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konvas high-speed


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#1 tomek siatkowski

tomek siatkowski

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Posted 21 February 2007 - 06:14 AM

Hello

i saw threds about konvas running 50 fps is it also possible with standart motor just higher voltage ? is there any custom motor that can run 75 ? it there any shop that can try to make such ?

Thank You

tomek
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#2 Olex Kalynychenko

Olex Kalynychenko
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Posted 21 February 2007 - 03:20 PM

Hello

i saw threds about konvas running 50 fps is it also possible with standart motor just higher voltage ? is there any custom motor that can run 75 ? it there any shop that can try to make such ?

Thank You

tomek


Konvas -1M, Konvas-2M cameras have mechanism with maximum speed of 32 fps.
The special upgraded mechanism ( polishing of axis and parts of transport pin, balancing of counterbalance of shutter disk and other ) can run up to 50 fps with " soft " procedure of acceleration.

From other side, the transport mechanism of Konvs camera have one transport pin only and don't have registration pin.
That's why, this is version of mechanism can lost a some volume of frame stability on high speeds.
The mechanical circuit of mechanism of Konvas camera don't have " fast " version.
Konvas mechanism have friction bearing and bearing can burn on high speed.
That's why, i worry about run of Konvas with speed of 75 fps.

About motor.
If we take 17EP-16APK motor, this is motor have DC motor 12 v 6000 revo and reducer 2:1.
The DC motor must have speed 9000 revo for run of camera with speed of 75 fps.
DC motor have big power reserve, but, 9000 revo high speed for DC motor with maximum speed 6000.

If you wish make a some experiments, you can order of modification of motor on speeds up to 75 fps and order of special upgrade of mechanism.
But, I don't can guarantee of final quality of footages and time of life of mechanism at high speed

If you need high speed camera, i can recommend SKL, TEMP, 35 mm high speed camera with speed up to 150 fps.
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