more from the old plinking forum.
taking the Daisy 717 further,
October 7 2006 at 2:38 PM
Score 5.0 (1 person)
fireball (Login randyfb)
Moderator
from IP address 70.65.15.88
here's another method to trigger tune a Daisy 717.
tools are simple.
side cutters and needle nose pliers,
philips screwdriver and small crescent wrench,
cigarette lighter.
springs required.
dynaline #24608 (1/4" x 1 3/8" x 0.020")
door jamb swith for a '96-'98 GM CK pickup (salvage the spring)
from here on out it's a matter of finding the right lengths, the door jamb spring was cut and reclosed @ approx. 7 1/4 turns and the dynaline spring @ approx. 5 turns. the door jamb switch is the most expensive purchase @ around $5 but the housings on these switches commonly break so a good bud in the local GM garage can probably score a handful of broken switches for nada. the dynaline springs will be approx. $3 per package. the real trick is in balancing the springs to get proper valve sealing, this is done by cutting and reclosing the springs until the gun operates properly. there are no performance gains from this modification, just a reduction in pull weight.
start by cutting the springs about a half a turn longer than suggested, the door jamb switch spring replaces the hammer spring (located in the grip frame) and the dynaline spring replaces the valve spring.
the hammer spring replacement is simple remove the pin at the top of the grip frame asm and remove the hammer asm from the frame. swap the springs and reinstall.
next step is to remove the valve stem asm, use your crescent wrench to unthread the stem asm from the valve body.
here you can see the stem asm with the new spring installed. to swap springs carefully spread the retainer clip with your needle nose pliers and separate the stem from the cap, swap springs and reassemble. reclose the retainer clip with your needle nose pliers, becareful if you slip the retainer will go flying.
here you can see the dynaline spring and the remainder from cutting the new spring.
IIRC, this cuts pull weight by over half. it will take a few spring trimmings to get proper balance, major changes are accomplished with the hammer spring and fine tuning with the valve spring. while you're in the gun, it's also a good time to clean up any casting flash on the trigger components and finish the tune off with Don Nygord's trigger tune.
good luck,
