Umarex Umarex Notos Exploded Diagram for Porting and Trigger job

[Airgun Al]

Attached, is a exploded diagram and parts list, for the Notos.
This might help those like myself, that would like to open up the ports, smooth out the trigger, add a bottle, etc.

View attachment Notos Diagram.pdf

View attachment Notos parts list (1).pdf

 

[Airgun Al]

I have not had my Notos apart yet, but I believe to simply port it, (without the addition of a drop block and bottle) I would be opening up the passages on the following 4 parts:

1. #1 The barrel
2. #42 The breech
3. #39 Connector
4. #90 Sleeve

Is this correct?

 

[88turbocoupe]

#40 (poppet seat) 39 i think is the barrel sleeve isolator

 

[Airgun Al]

The Notos is very quiet.
Im courious how much louder it gets, after simply porting.
Is there a noticable difference?

 

[Stubbers]

The Notos is very quiet.
Im courious how much louder it gets, after simply porting.
Is there a noticable difference?

You'd be increasing the max flow rate of the porting, thus increasing pressure behind the pellet and down the barrel, resulting in more energy. Yes it would be noticeable to someone with good hearing, the younger the person the more noticeable (hearing worsens as we age, regardless of damage).

-Matt