A-5 / 98 Howitzer Bolt by Orange
Posted 17 August 2006 - 10:49 AM
Internals are usually for greater effeciency...
Posted 17 August 2006 - 10:52 AM
I have a Rufus Dawg Wicked bolt for my A-5 and I am very pleased with it's performance. It is also made of self-lubing plastic.
Posted 17 August 2006 - 11:40 AM
Delrin, which the rufus dawg bolt & power tube are made of, will self-seal if 2 pieces are in contact with each other. The seal between the bolt and power tube is, as if, there was an o-ring there.
It is also used extensively in paintball markers, where it is used to make bolts, pump handles and many other parts. Its low cost, adequate strength, light weight and self lubricating properties make it ideal for markers. Its competition in this area, Nylatron, while slightly lighter is more prone to swelling. A swelled part can make the mechanism impossible to operate and sometimes even damages the marker. Nylon-based products such as Nylatron have better wear-resistance than Delrin, but do not have good moisture-resistance, and therefore not suitable to high-humidity or underwater appplication.
So really the internal o-ring is only needed if you have an aluminium power tube.
Being an engineer I still think the rufus dawg design is superior, and well worth the cost.
Posted 17 August 2006 - 11:43 AM
But in all reality, I could see it maybe being a little more efficient, but it won't decrease kick, and you might save a few extra shots because of that second o-ring.
My advice, buy a bag of paint and go target shoot. You'll improve your skill, and have fun, for the same price.
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