Pagina 2 di 2 primaprima 12
Visualizzazione dei risultati da 11 a 13 su 13

Discussione: Vsr10 rapporto cilindro-canna, teoria e foratura del cilindro.

  1. #11
    Soldataccio L'avatar di Hilog
    Club
    Alcoholic Bullets Softair
    Età
    39
    Iscritto il
    07 Apr 2008
    Messaggi
    2,160

    Predefinito

    Le misure dovrebbe essere 73mm lunghezza e diametro 23,24mm...la canna ho messo una madbull 6.03 da 50

    P.s.
    Calcola che originale ak74u della golden bow monta un cilindro forato a metà e canna da 45 piu perdite varie tra spingipallino e testa pistone
    Ora monto guidamolla cuscinettato element, sp90 guarder, testa cuscinettata element, cilindro pieno fps, spingipallino con o-ring element, gommino hop up g&g verde canna madbull 6.03 da 50cm e gli 0.20 escono 97-100ms

  2. #12
    Recluta
    L'avatar di Cowboy_sciacalli
    Club
    A.S.D. Sciacalli
    Età
    34
    Iscritto il
    03 Sep 2006
    Messaggi
    1,401

    Predefinito

    TUNING THE CYLINDER TO BARREL TO BB WEIGHT.
    Note: This will give the bb the maximum energy that your rifle can produce and it will make your gun very quiet. (This will work better than any other mod to make your gun quiet. It is even better than filling the stock with foam which will make your gun heavy.) If the cylinder to barrel ratio is not matched right, for example the barrel is to short, then the excess air after the bb leaves the muzzle pushes the cracking sound from the piston slamming into the cylinder head, out the end of the barrel. If the barrel is the perfect length for the cylinder (depending on your bb weight), then most of that noise will be trapped in your barrel.
    The way this works is that a lighter bb does not take much pressure to push it through the barrel. So it needs a longer barrel otherwise it will be pushed out to early and therefore making the slamming sound. A heavy bb needs more pressure to push it out and so if the barrel is to long there is not enough air in the cylinder push it out properly and this will make the bb fly less accurately. So you need to get the perfect match between cylinder to barrel to bb weight.
    In effect your bb weight can alter the barrel to cylinder ratio. The heavier a bb the shorter the barrel it needs or the lighter the bb the longer the barrel should be.

    Here is a rough guideline as to which bb and barrel to use to get the most efficiency from your cylinder.

    So chrono your gun and work out the FPS. Then look at the chart and work out the weight bb you need for your FPS. (You can always use a slightly heavier bb and the energy/backspin of the gun should still be able to carry it)
    330-370fps = 0.25gm-0.30gm
    370-420fps = 0.30gm-0.32gm
    420-450fps = 0.32gm-0.34gm
    450-500fps = 0.34gm-0.38gm
    500-540fps = 0.38gm-0.43gm
    540fps upwards = 0.45gm+

    (These FPS/BB weights can be used with any gun setup. So if your pistol is firing at a ridiculous 540fps then use a 0.45gm as long as there is enough air in the cylinder to push it out the barrel)
    (Also note that often you can increase the weight of your bb if you use a longer nub on you hopup rubber. The longer nub will help to create more backspin and this will help carry the bb further. This is why R-hop is so effective)

    Now to get the best efficiency from your VSR10 cylinder with this bb weight you need to get the right length barrel
    Note: I use 6.03mm barrels and information in purple is for the tech head type people and so if you are not into tech stuff and are just starting out please ignore the purple text


    Action Army Cylinder Dimensions
    Piston Travel Length: 90.2mm
    Cylinder diameter: 22.5mm
    Compression Volume: 35864 mm^3

    So see the chart below:
    0.3gm bb use a 554mm barrel (15821 mm^3) = 2.26:1

    0.32gm bb use a 530mm barrel (15136 mm^3) = 2.36:1
    0.36gm bb use a 500mm barrel (14279 mm^3) = 2.51:1
    0.4gm bb use a 470mm barrel (13422 mm^3) = 2.67:1
    0.43gm bb use a 430mm barrel (12279 mm^3) = 2.92:1
    0.45gm bb use a 400mm Barrel (11423 mm^3) = 3.13:1

    Note: These Barrel lengths may change as I try more barrel lengths. Also when testing for the perfect barrel length for each bb weight I had no air break on my piston. If you have an air break then the barrel lengths will be shorter than I have stated here.


    Credits: airsoftsniper forum

    Questi sono i dati da cui ho preso spunto e nel mio caso il rapporto indicato funziona perfettamente

  3. #13
    Spina L'avatar di White Death
    Club
    non affiliato
    Iscritto il
    01 Aug 2016
    Messaggi
    56

    Predefinito

    Interessante, è una cosa a cui pensavo da tempo, proprio prendendo spunto dai cilindri formati degli elettrici.

Pagina 2 di 2 primaprima 12

Questa pagina è stata trovata cercando:

https:www.softairmania.itthreads295400-Vsr10-rapporto-cilindro-canna-teoria-e-foratura-del-cilindro

SEO Blog

Tag per questa discussione

Licenza Creative Commons
SoftAir Mania - SAM by SoftAir Mania Community is licensed under a Creative Commons Attribuzione - Non commerciale - Non opere derivate 3.0 Italia License.
Based on a work at www.softairmania.it.
Permissions beyond the scope of this license may be available at http://www.softairmania.it.
SoftAir Mania® è un marchio registrato.