DIY do it yourself
Master classes, instructions, useful tips, recipes.
» »Homemade silencer for motokosa
Homemade silencer for motokosa

Everyone knows this terrible sound of a working trimmer, it annoys not only the mower himself, but everyone around him. It’s worthwhile to work as a scythe even for a short time and this ringing just stands in your ears. This disadvantage was formed as a result of the use of a miniature silencer in its composition. I decided to make my own remote silencer for the trimmer, to significantly reduce the noise level produced by it.
The first thing to do is record the sound of the old, built-in instance, so that later you can compare it with the new exhibit.
Homemade silencer for motokosa

The level just went wild. Incredibly loud, especially near. The sound is sharp, high, sawing, disgustingly vile and annoying.

Will need


  • Steel tube 20-25 mm in diameter.
  • A piece of steel pipe is 80-100 mm in diameter and 120-150 mm long.
  • Glass wool.
  • Steel rectangle 3-5 mm thick.

Homemade silencer for motokosa

Making a silencer for a trimmer


We will manufacture a simple exhaust pipe silencer.
We put the pipe on a steel strip and spray it with aerosol red so that the pipe leaves the outline.
Homemade silencer for motokosa

We cut out two rounds with a grinder.
Homemade silencer for motokosa

We drill a hole in both. The diameter is the same for a thin tube.
Homemade silencer for motokosa

In a thin tube, we retreat from one edge of about 50 mm and drill holes in the scatter at a distance of a large cylinder.
Homemade silencer for motokosa

We insert the tube into the hole of one round piece. We make welding.
Homemade silencer for motokosa

We put on a large cylinder and weld it to the round piece.
Homemade silencer for motokosa

We stuff glass wool inside. It is not necessary to press strongly, and it should not move freely inside.
Homemade silencer for motokosa

We put on the second round and scald.
Homemade silencer for motokosa

We grind the whole structure.
Homemade silencer for motokosa

Next, you need to connect this muffler to the engine in exchange for the old one.
Remove the standard muffler.
Homemade silencer for motokosa

We lean it against a strip of steel to notice the working holes.
Homemade silencer for motokosa

We drill one large and two small holes.
Homemade silencer for motokosa

From another thin tube we make an oblique saw cut at a distance of 35-40 mm.
Homemade silencer for motokosa

Weld at a right angle.
Homemade silencer for motokosa

Weld to a rectangle with holes.
Homemade silencer for motokosa

We weld our pipe to the main muffler.
Homemade silencer for motokosa

We grind everything with a grinder. Type of finished silencer.
Homemade silencer for motokosa

Temporarily install the muffler in place for inspection. We start the trimmer and listen to the work.
Homemade silencer for motokosa

In the protective cover of the trimmer, cut the grooves for a new muffler.
Homemade silencer for motokosa

We temporarily install and verify that nothing interferes.
Homemade silencer for motokosa

We paint and install permanently a silencer instead of a regular one.
Homemade silencer for motokosa

Now motokosa works much quieter. The sound became lower in timbre, smoother, and, of course, lower in level. Using the tool has become more comfortable and more pleasant.

Watch the video


come back
Comments (20)
  1. igor
    #1 igor Guests April 29, 2019 10:52
    21
    wearing headphones is the most efficient and not reinventing the wheel.
    1. Well
      #2 Well Guests April 29, 2019 1:29 p.m.
      5
      And the people around? and the neighbors?
    2. Kashchei
      #3 Kashchei Guests May 4, 2019 9:35 a.m.
      3
      And to carry such a weight to a heavy braid on the neck?
      Immediately from the Lada stick)
  2. Guest Yuri
    #4 Guest Yuri Guests April 29, 2019 2:16 PM
    4
    you probably need to fix the muffler
  3. Guest Dmitry
    #5 Guest Dmitry Guests April 30, 2019 06:28
    33
    Judging by the thickness of the workpieces, the weight of the trimmer increased by 2 times ...
  4. Guest Dmitry
    #6 Guest Dmitry Guests April 30, 2019 1:57 p.m.
    9
    When buying a scythe, I also wanted to muffle the sound, but !!! This is not recommended. Power loss and overheating. Here is the price of the changes not approved by the manufacturer.
    1. Guest gosh
      #7 Guest gosh Guests April 30, 2019 10:33 p.m.
      5
      And the weight and vibration of the glushak himself will tear the thin silumin walls of the cylinder. They break, and so on, and then there is such a karkalyga suspended.
  5. Dima
    #8 Dima Guests April 30, 2019 11:33 p.m.
    0
    Well, power that is far from great will drop.
  6. Rinat
    #9 Rinat Guests May 1, 2019 08:12
    5
    But what about 2t? need a resonator and not a silencer result weight gain loss of debris and the end of the pistons!
  7. Akril
    #10 Akril Visitors May 1, 2019 11:13
    4
    As for me, at that time I could have added a glushak from a moped, it even technologically matches its name, and it weighs clearly less than this pile of metal
  8. Egor
    #11 Egor Guests May 1, 2019 9:20 p.m.
    1
    Afftarische! Respect! Rarely, who is so "calm" about ... t! I also hate this “signature” screech of “shtikhl” and “husky” - the latter screech household saws because of eternal air leaks. And by the way! On the "true Aryan" "Solo" a silencer with a CATALYTIC wire packing is used! It burns out the exhaust. But on figsov gasoline and with an excess of oil - it becomes hot and overheats the piston.
  9. Guest Dmitry
    #12 Guest Dmitry Guests May 2, 2019 4:37 p.m.
    2
    How much does it weigh??? probably like motokosa itself ???
  10. Guest Sergey
    #13 Guest Sergey Guests May 3, 2019 03:57 a.m.
    5
    Now you need to attach at least a couple of wheels to move it all ...
  11. Guest Michael
    #14 Guest Michael Guests May 3, 2019 10:20 AM
    0
    Powerful! The only thing - is it not heavy?
  12. Guest oleg
    #15 Guest oleg Guests May 4, 2019 12:15
    3
    as soon as you burn yourself, you will immediately redo it back
  13. Guest Dmitry
    #16 Guest Dmitry Guests May 5, 2019 1:33 p.m.
    0
    For the use of motokos in a residential area must be shot. It is possible with a glushak ...
  14. Guest Sergey
    #17 Guest Sergey Guests May 6, 2019 1:27 p.m.
    1
    The tool manufacturer put noise, exhaust resistance, and other loads into the design. A similar improvement will give a temporary and very fast killing motor effect. It’s a housework, not only is the brushcutter not so light, but it’s a kilo to throw ..... it's too hard .Headphones are good cheaper come out replacement braids.
  15. Guest Victor
    #18 Guest Victor Guests May 7, 2019 11:27
    1
    Now many manufacturers present a huge selection of battery technology. It works almost silently.
  16. Guest ALEXANDER
    #19 Guest ALEXANDER Guests May 8, 2019 11:02 a.m.
    0
    Calm really sounds ugly. It weighs much less and no modifications are needed.
  17. Guest Sergey
    #20 Guest Sergey Guests June 6, 2019 12:45
    0
    Now think about how to attach the wheels and the seat

Read also

Error codes for washing machines