Originally Posted by bigwick
No, never lubed it. Back when S!ress used to visit this forum he seemed to know the most about Nylatron and its properties and after I had already purchased it, he mentioned that contrary to the advertising of Nylatron it in fact swells more than delrin. I would have to totally agree with him after using this bolt, now. Then again, I am the only one who seems to have complained about this so, it might just be a bad bolt.
S!ress is correct, Nylatron does swell more than delrin. Proof:
(I posted this a while back, but they are some cool graphs that will clearly explain/illustrate the advantages of delrin over nylatron)
Delrin is also know as ertacetal C
Nylatron being used for bolts is either Nylatron NSM or Nylatron GSM...
Now hear are some charts to examine:
First is the wear resistence graph:
You will see ertacetal c blows away all nylatrons in wear resistence...in fact ertacetal blows everything away except for cestilene which is very hard and very expensive.
Next table shows that ertacetal c is physiologically inert and suitable for food contact...meaning it is very unlikley it will absorb oils. It shows that it is inert...the "black" delrin is omitted from FDA compliance due to the dye used in it however it is still inert.
Obviously nylon/nylatrons are not inert and not suitable for food contact...hey if it is not suitable for food is it suitable for your gun
Finally the dynamic coefficient of friction graph...
As you can see nylatron NSM is the lowest with ertacetal c right behind it...what is interesting is all the other nylatrons NS,GSM,MC-901 all have higher friction coeficcients than ertacetal c.
This is why I believe delrin (ertacetal c) is superior to nylatrons. Beter wear resistence, more inert (despite what some may claim), and better friiction properties than all nylatrons except NSM and it is VERY close to NSM in the friction department.
Also as stated before delrin machines better than nylatrons.
Also ertacetal is highyly recommended for precision mechanical parts because:
1)Very high stiffness to temperature ratio
2)has great resilience and excellent creep resistance
3)high impact strength at low temps
4)good dimensional stability
Just my thoughts.
Bigwick your are not the only one who has had this problem. Anyone notice that Bandit has completely dropped any nylatron bolts? Ask them why. I'am surprised Spud is still producing bolts from nylatron when they must know about these issues by now. Strange.
Alamo City PB