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+23
DEATHGUYJ
camo1010
WH1PLA5H
Syridian
cinlia01
Echoes
238232
redcricket077
bbqbeefburgerman
Servulus
revo
-Aj-
lefty
jacko1120
gooni
matt.chopper
longstrikeguy
Joey
Winterstrike
oxymoron
littlebro05
Reconzor
TheBradl3s
27 posters

    Stampede eh?

    TheBradl3s
    TheBradl3s
    Moderator
    Moderator


    Posts : 512
    Join date : 2010-06-28
    Age : 25
    Location : The Awesome Adelaide!!!!!!! Rank: Goblin Welder

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  TheBradl3s Thu Jan 13, 2011 10:53 am

    Just a small update, I did a few calculations and worked out this thing, with my 2.3aH 12v Battery shoots 4.5 Darts per sec!
    S yeah...

    BAM!

    - Brad
    revo
    revo


    Posts : 72
    Join date : 2010-12-31
    Age : 26
    Location : Gold Coast

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  revo Thu Jan 13, 2011 1:22 pm

    If I was you Brad, I would change from Tamyia's to Deans, Also upgrade to a thicker wire, It will get more voltage through.
    TheBradl3s
    TheBradl3s
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    Moderator


    Posts : 512
    Join date : 2010-06-28
    Age : 25
    Location : The Awesome Adelaide!!!!!!! Rank: Goblin Welder

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  TheBradl3s Fri Jan 14, 2011 12:45 am

    I didn't use Tamyita's Paint, I used Vinyl Dye Got it from super cheap auto for $18 for 2 cans. Because they are Satin Colours, they are not shiny and are Flat.
    They even dry in wet weather!
    Here's a pic of them:

    Stampede eh? - Page 2 Img2690v


    Also, there isn't much point in using thicker wire, because the stampede internals don't have very thick wire, so I used the same gauge. Anyway, you cant let more Voltage though, I believe that says the same, you let more current through. The current is variable (by which it can change) and the voltage is invariable.

    If I'm wrong, correct me, but I don't think I am

    - Brad
    238232
    238232


    Posts : 203
    Join date : 2010-12-17
    Age : 33
    Location : Sydney

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  238232 Fri Jan 14, 2011 1:39 am

    Very nice mod, how much does handling improve by removing the diagonal bit from the bottom of the handle to the battery compartment? I've found that it gets in the way a bit, but haven't found the time to remove it yet.

    On the electrical issue, you're indeed correct that there isn't much point to using thicker wire, but the motor will indeed see a higher voltage. Let's take an example, since I measured the current draw on a stock Stampede yesterday.

    Under load, the nominal 9V of a fresh set of cheapo D cells dropped to ~7V, and the current draw hovered around 2A, so V=IR gives a system resistance of ~3.5 ohms.

    Let's assume that the wire resistance was 0.5 ohms, while the motor accounted for the other 3 (in actual fact the wires would account for a lot less than that). Therefore, out of that 7V there will be a 6 volt drop across the motor and 1V across the wires. Side note: P=I^2R says that if the wires did actually account for 0.5 ohms of that resistance it'd be dissipating 2W as heat...

    If we use thicker wire and halve the resistance, the system resistance would be down to 3.25 ohms. Of that 7V, we'd now get ~0.54V across the wires and 6.46V across the motor. The voltage across the battery will stay the same, but the motor will see a higher voltage. Note that the lower resistance will also increase the current drawn to around 2.15A.

    Practically though, given that wire resistance is much lower, if you used a thicker wire the corresponding increase in voltage will be much lower, so I expect that the effect will be minimal.

    Note that this is a simplified explanation since I don't want to clutter it too much.

    Anyhow, back on track, great mod for the Stampede. Any plans to do another and dual wield?
    Echoes
    Echoes


    Posts : 433
    Join date : 2010-11-04
    Age : 31
    Location : Bass Hill, Sydney, NSW

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  Echoes Fri Jan 14, 2011 1:55 am

    238232 wrote:Anyhow, back on track, great mod for the Stampede. Any plans to do another and dual wield?

    He did buy four stampedes... QUADRUPLE WIELD ANYONE?

    I showed this to a couple of mates and they went off! If you try hard enough it kinda looks like an uzi. That's what they said anyway. I liked the idea you had for the ice cream lid. That was some good thinking
    gooni
    gooni


    Posts : 385
    Join date : 2010-07-17
    Age : 44
    Location : Adelaide 5039.SA.AU.... Rank: Ghetto King

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  gooni Fri Jan 14, 2011 12:47 pm

    Brad, is there an orange and yellow dye that is close to the nerf colours?
    TheBradl3s
    TheBradl3s
    Moderator
    Moderator


    Posts : 512
    Join date : 2010-06-28
    Age : 25
    Location : The Awesome Adelaide!!!!!!! Rank: Goblin Welder

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  TheBradl3s Sat Jan 15, 2011 1:38 am

    gooni wrote:Brad, is there an orange and yellow dye that is close to the nerf colours?

    Well, I know chad did manage to get some yellow dye, but he said its pretty hard to find and orange, near impossible.

    It depends on where you look I suppose.

    - Brad
    lefty
    lefty


    Posts : 153
    Join date : 2010-12-26
    Age : 46
    Location : Brisbane

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  lefty Sat Jan 15, 2011 2:47 am

    Once you under coat with a plastic/vinyl paint you can paint over this with an other paint with good results.
    At least thats my experience so far.
    cinlia01
    cinlia01


    Posts : 4
    Join date : 2010-07-17
    Age : 26
    Location : adelaide

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  cinlia01 Fri Jan 21, 2011 2:59 pm

    -Aj- wrote:Lol I'm not a teacher but yeah, small world! Eh, could work out good, some kind of st peters nerf legue haha they certainly have a magnificent place to war in

    Aj
    Don't forget cinlia01 over here, I go to saints aswell. Nice mod brad, just an idea for the future, how about making a slide in battery casing on the lower part of the rear of the blaster for easy acsess and stuff.

    And Aj if u could get a saints nerf legue the junior school main building would be so sick.
    revo
    revo


    Posts : 72
    Join date : 2010-12-31
    Age : 26
    Location : Gold Coast

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  revo Sat Jan 22, 2011 12:23 am

    My Batterie, is the same size but I put it in my gun.
    Syridian
    Syridian


    Posts : 8
    Join date : 2012-01-02
    Age : 48
    Location : Gunning, NSW

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  Syridian Thu Jan 05, 2012 8:57 pm

    I know this is an old thread but it's still quite awesome, so I'm going to respond anyway.

    Personally I too don't think the wire size increase is worth doing as the ROF won't really increase by that much. The internals certainly don't warrant spending the time needed to replace the cabling for such a small efficiency gain. there are much better area's to gain efficiency and performance from that would need to be looked at first.

    I do agree that mounting the battery on the gun would look much better, but it would also decrease the perceived "Recoil", as you would be adding mass to the gun to act as a damper.

    I'm looking forward to finishing my Stampede mods so that I too can share. Though I do like the rifle look even though I really do want a fully auto pistol.
    WH1PLA5H
    WH1PLA5H


    Posts : 110
    Join date : 2012-03-26
    Age : 37
    Location : Adelaide Hills

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  WH1PLA5H Wed Mar 28, 2012 1:06 pm

    Just brought another stampede just so I can do a SMG style mod, just like this! awesome inspiration - THANKS!

    Already added my 14.8v Lipo, removed AR, all safety's (left main on / off switch), re sealed plunger. Waiting for my OMW springs and kits to arrive. Already put 2 clips through it in its current form to test, NO over runs at all - WOW. Unlike my other one. Wonder what i did wrong with that one. Time to pull it apart and find out.

    Anyway, thanks for the inspiration.
    camo1010
    camo1010


    Posts : 443
    Join date : 2011-08-09
    Age : 34
    Location : Toowoomba QLD, Australia, Earth, Milky way....

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  camo1010 Wed Mar 28, 2012 1:23 pm

    Can't wait to see how it goes
    WH1PLA5H
    WH1PLA5H


    Posts : 110
    Join date : 2012-03-26
    Age : 37
    Location : Adelaide Hills

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  WH1PLA5H Wed Mar 28, 2012 2:04 pm

    camo1010 wrote:Can't wait to see how it goes

    Cut down most of the external shell and barrel section. I am leaving a bit more intact around the rear of the handle and a tad bit more of the muzzle section and the top handle (need some where for the bandolier strap!). Going to try to get the stock battery end plate to go back on the shortened butt stock if possible - that might take some thinking!
    DEATHGUYJ
    DEATHGUYJ


    Posts : 18
    Join date : 2012-03-03
    Age : 33
    Location : lyndoch s.a.

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  DEATHGUYJ Wed Mar 28, 2012 4:58 pm

    im currently building an smg stampede and was wondering where i can buy the 50 ft spring your using ill be using 4 4.2 volt trustfires from dealextreme i just need a good spring
    |Shadow|
    |Shadow|


    Posts : 190
    Join date : 2011-09-08
    Age : 45
    Location : Bundaberg, Queensland

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  |Shadow| Wed Mar 28, 2012 5:48 pm

    WH1PLA5H wrote:
    camo1010 wrote:Can't wait to see how it goes

    Cut down most of the external shell and barrel section. I am leaving a bit more intact around the rear of the handle and a tad bit more of the muzzle section and the top handle (need some where for the bandolier strap!). Going to try to get the stock battery end plate to go back on the shortened butt stock if possible - that might take some thinking!

    If you are looking for more of a SMG look check out SGNerfs SMG mod ...

    http://modworks.blogspot.com.au/2011/06/nerf-stampede-smg-conversion.html
    WH1PLA5H
    WH1PLA5H


    Posts : 110
    Join date : 2012-03-26
    Age : 37
    Location : Adelaide Hills

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  WH1PLA5H Thu Mar 29, 2012 4:31 am

    thanks, i have seen that one. I like it, but dont want the rear stock, wanting it a bit shorter then that. Just about to finish chopping the front end off and then work on piecing it back together with the extra bits and hide some of the cuts and holes.

    Cheers.
    DA KING
    DA KING


    Posts : 10
    Join date : 2011-08-08
    Age : 23
    Location : Melbourne, Australia

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  DA KING Fri Jun 01, 2012 12:58 am

    Does adding the extra voltage reck the motor?
    Jeo
    Jeo


    Posts : 462
    Join date : 2011-01-27
    Age : 34
    Location : Canberra

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  Jeo Fri Jun 01, 2012 1:53 am

    Can do.

    Any modification you do will shorten the life of the blaster. Whether it's by a meaningful amount is up to the modification in question.

    I've got a few running at 16v and haven't seen any motor problems yet.
    LostBoy
    LostBoy


    Posts : 546
    Join date : 2010-06-28
    Age : 23
    Location : Melbourne. Victoria

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  LostBoy Fri Jun 01, 2012 2:46 pm

    My Stampede, ha. It has it's jamming problems. Everytime I use it .___.
    WH1PLA5H
    WH1PLA5H


    Posts : 110
    Join date : 2012-03-26
    Age : 37
    Location : Adelaide Hills

    Stampede eh? - Page 2 Empty Re: Stampede eh?

    Post  WH1PLA5H Sun Jun 03, 2012 9:18 am

    Here is a update for my minimized stampede. Its not quiet the same level as the OP however its still smaller then stock and powerful to boot.

    14.8v 2200mAh Lipo
    11-12kilo "Serv" Spring
    AR Removed
    Safetys Removed
    Blue LEDs in Gun End and Clear Chamber (Wired to safety)
    Shell Minimized as you can see
    Added 2x D brackets for Gun Strap to attatch
    Red Dot Aimpoint
    Laser (pressure switch activated)
    LED Tac' Torch
    Rayven Muzzle

    Stampede eh? - Page 2 2012-05-27150433
    Stampede eh? - Page 2 2012-05-27150442
    Stampede eh? - Page 2 2012-05-27150457

    This thing is a beast when used with "heavies" or Hot glue tipped filled steamlines. Fires accurately, despite the short barrel, and fast. Empties a 18 clip in about 5 - 6 seconds but is best used in small bursts.

    Thinking about making a smaller version with slightly less power like the OP or the others floating around but this suites my indoors CQC battles and even out door battles no worries.
    Jeo
    Jeo


    Posts : 462
    Join date : 2011-01-27
    Age : 34
    Location : Canberra

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    Post  Jeo Sun Jun 03, 2012 9:42 am

    Well if we're posting pics of Stampedes, here's my ghetto fabulous incarnation.

    Stampede eh? - Page 2 DSCN2978

    BT kit, 16v, safeties removed, replacement microswitch. Check my Foam Dart Goodness post for more details.
    WH1PLA5H
    WH1PLA5H


    Posts : 110
    Join date : 2012-03-26
    Age : 37
    Location : Adelaide Hills

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    Post  WH1PLA5H Sun Jun 03, 2012 10:45 am

    nice, thats about what i was thinking of building up. small and deadly Whats the BT kit tho?
    Jeo
    Jeo


    Posts : 462
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    Post  Jeo Sun Jun 03, 2012 12:24 pm


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