Friday, August 26, 2011

TOZ-35 Balance

Sunday, August 21, 2011

Make trigger shoe for Hämmerli SP20

One lazy Sunday. I wasted five hours making new aluminum trigger shoe for my Hämmerli SP20 .32 S&W center fire pistol.
Original trigger shoe is ugly and designed for very short finger. And it is made of metal powder (powder metallurgy). It is possible to break it with your finger during trigger pull. Can you imagine – you are during a competition with broken trigger shoe?

Thursday, August 18, 2011

Make a pistol grip - part 8. Final.

This is a final post about how I made a pistol grip.
I trained two weeks with this grip and today I finalized shape and all surfaces.
The first problem was with the equipment measurement box for 25m pistols (300x150x50mm). The pistol was a little bit higher than allowed 50mm (about 54mm). I polished the left part of the grip to fit the measurement box. The right part is untouchable. Remember, if your grip fits fine but doesn’t fit measurement box – cut or polish the left part.
The second problem was 90-degree rule and I had to fix palm shelf angle (1mm).
The final step – polishing. I polished all surfaces with a sandpaper #40. Then took soft cloth and wiped all surfaces with warm water. After the surfaces dried I polished them with sandpaper #100. Then repeated the wiping with warm water and let it dry. Polished all parts once again with sandpaper #220 and wiped them with warm water. Let it dry. Finishing in my case was 100% natural linseed oil (flax seed oil). All parts are twice-coated. Flax oil is proper protection for wood in this case.
The photos are nothing special. Bad light. Wooden pattern shines under sunlight. 

I also promised to make a photo of my two main tools. Stubai firmer-gouge #6 and Stubai chisel 13mm.
 In September-October I will back to electronic trigger for the TOZ-35 free pistol.

Related links:
Make a pistol grip - part 1
Make a pistol grip - part 2
Make a pistol grip - part 3
Make a pistol grip - part 4
Make a pistol grip - part 5
Make a pistol grip - part 6
Make a pistol grip - part 7

Tuesday, August 9, 2011

TsKIB SOO MTs sport pistols

I have already posted some information about MTs 55 free pistol and TsKIB SOO but this time I want to try to cover all sport pistols (except air pistols).

TsKIB SOO is the research bureau of sports and hunting weapons.
The prefix «MTs» coded in the name of a model means «Model of TsKIB».
It is very hard to find any centralized information about MTs pistols and I hope that all dates are right. I will try to contact TsKIB and we will see if we get any official historical information, manuals, photos... something.

Early free pistols series: MTs 2, MTs 2-1, MTs 2-2 and MTs 2-3 (1956).

Early rapid fire pistols series: MTs 1-1, MTs 1-2 and MTs 3-1 «Rekord». All these models were based on the pistol designed by Mikhail Margolin (1906-1975) in 1946-1948.

Later the series of rapid fire pistols got a new breath:
MTs 1-3 (designed in 1974, 97 pistols produced between 1981-1985)
MTs 1-3M
MTs 1-3M2 (designed in 1981, 239 pistols produced between 1981-1990)
MTs 1-5 (1989)
MTs 59-1 ('80s, new design with a magazine before trigger guard)

Late free pistols series:
MTs 55 (1961-1980, 1795 pistols)
MTs 55-1 (1971-1990, 466 pistols)
MTs 55-1M (1981-1990, 514 pistols)

In '80s was designed MTs 57 (MTs 57-1, MTs 57-2). Special model for 25m sport pistol women event.

In 1994-1995 was designed special model for military rapid fire pistol event (CISM) – MTs 440.

Additional information about Margolin’s pistols. One more interesting article about Margolin.

MTs 55-1M manual snippets:
MTs-55-1M User Manual in PDF format for download.