couplers

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beginingrocket
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couplers

Post by beginingrocket »

hey guys I have had trouble making couplers and since im 13 I cant buy cuz I don't have any money them I say air command tapping 3/4s inch pvc adapter and wanna do that how and what tap should I use to tap that
beginingrocket
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Re: couplers

Post by beginingrocket »

incorrect grammer sporry
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bugwubber
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Re: couplers

Post by bugwubber »

Are you trying to make a tornado coupler? That can be done without pvc to increase your inside diameter. Melt the tops of two bottle caps, stick them together, Use a hot iron to melt a hole through the caps if you can. Otherwise drill a hole through them. Wrap the caps in a couple layers of duct tape.
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beginingrocket
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Re: couplers

Post by beginingrocket »

im not a Robinson coupler fan,so yes a tornado tube ill try that
Maru Ivan Rico
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Re: couplers

Post by Maru Ivan Rico »

Or you could epoxy two caps together in a FTC sleeve, much like the first splice technique of ACR. I've been using it without issues,but when you do it improperly, then it'll explode. I've tested it to 110 psi, and it held.
kitestring
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Re: couplers

Post by kitestring »

I had trouble with gluing caps together in a sleeve. A few separated at pressure. (PS: we can't get FTC tube where i live).
So i started making these couplers instead. details at http://waterrocketsbrisbane.blogspot.com.au/
Had no issues at all ....yet.
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Alien Space Agency
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Re: couplers

Post by Alien Space Agency »

How heavy is it? Mine weighs around 25-30 grams.
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kitestring
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Re: couplers

Post by kitestring »

Alien Space Agency wrote:How heavy is it? Mine weighs around 25-30 grams.
Sorry didn't see this. They weigh approx 12grams.
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Alien Space Agency
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Re: couplers

Post by Alien Space Agency »

Hmm... my estimates are too great. Probably 10-20 grams :3. How thick is the PVC sleeve?
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Re: couplers

Post by Alien Space Agency »

Oh, and do you think it could be used on Type C caps?
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kitestring
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Re: couplers

Post by kitestring »

Alien Space Agency wrote:Oh, and do you think it could be used on Type C caps?
Sorry not sure what type C caps are? I think they might be the shallower ones. In which case, I have no experience of them. I have stockpiled a lot of the older Deeper flange softdrink caps.
I use Holmans 20mm PVC tube. It gets a bit thinner as i sand it down after epoxying. PS: i'm in OZ so US products are scarce.
Images of what i used are on previous link. I mainly use the caps for the inbuilt seal.
hope that helps. PLEASE NOTE: i usually fly at pressures not exceeding 110psi.
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Alien Space Agency
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Re: couplers

Post by Alien Space Agency »

kitestring wrote:
Alien Space Agency wrote:Oh, and do you think it could be used on Type C caps?
Sorry not sure what type C caps are? I think they might be the shallower ones. In which case, I have no experience of them. I have stockpiled a lot of the older Deeper flange softdrink caps.
I use Holmans 20mm PVC tube. It gets a bit thinner as i sand it down after epoxying. PS: i'm in OZ so US products are scarce.
Images of what i used are on previous link. I mainly use the caps for the inbuilt seal.
hope that helps. PLEASE NOTE: i usually fly at pressures not exceeding 110psi.
1. Yes, Type C caps are the one piece shallow caps.
2. I live in PH and Western products are very scarce.
3. I fly at 70-100 psi.
4. Is Holman's a brand? And 20mm doesn't even fit a cap inside. You might be referring to 25mm.
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kitestring
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Re: couplers

Post by kitestring »

Alien Space Agency wrote:
kitestring wrote:
Alien Space Agency wrote:Oh, and do you think it could be used on Type C caps?
Sorry not sure what type C caps are? I think they might be the shallower ones. In which case, I have no experience of them. I have stockpiled a lot of the older Deeper flange softdrink caps.
I use Holmans 20mm PVC tube. It gets a bit thinner as i sand it down after epoxying. PS: i'm in OZ so US products are scarce.
Images of what i used are on previous link. I mainly use the caps for the inbuilt seal.
hope that helps. PLEASE NOTE: i usually fly at pressures not exceeding 110psi.
1. Yes, Type C caps are the one piece shallow caps.
2. I live in PH and Western products are very scarce.
3. I fly at 70-100 psi.
4. Is Holman's a brand? And 20mm doesn't even fit a cap inside. You might be referring to 25mm.

Yes Hollmans is a brand. Sorry, yes is 25mm.
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Alien Space Agency
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Re: couplers

Post by Alien Space Agency »

Is it the pipe itself? Or the slip coupling?
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kitestring
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Re: couplers

Post by kitestring »

Alien Space Agency wrote:Is it the pipe itself? Or the slip coupling?
Yes, just the pipe itself. Caps fit into very tightly.