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Speed limit of an Eclair NPR


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#1 Brian Rose

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Posted 11 September 2006 - 07:01 PM

All,
I just got a tobin milliframe unit to do some high and low speed photography with my Eclair. I was wondering if you all knew what the celing for film speed is for the Eclair? I had heard it was 75fps, and I wasn't planning on pushing it past 64 FSP. Any ideas? Thanks!
Brian R.
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#2 Bernie O'Doherty

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Posted 11 September 2006 - 08:52 PM

Hi, Brian,

Keep your fingers crossed that the claw spring tension is at at least 45g per sq. cm. If it is, you can run that sucker at 75fps. If it isn't, the claw tip might damage the magazine pressure plate channel. You can check the tension by magic markering the recessed claw channel on the magazine. Load up the mag and try it at 75 frames for a short burst. If the claw is problematic, you will scrape some of the magic marker away; otherwise you're good to go.

Cheers,
Bernie
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#3 David Sweetman

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Posted 11 September 2006 - 09:09 PM

terminal velocity: Posted Image
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#4 Brian Rose

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Posted 11 September 2006 - 10:24 PM

Bernie,
Thanks for the tip. I tried it, and ran the camera at 75fps. The function sounded good and steady, albeit a bit noisier. I checked the mag, and couldn't detect any visible marks. Now, should I be looking for scrapes on the edges of the channel, or at the bottom of the recession? Thanks!
Brian R.
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#5 Bernie O'Doherty

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Posted 12 September 2006 - 07:21 AM

Hi, Brian,

Check in both places for scrapes. If your claw isn't centered properly, you will have side scrapes; if it is centered and protruding too far on high speed, you will see scrapes on the bottom of the channel.

Don't worry about these scrapes--they can be polished out easily by any good technician.

Cheers,
Bernie
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