The little beast….   1 comment

When I purchased this airgun 9/2009, I only looked at how powerful it was. I did not look at anything else. Well, time has now shown me there are other things one needs to consider before purchasing a quality airgun.

However, my choice has proven to be a good choice. Not a great choice, mind you, but a good one.

Here is a picture of “the little beast” as I have come to call it.

AR6 Hunting Master - f

Here is a picture before I removed the camo tape.

Evanix AR6

This gun produces approx. 60+ fpe and is a true hunting gun. Currently I am using 32.4 grain Eun Jin pellets and they produce over 60 foot pounds of energy.

Why “little beast” one may ask? Simple. Because when the Jack Haley .457 arrives, it will rightfully claim the name “the beast!”

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Posted February 25, 2010 by avv604 in Evanix AR6

One response to “The little beast….

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  1. Hi,

    The leakage problem from the firing valve is fairly easy to fix providing the seating surfaces of the nylon valve plug and steel seat are not corroded or badly damaged.

    Remove the firing pin assembly (nylon valve plug and pin) from the seat. Have a look at both seating surfaces (the nylon part and steel part) with a 10x magnification lens looking for radial scores or major pitting damage. If there are no major issues get some cutting paste often sold in blocks that is fine and suitable for plastics. Scrape some onto the steel surface and then reinsert the firing pins. Push the two parts together firmly (maybe 1 kg of force max) and rotate the two parts relative to each other. Go back and forth and then turn them about 60 degrees and then go back and forth again. Thoroughly clean the parts with air and some silcon spray. Pay particular attention to the plastic part. The cutting paste tends to embed in this and make a dark ring. This must be removed with a clean tissues wetted with silicon spray until the ring is gone.

    Reassemble the firing valve remembering to put the spring back in, the screw it back into the guns air chamber. Put some NON mineral based lube (I use silicon spray) onto the part to wet the O ring to prevent damage to it. Once the firing valve is in place pressurize the gun to about 25% max and listen for leaks. If you can’t here any, go and have a coffee and see whether the gun loses any pressure over a couple of hours. If it doesn’t you probably have a winner. If it still leaks, but much less than before you can repeat the lapping until you get a seal.

    I had to have a couple of goes before I got a good result.

    One thing to avoid is resisting the temptation to use a battery drill to rotate the valve plug against the valve seat. Three are two problems with this, the main one is the buildup of heat, nylon melts at about 120 deg. The second problem is that lapping plastic in one direction for any period of time produces localized hard spots which will prevent a good seal and which are hard to remove. A cyclic motion tends to release the cutting paste particles from the plastic so buildups are less likely to occur.

    If you can’t get a seal after a couple of goes have another look through the lens to see whether there are any scratches or pits that haven’t been touched by the lapping process.

    If they are still deep lapping will probably get rid of them, but it will take a lot of work.

    Probably best to buy some new parts.

    I would post a diagram of all of this, but I can’t figure out how to do this

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