Shawn Adams Posted January 4, 2018 Report Share Posted January 4, 2018 Just curious if anyone can anyone tell me the difference between a 3A and EFP arm? I have an EFP arm and I have not shot with a 3A for a long time, but looking at pictures, they seem almost identical, except for a few drilled holes and sone slightly different elbows, etc... The 3A has a cable or spring end that comes out of each arm, screwed to the side of the arm with a bracket, but otherwise they seem pretty similar. Quote Link to comment Share on other sites More sharing options...
Moderators Alec Jarnagin SOC Posted January 5, 2018 Moderators Report Share Posted January 5, 2018 Shawn, The EFP and 3a arm are fundamentally the same design. Both arms evolved so you may see slight differences in the way they are configured even between their own "category", but the only real difference is the springs. The 3a had beefier springs that allow for more weight. The nature of these arms meant they didn't like functioning at their lowest weight setting, so the EFP was a better choice for light set-ups and the 3a for heavy set-ups. If you search the forum you can probably find the weight range charts for both arms. 1 Quote Link to comment Share on other sites More sharing options...
Shawn Adams Posted January 5, 2018 Author Report Share Posted January 5, 2018 That's pretty much what I thought... Thanks for the reply. Quote Link to comment Share on other sites More sharing options...
Moderators Louis Puli SOC Posted January 5, 2018 Moderators Report Share Posted January 5, 2018 Hi Alex and Shawn Here it is the full Tiffen range . Quote Link to comment Share on other sites More sharing options...
Shawn Adams Posted January 10, 2018 Author Report Share Posted January 10, 2018 (edited) great list. I wonder why the Provid and the 3A are not in there. Edited January 10, 2018 by Shawn Adams Quote Link to comment Share on other sites More sharing options...
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