Max EFP gimbal Capacity?
Posted 19 February 2009 - 04:05 PM
Posted 19 February 2009 - 08:23 PM
Could someone please tell me how much can the EFP gimbal can handle?
Good Question . . . . ?
I flew a BL-4 and was seriously worried
Posted 20 February 2009 - 10:31 AM
That's mean ..? how many Kg ? thanks for your help...
Posted 22 February 2009 - 05:49 AM
Here are some pictures
Edited by Niko Lasarte, 22 February 2009 - 05:51 AM.
Posted 22 February 2009 - 08:37 AM
Wow... You are pushing your luck...
The fact that you can, doesn't mean you should. You can rev your engine up to 9000 RPM... do that for several hours and your engine will be toast. Every time you stress material to it's limit you are weakening the structure and one day it will blow up in your face.
The EFP was designed for Video cameras ONLY. That's what the name stands for EFP (Electronic Field Production). A lot of time and thought went into detuning the parts from the 3A (which most parts originated) and make it non upgradeable. At that time the established Ops were wiry of new guys getting in the business for half the price. The only available steadicam at that time was the 3A that started at $42'000.- the EFP started at $23'500.- (1990 price list) and was non upgradeable with Blue springs. You were able to buy "spare arms" but only with the spring color you already owned.
The 3A gimbal and the EFP gimbal look the same exempt the "hole" in the fork. But the 3A is machined versus the EFP that was cast. The early EFP arms (Blue Springs) had a Camera payload of 12 to 24 lbs. as the later models (Black Springs) had a total payload of 24 to 39 lbs. The 3A Gold arm came from the factory and topped out at 57 lbs. That weight is reflected in the way the 3A gimbal was made. So make no mistake, CP didn't meant to make the EFP be capable to handle anywhere close to it's top model and that was on purpose. Want more performance, dig deeper in your pockets.
Now almost 20 years later... the units are still around, have been abused for decades, have tons of hair fractures and new ops with there tight money conscience go and throw a 535 on top of it... You wouldn't just drop a 600 horse power engine into a rusty pinto, would you? But that's what you are doing.
The EFP is the equal of a ProVid or now an Archer... that's basically what you are using and ad 20 years of abuse...
Good Luck, you will need it.
Posted 22 February 2009 - 10:23 AM
First of all I apologize for my mistakes in my English
I will try to give my opinion the best I could
I'm not saying that I was relax in that shooting. Charles King was asking how much weight can carry the EFP Gimbal so I wanted him to see it is possible to carry a 535 or BL, if the equipment is in good condition, of course. Of course I am aware that the engine was at 100% but when a person bet some times you have to run the risk. I think the EFP was built very well designed for video productions, but with ample room to work in film productions, talking about the sled, not arm or vest. So I can not compare with Provid.
I assure you that Im looking forward to have competitive sled film!
Posted 22 February 2009 - 04:15 PM
I'm also not an english speaker.
I'm just saying...
You upgraded your Arm and Vest and did obvious mods to your rig but you are using a Video Gimbal... that is rated for a max of 39 lbs (17.5 kg) but you have an arm that will carry up to 72 lbs (32.5 kg) you see what I'm getting at?
Just be careful because somethings gotta give... and it's always the weakest link... in this picture it's your gimbal. It's cast so it will, one day in the near future, just snap... so don't be surprised.
Again the fact that you can shouldn't mean you should.
Just my 2 cents... good luck (and I mean it).
Posted 22 February 2009 - 04:48 PM
in addition to stress on the gimbal watch yourself as well -- those are heavy cameras you are schlepping! But with the nice looking cable pullers you might be able to fly a bit longer!
Posted 23 February 2009 - 03:04 AM
Posted 23 February 2009 - 05:06 AM
39 lbs is the total payload that the original EFP arm was rated at. So as usual add the fail safe buffer and you reach the breaking point. (FYI: the 3A arm and the EFP arm are virtually the same unit the same parts, etc. The only difference was the spring capacity, Black versus Gold... not so with the Gimbal which was weaker on purpose).... so:
It's rated for 39 lbs (17.5 Kilogramm)
Posted 24 February 2009 - 12:10 PM
Thank u kindly Erwin
And for the record, the BL I flew was only for one shot that lasted about a minute , thank god to never do that again, I'm video all the time.
And lastly, everything has been upgraded on my rig now including the gimbal
Posted 28 February 2009 - 03:48 AM
It was a fantastic light weight rig that did OK with bigger cameras when it had to. I also agree with Erwin...don't make a habit out of it if your flying a stock rig (which I did not) but it was OK once in a while since I had all the upgrades including gold spring arm. Even with the new gimbal it was a bit uncomfortable sometimes going to a horizontal balance position with a Sony F900 for example. Just sort of scary. That said, it made for an incredible light weight live show/concert type rig. I loved that thing. It was actually the first sled I ever flew back in 1993 when I started.
If anyone has specific questions don't hesitate to contact me. Glad to share the info...