [English]

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This topic contains 235 reacties, has 30 deelnemers, and was last updated by Tiesman1986 3 weeks, 3 days geleden.

11 berichten aan het bekijken - 226 tot 236 (van in totaal 236)
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  • #789268

    Martino
    Bijdrager
    Berichten: 6970

    Mine Athena crank is still in the box on the shelf. And it will stay there a bit longer.

    Indeed this looks of, but not uncommon in the world of Piaggio/Vespa. It is known Polini cases and Malossi as well have problems with a flywheel which in combination of an aftermarket crank will scratching the cases. Try the new Pinasco flywheel and it’s even worse.  Another option is mill something from your flywheel so it runs freely.

    I thought you said building was the most fun? 😎

    #789284

    sx3-swe
    Topic starter
    Berichten: 283

    Maybe it’s best for it to stay in the box and look good. 🙂

    Building is one thing and paying top dollar and having to “fix” it is another. 🙂
    Sometimes I just want to invest my self out of a problem, instead of building it from scratch. But I expect the parts to be within decent tolerances. 1mm off compared to original crank isn’t acceptable in my opinion, and I don’t want to modify other good parts just to fit a faulty part.

    Damn, i feel anxiety when something comes out 0,05 mm off spec, I wonder how theese guys even can sleep at night when having 1 mm as tolerance during quality check. 😀

    I’ve tried both the OEM flywheel and Pinasco, they both get stuck. I have opened a ticket from the shop I bought it, see if they’ll accept the return.

    #789561

    12V
    Bijdrager
    Berichten: 37

    Have you tried the original flywheel, to check if you have less vibrations?
    The Vespa engine uses the flywheel as a part of its final balance factor, because the crankshaft has the rotary inlet cutout where the counterweight has to be.
    To my understanding, the pinasco flywheel is neutrally balanced, the original ones aren’t.

    And btw, i only buy Mazzucchelli crankshafts, never had any problems with them. The standard one (AMT002) will give you about 172° of inlet timing in a Speedengine. Runs fine like that, or expand it a little to ~185° or whatever you like.

    regards, Carsten
    #791826

    sx3-swe
    Topic starter
    Berichten: 283

    It’s been a while since last.. Worked with the engine yesterday and made a Pull-start bracket.
    The bracket that came with the PVR pullstart isn’t compatible with my CNC case.

    Further I shaped the transfers, not completly satisfied with the design but I think it will be good enough.
    Still some work left I need to do with the dremel and polish it up a little bit and so.

    IMG_20191123_115135_resized_20191124_073502038IMG_20191123_132135_resized_20191124_073501757IMG_20191123_132949_resized_20191124_073502482IMG_20191123_161324_resized_20191124_073502732IMG_20191123_161347_resized_20191124_073502256IMG_20191123_170307_resized_20191124_073551157IMG_20191123_161222_resized_20191124_073551631IMG_20191123_175447_resized_20191124_073550813IMG_20191123_183540_resized_20191124_073552121IMG_20191123_205244_resized_20191124_073551390IMG_20191123_175815_resized_20191124_073551860

    #791830

    speedbuxy
    Bijdrager
    Berichten: 10186

    Nice progress, its really getting there:thumb

    #791832

    Herr Flick
    Sleutelbeheerder
    Berichten: 6781

    Good to see an update again. Nice 😍

    46 Pinasco, Malossi RV, Schijfrem, Fox Vario
    Gele Racefrikandel
    #791840

    Tiesman1986
    Moderator
    Berichten: 837

    Nice man , so VCM 2020 its will be on display :mrgreen:

    #799940

    sx3-swe
    Topic starter
    Berichten: 283

    Case closed!

    20200527_18061420200528_18011320200701_19443120200701_20053420200704_100747

    • Deze reactie is gewijzigd 1 month geleden door sx3-swe.
    #800154

    Crullie
    Donateur
    Berichten: 1866

    And ? is the crankshaft turning smooth ?, how is bottum and top dead center ?, is the squeeze oké !!

    You can always work with different thickness gaskets for the right timing :thumb
    Great Pictures, nice work, beautifull engine 😛

    TICKLING BARN
    #800185

    Herr Flick
    Sleutelbeheerder
    Berichten: 6781

    Oh my god, this engine.

    46 Pinasco, Malossi RV, Schijfrem, Fox Vario
    Gele Racefrikandel
    #800202

    Tiesman1986
    Moderator
    Berichten: 837

    Very very Nice! , love to see this one flying :mrgreen:  and also a HK 2fast on top of it all ! You have any idea what kind of transmission you’re going to use with this kind of power ?

11 berichten aan het bekijken - 226 tot 236 (van in totaal 236)

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