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Sear carbine mark 3 spring help

sear carbine aeromech

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#1 Trashmouse

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Posted 13 May 2017 - 02:11 PM

I've recently seen Aeromech's sear carbine video and I thought to myself: "Can this be easy enough to get me in to homemades?". The PVC and cuttingboard work is doable for me. I've got a nice amount of tools, but I lack springs.

I live in Europe so I don't have acces to Mcmaster, and I don't want to spend $50 on shipping for a pack of 3 springs bought of Nerfhaven. So I wondered if I could use a normal elite/longshot upgrade spring to power my sear carbine. Any ideas?


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#2 CaptainSlug

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Posted 13 May 2017 - 03:09 PM

Aftermarket springs for blasters are going to be a bit short for most homemade designs, and as such you will have to shorten them to match the shorter spring. Try to go to a hardware store and buy the smaller diameter of "door closer".

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You'll have to cut one end of it off OUTSIDE while it's sitting in a disposable pan. It's going to barf a handful of grey grease from inside, but you'll find a 19-inch long spring inside that's similar in specifications to most of the springs we use stateside. The downside of this is cost ($15usd) and effort involved. Otherwise you're going to have to shop industrial suppliers.


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#3 Trashmouse

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Posted 13 May 2017 - 03:12 PM

Aftermarket springs for blasters are going to be a bit short for most homemade designs, and as such you will have to shorten them to match the shorter spring. Try to go to a hardware store and buy the smaller diameter of "door closer".

 

You'll have to cut one end of it off OUTSIDE while it's sitting in a disposable pan. It's going to barf a handful of grey grease from inside, but you'll find a 19-inch long spring inside that's similar in specifications to most of the springs we use stateside. The downside of this is cost ($15usd) and effort involved. Otherwise you're going to have to shop industrial suppliers.

Thanks for the help slug. I recently moved houses so I might have on of these laiying around in my shed. If not I'll just get one from the store.

Never knew home those door thingies worked


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#4 CaptainSlug

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Posted 13 May 2017 - 08:13 PM

The spring moves a plunger inside and you adjust how quickly it pulls by opening or closing the restrictiveness of the passageway that the plunger is trying to pump air through.

 

The plunger itself cannot be used for Nerf though because the plastic they are made out of will shatter if slammed into something at full speed.


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The little critters of nature, they don't know that they're ugly. That's very funny, a fly marrying a bumble bee. I told you I'd shoot, but you didn't believe me. Why didn't you believe me?


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