Ahh it drives me nuts over the years ive owned my Texan no matter what i do the tank lossens..Accuracy suffers..No matter how tight i tighten tank spin-loc and set screw it always works free some how.. I can achieve accuracy with my .510 but the tank valve has to be perfectly tight.. The big spring and hammer with one once slugs lossens most things.. I really wish for a much larger set screw that i wouldnt have to worry about stripping out...
Airforce AIRFORCE Texan tired of tank loosening!!!
- Thread starter RM.510bigbore
- Start date
As long as these rifles have been around, I would think the folks at Airforce Airguns would troubleshoot known issues and introduce sturdier components.
I think im going to have the set screw for the tank drilled and tapped for a much larger set screw...As it is now when i get the tank tight enough not to move..I cant even remove with spin lok wrench , without breaking them..Broke 3 this year...I have to use a punch and hammer and hit edge of spin lok to get to loosen..If i tighten as a normal person will...It will loosen after 15-20 shots...Man it makes me mad...Every time groups open up...Dang tank loose again.
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Have you tried a thread locker on the spin lock ring? The bad with going to a larger set screw is you may also be decreasing the thread pitch with the larger screw. With the thin walled extrusion that may cause thread stripping on the extrusion.
I would lean toward getting things reasonably tight, and then transfer punch the set screw hole onto the spin lock collar. Take apart and drill a shallow counter sink at that punch mark. That will give the set screw something to seat into and lock things down. Maybe change to a pointed set screw at the same time.
I would lean toward getting things reasonably tight, and then transfer punch the set screw hole onto the spin lock collar. Take apart and drill a shallow counter sink at that punch mark. That will give the set screw something to seat into and lock things down. Maybe change to a pointed set screw at the same time.
You could have a bigger set screw, or you can have 2 put in.
I think it's also because of the stock being unsupported, since I have had the Mad Dog stock and put a small piece of rubber under the bottle, I haven't had It loosen. Instead of Airforce making new pcps (TX REX) it would be nice to have them redesign the rear of the stock so that would no longer be a problem.
I have a full stock on my Texan also...That is a good idea..Ill find some rubber today and make a wedge between tank and stock...Ill try the rubber wedge and lok-tite on the set screw..I will try everything possible before finding someone with a milling machine to do new set screws..Very thankful for the ideas and expierence provided
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That's why we are here and your Welcomed.
you can put some teflon tape around the valve threads and if that works you might order a new nut it could be out of spec but if you hold the gun tight and push down hard with your cheek I would definately fill the gap between the stock and bottle . Mad dog himself told me to do that if I had a problem.
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