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DIY foldable crossbow

Category: DIY weapon / DIY guns

DIY foldable crossbow

Foldable crossbow

difficultyDifficulty: ☢☢☢☢☢

timeTime: Couple of days

ScrapFrom scrap: ██░░░░░░░░ 20%


PreamblePreamble

In this topic I want to tell you about how a made crossbow with foldable bow and buttstock.


MaterialsMaterials

  • Suspension from heavy car
  • Sheet metal
  • Strong board
  • Steel cable
  • Bolts and nuts
  • Aluminum pipes
  • Sticks from the crib
  • The steel corners
  • The steel profile
ToolsTools

  • Angle grinder or hacksaw
  • Cutters
  • Fix tools
  • Welding machine
  • Emery
  • Pliers
  • Vices

    Part 1. DIY crossbow


  • Old crossbow

    First I built an ordinary crossbow with pulley system. Bow made of car's spring, fastened with metal plate and steel corners. Bowstring is made of steel cord. Body of a crossbow I made of fiberglass and aluminium.
    DIY foldable crossbow

    DIY foldable crossbow

  • Pulleys

    Are made on lathe
    DIY foldable crossbow

    DIY foldable crossbow

    DIY foldable crossbow

  • Bolts

    Bolts consisted two parts: shaft is made of stick of crib's back with stud inside it. Second is made of antenna's tube with pressed nut.
    I achieve the bolt with easily exchangeable tips and balance

    DIY foldable crossbow

    DIY foldable crossbow

  • Tail

    3 tails are made of thick paper and fastened with thread and glue
    DIY foldable crossbow

  • Result

    Tension is about 50 kg. Straight part of flight path is about 40 meters.
    Crossbow was very nice, but I decided to make another one, with foldable design

  • Часть вторая


  • Step 1

    It will base on my first crossbow. I treat car's spring to triangle shape. Wide edge to attach to body and narrow for pulleys

  • Step 2

    Body of a crossbow is a two connected plywood layers. Gap between them serves as groove for bolt.

  • Step 3

    Each half of bow is attached with steel plates and fastened to body on hinges.
    DIY foldable crossbow

    DIY foldable crossbow

  • Step 4

    Hinge is a piece of steel rectangle profile, axis of rotation is a steel tube.
    DIY foldable crossbow

    DIY foldable crossbow

    DIY foldable crossbow

    DIY foldable crossbow

    DIY foldable crossbow

  • Step 5

    Also for improving mobility I decided to make foldable buttstock. It would work like this
    DIY foldable crossbow

    DIY foldable crossbow

  • Step 6

    Trigger system cut of 4 mm steel sheet
    DIY foldable crossbow

  • Step 7

    Crossbow's body with mount for buttstock. It is all made of steel plate and fastened with bolts and nuts.
    DIY foldable crossbow

    DIY foldable crossbow

    Assembled crossbow
    DIY foldable crossbow

    DIY foldable crossbow

    Folded
    DIY foldable crossbow

    DIY foldable crossbow

  • Step 8

    Clamp for bolts I made of steel
    DIY foldable crossbow

  • Buttstock

    Here you can see buttstock in two positions
    DIY foldable crossbow

    DIY foldable crossbow

  • Step 9

    I add a handle to nut to ease a process of folding bow
    DIY foldable crossbow

  • Final photoset

    DIY foldable crossbow

    DIY foldable crossbow

    DIY foldable crossbow

    DIY foldable crossbow


    Near my first diy crossbow
    DIY foldable crossbow

    Author: deminpetr74

VideoVideo

Unfortunately I don't have a video with this crossbow, but I suggest you to watch a video about very powerful strike crossbow with intresting design of arming

ResultsResults and tips

  • Tenssion of that crossbow is about 30 kg
  • Comfortable foldable design of bow and buttstock makes crossbow very mobile
  • This diy crossbow is pretty heavy

Tags: crossbow

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