kiev speed adjustment

[rolleistef]

Hello all,
on my Kiev, the critical 25th speed is way too slow, causing many blurry pics. Since I can't skip that speed which is too useful, I'd like to know if there is a means to increase the shutter speed for slow speeds, even though it obviously went better when I relubed the shutter?

[Xmas]

Stephane

I've made that mistake as well, buy another can of zippo, all the gears that turn need the grease out and the PTFE liquid drip in - or whatever light (thin) oil you can get.

Sorry

Noel
P.S. it is speculative to increase the spring pre tension, with enough Zippo the camera should zing zing at 1/25, there is a risk that the springs may go snap ping. It is best to get 1/10 or 1/5 spot on as the 1/25 will then (normally) be ok.
Un demi de pression helps as well

[rolleistef]

Un demi, un! Ok, will try - just relubed it, but I might think about starting from scratch, I mean, removing the grease from the camera with 90° alcool and then relube it.
will post as soon as it is done!
ty
stef

[Xmas]

The zippo may be more effective that the C2H5OH.
The algorithm is to try and work the fluid into the gear shaft bearing from a dentist pick, operate the shutter several times, zippo fluid into againand again...
Only apply the thin oil when finished with that gear then move to the next.
The shutter module is more easily operated out of the camera if you put the wind knob back.
The big gears that transfer the rotation to the knob through 90 degrees are the worst. The camera should glide as you wind on if you have removed enough grease. Dont forget to zippo the release as well...
Coffee will annoy your nerve system, a half will help, a bottle or two of vin may allow vertical shots with your horizontal hold...
Noel

[Stu W]

Stephane, listen to Noel and use naptha for your cleaning. It's an excellent solvent for lubricants and wont damage the camera. The low speed escapements pretty much run dry. I don't think alcohol will do the job. Stu

[wolves3012]

[quote=rolleistef], removing the grease from the camera with 90° alcool and then relube it.
/quote]
Alcohol is a very inneffective way of removing grease, it'll just congeal it more - use lighter petrol, it's a proper solvent for the grease. Xylene (if you can get it) is better still.

[Xmas]

Stephane
Stu is 100% correct the slow speed escapments are designed to run dry. Alas some cameras have been greased, if they free up when you zippo them it is either debris or grease. The zippo will allow grease to migrate out of the bearing the thin oil (I use PTFE) will mix with the old grease residue before it turns rock hard again. It is a value judgement you should not have to make...
Mr Shearer the Contax man strips completely to remove all foreign material.
My best camera is full of rust!
Noel

[rolleistef]

argh thanks for the slow speed escapement tip, I had generously lubed it... I'll find some naphta! Ahhh just understood : zippo fluid is the petrol you put in the lighter and not petrol for Zippo care...

[Fabrice2]

Ligter fluid is "essence a briquet" in French and it cost less than 2 euros in most drugstores or tobacco shops, and it can last long, it is so effective.Fluid is more eseence than petrole.
Naphta is so hard to find in France.
Alcohol wont works exept for old light seal removals (so as cologne water)

[rolleistef]

ok merci mec :D
j'irai voir demain avant la rentrée
thanks for the advice (and for having compatriots on the forum)

[Xmas]

Oh I'd not smoke or light fires when employing...

Noel

[FrankS]

...and don't inhale or let it touch your skin if you're using Xylene.

[leica M2 fan]

Is the PTFE you refer to "Teflon"? I didn't think that was a light oil. Can you narrow it down for me? TIA.:)

[zorroflores]

PTFE is the reduced name for Polytetrafluoroethylene (http://en.wikipedia.org/wiki/Teflon), a synthetic fluoropolymer (http://en.wikipedia.org/wiki/Fluoropolymer) better know by its commercial name of Teflon. It was discovered accidentally by Roy Plunkett (http://en.wikipedia.org/wiki/Roy_Plunkett) of DuPont (http://en.wikipedia.org/wiki/DuPont) in 1938 and has an extremely low coefficient of friction (http://en.wikipedia.org/wiki/Coefficient_of_friction).
Where used as a lubricant, PTFE significantly reduces friction, wear and energy consumption of moving parts. Versions of Teflon with mineral oil or molybdenum disulfide (http://en.wikipedia.org/wiki/Molybdenum_disulfide) embedded as additional lubricants (http://en.wikipedia.org/wiki/Lubricant) in its matrix are being manufactured.


This is the PTFE refereed by Noel, in particular where the oil is presented in an spray-able form under commercial names as 3 in One Pro and the such.

(information blatantly obtained form Wikkipedia: http://en.wikipedia.org/wiki/Teflon)

[Xmas]

You can get a PTFE liquid Radio shack/Tandy or gun shops in drip applicators or bottles. The gun people use it as a protective. It is not a real oil but (the PTFE) wont outgas like light oils e.g. if you use it for lens iris pivots.

When you zippo a kiev gear only some of the grease willl move and the PTFE will mix with the remainder and may if you are lucky keep the gear ok for some time. It is wide temperature range as well.

It is cheap.

Noel