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Old 11-29-2017, 08:35 PM   #1
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A&K AEG svd-s updrages

My vsr-10 is nearly done ( just need ML hop-up chamber ). So time to move next my wishlist gun. ( fan of Russia weapons )
Since I can't got Cyma version ( ), so take my chance with A&K SVD-S aeg version.

Wow, this gun is.... a lot of pot metal parts ( even fire selector and top cover ). Need extra careful when carry it.

the only parts I can sure not pot metal:
trigger guard ( steel )
outer barrel is aluminium.

THe dissamble: Pain in ass when you need take gearbox out . Have to remove outer barrel first, but simple. I will give the link to let it show:


From what I see, it use same front outer barrel like spring version. the Hop-up chamber seem better with wheel control.

Internals:
it's cloned from C.A version, so basiclly it have same cylinder like normal AEG ( use 3 gears with 15T piston ).
Have QD spring so more easier to open this.
have very long inner barrel ( 590mm ) a bit of challenge for normal cylinder.

Plan goal: 400 FPS with .32g bbs, have 200 ft effective ranges.

Plan list of upgrades:
+ Systemma Bore-up cylinder
+ Cyma piston with nylon piston head.
+ SHS/AF 18:1 CNC gearset.
+ hightorque motor ( Commander, SHS, Element, Cyma,...)
+ M130 power spring? or m140?
+ GATE pico ssr3 fet.
+ Basic work ( re-shim,
-Tru-hop bucking.
- PDI raven 6.01 and will re-mod the window to acept Tru-hop bucking.
Or others innerbarrel have 6.02mm ( need to save more air as possible for not undervolumed ).
- Use .32g bb white.
*Need to re-check what nub can use on stock hop-up chamber.

Plan to use side mount with small scopes ( PSO scope is just crappy with cheap version, real version........ I can't got )


Any advices will be acepts. I want to make it best as it can ( with low budgets ).

I will upgrades more pictures later.
__________________
JG BAR-10 G-spec:JJ trigger, PPS cylinder head,Ele m145, ML CJ inner 410mm. ML autobot 60*. ML hop-arm.

ASP SVU : m175 cutted, flat-hop, miracle inner barrel 469mm.
S&T M40A3: m145 element ( cut fews coil ) spring, steel spring guide, stock modifed piston, action army hop-up chamber, R-hop, hephaesthus 6.03mm 455mm.
WELL Mb-08: Stock for now.
SW M107A1: outer shortened.
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Old 12-07-2017, 11:10 AM   #2
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little update:
After thinking around, I decided to ordered PDI raven 690mm and cut it to 560mm to save some air volume.
try to reach 400 fps with .25g first.
the hightorque motor seem can't be delivery before 17, so I will try to push fps as max as motor can pull.

+ Try to find out how to mosfet this gun xD.
__________________
JG BAR-10 G-spec:JJ trigger, PPS cylinder head,Ele m145, ML CJ inner 410mm. ML autobot 60*. ML hop-arm.

ASP SVU : m175 cutted, flat-hop, miracle inner barrel 469mm.
S&T M40A3: m145 element ( cut fews coil ) spring, steel spring guide, stock modifed piston, action army hop-up chamber, R-hop, hephaesthus 6.03mm 455mm.
WELL Mb-08: Stock for now.
SW M107A1: outer shortened.
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Old 12-26-2017, 02:49 PM   #3
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Did you already order everything else? I used a basic fet in my SVD and it worked perfectly fine.
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If you have questions about the King Arms SVD AEG (Or general questions about all SVDs) feel free to PM me and ask. I also have a thread about it:
https://www.airsoftsniperforum.com/43...gunov-aeg.html
Please make sure you read the whole thread - there are corrections throughout it!

Primaries:
King Arms SVD AEG (Polymer)
King Arms VSS Vintorez
Well L96
Secondary:
KWA TT-33
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Old 01-04-2018, 02:35 AM   #4
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Quote:
Originally Posted by philbegas View Post
Did you already order everything else? I used a basic fet in my SVD and it worked perfectly fine.
I plan to use gate pico aab to minimum fps deviation . It still depend on my budgets. If it tight, I will use basic fet for sure, pico ssr3 is best guy for me.

SOme update until 4/1/2018:

I use CYMA high torque motor to replace my stock ( maybe the previous owner swapped it ). with adjuster screw plate, the motor too high for gears. I have to take it out to lower the motor height. Not perfect position but will do fine.

- Next issued is motor can twisted and out of position when I test by hand. roll the motor with a lot of duct tape. Work fine .

- After re-shim stock gears, replace piston with CYMA full steel teeth. I will use the nylon piston head for more silent.

- Next is bore-up cylinder, I hit the problem. The bore-up cylinder is little longer than stock cylinder. I will bring it to my friend to cut it down.

- Since the nozzle aftermarket don't exist ( or I can find to buy one ), I decided to cut down to same length, outer diameter with m4 nozzle cnc. But I forgot to expand inner diamter. So it doesn't fit . Will have to bring it back to my friend to fix it.

- Bore-up cylinder had little bigger inner diameter, so stock O-ring piston can't hold air. Even I take the O-ring in bore-up kit , it still can't hold air 100%. heat it + silicone it, now it perfect.


SVD-S basicly too long for normal cylinder, even it have 590mm inner barrel, it still too long. I decided to cut my PDI raven 650 down to 560mm inner barrel, it will save me some air to push bb better.

Hop-up chamber on A&K is priority and little bad, why? Because:
+ It have basic same design like GHK AK ( have rotary ring directly push the little nub. incline. And the hole for nub is tiny, can't use any better nub ( except you have to extend that holes ). I checked around websites and store, I don't see any website sell replacement hop-up for this models. the hop-up chamber use bucking short version ( like CYMA 041/041J models). So I will modify the maple leaf a bit to fit it.

+ the spring guide is bearing steel, so it don't need to be replaced, lube it and good to go.


that all for now
__________________
JG BAR-10 G-spec:JJ trigger, PPS cylinder head,Ele m145, ML CJ inner 410mm. ML autobot 60*. ML hop-arm.

ASP SVU : m175 cutted, flat-hop, miracle inner barrel 469mm.
S&T M40A3: m145 element ( cut fews coil ) spring, steel spring guide, stock modifed piston, action army hop-up chamber, R-hop, hephaesthus 6.03mm 455mm.
WELL Mb-08: Stock for now.
SW M107A1: outer shortened.
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Old 01-16-2018, 08:16 AM   #5
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First use in off games. Setup:
- Element M175 cut 4 coils.
- Cyma Piston .
- aluminium piston head from E&C gun.
- GP500 super high torque motor.
- Bore-up cylinder.
- PDI raven inner barrel 6.01mm
- Maple leaf monster 70*
- Changed to Dean connector.
* Everything else is stock.

+ The gun reach 470 fps with .32 and 2.85 joules. deviation is +/- 4. airseal is 99% ( stock nozzle don't have o-ring ).

Time is limited so I can't measure ranges exactly. BUt from what I use in battle, it have good range about 200-230 feet. At the end of line the bb little fly up and drop to the ground.

The china scope SVD is bad, it canted to the right about 10*, and it too low.

Next plan is install basic mosfet ( pico ssr3 ). R-hop inner PDI, and change to use Nato scope for better use. PSO-1 scope will only for photo.

The gun work make me pretty happy. Only need more tweak and it can beat much gun on my field.
__________________
JG BAR-10 G-spec:JJ trigger, PPS cylinder head,Ele m145, ML CJ inner 410mm. ML autobot 60*. ML hop-arm.

ASP SVU : m175 cutted, flat-hop, miracle inner barrel 469mm.
S&T M40A3: m145 element ( cut fews coil ) spring, steel spring guide, stock modifed piston, action army hop-up chamber, R-hop, hephaesthus 6.03mm 455mm.
WELL Mb-08: Stock for now.
SW M107A1: outer shortened.
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Old 02-01-2018, 11:09 AM   #6
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Update 1/2/2018:

+ pico ssr3 arrived.
+ done cnc nozzle mod.
+ cut the power spring little 1/2 coils.

Plans:
+ Since I see the joules little lower than it should be ~~~> under volumed. I will cut 10mm inner barrel more to save little more air.
+ Mod the hole for nub for use regular aeg nub ( flat nub + r-hop ).
+ Find the way to lower motor height more. It sound make me scare.
__________________
JG BAR-10 G-spec:JJ trigger, PPS cylinder head,Ele m145, ML CJ inner 410mm. ML autobot 60*. ML hop-arm.

ASP SVU : m175 cutted, flat-hop, miracle inner barrel 469mm.
S&T M40A3: m145 element ( cut fews coil ) spring, steel spring guide, stock modifed piston, action army hop-up chamber, R-hop, hephaesthus 6.03mm 455mm.
WELL Mb-08: Stock for now.
SW M107A1: outer shortened.
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Old 03-06-2018, 09:28 AM   #7
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6/3/2018:
+ Done cutting down inner barrel and outer barrel about 4.33 inch. Now i'm using 500mm inner barrel ( raven ).
+ Combine with ML 70* monster. it shoot 422 +/- 4 with .32g and 2.7 Joules. hop-up turn on.
+ installed pico ssr3 gate mosfet. No more fear dead priority contact switch.

Wait for PDI R-hop patch to get more consitant grouping or more range.

That's all for now.
__________________
JG BAR-10 G-spec:JJ trigger, PPS cylinder head,Ele m145, ML CJ inner 410mm. ML autobot 60*. ML hop-arm.

ASP SVU : m175 cutted, flat-hop, miracle inner barrel 469mm.
S&T M40A3: m145 element ( cut fews coil ) spring, steel spring guide, stock modifed piston, action army hop-up chamber, R-hop, hephaesthus 6.03mm 455mm.
WELL Mb-08: Stock for now.
SW M107A1: outer shortened.
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Old 07-10-2018, 11:22 PM   #8
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Posts: 588
Forgot to updates. xD


01/07/2018
After 2 days off games testing. The gun shoot very great. First day I thought my hop-up not working good. But at other field have more long and clear view. It just my scope not zeroed properly. It shoot very nice with .32, I know my gun still undervolumed. I will wait .3g to compare.


- The inner barrel not sitting tight with outer. Will open to make some teflon tape it to have tighter grouping.
- The PDI patch replacment still not sitting good on PDI Raven 6.01. So i let it for another project. :(
- THe magazine not sit tight to hop-up hole. I have to added little piece of plastic to keep the magazine tight sit. now no more misfed.


Summary:
+ Shooting 422 fps with .32g ( 2.7J ).
+ PDI Raven inner barrel 500mm ( cutted from 650mm ) 6.01mm.
+ Maple leaf monster 70* ( cutted to make shorter bucking ) with aluminium nub machinned ( 3mm diameter ).
+ stock chamber with enlarged the nub hole.
+ Cutted outer barrel 100mm shorter.

+ Commander GP500 super hightorque motor.
+ Element M175 cutted to 135mm length.

+ Systemma Bore-up cylinder.
+ custom cnc nozzle with O-ring.
+ Gate picossr3.
+ Cyma piston with E&C aluminium piston head.

Rest are stock.
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JG BAR-10 G-spec:JJ trigger, PPS cylinder head,Ele m145, ML CJ inner 410mm. ML autobot 60*. ML hop-arm.

ASP SVU : m175 cutted, flat-hop, miracle inner barrel 469mm.
S&T M40A3: m145 element ( cut fews coil ) spring, steel spring guide, stock modifed piston, action army hop-up chamber, R-hop, hephaesthus 6.03mm 455mm.
WELL Mb-08: Stock for now.
SW M107A1: outer shortened.
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