Bat DS firing pin spring

[coyotechet]

Bat Firing PIn Spring
Called BAT Machine ordered new firing pin springs for my Bat DS. Got them today way different.

Old spring
length 5.140
O.D. .407
I.D. .285
wire Dia. .065

New spring
Length 6.656
O.D. .407
I.D. .290
Wire Dia. .055

Real P.I.A. to install being over 1½ longer. So I went to the lathe to help me install the spring making it very easy. I first chucked up a piece of ½ inch round stock, then drilled a .070 hole 1.000 inch in depth, then with a .177 drill drilled the hole .700 deep, then using a 7/16 drill, drilled the hole .225 deep. Inserted the pin and with a live center in the tail stock, I compressed the spring and bolt shroud using the tail stock and turned the shroud and cocking piece buy hand. Very easy fast and safe.
Chet
P.S. going to call Bat in the morning to be sure I was sent the correct spring.

 

[Michael Huebner]

Bat springs

Bat Firing PIn Spring
Called BAT Machine ordered new firing pin springs for my Bat DS. Got them today way different.

Old spring
length 5.140
O.D. .407
I.D. .285
wire Dia. .065

New spring
Length 6.656
O.D. .407
I.D. .290
Wire Dia. .055

Real P.I.A. to install being over 1½ longer. So I went to the lathe to help me install the spring making it very easy. I first chucked up a piece of ½ inch round stock, then drilled a .070 hole 1.000 inch in depth, then with a .177 drill drilled the hole .700 deep, then using a 7/16 drill, drilled the hole .225 deep. Inserted the pin and with a live center in the tail stock, I compressed the spring and bolt shroud using the tail stock and turned the shroud and cocking piece buy hand. Very easy fast and safe.
Chet
P.S. going to call Bat in the morning to be sure I was sent the correct spring.

View attachment 23847View attachment 23848View attachment 23849View attachment 23850

Chet,

The BAT has two springs available for the new .280 pin.
A light and a heavy
The info I have is (I measured from what I received)

Bat Heavy Spring #25lb
Free Length = 5.425”
Outside Diameter = 0.416
Inner Diameter = 0.294
Wire Diameter = 0.061
No. Of Active Coils = 41
No. Of Coils = 43

Bat Light Spring# 22lb
Free Length = 6.9”
Outside Diameter = 0.403
Inner Diameter = 0.294
Wire Diameter = 0.0545
No. Of Active Coils = 46
No. Of Coils = 48

Photo shows both of the springs

Which diameter pin are you using?

I am sure they guys at BAT will sort you out

Michael

 

[DSM]

You want the light one.