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Wednesday, October 27, 2010

Nerf Alpha Trooper - Internals Guide!

This guide will serve as a reference for the internals of the Nerf Alpha Trooper CS-18.

For a detailed review of the Nerf Alpha Trooper, click Here.

Nerf Alpha Trooper CS-18 - Internals Comparison with Nerf Raider
(Top: Raider / Bottom: Alpha Trooper)





Nerf Alpha Trooper CS-18 - Internals Comparison (Close-Up)
(Top: Raider / Bottom: Alpha Trooper)





Nerf Alpha Trooper CS-18 - Plunger & Spring Comparison with Nerf Raider
(Top: Raider / Bottom: Alpha trooper)


56 comments:

  1. Hi venerable SG,
    Mechanisms seem to be quite the same. Does a spring feel stronger ?

    ReplyDelete
  2. So which blaster do you think the Alpha Trooper is more similar to out of the Recon and the Raider in terms of internals? Would either of the other two plungers work with the Alpha Trooper?

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  3. tristanconvert,

    Both stock springs seem to be the same dimensions, can't spot much of a difference in spring load either.

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  4. malee_necromancer,

    The Alpha Trooper's internals are more similar to the Raider.

    All 3 blaster plungers may have similar dimensions but they have different fitment designs to fit their respective blaster casings so they can't be simply swapped around, unless additional modifications are done on them or the blaster parts/casings.

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  5. hey sg did you know a longstrike plunger will work perfectly in the trooper.i got glue in my trooper plunger trying to get a foam pad on the bottem.all i need to do was cut the back part of the stock thing so it was open.but the one bad thing was one lock that kept it from cocking again after you've all ready cocked it

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  6. dasnerfer,

    Well, the Longstrike and Alpha Trooper plungers may look similar but they have different fitment part designs, so if you want to swap plungers, you'll have to modify the plungers or casing to get proper parts fit in either blaster.

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  7. no mot really except for the back of the plunger caseing needed to have the back trimmed off.and i have one wierd question,when i opened up both my recon and longstrike, the o-ring that seals the air chamber grew to like 2 times its original size when i pulled them apart do you know why this happened or how i can fix it because now i have a non-functioning longstrike.thank you

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  8. dasnerfer,

    If your blaster's o-rings expanded larger or got out-of-shape, then it probably means the wrong lube was applied to the o-rings.

    Rubber o-rings should only be lubed with grease which are safe for rubber compounds.

    I guess you'll have to find replacement o-rings from the hardware stores.

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  9. Do you happen to have a better pic of the front end, specifically the metal rod end for the slam fire action? Thinking about a mod.

    As an aside, the barrel seems to be a bit smaller than usual. Better air passage, maybe? But won't account by itself for the greater power, seems like they tweaked something else.

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  10. Lynx7725,

    You can click on the photo and it'll link to a larger version.

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  11. SG Nerf,

    I've noticed there are holes in the barrel. Does it help increase velocity of the dart?

    Thanks.

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  12. I would note that one significant difference in the alpha trooper is the dart door mechanism, some people report that the sliding dart door in the other clip blasters can sometimes cause darts to bend and even fold when the pump is moved forward aggressively, the swinging dart door in the alpha trooper is designed to fix this thus many people report that the alpha trooper is more reliable for slam fire

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  13. Have you found a decent way to pad the plunger yet? It seems that the Alpha Trooper has to be aligned perfectly in order to work. The only thing that I could think to do would be to dremel off part of the bolt that goes into the plunger and pad what's left.

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  14. niwde,

    Nope, the holes you see at the barrel area are on a seperate plastic cover, they are there just for design.

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  15. iknowmy3tables,

    Yes, the Nerf Alpha Trooper's swinging dart blocker paddle (versus the older pop-up dart blocker plate) is a design improvement that helps to reduce the chances of jamming.

    The Nerf Stampede also uses the same swinging dart blocker paddle design too. :)

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  16. Greg,

    Just put a 20mm diameter padding into the base of the plunger, same as with all the other reverse plunger blasters.

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  17. I've tried that, but any padding that I can find in my area seems to be too thick. The plunger does not return completely, and therefore the one lock impedes the bolt sled when I try to cock the blaster.

    ReplyDelete
  18. Didn't see the reply to my qn earlier... thanks. Was using Chrome, not used to it yet.

    WRT the the Alpha Trooper, I popped mine open a few days ago due to a bad jam. The bottom line is this: for those of you thinking of modding the Trooper, be aware that the steel push rod of the slamfire needs to travel in very limited (and very small margin of error!) path.

    Going outside of this path can lead to very bad jams of the slamfire mechanism just above the trigger, which means you have to open up everything to reset the mechanism. This can happen just by removing the front pump cover and activating the rod manually/ directly -- I did this and the slamfire mechanism just jumped the track and jammed. Don't know if this is unique to the trooper or the raider also suffers from this.

    Otherwise the alpha trooper is an excellent and reliable gun. Give it a stock and it goes from good to annoyingly fun. Not much to mod, since the spring/ barrel system is already quite powerful.

    ReplyDelete
  19. Greg,

    If the padding you use seems to be too thick, then just trim it thinner to fit properly... or simply remove the bolt lock.

    ReplyDelete
  20. Is the spring in the Alpha Trooper the same size as the Recon spring? I was wondering if I would be able to use the same replacement.

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  21. Nemesis1013,

    Yes, they are around the same size.

    ReplyDelete
  22. when i first got my alpha trooper, the plunger was very slow moving.. i found the reason for this is that the alpha trooper is equiped with a thicker o-ring which made the plunger slower in slam fire and sometimes regular fire the plunger would not move forward enough quick enough and would sometimes get stuck not allowing the lock that locks the cocking handle to move again once it was already cocked to disengage thus not allowing you to cock it again. the only way to remove this problem is to remove either the lock or the air restrictor allowing the air to flow faster. i hope this helped for all of you with this problem and DO NOT THINK THAT YOUR GUN IS JAMMED.

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  23. hey, i need help with my alpha trooper. i'm very new to nerf guns and i tried my had at modding it yesterday. i removed the air restrictors and everything, but now i can't even get it to work again. can anyone help me?

    ReplyDelete
  24. woong,

    Open up the casing again and check that all the parts and small springs are positioned properly and securely. Keep adjusting and testing, it'll eventually work.

    ReplyDelete
  25. Thanks for the advice. I have been trying for almost 24 hours now, but it still doesn't work. Do you know of any shops in singapore that specialises in modding of nerf guns?

    ReplyDelete
  26. woong,

    You can check at the NerfSG forum, some of the modders there might be able to help you on it.

    ReplyDelete
  27. hey thanks man, i got it working again, turned out that i put too much tape under the o ring, wanting to create more air pressure. i removed the tape underneath it and it's working better than ever now. Thanks man!

    It's Nerf or nothing!

    ReplyDelete
  28. Hey man. Wanna ask you something. I bought 2 ATs one of them has a really long trigger pull after playing with it a few times. I opened the casing,but could not find anything wrong with it. Sometimes the plunger wont even spring forward. i'll have to push the priming handle all the way forward, and hold it there with my hands only it will fire at the normal/correct trigger pull, which is somehwere in the middle.

    ReplyDelete
  29. Taggy,

    Nerf blasters tend to have manufacturing variations between individual units so i guess you just got an odd or faulty one.

    Just exchange it at the store for a new properly working unit.

    ReplyDelete
  30. I think its too late. *facepalm* anyways, i'll try fixing it with some epoxy to make the trigger thicker. Or the shorter trigger pull mod.

    ReplyDelete
  31. I think it's because of the Slam-fire which only fires when the pump is all the way forward. Mine does the same.

    ReplyDelete
  32. Have you noticed the AR's are different from other reverse plunger guns? It seems they can be removed buy sticking a flat blade screw driver down the back of the plunger tube to snap the three support arms just like the Longshot. Is this a viable option?

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  33. DRaKe6900,

    Yes, that AR removal method will work too.

    ReplyDelete
  34. Ben Camilleri,

    Not sure which blasters you are comparing it to, but in stock condition, the current clip-fed N-Strike blasters all have around similiar range (+/- a few ft). Any differences in range are usually due to manufacturing variations within individual units, so it also depends abit on luck. :)

    ReplyDelete
  35. Could you make a mod guide for the alpha trooper please?

    ReplyDelete
  36. jkfvidfsdfsf,

    Just follow my Recon or Raider Mod Guides:

    http://modworks.blogspot.com/2009/10/nerf-recon-mod-guide.html

    http://modworks.blogspot.com/2009/09/nerf-raider-mod-guide.html

    The modding process is pretty much the same for all of these reverse plunger blasters, that's why i didn't do up individual guides for the rest of the other models, 'cos it'll just be repeating the same steps. :)

    ReplyDelete
  37. hi sg,
    i want to mod my Alpha trooper by putting a tactical rail on the pump handle so then i can put accesories + stampede bipod on it.
    can't find any mod guides on the internet can u halp me plz

    ReplyDelete
  38. Samza,

    Just cut or remove a tactical rail from another blaster, then glue or screw it to the Alpha Trooper pump grip... no need to have to refer to a guide for such a simple mod.

    ReplyDelete
  39. do you know if you can get tactical rails off ebay cos I don't really want to by a gun then stuff it up by cutting of the tactical rail the rong way.
    would you be able to recomend a blaster to cut off the tactical rail from.

    also I am new to modding so I like to have a guide to help me. when i'm finished I will post it on my blog www.ausnerfblasters.blogspot.com.au
    pp.s sorry i rote so much

    ReplyDelete
  40. Samza,

    Well, tactical rails are part of blasters and people don't usually sell them seperately. Just find a blaster you don't use then cut out its tactical rail.

    Honestly, you have to be prepared to break things during modding... or else don't mod. :)

    ReplyDelete
  41. Samza,

    The vulcan tends to have a large amount of tac rails, they can be removed as a unit. I would send them out, but I live in the u.s. I only use this site because the things here are superior to the typical u.s. site and the people know what they are doing.

    ReplyDelete
  42. I finished my mod its great, you can check it out at www.AUSnerfblasters.blogspot.com.au

    but now I have another problem, my alpha troopers pump handle is very sticky, well sorta hard to explain but it doesnt run smoothly, I think that I may have bent the rod when I took it apart. does anybody know what is wrong and how to fix it.

    ReplyDelete
  43. Samza,

    The pump handle getting stuck tends to be a common issue with Alpha Troopers.

    What most modders do is simply remove the bolt lock parts and that seems to solve it. :)

    ReplyDelete
  44. What does the bolt lock look like, Where is it located and what does it do

    ReplyDelete
  45. Samza,

    The bolt lock is a common mechanism in all the clip-fed N-strike blasters that prevents the bolt from being pulled backwards again after it has been primed and chambered a foam dart.

    The bolt lock parts are usually positioned near the trigger area, just look at how the system works and you'll spot the parts.

    ReplyDelete
  46. Thanks SG hope I can find it

    ReplyDelete
  47. hi sg I took out the bolt lock ( I think) and now it runs alot smoother. however it still locks up at the front and yes I took out the whole bolt lock not just the bits inside. but my main problem is that the range has decreased emensly like, it shoots 2 meters max. I only reach max range when I tilt it up a fair bit. can you plz help.

    ReplyDelete
  48. Samza,

    Sounds like there are other parts in your blaster that have somehow gotten mis-aligned or not working properly.

    You'll just have to check and re-check everything again, it could due to one (or more) of dozens of different other faults.

    ReplyDelete
  49. I recently modded my AT with the Orange Modworks Stage 1 kit, removal of AR, air hole seal, greased internals. It shoots about 40 feet if I'm lucky. And this is with modded streamline darts (glued straw inside and hotglue filled tips), because my stock darts would WILDLY veer off to the side randomly.

    The darts seem to veer off at about 30 feet and make a decline in range afterwards, resulting in 40 foot ranges.

    People have claimed 50-70 ft. ranges. Is this exaggeration or should my AT really be firing at those ranges after my mods?

    ReplyDelete
  50. Eric C.

    Streamline foam darts are naturally unbalanced, even if you try to add tip weights or install straws and such, they will still be inaccurate and inconsistent.

    You can't just add weight and expect it to perform better, for lower powered modded blasters (ie. reverse plunger models like the Recon, Longstrike, Alpha Trooper) you actually have to reduce the tip weight... if the tip weight is too heavy and unbalanced, it also negatively affects the range and accuracy.

    To achieve better accuracy and consistency, you need to use better foam and custom calibrate the tip weights properly.

    You can see some foam dart calibration examples that i posted here:

    http://modworks.blogspot.com/2010/08/custom-calibrated-foam-darts-conversion.html

    http://modworks.blogspot.com/2010/10/custom-weighted-foam-dart-tip-seal.html

    Btw, the 50-70ft claimed ranges by modders who installed OMW Stage 1 kits usually tend to be estimated figures at various angled ranges or ranges of individual shots which happen to fly further (or often just plain guesswork without even using proper measuring tapes)... thats why there is such a wide variation in claimed ranges. :)

    ReplyDelete
  51. Hey SG Nerf,

    Thanks for the quick and informative response! You're the best!

    Btw, I just ordered some SDF brand darts and plan to modify them. Got my fingers crossed on the results! :D

    ReplyDelete
  52. Ok so I tested different weighted sdf darts. The 5 cm cut eraser weight looked to fly the farthest. I went ahead and made more 5 cm cut sdf darts and with all my mods, I'm still only achieving 30 feet max. I think I'm just going to give up and switch to clip mod my barricade! XD

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  53. Eric C.

    I think you meant 5mm and "SDL" foam darts? :)

    Anyways, do check that the foam darts have a good seal in the bolts or barrels of your blasters... and make sure your modded blasters are working properly too.

    ReplyDelete
  54. Hi sg nerf,

    What's the name of the piece adjacent to the jam door lock? It's held in by a screw and post, slides in place and has a weak spring. Think it may be called the slam fire lock but I'm not 100% sure. Anyway the screw and post holding mine in snapped off, is it critical to performance or can I remove it? I've successfully ran the gun without the screw and post and the part still in there. Just wondering whether you can help. Thanks!

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    Replies
    1. Eric. L,

      That could be the bolt lock for the blaster (sorry i can't check to confirm 'cos i've already traded away all my Alpha Trooper units). Anyways, i guess if it can still work well without that part then it should be fine.

      Delete