Jump to content
flavio filho

Bolex Rex-5 Spring Mechanism

Recommended Posts

Hi everybody.

 

I got a Bolex 16mm Rex-5 fully overhauled, and will still run a test to see how it goes.

 

But I was playing with it (and running at 12fps without film, of course).

And wondering how many rounds would be the "normal" to wind a Rex-5 model?

The Rex-5 I have I wind it 18 full rounds until I fell it getting hard to wind. Then I stop.

 

But I've read somewhere that the "NORMAL" to spin it 11 times and that is enought to run around 25 seconds.

Anyway, maybe was another H16 and not exactly a Rex-5 that I saw?

 

Is there any difference between how many rounds you have to wind on different Bolex models?

 

Thanks in advance,

Flavio

Edited by flavio filho

Share this post


Link to post
Share on other sites

All the Bolex H cameras have a distinct stop in the wind and in the unwind direction. It looks like you got one which somebody removed the spring star from. That stop starwheel sits on the spring housing. An H runs for about 27 seconds at speed 24.

Edited by Simon Wyss

Share this post


Link to post
Share on other sites

A H16 should take 21 turns of the winding crank to fully wind the spring.

It should come to hard stop when fully wound.

Otherwise it is not adjusted properly.

 

Cheers,

Jean-Louis

Share this post


Link to post
Share on other sites

A H16 should take 21 turns of the winding crank to fully wind the spring.

It should come to hard stop when fully wound.

Otherwise it is not adjusted properly.

 

Cheers,

Jean-Louis

 

 

Great, Jean, Louis.,

I've counted properly, and it is actually 21,5 turns. :P

Is that OK?

 

Thanks,

 

Flavio

Share this post


Link to post
Share on other sites

My Rx5 takes 21 winds. I'm actually in the habit of mentally counting off the winds when doing a full wind between shots. If shooting something unscripted where time is of the essence between shots, and I'm trying not to miss anything important, I wind really fast. Helps to know when I get near the end of winding so that I don't hit it the end point too forcefully.

Share this post


Link to post
Share on other sites

My Rx5 takes 21 winds. I'm actually in the habit of mentally counting off the winds when doing a full wind between shots. If shooting something unscripted where time is of the essence between shots, and I'm trying not to miss anything important, I wind really fast. Helps to know when I get near the end of winding so that I don't hit it the end point too forcefully.

 

Yeh, but hang on - if you can count 21 that means you hit the end of a wind, which is what you're trying to avoid in the first place huh.gif

 

Do you use the footage counters ?

 

I know what you mean by hitting the stop while at full throttle winding ! feels like you're about to rip off the crank - a lot sturdier than they look huh... I got a feel for the cameras, and learned to be able to maintain a conversation while I did it, but to begin with it was like replacing the ball and shot in these pics with the winding crank:

 

funny-sports-faces-63.jpg

 

 

129196801874708734.gif

Share this post


Link to post
Share on other sites

Haha! Cool...

 

The Bolex Rex-5 rocks, isn't it?

 

I remember once with my first Bolex Rex-5, I forgot to unlock from O to MOT. Then I winded in a while, felt was too hard... then I unlocked and notice how stupid I was...

Luckly never felt anything wrong with the camera... and never forgot to unlock it. Not sure but maybe this could cause serious damage or "unbalance" the cameras on shooting?

 

I'm not too much experienced on Spring Cameras, but I can say I do love the little bastards, and the REX 5 is for sure the BEST of them.

 

Another thing if you might be able to help, please:

I was looking for ADAPTOR RINGS to put another lenses on the C-MOUNT of my REX-5...

 

- I believe there's some C-Mount > Arri STD Lens... But not sure about the NIKON lenses? Am looking on the web. But so far I've found only one..

- Do you guys know of best Adaptors for Arri STD Lens, and Nikon 35mm Lenses? I'm looking forward to use my Arri Std, and rent some Nikon 35mmto to shoot something.

 

Thanks, guys. ;)

F

Share this post


Link to post
Share on other sites

Haha! Cool...

 

The Bolex Rex-5 rocks, isn't it?

 

I remember once with my first Bolex Rex-5, I forgot to unlock from O to MOT. Then I winded in a while, felt was too hard... then I unlocked and notice how stupid I was...

Luckly never felt anything wrong with the camera... and never forgot to unlock it. Not sure but maybe this could cause serious damage or "unbalance" the cameras on shooting?

 

I'm not too much experienced on Spring Cameras, but I can say I do love the little bastards, and the REX 5 is for sure the BEST of them.

 

Another thing if you might be able to help, please:

I was looking for ADAPTOR RINGS to put another lenses on the C-MOUNT of my REX-5...

 

- I believe there's some C-Mount > Arri STD Lens... But not sure about the NIKON lenses? Am looking on the web. But so far I've found only one..

- Do you guys know of best Adaptors for Arri STD Lens, and Nikon 35mm Lenses? I'm looking forward to use my Arri Std, and rent some Nikon 35mmto to shoot something.

 

Thanks, guys. ;)

F

Share this post


Link to post
Share on other sites

Yeh, but hang on - if you can count 21 that means you hit the end of a wind, which is what you're trying to avoid in the first place huh.gif

 

Do you use the footage counters ?

 

I know what you mean by hitting the stop while at full throttle winding ! feels like you're about to rip off the crank - a lot sturdier than they look huh... I got a feel for the cameras, and learned to be able to maintain a conversation while I did it, but to begin with it was like replacing the ball and shot in these pics with the winding crank:

 

 

Well yeah, I guess most people would try to avoid hitting the end of a wind. I don't try to avoid it if I have a shot that goes for 25 seconds that I hope is worth burning film for though! Also if there's not time between shorter shots to re-crank the wind arm, then I'll often hit the end of a wind. This is for unscripted stuff. Footage counter, yeah I keep an eye on that. The frame counter, not so much.

 

They are sturdy, but I'm still a little cautious. I completely stripped the winding crank's threaded hole on an early model Bolex when I tried to give it a wind. I had bought it off Ebay on a whim. I think I gave it a few winds, it would not run, so I tried to wind a bit more, and pop! I did not force it too hard. Really.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



  • FJS International



    Glidecam



    Paralinx LLC



    Ritter Battery



    Abel Cine



    Visual Products



    Wooden Camera



    Just Cinema Gear



    Serious Gear



    CineLab



    Tai Audio



    Media Blackout - Custom Cables and AKS



    G-Force Grips



    New Pro Video - New and Used Equipment



    Metropolis Post



    Broadcast Solutions Inc



    Rig Wheels Passport



    Gamma Ray Digital Inc


×
×
  • Create New...