Daisy 74 +P



Author Topic: Daisy 74 +P  (Read 140 times))

Offline WeaselCat

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Daisy 74 +P
« on: February 02, 2019, 11:56:46 AM »
Couldn't resist getting a couple of the $20 Daisy 74 rifles from Cabelas. I knew from reviews that the advertised 350 fps would be optimistic. I didn't run it across the chrony but it is very weak. After watching a couple videos on youtube I decided to tear it apart and see what I could do to bump up the power.

Sorry, no fps results from the mods just effect on a tin can.

Out of the box it left only very small dents.

1. Stretch the hammer/barrel spring = no change, as expected.

2. Drill out the valve pin to 5/32" 5/64" = noticeably louder report and bigger dents.

3. I don't know the correct name of the part that pushes against the valve pin (have since learned that this is the firing pin) but I reduced the overall thickness from 10.1mm to 9.7mm. Material was only removed from the rear. This allows the valve pin to push a little further into the valve and increase dwell.
It now punches holes in the can. I'm sure that shot count will be much lower but that's OK.
I've had a couple feeding issues since the mod. I don't know if it's mod related or the old oxidized copperhead bbs.

I'll try to get some shots over the chrony later today.
« Last Edit: February 03, 2019, 04:54:46 AM by WeaselCat »
  • Ohio
QB77 .177, QB78D .22 & .177
FX Cyclone .22, Crown .177
Benjamin Disco .177, Titan NP .22, Wildfire .177
Umarex Gauntlet .177, Surge XT .177, Torq .22, Octane .177, Fusion .177
Gamo Hornet .177, Big Cat .177, Silent Cat .177
Crosman Redtail .22, 1322 24" Carbine, 2240, 2300T, MK-177
Beeman P17
Weihrauch HW30S .22
Remington XP .177
Ruger Airhawk Elite II .177
Daisy 1101WS .177, 853 .177
Norica Dragon GRS Evo Max .177, Black Eagle .22
Mrodair CP1M .177
RWS 34 .177

Offline cobalt327

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Re: Daisy 74 +P
« Reply #1 on: February 02, 2019, 05:26:00 PM »
I have hopped up a 74 before, results were pretty good. 74 mods begin on page 5  http://forum.daisymuseum.com/model-74-semi-auto_topic7497.html

Try using the attached diagram to describe what you did.
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Offline WeaselCat

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Re: Daisy 74 +P
« Reply #2 on: February 03, 2019, 04:48:54 AM »
I read through most of the linked discussion and it appears that I replicated two of the mods that you tried.

Shortening the firing pin: I think you shortened by .012". I shortened by .016".

Drill out the valve: You drilled 3/32". I drilled 5/64" (Incorrectly stated 5/32 in my original post)

I was able to put a few shots across the chrony and got between 350 and 360 fps. It was 35 in the garage so I had to let it warm up in the house prior to shooting. I think my feeding issues may have been from freezing CO2.
  • Ohio
QB77 .177, QB78D .22 & .177
FX Cyclone .22, Crown .177
Benjamin Disco .177, Titan NP .22, Wildfire .177
Umarex Gauntlet .177, Surge XT .177, Torq .22, Octane .177, Fusion .177
Gamo Hornet .177, Big Cat .177, Silent Cat .177
Crosman Redtail .22, 1322 24" Carbine, 2240, 2300T, MK-177
Beeman P17
Weihrauch HW30S .22
Remington XP .177
Ruger Airhawk Elite II .177
Daisy 1101WS .177, 853 .177
Norica Dragon GRS Evo Max .177, Black Eagle .22
Mrodair CP1M .177
RWS 34 .177

How do you word it... "Air Guns" or "AirGuns"?
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