Pentax 6x7 Help

[StickyShutter]

Looking for C58 spring for the lever and also the film counter black cover I was able to repair a 6x7 (i think) and just need to replace the spring it’s bent so it doesn’t really wind back to place any help appreciated

 

[OAPOli]

My suggestion would be to buy some guitar string of the same gauge of the spring, and bend it around a rod chucked in a hand drill. Use pliers to bend the hooks.

For the cover, a 3d-printed part could work.

 

[Lachlan Young]

Failure of C58 is (from my understanding) often the cause of wind issues in Pentax 6x7/67's - do also check the tension on the feed side, as that gets sticky with time, stressing C58.

 

[StickyShutter]

Failure of C58 is (from my understanding) often the cause of wind issues in Pentax 6x7/67's - do also check the tension on the feed side, as that gets sticky with time, stressing C58.

The tension fills normal it was handled by someone else before it fell into my hands so I may suspect they tried to disassemble

 

[StickyShutter]

My suggestion would be to buy some guitar string of the same gauge of the spring, and bend it around a rod chucked in a hand drill. Use pliers to bend the hooks.

For the cover, a 3d-printed part could work.

I saw that somewhere about using music wire but wasn’t sure how well I would be able to do that anything’s worths a try at this point thank you

 

[Taylor Nankervis]

Disassembling the top winding assembly on the 67 is a bit like unscrambling an egg — tiny pieces spring off and begin a never-ending hide-and-seek. Take it to a professional service facility. The C58 will often be the first sign of brutal wind-on treatment over time — there are right and very wrong ways to wind on this camera (e.g. wind-on in one continuous smooth stroke, with no pauses and never allow the lever to spring back to its home position).

Some repairs to the 67 can be made with TigerTail multistrand fine filament beading wire; it is very find, flexible and strong. This is commonly used today to repair the aperture coupling cord in the Olympus OM4-series cameras which, like the Pentax 6x7 and 67, also use this archaic method of aperture coupling.

 

[StickyShutter]

D

Disassembling the top winding assembly on the 67 is a bit like unscrambling an egg — tiny pieces spring off and begin a never-ending hide-and-seek. Take it to a professional service facility. The C58 will often be the first sign of brutal wind-on treatment over time — there are right and very wrong ways to wind on this camera (e.g. wind-on in one continuous smooth stroke, with no pauses and never allow the lever to spring back to its home position).

Some repairs to the 67 can be made with TigerTail multistrand fine filament beading wire; it is very find, flexible and strong. This is commonly used today to repair the aperture coupling cord in the Olympus OM4-series cameras which, like the Pentax 6x7 and 67, also use this archaic method of aperture coupling.

Do you know know the diameter of the wire I should use I have the old spring still it’s not bend out of shape would you recommend trying to shape it back thanks again for the help

 

[Taylor Nankervis]

TigerTail (more broadly known as 'beading wire') is generally akin to thin fishing line and not often thicker — I have not seen it in thick versions at all over the years. It's possible to (tightly) weave two or three strands — like you would a ponytail — to approximate a more beefed-up width than the very thin wire you start with. Beading wire uses its own very small crimps that do not require specialised tools, just a pair of small needle-nose pliers. The spring is usually discarded when a professional repair is made to this mechanism; as you know, such tiny parts are not available OEM now, so your best bet is to give the spring TLC and tease it back into shape if it is out of whack.