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MASTER ARM UPGRADE...


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#1 kapil verma

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Posted 04 July 2011 - 02:38 PM

hey guys..is there any company which upgrades arms for stronger springs????..i have a master arm n want to increase the weight load capacity...


regards,
kapz
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#2 Eric Fletcher S.O.C.

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Posted 04 July 2011 - 03:00 PM

I don't think so and I wouldn't do it, that arm structurally isnt designed for a greater load
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#3 Alec Jarnagin SOC

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Posted 04 July 2011 - 04:09 PM

More weight than a Master Arm? That arm takes a pile of weight only surpassed by the PRO arm and G70. I believe it was 63 pounds? I'd mount the arm on a hard mount, and pile on weights to double check its holding up to the range its supposed to. If not, it may have been detuned to lift less weight. Regardless, have Robert Luna take a look at it.
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#4 Brad Olander

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Posted 04 July 2011 - 08:50 PM

If it was detuned, Cinema Products inserted two spacers for lighter loads. (See the black plastic piece in the picture). Remove them, and the arm will have more lift.

It is not difficult, but talking to Robert Luna is a great idea. Don't let the cables twist.

Good luck.

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#5 kapil verma

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Posted 05 July 2011 - 02:55 AM

i recently had a job on panavision platinum(the beast)...the arm just gave upp..it couldnt take the weight of the camera...luckily had only one track back shot,but it felt like the most difficult shot of my life :o ...cnt afford to get a new arm as i just bought this one and a pro 2 sled....is there any way i can change the springs or something??
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#6 kapil verma

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Posted 05 July 2011 - 07:14 AM

guess wht i found...Attached File  _MG_2653.jpg   131.31KB   323 downloads
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#7 kapil verma

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Posted 06 July 2011 - 10:28 AM

If it was detuned, Cinema Products inserted two spacers for lighter loads. (See the black plastic piece in the picture). Remove them, and the arm will have more lift.

It is not difficult, but talking to Robert Luna is a great idea. Don't let the cables twist.

Good luck.


how do i get intouch wit robert luna....
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#8 Alec Jarnagin SOC

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Posted 06 July 2011 - 11:02 AM

Robert Luna
323.938.5659
rluna56@earthlink.net

Note: Robert is of the generation that is not too big on email! Unless he has taken this NEW technology to heart since I owned a Master Arm, you are better off calling him for any timely issues!
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#9 kapil verma

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Posted 06 July 2011 - 12:37 PM

Thanks alec...
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#10 Andrew Ansnick

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Posted 21 October 2011 - 10:37 PM

More weight than a Master Arm? That arm takes a pile of weight only surpassed by the PRO arm and G70. I believe it was 63 pounds? I'd mount the arm on a hard mount, and pile on weights to double check its holding up to the range its supposed to....


I just purchased a Master series arm which was detuned as well but I fixed that....68lbs maxed out :)

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#11 Andrew Ansnick

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Posted 21 October 2011 - 10:54 PM

Thanks alec...


It's a really easy process that you could do yourself. If you want I would be willing to walk you through it.
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#12 Tony Reyes

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Posted 27 February 2012 - 04:22 PM

This thread has been very helpful to me. I'm actually interested in adding those spacers. The minimum weight that my arm carries is 40 lbs (that's with sled, battery, camera, etc.). Upper arm seems to be able to adjust lower but the forearm's adjustment knob is all the way backed out at 40. Does this sound normal? I find that I'm often adding weight to cater to the arm.

Will I have to send my arm to Tiffen to get spacers added? And, what type of weight range (including sled, batts, camera, etc.) would I be looking at with spacers?

Thanks,
Tony
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#13 Andrew Ansnick

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Posted 27 February 2012 - 10:06 PM

This thread has been very helpful to me. I'm actually interested in adding those spacers. The minimum weight that my arm carries is 40 lbs (that's with sled, battery, camera, etc.). Upper arm seems to be able to adjust lower but the forearm's adjustment knob is all the way backed out at 40. Does this sound normal? I find that I'm often adding weight to cater to the arm.

Will I have to send my arm to Tiffen to get spacers added? And, what type of weight range (including sled, batts, camera, etc.) would I be looking at with spacers?

Thanks,
Tony


Tony,

Yes this is pretty much the standard weight range of what your Master Series arm should be able to lift (mine is 43-68lbs when the springs are fully tensioned). No, you don't need to send your arm in to Tiffen to have spacers added.

In fact, you don't really need the spacers (though they are nice to have for an exact reference). Just relax the springs in both arm sections, make sure to do this equally, until you tune it to the range of weight that you need. I recently did an Alexa job where my total weight on the arm was barely 43lbs so I detuned my arm to keep from adding dead weight to my rig and stay in the arm's "butter zone". It's actually quite simple to change the spring tension on your own (DON'T LET THE CABLES TWIST!) and with practice it is something that you will be able to do safely and very efficiently on set.

You can relax the tension on the springs as much or as little as you'd like, but remember you will always be limited to that same 25 lb. (+or-) of adjustment with the knobs.
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#14 Tony Reyes

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Posted 27 February 2012 - 10:58 PM

Aside from the two adjustment knobs there is another way to adjust tension on the knobs? I'm wanting to make the weight range from 30-60 lb. range.
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#15 Andrew Ansnick

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Posted 28 February 2012 - 01:38 AM

Aside from the two adjustment knobs there is another way to adjust tension on the knobs? I'm wanting to make the weight range from 30-60 lb. range.


Hopefully this will help me to clarify. Follow these simple steps and you will be able to dial in any desired amount of lift from about 15-70lbs. Keep in mind the knobs will only be used to fine tune in that 25lb. +/- range.

*NOTE**This adjustment must be done while arm IS NOT under load. Be sure to adjust both arm sections equally (Tip- if you don't have spacers, measure from the base of the bolt head to the spring).

Attached File  masterarm_adjustment.jpg   266.45KB   234 downloads

I highly recommend using a low profile ratcheting hex tool with a 3/16 allen bit for easy access and quick adjustments on set!
LOW PROFILE HEX BIT RATCHET
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