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    Springs!!!

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    makeitgo

    Posts : 161
    Join date : 2011-04-04
    Location : Ottawa, Ontario, Canada

    Springs!!!

    Post  makeitgo on Tue Jun 07, 2011 4:09 pm

    I've been asked many times what springs I use and where I get them. I don't get them from McMaster Carr because I'm lucky enough to have access to local stores that have decent springs.

    These are the main springs I use:



    From left to right:

    C-874 Century Spring Corp. AKA, the 'MAN' spring.
    WWW.centuryspring.com
    1-3/8 x 6 x .120 (inches)
    34.925 x 152.4 x 3.048 (millimeters)


    6 in. (free length) - 1.68 in. (solid length) = 4.32 in. (maximum length change)
    4.32 in. * 13 lb./in. (force needed to move 1 in.) = 56.16 lb. (force needed for total compression)

    Obviously, the force required to make a total compression is more than the suggested safe maximum load.

    I used to get this from http://www.ottawafastenersupply.com for $8.44 a piece but now order them from here:
    http://www.hardwareandtools.com/Century-Sp...ng-u682484.html. A much better deal.

    So far I've only tried this in my Octshot but I'm going to see if it will work in my newly acquired RFSG.



    The next 3 are from www.campisprings.com

    812, 810 and 047 respectively references

    812 - Length = 10", OD = 0.875", ID = 0.679", rate = 13lbs/in, max load = 130lbs.

    810 - Length = 6", OD = 0.938", ID = 0.778", rate = 6lbs/in, max load = 36lbs.

    047 - Length = 3.5", OD = 0.875", ID = 0.715, rate = 11.2lbs/in, max load = 39.2lbs.

    I buy these at my local mom and pop shop, Preston Hardware

    Campi hasn't gotten back to me on prices yet. But Preston has these for $5.99, $4.99 and $1.99 each respectively.

    I haven't used the 812 in anything yet but I'm trying to create a home made based on the Max Shot and put it in. I'll need the lever system to compress this to at least 5 inches.

    I use the 810 in my current Octo because of the ROF. The C-874 is powerful but the ROF is too low for my style of play. RUSHING!!!

    I use the 047 in all my pistols. It gives me a consistent 70' - 80' every time.



    The 2 bag-o-random springs I bought from Princess Auto for $4 a bag.

    I generally use these as catches and random support.
    avatar
    mull

    Posts : 222
    Join date : 2010-09-18
    Age : 32
    Location : Inner Western Suburbs, Victoria

    Re: Springs!!!

    Post  mull on Tue Jun 07, 2011 4:21 pm

    - C-874 Century Spring Corp. AKA, the 'MAN' spring.
    Go to your Bunnings store at the special orders desk.
    Get them to order it for you, as it's not part of their regular stocked items.

    makeitgo wrote:812 - Length = 10", OD = 0.875", ID = 0.679", rate = 13lbs/in, max load = 130lbs.
    Crikey!
    Wait.
    Have you done the right calculations?
    Are the length values "free", or maximum displacement (change from free to solid lengths)?
    They appear to be free lengths.

    I'm going to assume that you'll snip a bit off it and use that, rather than use the whole piece.

    Nice bit of copy and paste there.
    avatar
    238232

    Posts : 203
    Join date : 2010-12-17
    Age : 28
    Location : Sydney

    Re: Springs!!!

    Post  238232 on Tue Jun 07, 2011 4:41 pm

    mull wrote:
    makeitgo wrote:812 - Length = 10", OD = 0.875", ID = 0.679", rate = 13lbs/in, max load = 130lbs.
    Crikey!
    Wait.
    Have you done the right calculations?
    Are the length values "free", or maximum displacement (change from free to solid lengths)?
    They appear to be free lengths.

    I vote the latter, since whenever I've seen rates in my engineering textbooks or in datasheets the distance has been the displacement of the end of the spring from its resting position.

    Wire diameter is 0.098", and if "TOURS" in the original means turns then 23.5 turns then:

    23.5 * 0.098 = 2.303" high when it's at full compression.

    10 - 2.303 = 7.697" displacement

    7.697 * 13 = 100 lb at full compression. Damn....
    avatar
    Mozart

    Posts : 622
    Join date : 2011-04-24
    Age : 24
    Location : Burnie, TAS

    Re: Springs!!!

    Post  Mozart on Tue Jun 07, 2011 4:51 pm

    Good job, Mig, handy stuff.

    LittleBro told me I could special order a Man spring from Bunnings instead of getting it from Canada, save me a fair few dollars there! Hahaa.
    avatar
    makeitgo

    Posts : 161
    Join date : 2011-04-04
    Location : Ottawa, Ontario, Canada

    Re: Springs!!!

    Post  makeitgo on Wed Jun 08, 2011 3:00 am

    238232 wrote:
    I vote the latter, since whenever I've seen rates in my engineering textbooks or in datasheets the distance has been the displacement of the end of the spring from its resting position.

    Wire diameter is 0.098", and if "TOURS" in the original means turns then 23.5 turns then:

    23.5 * 0.098 = 2.303" high when it's at full compression.

    10 - 2.303 = 7.697" displacement

    7.697 * 13 = 100 lb at full compression. Damn....

    Interesting Agent 238232. Either way, I'll still need a lever. I know I can't prime 100 lbs without one. I can barely curl 50lbs with one arm at the gym. The home made I'm proposing will be at least twice the size of the Max Shot.
    avatar
    clunk07
    Administrator
    Administrator

    Posts : 2953
    Join date : 2011-02-02
    Age : 37
    Location : Blackwater, Queensland

    Re: Springs!!!

    Post  clunk07 on Wed Jun 08, 2011 3:34 am

    makeitgo wrote:
    Interesting Agent 238232. Either way, I'll still need a lever. I know I can't prime 100 lbs without one. I can barely curl 50lbs with one arm at the gym. The home made I'm proposing will be at least twice the size of the Max Shot.

    Bicep/concentration curls are an isolation movement. You'll be able to use delts, tricep and bicep, as well as forearm in priming a blaster, so a 50lb compression will be much less strain than a 50lb curl. I had a little over 70lb spring compression in a LS, and had to use both hands, but that was to distribute the weight evenly on the bolt sled (which failed regardless haha) - but the resistance wasn't that bad. (For reference, I curl 110lb with two arms, so we're in the same ball-park).
    avatar
    TheKhakinator

    Posts : 54
    Join date : 2010-08-02
    Age : 26
    Location : Adelaide

    Re: Springs!!!

    Post  TheKhakinator on Sun Jul 03, 2011 2:44 pm

    Anyone got a good idea for a replacement spring for the Stampede that's readily available?
    avatar
    Luke

    Posts : 986
    Join date : 2011-02-04
    Age : 19
    Location : Patterson Lakes, Melbourne

    Re: Springs!!!

    Post  Luke on Sun Jul 03, 2011 2:48 pm

    avatar
    Servulus
    Donator
    Donator

    Posts : 410
    Join date : 2010-07-18
    Age : 47
    Location : Adelaide, Australia

    Re: Springs!!!

    Post  Servulus on Sun Jul 03, 2011 3:29 pm

    I sell springs for the Stampede, the springs are made locally here in Australia, so support Australian business.
    avatar
    clunk07
    Administrator
    Administrator

    Posts : 2953
    Join date : 2011-02-02
    Age : 37
    Location : Blackwater, Queensland

    Re: Springs!!!

    Post  clunk07 on Sun Jul 03, 2011 5:15 pm

    The BT springs are only 9kg load.

    You can get 13kg springs from Singapore, but they need to be honed down to fit in most Stampede plunger tubes, which is a total pain.

    I've trialled the BT 9kg, SgN 13kg and Servulus 13kg.

    Servulus' 13kg spring is by far the winner. It fits perfectly in the plunger tube, and delivery is quicker, and the total price is definitely cheaper.

    Keep the money in Australia for sure.

    Want more proof - I own 7 Stampede's, with 3 being my personal units, 1 completed commission, 2 currently under commissioning, and 1 awaiting someone to commission it from me.

    5 of them have/will have Servulus' springs in them...

    Cheers,

    Winterstrike

    Posts : 260
    Join date : 2009-04-16
    Age : 39
    Location : Adelaide SA

    Re: Springs!!!

    Post  Winterstrike on Sun Jul 03, 2011 10:37 pm

    I also agree with keeping the business in Australia. I hope I don't offend the NH fanboys who worship the northern hemisphere. Oh wait, I don't care.
    avatar
    mister_elliott

    Posts : 327
    Join date : 2011-05-10
    Age : 28
    Location : Ipswich, QLD

    Re: Springs!!!

    Post  mister_elliott on Mon Jul 04, 2011 1:00 pm

    Hey MIG, have you considered using the barrel as a lever, as in break action air rifles? If i ever make a homemade, that's going to be it.
    avatar
    fiz

    Posts : 2
    Join date : 2011-07-16

    Re: Springs!!!

    Post  fiz on Sat Jul 16, 2011 5:58 pm

    Sevuulus,

    Do you still sell these springs?

    avatar
    clunk07
    Administrator
    Administrator

    Posts : 2953
    Join date : 2011-02-02
    Age : 37
    Location : Blackwater, Queensland

    Re: Springs!!!

    Post  clunk07 on Sat Jul 16, 2011 6:00 pm

    fiz wrote:Sevuulus,

    Do you still sell these springs?


    Try here:

    http://www.oznerf.com/t3056-serv-s-spring-sales?highlight=spring+sales

    Cheers,
    avatar
    fiz

    Posts : 2
    Join date : 2011-07-16

    Re: Springs!!!

    Post  fiz on Sun Jul 17, 2011 5:05 am

    clunk07 wrote:
    fiz wrote:Sevuulus,

    Do you still sell these springs?


    Try here:

    http://www.oznerf.com/t3056-serv-s-spring-sales?highlight=spring+sales

    Cheers,

    Thanks Mate
    avatar
    donks

    Posts : 3
    Join date : 2011-08-07

    Re: Springs!!!

    Post  donks on Sun Aug 07, 2011 10:07 am

    Hey all,

    Was just wondering if any one could tell me where to get or hook me up with something like an 11kg spring. Its for a raider cs-35. Fairly new to the whole nerf scene so if any one has any suggestions on the best spring replacement the raider i'd love to hear it.

    Thanks
    avatar
    Luke

    Posts : 986
    Join date : 2011-02-04
    Age : 19
    Location : Patterson Lakes, Melbourne

    Re: Springs!!!

    Post  Luke on Sun Aug 07, 2011 10:09 am

    avatar
    clunk07
    Administrator
    Administrator

    Posts : 2953
    Join date : 2011-02-02
    Age : 37
    Location : Blackwater, Queensland

    Re: Springs!!!

    Post  clunk07 on Sun Aug 07, 2011 11:20 am

    donks wrote:Hey all,

    Was just wondering if any one could tell me where to get or hook me up with something like an 11kg spring. Its for a raider cs-35. Fairly new to the whole nerf scene so if any one has any suggestions on the best spring replacement the raider i'd love to hear it.

    Thanks

    Hey, welcome to OzNerf.

    Could you please update your profile with your age, location, avatar etc etc.

    All the information you require is in the Rules thread.

    Enjoy your time on here.

    Cheers,


    ____________________________________________________________________________________________________________________________________________________________


    Clunk Weapons Co. Blaster-smith Services:
    Commissions offered on Stampede, LongShot, Spectre, LED Maverick.

    CWC Blaster-smith Services
    CWC Custom Paint
    avatar
    oznerfnerd
    Trade Merchant
    Trade Merchant

    Posts : 349
    Join date : 2011-04-22
    Age : 48
    Location : NSW

    Re: Springs!!!

    Post  oznerfnerd on Mon Aug 08, 2011 9:25 am


    Hey, thanks for that Luke!

    That kit's going OK, with some good reports/feedback from customers.

    I have sitting on my desk right now (just arrived today)samples for my Australian made inner/outer longshot spring combination, totaling about a 21kg load.

    If I wasn't 98% dead with the flu, I'd be putting them through their paces.

    Soon...
    avatar
    Ungmon

    Posts : 272
    Join date : 2011-08-08
    Age : 18
    Location : NSW

    WOW

    Post  Ungmon on Mon Aug 08, 2011 12:37 pm

    WOW those are some beefy springs, is the second one (left to right) stronger than a K26?
    Edit: How do you cut down a really beefy spring e.g K26
    avatar
    Luke

    Posts : 986
    Join date : 2011-02-04
    Age : 19
    Location : Patterson Lakes, Melbourne

    Re: Springs!!!

    Post  Luke on Mon Aug 08, 2011 3:31 pm

    oznerfnerd wrote:

    Hey, thanks for that Luke!

    That kit's going OK, with some good reports/feedback from customers.

    I have sitting on my desk right now (just arrived today)samples for my Australian made inner/outer longshot spring combination, totaling about a 21kg load.

    If I wasn't 98% dead with the flu, I'd be putting them through their paces.

    Soon...
    No problem :), You will be seeing a order from me soon :).

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    Re: Springs!!!

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