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KJW 1911 Efficiency Boosting

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Old January 31st, 2016, 20:58   #1
NikolaiBorjeski
 
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KJW 1911 Efficiency Boosting

I've got a KJW 1911A1 that, like most other single stacks doesn't have great efficiency, I'd like to fix that. Currently it only gets about 12-15 good shots off with MAPP gas, and slightly less with propane, I've gotten more but it's not consistent. I know lighter parts are best but I'm not sure which ones to get, things like valves and spring rates are where I'm having trouble. What should be swapped and what can stay? Any help would be great.

Current list of parts I'm looking at:

http://www.vainnovation.ca/index.php...product_id=306

http://www.vainnovation.ca/index.php...product_id=346
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Old January 31st, 2016, 21:17   #2
leth1337
 
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CO2 mags
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Old January 31st, 2016, 21:30   #3
Styrak
 
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Well you wouldn't have very good luck with those gas route rubbers, as they're for the wrong gun.
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Old January 31st, 2016, 21:55   #4
Skeletor
 
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Just install a new piston head. Stock piston head sucks and lets too much gas past. I use a Dyna one. Just make sure you keep the thicker o-ring lubed or else the piston will eventually dislodge it and then you'll have to take it all apart to put it back in place.

New piston head will let you get 25-35 shots on a single gas charge depending on rate of fire and ambient temperature.
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Old January 31st, 2016, 22:29   #5
NikolaiBorjeski
 
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I'm trying to avaoid using CO2 mags since I know GG mags can get 20+ shots, CO2 is a pain and its costly. I guess I misread the page for the rubbers, thanks for catching that, any idea on correct upgrades there? Do you think the UAC part with the included piston head would be fine? Compared to your DYNA one?
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Old February 1st, 2016, 08:54   #6
Skeletor
 
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Literally any compatible aftermarket piston head should be better than the stock KJW one.
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Old February 1st, 2016, 11:38   #7
SuperCriollo
 
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Shim your routers, you don't need to replace them. My Nova kited custom 1911 went from 17 to 42 shots thanks to this mod.
https://m.youtube.com/watch?v=3rTqkv0AQeI
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Old February 1st, 2016, 16:46   #8
NikolaiBorjeski
 
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What did you use tom shim your routers? And how far up should they be shimmed?
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Old February 1st, 2016, 18:07   #9
Kungpow
 
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Quote:
Originally Posted by NikolaiBorjeski View Post
What did you use tom shim your routers? And how far up should they be shimmed?
https://www.youtube.com/watch?v=G4S2sspWmH4
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