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How do you hand crank a bolex


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#1 grantsmith

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Posted 07 June 2006 - 02:05 PM

Hi,

I have an old bolex (pre-reflex). I'm looking to hand rank it to get a silent film look (I'm also going to home develop).

All I seem to be able to do is make the winding handle fall off.

What am I doing wrong as I know (some) bolex camera's can be hand cranked?

Is it just later models or am I missing something really obvious?

Thanks for your help as always
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#2 Clive Tobin

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Posted 07 June 2006 - 11:07 PM

I have an old bolex (pre-reflex). I'm looking to hand rank it to get a silent film look ...


You need the hand crank (rewind crank) accessory. It fits in the 8-frame shaft.

To use it, you would disconnect the spring motor by turning from MOT to O, put it on lock run, unscrew the spring winding handle (strictly speaking this isn't required but it partly gets in the way), and crank away in the opposite direction than the engraved arrow says. (The arrow direction is for back-winding the film for doing double exposures etc.)

If you want the speed to be erratic, turn the governor dial to 64 so it will not help you keep a smooth speed. Or if you want the speed to be reasonably uniform, set the governor to the speed you want and crank fast and hard enough that you feel an increased resistance. The rewind crank is 8 frames per turn so for 24 FPS that is 3 turns per second.

Note that the rewind crank was made in two sizes, for 3mm and 4mm shafts. Make sure you order the right one or it won't fit.
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#3 Dan Salzmann

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Posted 08 June 2006 - 05:06 AM

I remember trying to do this and found the Bolex crank to be way too tiny for extended handcranking.
The hancrank I guess was designed more for rewinding for in-camera dissolves than for continuous handcranking. Perhaps a machinist could make a bigger handcrank.
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#4 grantsmith

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Posted 08 June 2006 - 05:59 AM

thanks guys. much appreciated
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Metropolis Post

Technodolly

Gamma Ray Digital Inc

Abel Cine

Ritter Battery

FJS International, LLC

Media Blackout - Custom Cables and AKS