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Author Topic: Star M249  (Read 2205 times)

Offline Dust2Dust

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Star M249
« on: July 15, 2005, 03:47:03 AM »
http://www.starairsoft.com/S_AEG_03.htm  They're coming out with an M249 now.  Supossedly cheaper than the CA with a new mechbox that is made out of really, really strong plastic that can handle more stress then a metal one.


Watch the video, you can see the mechbox http://www.starairsoft.com/Video/M249A.wmv

I just sent the guys at Star an email for any more information, hopefully they'll have a reply soon.
« Last Edit: December 31, 1969, 05:00:00 PM by Dust2Dust »
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Offline Mugen

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« Reply #1 on: July 15, 2005, 08:22:23 AM »
Do they say what TYPE of polymers and plastics they put into the mechbox?  Its a bold statement to say that it can outlast the metal gears with plastico.  I am skeptical...but intruigued.
« Last Edit: December 31, 1969, 05:00:00 PM by Mugen »
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Offline Reaver

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« Reply #2 on: July 15, 2005, 08:46:09 AM »
Quote from: "Mugen"
Do they say what TYPE of polymers and plastics they put into the mechbox?  Its a bold statement to say that it can outlast the metal gears with plastico.  I am skeptical...but intruigued.


  I'd be skeptical as well.  A chaper version using plastic means it will not last as long.  As the saying goes... you get what you pay for.  :)
« Last Edit: December 31, 1969, 05:00:00 PM by Reaver »
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Offline gixser13

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« Reply #3 on: July 15, 2005, 09:16:50 AM »
Glocks are made of polymer plastic. Polymers are the future light weight and strong as hell,

Tell you what I drive your car over a Glock or Styer then drive it over a Bryco or jennings(same crap our AEGs gearboxes are made of)  
See which one still fires
« Last Edit: December 31, 1969, 05:00:00 PM by gixser13 »
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Offline Reaver

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« Reply #4 on: July 15, 2005, 09:37:28 AM »
Quote from: "gixser13"
Glocks are made of polymer plastic. Polymers are the future light weight and strong as hell,

Tell you what I drive your car over a Glock or Styer then drive it over a Bryco or jennings(same crap our AEGs gearboxes are made of)  
See which one still fires


  Yes, but Glocks aren't cheap now are they?  Those high strength polymers have a cost ratio typically higher than metal.  They also require different manufacturing techniques.  Finally, I'll bet the Star M249 isn't made out of the same polymers a Glock is.  :)

  Remember... you get what you pay for.  :)
« Last Edit: December 31, 1969, 05:00:00 PM by Reaver »
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Offline Mugen

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« Reply #5 on: July 15, 2005, 11:15:19 AM »
Not only that..but the GLOCK lower  is a polymer...but it does not have tiny intricate moving parts and gears...it has metal assist rails for the slide to glide up and down and has other metal back up parts to assist the polymer to withstand the movement and friction of metal on plastico.....
But a plastic gear is just that....a plastic gear.......a high rev'ving plastic gear at that.....I am looking at it with great interrest though, and if the gears hold up like they say they do..I am all for it.  They may also make spares, so we would be covered also.. j.i.c.
« Last Edit: December 31, 1969, 05:00:00 PM by Mugen »
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Offline busta_cap

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« Reply #6 on: July 15, 2005, 11:31:57 AM »
I'm guessing you guys have never heard of Delrin.....
« Last Edit: December 31, 1969, 05:00:00 PM by busta_cap »
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Offline gixser13

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« Reply #7 on: July 15, 2005, 11:37:45 AM »
I dont see the airsoft  technology going backwards. The airsoft community knows that if you sell a SAW type Aeg its going to get USED at high rates of fire and for long burst!

They didnt say the gears are  polymer only the gearbox didnt they?

well lets just see how it works out
« Last Edit: December 31, 1969, 05:00:00 PM by gixser13 »
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Offline Mooncruiser

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« Reply #8 on: July 15, 2005, 11:43:40 AM »
I was thinking Delrin, too.

Anyone know what kind of deformation or shear stress Delrin could take?
It's great for some gear applications.
« Last Edit: December 31, 1969, 05:00:00 PM by Mooncruiser »
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Offline Reaver

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« Reply #9 on: July 15, 2005, 11:48:29 AM »
Quote from: "busta_cap"
I'm guessing you guys have never heard of Delrin.....

   


  You mean this Delrin?  ;)



Delrin® (Polyoxymethylene)

Delrin is a rugged polymer that serves as an excellent choice for long-term mechanical stability for products such as fittings and threaded adapters. It is important to note that Delrin, while being strong mechanically, cannot tolerate to be in the presence of acidic or basic solutions for long periods of time, as the polymer will degrade. It is best to use Delrin with neutral pH aqueous solutions or organic solutions for guaranteed best performance.

Temperature Range up to 60° C
Thread Strength Excellent
Oxygen Permeability N/A
pH Range 6 to 8
Sterilization Techniques  
Autoclavable? Y

  By the way, Delrin suffers from micro-porosity and density differences, typically in the center portion of the material.  This can cause machining problems due to said denisty diffrences.

  Delrin has a rather high coefficient of thermal expansion when being
machined.  If a 1/2" diameter hole is reamed to size, it will come out
a half thousandth or so smaller than the reamer.  This becomes very
frustrating when you are trying for a nice close fit as in a bushing
or bearing.  A brand new, dead sharp tool is needed to minimize this
effect.

  Larger parts (approx. 12" long) machined from plate will also warp
after machining, and warp even more while lying there on the shelf
waiting to be used.

  Needless to say, I'll take my gears made out of high grade steel, aluminum or even titanium.  Delrin probably isn't the best idea for gears.  And it'll be cheaper since it won't require the expensive overhead Delrin would.  :)
« Last Edit: July 15, 2005, 11:51:16 AM by Reaver »
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Offline busta_cap

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« Reply #10 on: July 15, 2005, 11:49:35 AM »
When I used to race RC cars, they made pinion gears (the big ones) out of delrin..Shit was expensive..but worth it..quit as hell, required almost no lubing and extreemely small..For those who don't know about it..Its CNC machined plastic/nylon. I was talking to a few people last week...about maybe having an all DELRIN gearbox...for those who want silence, this would be the ultimate.. IT would also require no lube...which is nice and keeps the gearbox clean.. Im  sure you know what Delrin is Dave, you work in automotive.
« Last Edit: December 31, 1969, 05:00:00 PM by busta_cap »
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Offline busta_cap

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« Reply #11 on: July 15, 2005, 12:00:07 PM »
I don't know about that reaver... Ive worked with it before(even been around it machined)and when it's done right it's strong as hell...
« Last Edit: December 31, 1969, 05:00:00 PM by busta_cap »
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Offline Reaver

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« Reply #12 on: July 15, 2005, 12:07:33 PM »
Quote from: "busta_cap"
I don't know about that reaver... Ive worked with it before(even been around it machined)and when it's done right it's strong as hell...


  The key in your sentence is "done right."  Delrin requires a higher QA than standard metals to make sure the part falls within proper tolerance.  Hence the reason Delrin machined parts are more expensive.  It's cheaper just to go with high grade metal gears.  And cheaper is one of the reasons for going from paintball to airsoft.  :)
« Last Edit: December 31, 1969, 05:00:00 PM by Reaver »
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Offline busta_cap

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« Reply #13 on: July 15, 2005, 12:13:11 PM »
Quote from: "Reaver"
Quote from: "busta_cap"
I don't know about that reaver... Ive worked with it before(even been around it machined)and when it's done right it's strong as hell...

  The key in your sentence is "done right."  Delrin requires a higher QA than standard metals to make sure the part falls within proper tolerance.  Hence the reason Delrin machined parts are more expensive.  It's cheaper just to go with high grade metal gears.  And cheaper is one of the reasons for going from paintball to airsoft.  :)
Besides looking ghey in all that purple and pink gear? I didn't say it was cheap...but its quiet..and requires no maintenance..
« Last Edit: December 31, 1969, 05:00:00 PM by busta_cap »
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Caderade

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« Reply #14 on: July 15, 2005, 12:19:35 PM »
Or mabye technology is advancing :shock: . They have a saying in the computer industry...faster, cheaper, better. The more technology grows, the cheaper and more adavanced it becomes, See what I'm saying?
« Last Edit: July 15, 2005, 12:25:52 PM by Caderade »
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