Q:

Converting a QB78 to PCP.

Yeah that’s about it. nice to know isn’t it?

Also an image of the cad drawing so far, valve is still in tweaking phase as I’m currently drilling all the holes in the hydraulic pipe.

Mods/Machinists

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The Netherlands. You know that tiny country in Europe.

Also known as the Netherworld.

Well I measured it and I’m allmost certain it’s M22x1 Wich is a standard thread size according to my poster. (Yeah it’s one of those posters from phantom wich has a lot of thread sizes on it and how much force to put on the drill, it’s pretty cool)

So yeah. thanks for the help. 🙂

I’ll confirm it for you when I get home.

Where are you at?

Good to know that I didn’t waste money on the thread gauge then (all though metric is the standard here so it wouldn’t be completely wasted)

At any rate, thank you for helping. 🙂

thte thread is indeed metric and something like 22mm x .75mm IIRC

Walter….

quote Voltar_1:

quote Necrosis:

You guy’s wouldn’t know the original thread size of the co2 screw on cap would you? I want to do a test with some low pressure air. See if the pellet goes out at 5 bars.

But I cannot really decide on a thread.

Are you sure you have the skills to be ‘building’ a PCP? sounds sketchy if you cannot determine a thread size………

use the OEM cap and make up a plug to fit.

Yeah, the problem is that we don’t have thread gauges lying around here (At home anyway) I bought a metric one today and I’ll check the thread and if it’s actually metric. wich I hope.

quote Necrosis:

You guy’s wouldn’t know the original thread size of the co2 screw on cap would you? I want to do a test with some low pressure air. See if the pellet goes out at 5 bars.

But I cannot really decide on a thread.

Are you sure you have the skills to be ‘building’ a PCP? sounds sketchy if you cannot determine a thread size………

use the OEM cap and make up a plug to fit.

You guy’s wouldn’t know the original thread size of the co2 screw on cap would you? I want to do a test with some low pressure air. See if the pellet goes out at 5 bars.

But I cannot really decide on a thread.

Viewing 7 replies - 1 through 7 (of 7 total)

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