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Author Topic: Power Modifying Daisy 880 and Winchester 1977  (Read 1052 times))

Offline Rob M

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Re: Power Modifying Daisy 880 and Winchester 1977
« Reply #20 on: October 09, 2022, 09:03:11 PM »
a few yrs back i did every mod imaginable to the 880, was pumping to 2200 psi and had a gauge installed



i only hit 14 fpe roughly , 910 fps with premiers as i recall.
 the compression bumber under the piston robs more energy than the cocave piston face does. Make that solid with a stack of washers, efficiency goes up , If nothing else. The difficult part was tuning the trigger to still be usable while having enough cracking pressure on the valve.
« Last Edit: October 09, 2022, 09:07:11 PM by Rob M »
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Offline Bentong

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Re: Power Modifying Daisy 880 and Winchester 1977
« Reply #21 on: October 09, 2022, 10:13:53 PM »
OK sooo, even failed experiments serve a purpose of an example of what not to do.  I purchased a replacement piston assembly to try this on and I'm now glad I did so I didn't ruin the one that came with the gun.  My intent was to do the ole piston dimple fill with Alumiweld brazing rod but it seems the pot metal used for the piston has the same or lower melting point as the alumiweld rod.  So for anyone wanting to do the piston mod, stick to JB Weld.

I did find this:
https://www.muggyweld.com/product/super-alloy-1/?gclid=CjwKCAjw7eSZBhB8EiwA60kCW1jefRi9AP5qPEZdoKQ_j1Wa_bTmIoBKaa63qJb7m3u056DpMUyBiRoCZ54QAvD_BwE
With a melting point of 350 it might work but the cheapest I could find it was $60 which is as much or more than the gun, so its out.






Try here>>
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Offline pblawler

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Re: Power Modifying Daisy 880 and Winchester 1977
« Reply #22 on: November 10, 2022, 03:20:39 PM »
Upgrading 880 with 1977 valve seal and piston.


https://www.gatewaytoairguns.org/GTA/index.php?topic=203896.0
  • USA, AL,  Falkville
Daisy 880 (July 1976)
Daisy 880 (September 1983)
Daisy 880 (September 1987)
Daisy 822 (February 2002)
Daisy 822 (January 2003)
Winchester 1977 (2020-2021-2022)
Winchester 1922 (2022) 1977 with 922 barrel

Offline pblawler

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Re: Power Modifying Daisy 880 and Winchester 1977
« Reply #23 on: November 10, 2022, 03:21:45 PM »
  • USA, AL,  Falkville
Daisy 880 (July 1976)
Daisy 880 (September 1983)
Daisy 880 (September 1987)
Daisy 822 (February 2002)
Daisy 822 (January 2003)
Winchester 1977 (2020-2021-2022)
Winchester 1922 (2022) 1977 with 922 barrel

Offline pblawler

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  • USA, AL,  Falkville
Daisy 880 (July 1976)
Daisy 880 (September 1983)
Daisy 880 (September 1987)
Daisy 822 (February 2002)
Daisy 822 (January 2003)
Winchester 1977 (2020-2021-2022)
Winchester 1922 (2022) 1977 with 922 barrel

Offline pblawler

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Re: Power Modifying Daisy 880 and Winchester 1977
« Reply #25 on: November 10, 2022, 03:26:34 PM »
  • USA, AL,  Falkville
Daisy 880 (July 1976)
Daisy 880 (September 1983)
Daisy 880 (September 1987)
Daisy 822 (February 2002)
Daisy 822 (January 2003)
Winchester 1977 (2020-2021-2022)
Winchester 1922 (2022) 1977 with 922 barrel

Offline pblawler

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Re: Power Modifying Daisy 880 and Winchester 1977
« Reply #26 on: November 10, 2022, 03:28:41 PM »
880 1977 Front Sight replacement / upgrade

https://www.gatewaytoairguns.org/GTA/index.php?topic=200510.0
  • USA, AL,  Falkville
Daisy 880 (July 1976)
Daisy 880 (September 1983)
Daisy 880 (September 1987)
Daisy 822 (February 2002)
Daisy 822 (January 2003)
Winchester 1977 (2020-2021-2022)
Winchester 1922 (2022) 1977 with 922 barrel

Offline pblawler

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Re: Power Modifying Daisy 880 and Winchester 1977
« Reply #27 on: November 10, 2022, 03:32:17 PM »
  • USA, AL,  Falkville
Daisy 880 (July 1976)
Daisy 880 (September 1983)
Daisy 880 (September 1987)
Daisy 822 (February 2002)
Daisy 822 (January 2003)
Winchester 1977 (2020-2021-2022)
Winchester 1922 (2022) 1977 with 922 barrel

Offline pblawler

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  • USA, AL,  Falkville
Daisy 880 (July 1976)
Daisy 880 (September 1983)
Daisy 880 (September 1987)
Daisy 822 (February 2002)
Daisy 822 (January 2003)
Winchester 1977 (2020-2021-2022)
Winchester 1922 (2022) 1977 with 922 barrel

Offline pblawler

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Re: Power Modifying Daisy 880 and Winchester 1977
« Reply #29 on: November 24, 2022, 11:29:27 PM »
  • USA, AL,  Falkville
Daisy 880 (July 1976)
Daisy 880 (September 1983)
Daisy 880 (September 1987)
Daisy 822 (February 2002)
Daisy 822 (January 2003)
Winchester 1977 (2020-2021-2022)
Winchester 1922 (2022) 1977 with 922 barrel