Crosman 1377C american classic question.

[hellsquad]

Hi The cocking bolt/hammer spring mech.

I just got into these, the above is an example of the use of an SSG "spring stop guide" system yes ??
how does it take apart?
is the larger spring suposed to "fill" the gap it occupies? mine is 2mm short ?
the inner small spring over the rod ? WHY, what for??

The only idea is that the outer spring is to short to allow the "half cock" to operate without load ??
Confused
Help
Not like the modern 1377 !!

[Shed tuner]

no, it's not an SSG. Just a different cocking mech.

Shorter mainspring is fine. Small spring to push the knob forwards after cocking IIRC (can't remember just now).

I prefer these to bolt cocking

[HOMER]

The small over cocking rod spring, sets the trigger and iirc also takes hammer pressure from valve stem. The main hammer spring is aboot 32mm long (?) and is shorter than the gap available (@35MM?), the hammer assy I would guess was factory designed as a sealed unit, however access can be gained by milling /filing the rear of the hammer shaft to release the assembly. This is really only necessary if one or both of the aforementioned springs are in need of replacement as the standard unit is more than adequate for the pressure involved. Reassembly can be secured either by tapping / threading or secure welding of the rear hammer shaft stub at the cocking bolt.
HTH
Good luck

[T 20]

The small over cocking rod spring, sets the trigger and iirc also takes hammer pressure from valve stem. The main hammer spring is aboot 32mm long (?) and is shorter than the gap available (@35MM?), the hammer assy I would guess was factory designed as a sealed unit, however access can be gained by milling /filing the rear of the hammer shaft to release the assembly. This is really only necessary if one or both of the aforementioned springs are in need of replacement as the standard unit is more than adequate for the pressure involved. Reassembly can be secured either by tapping / threading or secure welding of the rear hammer shaft stub at the cocking bolt.
HTH
Good luck

Ah not quite --- pulling the knob rearwards sets the trigger and hammer via the larger Spring, the smaller Spring just pushes and holds the knob and its cocking rod forwards after cocking.

If the small Spring wasn't there the knob could hang out the back of the gun when cocked.




All the best Mick

[Shed tuner]

the smaller Spring just pushes and holds the knob and its cocking rod forwards after cocking.

If the small Spring wasn't there the knob could hang out the back of the gun when cocked.




All the best Mick

seems like I did remember that bit correctly

[hellsquad]

Thanks all, all info gleaned has helped a lot, howvere LOL..
SSG I am still on the fence, reason is that the cocking/firing sequence
1 The "sealed" unit can only extened so far untill hammer is free flight hence the short spring. similar to a SSG
2 Hammer then carries on for 2..5mm as the valve stem is hit by the now free flight hammer. Same as a SSG
3 Stem is now free to return with out fighting the hammer "debounced" in effect, same as SSG
There is a tiny amount of pressure left on the stem, but WAY less than if not a restricted spring/hammer unit.
Different to other guns I have as factory, so what are the thoughts?
a halfway house? with a fraction shorter stem it will work as an SSG debouce?

I aquired 3 13XX at once (swaps ) amazing how the transfer ports vary on Crosmans