New triggered guns won’t support heavy hammer springs.
Found out today that the new trigger setup doesn’t work with heavy hammer spring. Something about the striker release setup that causes the barrel to lift when cocked so the breech doesn’t line up with tophat. Took me a few hours of tinkering to figure out what was causing the breech to not line up with top hat when cocked.
I had my .257 valve, 13 lb spring, hammer, breech, and valve setup in a new condor. Breech was pain to figure out and I ended up removing the auto piece so safety is now manual. Something is definitely different because the slot on the breech for the striker release has to be twice as long for it
I swapped things around and everything works perfect if you just put the stock hammer spring in. I ended up putting in the 9.4 lb hammer spring and not preloading hammer past pw 4 to keep the misalignment to a minimum. It also limited power to around
950 fps with 28″ barrel on 2600-2700 psi.
Doug
All Replies
Viewing 10 replies - 1 through 10 (of 10 total)
Are you telling that new spinloc rifles do not support heaviers springs?
So do you recommend standard version with old trigger (the one with red safe) for get tunned?
How about a frame rider with needle bearings? How cool would that be!?
Luckily my old school frame arrived today too so I am dicking around with tearing down and building guns instead of shooting.
Seems that it wouldn’t hurt to at least TRY a frame rider. They can sometimes chatter going down the tube when fired, but there should be NO deflection.
Knife
UPDATE:
Somewhere else I had posted that I thought to have resolved this issue. I had spent a bunch of time hand fitting polishing and fine tuning the whole works. Most attention given to trigger components and striker realease. This seemed to help alot with a medium weighted spring that was marginal before spending time with it. I finally obtained a heavier dyatot .257 correct spring and it is still having the issue . Somewhat of a lesser eextent but still exerting lateral upward forced upon the breech end of the barrel. I can notice up to about as much as .010″ deflection of flex occuring upon end of the breech side of the barrel. This flex or spring on the barrel surely isnt very good for accuracy and I ponder what type of damage might occur if it continues. I already am worried that this has taken a bit of a set and warp to my barrel. I tried dial indicating my barrel a while back, just a quicky half ass setup in my three jaw cuck on the lathe. It appeared like it might have had some run out but it was tough to say how accurate my harbor frieght indicator is and how much runout my unleveled lathe has in the headstock and my lack of any real machinist experience. But so far the new trigger striker release is flexing the barrel riding hammer and surely induces a motion upon the barrel similiar to a diving board as it is unsprung!
I must have this sucker set on fully automatic. (Rock and roll), it double posted. LOL!!!
Man, that’s a bummer! Does seem that a non bbl. riding hammer might work, as it wouldn’t allow, (or cause) the bbl. to ride up at all. As it isn’t in contact with the bbl.
Which reminds me. I need a slightly heavier spring. Any thoughts Doug. I am still using the 9 lb. spring that I got from you.
Knife
That was with barrel riding. I don’t trust a regular hammer with 13lb hammer spring for miss fire. Plus for .257 I have found 120 gram hammer works good.
Something about the trigger setup is different and let’s the barrel ride up the striker release. Old trigger has no effect with 13 lb spring. I have even used a 15 lb and Cygnus was using 20+ when he made 600 fpe.
I have been thinking of a better way for the trigger to hold the hammer. Will have to redo the striker release and hammer. Hammer will have a groove that the striker will catch the hammer instead of trying to stop it.
Doug,
Did you try a standard or barrel riding hammer? Not sure it would make a difference but seems like a barrel rider might give more deflection.
Good info thanks for the heads up.
Viewing 10 replies - 1 through 10 (of 10 total)
- You must be logged in to reply to this topic.
I haven’t tried it since I made a new hammer that rides in the frame instead of on the barrel.