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New trick for G-70 arms


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#1 Jerry Holway

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Posted 28 May 2009 - 03:29 PM

All-

For G-70 owners: an idea popped up at the SOA workshop to extend the horizontal range of the arm.

Based on Chris Fawcett’s idea for his G-50 arm (which works wonders by itself), we removed the small block that restricts the male socket block’s travel against the torsion spring. For the G-70 arm, we also changed the “kick-back” link into a “kick forward” link.

The combination (as seen in the photos) has the effect of extending the range of arm movement to the left (normal operating) and the same extended range of movement to the right as we had with the old kick-back link.

The only trick is that it requires a slightly new technique to insert the male socket block into the female one on the vest – as the block that keeps everything in a straight line is removed. Small learning curve.

The other benefit of the technique (both for the G-50 and G-70) is that the arm does not bang against the block anymore when running.

Three photos illustrate how the arm moves relative to the socket block.

Jerry

Sled way to the right, arm links fold out of the way
Attached File  kick_fwd_link_1.jpg   72.32KB   476 downloads

"normal operating position"
Attached File  kick_fwd_link_2.jpg   77.31KB   392 downloads

Sled way to the left - extended reach
Attached File  kick_fwd_link_3.jpg   44.52KB   343 downloads
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#2 Guido Lux

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Posted 28 May 2009 - 04:35 PM

Hi Jerry!

Long time no hear!! Hope you are well!?
Sounds like the upgrade we all want! Now, how do I get the upgrade?

All the best,

Guido
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#3 Jerry Holway

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Posted 28 May 2009 - 04:49 PM

Hi Jerry!

Long time no hear!! Hope you are well!?
Sounds like the upgrade we all want! Now, how do I get the upgrade?

All the best,

Guido


Guido-

If you have a G-70, just remove the small block and reverse the normal kick-back link into a kick forward one (like one does for going goofy and back). Nothing to buy, just something to remove.

The technique will also work for other arms - it started with the G-50 and Chris Fawcett but the part works the same on all arms. Won't help with reach across the body, but will improve how arms folds out of the way when working to the right (normal) or left (when goofy/arm attaches on the left).

BTW, all good, book doing well. In LA next week for Tiffen party, CineGear...

Jerry
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#4 luis castro

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Posted 29 May 2009 - 05:29 AM

hi jerry what Gimbal is that ? this is the photo
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#5 Jerry Holway

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Posted 29 May 2009 - 08:50 AM

hi jerry what Gimbal is that ? this is the photo


Luis-

It's the Ultra2 gimbal. The stage motor transmitter was removed for charging, (and the filler piece not installed) - hence the flat you see in the photo.

Jerry
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#6 luis castro

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Posted 30 May 2009 - 02:22 AM

hi jerry what Gimbal is that ? this is the photo


Luis-

It's the Ultra2 gimbal. The stage motor transmitter was removed for charging, (and the filler piece not installed) - hence the flat you see in the photo.

Jerry



thank so much my teacher malibu 99
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