Re: [Frameworks] K3 crank modifications?

[Sheri Wills]

Thanks so much for the responses! Bernd, I really empathize with your 
experience of the phantom eBay auction.

David - great idea! And it sounds extremely elegant, compared to what I was 
about to try (vice grips).

Sheri

> On Nov 1, 2015, at 6:08 PM, Dave Tetzlaff  wrote:
> 
> Yup. K3s are REALLY hard to crank. 
> 
>> Has anyone developed a modification to get a better grip and/or leverage 
>> when cranking the K3??
> 
> I don't think a better grip would help much. It's basically a leverage 
> problem. The spring is stiff, and the little crank is close to the center 
> axis: compare to a Bolex crank which folds out several inches from the axis 
> giving a lot more leverage. 
> 
> I don't know if there was ever a manufactured product to help crank a K3.
> 
> I does seem to me it would be easy enough to fabricate or jury rig an 
> extension that slips over the crank wings in the 'up' position, and has a 
> spinning knob on the end. I'd probably:
> 
> Go to the hardware / building-supple store and get some aluminum c-channel, 
> e.g. http://tinyurl.com/pxp2lze. 
> 
> Cut two pieces about a foot long.
> 
> Screw them together back to back, spaced apart with washers so the gap is 
> wide enough to fit over the K3 crank, with 4 stainless steel machine screws 
> and nylon insert lock nuts, two on each end. 
> 
> On the crank end they be just far enough apart so the slot fits over the 
> crank. Closer together on the knob end. 
> 
> Then use a drill to make a wider hole in the gap on the crank end, for a #8 
> or #10 machine screw. Whatever you'd use as a knob would rotate freely around 
> a screw long enough to go through it and the extension, top to bottom, with 
> locknuts between knob and extension, and below extension, holding it on.  
> 
> Don't know if that makes sense w/o pictures, and there might be more simple 
> or elegant means to do the same thing, but that's all I can think of at the 
> moment...
> 
> 
> ___
> FrameWorks mailing list
> FrameWorks@jonasmekasfilms.com
> https://mailman-mail5.webfaction.com/listinfo/frameworks

___
FrameWorks mailing list
FrameWorks@jonasmekasfilms.com
https://mailman-mail5.webfaction.com/listinfo/frameworks

[Frameworks] K3 crank modifications?

[Sheri Wills]

Hello Frameworkers,

I recently added a K3 to my little bank of 16mm cameras, and I’m having a hell 
of a time cranking it. There’s nothing wrong with the camera - it’s in great 
shape. 

Has anyone developed a modification to get a better grip and/or leverage when 
cranking the K3??

Many thanks in advance,
Sheri
___
FrameWorks mailing list
FrameWorks@jonasmekasfilms.com
https://mailman-mail5.webfaction.com/listinfo/frameworks