28 replies to this topic

[wohnson89]

I just got done with what i thought was my greatest gun ever, the bolt action triple nightfinder with a pvc stock.









Then wen i went to fire it it acted like a stock longshot. (it sucked monkies if i dare say.) the spring is one i got from a local hardware store and i thought it would be good. What spring should i use? I thought about a +bow spring, would that work?

p.s. its not fully painted yet, its just the texture on it now.

Edited by wohnson89, 20 September 2009 - 10:07 PM.

[The Nerf Devil]

Well I am going to say first check other areas like barrel fit, plunger seal, and did you lube it? Also have you been loading the darts all the way back?(Stupid question I know but it has to be asked in my opinion) How stiff is the spring? How far back does it catch?

[spartan062]

Edit: Nerf Devil beat me to it.

Edited by spartan.062, 20 September 2009 - 04:44 PM.

[MoonMaster]

Stalk? Lol.

It's stock.

Don't get me wrong though. I hope this gets fixed. It looks really cool.

[wohnson89]

Well I am going to say first check other areas like barrel fit, plunger seal, and did you lube it? Also have you been loading the darts all the way back?(Stupid question I know but it has to be asked in my opinion) How stiff is the spring? How far back does it catch?

i think its about 1/16 in. and it compresses to an inch and a half

[wohnson89]

Stalk? Lol.

It's stock.

Don't get me wrong though. I hope this gets fixed. It looks really cool.

Ha. Sorry i gotta change that then.

[The Nerf Devil]

So when it is primed the spring is fully compressed? What barrel material are you using? What is the fit like with your foam? How is your seal?

[oh1134]

Try plowing down th barrel. If it leaks, make sure the plunger head is sealed real nice and the barrel has been securely and airtight(ly?) glued on.

[wohnson89]

So when it is primed the spring is fully compressed? What barrel material are you using? What is the fit like with your foam? How is your seal?

When i prime it it is fully compressed, I used 9/16 brass for the barrel it works very well with my darts on other guns, I use stock raider darts, very good seal(at first i put in 2 o-rings but it didnt work)

uh...whats plowing the barrel mean(its not air leaks that is the problem)

Edited by wohnson89, 20 September 2009 - 05:33 PM.

[The Nerf Devil]

I think he meant blow. If your seal is too good it creates too much friction. Have you lubricated the plunger head? Streamlines or raider/longshot/recon darts have a hole in one side that causes them to fishtail out of higher power guns and don't weigh enough to work well with higher power guns. Streamlines are also loose in 9/16 which is a bad thing for springers you want a tight fit, try putting some 17/32 or tightening rings in the back of the barrel.

[wohnson89]

I think he meant blow. If your seal is too good it creates too much friction. Have you lubricated the plunger head? Streamlines or raider/longshot/recon darts have a hole in one side that causes them to fishtail out of higher power guns and don't weigh enough to work well with higher power guns. Streamlines are also loose in 9/16 which is a bad thing for springers you want a tight fit, try putting some 17/32 or tightening rings in the back of the barrel.

thanks for the help so far but its not what im looking for. I think the problem is the spring. Would a +bow spring work?

this is the lube that i use for the o-ring


here is a video of me shooting it.
View My Video

[SonReeceSonJensen]

Sorry…all the help that can be given has bee n given.

BUT, the shear amount of effort on this device is quite impressive so props for that.

Use one piece of PCV (or whatever you want) for the tube and a home-made plunger head and you are in business.

And great work, regardless of results.

[flamincows]

It might be able to handle the [k26] spring, but I would advise that you reinforce everything that takes any stress because of the heavy spring. And I mean reinforce it well. So you'd probably want to focus on the plunger rod, spring rest, and catch. And even then don't be surprised if it breaks.

[wohnson89]

Sorry…all the help that can be given has bee n given.

BUT, the shear amount of effort on this device is quite impressive so props for that.

Use one piece of PCV (or whatever you want) for the tube and a home-made plunger head and you are in business.

And great work, regardless of results.

Thanks for the complment. And thanks to everyone else for the rest of the help. but i still have yet to have my main question answered, will a +bow spring work?

It might be able to handle the [k26] spring, but I would advise that you reinforce everything that takes any stress because of the heavy spring. And I mean reinforce it well. So you'd probably want to focus on the plunger rod, spring rest, and catch. And even then don't be surprised if it breaks.

This may be a really retarded thing to ask, but what is a [k26] spring?
p.s. I already reinforced the crap out of the thing.

[ice]

This may be a really retarded thing to ask, but what is a [k26] spring?
p.s. I already reinforced the crap out of the thing.

A [k26] spring is a plus bow spring. It can be ordered from mcmasters.com (I think).

[Sqeaver]

Whoa, whoa, whoa!!!

very bad choice of lubricant (dont hear that very often)

I've tried using the same teflon silicon stuff and its terrible for o-rings

go find white lithium grease

that teflon stuff swells o-rings like no other

that may be a big part of your problem

[flamincows]

This may be a really retarded thing to ask, but what is a [k26] spring?
p.s. I already reinforced the crap out of the thing.

A [k26] spring is a plus bow spring. It can be ordered from mcmasters.com (I think).

Correct, and one more caution: Cut the spring to the length of the plunger tube and no longer. However you may have to cut a new catch as I doubt the [k26] spring cut to the length you'll need will scrunch up to an inch an a half and that would mean losing some of that massive payload of air that is the whole point of this blaster (I'm assuming). You may want to try a wider plunger tube and a [k25] spring (I don't want to look up the part number but it's the same as the +bow spring only with a five at the end instead of a six) as the coils are spaced out a little farther and it compresses more. It's also less likely to destroy your blaster and it'll wash your car for eight bucks (I really love this spring).

[TantumBull]

Your problem isn't the spring. While you may not have an extremely powerful spring in there, its still of a decent wire thickness and more than strong enough for your applications. Your problem lies elsewhere, most likely in the fact that you're using stock streamlines. When you say it performs like a stock LS, do you mean in range, accuracy, or what?

[Blue]

I watched the video, and I am guessing you killed your O-ring with the terrible choice of lube (SILICONE SPRAY DESTROYS RUBBER), or maybe your plunger head if you didn't pad it, but the brass barrel looks like the main problem. How is that sealing with the gun? You need about a quarter of an inch of the barrel to be inside the next size up of brass to make a seal, and that doesn't look to be happening in your video. You can clearly hear a thunk instead of pop, I suggest lengthening the brass out of the nf to make the seal, and cutting a slot in the barrel to make a breach if the video is how you normally operate it. Your problem could also just plain be the stock nf O-ring simply doesn't seal with your choice of a plunger tube.

[J cobbers]

I just want to point out that in general Silicone lubes don't destroy o-rings. It maybe that particular brand is the problem. Check if it contains any petrolium chemicals. Silicone is usually unreactive which is why your orings are made of it, along with breast implants.

Fact: the rate of women with breast caners and implants is not significantly higher than those with out them. proving the safety of silicone in the human body and of course nerf guns: http://www.cancer.go.../siliconebreast

[wohnson89]

Well then i am going to go kick the crap out of that guy that told told me to buy this certain kind of lube for o-rings. Stupid ace hardware.

Edited by wohnson89, 22 September 2009 - 10:28 AM.

[wohnson89]

I watched the video, and I am guessing you killed your O-ring with the terrible choice of lube (SILICONE SPRAY DESTROYS RUBBER), or maybe your plunger head if you didn't pad it, but the brass barrel looks like the main problem. How is that sealing with the gun? You need about a quarter of an inch of the barrel to be inside the next size up of brass to make a seal, and that doesn't look to be happening in your video. You can clearly hear a thunk instead of pop, I suggest lengthening the brass out of the nf to make the seal, and cutting a slot in the barrel to make a breach if the video is how you normally operate it. Your problem could also just plain be the stock nf O-ring simply doesn't seal with your choice of a plunger tube.

Well easist way to explain it is through another video.

View My Video

i sound weird because im sick right now.

Whoa, whoa, whoa!!!

very bad choice of lubricant (dont hear that very often)

I've tried using the same teflon silicon stuff and its terrible for o-rings

go find white lithium grease

that teflon stuff swells o-rings like no other

that may be a big part of your problem

But i just opened it back up and there is no visible sign of damage to the o-ring.

This may be a really retarded thing to ask, but what is a [k26] spring?
p.s. I already reinforced the crap out of the thing.

A [k26] spring is a plus bow spring. It can be ordered from mcmasters.com (I think).

Correct, and one more caution: Cut the spring to the length of the plunger tube and no longer. However you may have to cut a new catch as I doubt the [k26] spring cut to the length you'll need will scrunch up to an inch an a half and that would mean losing some of that massive payload of air that is the whole point of this blaster (I'm assuming). You may want to try a wider plunger tube and a [k25] spring (I don't want to look up the part number but it's the same as the +bow spring only with a five at the end instead of a six) as the coils are spaced out a little farther and it compresses more. It's also less likely to destroy your blaster and it'll wash your car for eight bucks (I really love this spring).

So it would be a better choice than the [k26]?
oh and what do you mean by "it washes your car for eight bucks"?

Your problem isn't the spring. While you may not have an extremely powerful spring in there, its still of a decent wire thickness and more than strong enough for your applications. Your problem lies elsewhere, most likely in the fact that you're using stock streamlines. When you say it performs like a stock LS, do you mean in range, accuracy, or what?

I use washer stefens too and they do the same thing.
I say that because it sucks range and power wise.

Edited by wohnson89, 22 September 2009 - 11:15 AM.

[wohnson89]

Here are the internals of the gun

Edited by wohnson89, 22 September 2009 - 11:23 AM.

[Lynx]

Your seals are bad. Either o ring or the barrel. Streamlines suck ass, the o ring looks like its too small, the plunger head looks crooked and the barrel is 9/16ths, which may or may not be right for your streamlines.

[wohnson89]

Your seals are bad. Either o ring or the barrel. Streamlines suck ass, the o ring looks like its too small, the plunger head looks crooked and the barrel is 9/16ths, which may or may not be right for your streamlines.

First off, my seals are fine. Streamlines work, but i use washer stefens mostley. The o-ring not to small at all. The plunger is just a little crocked. 9/16 is just fine, it works perfect for me.

From what you all have told me my to do list includes:
-get white lithium greese
-get [k25] or [k26] spring
-fix the barrel seal

Thank you NerfHaven