Christian Ramirez-Coll 2 Report post Posted March 31, 2018 Hello everyone, I just want to compile a list of arm post sizes. Please add or correct me when I am wrong: Master Series, Ultra, Shadow, M1: .725 (3/4") 3A, PRO ARM (Titan & Atlas?): .625 (5/8") Flyer, Pilot, Archer, ProVid: .500 (1/2") Thanks. 1 Quote Share this post Link to post Share on other sites
Tom Wills 67 Report post Posted March 31, 2018 A couple of quick corrections/notes: Tiffen "Large" size is actually a shade under 3/4", at around .740" And all of these sizes are nominal - a 5/8" (.625") shaft will likely not fit well, if it fits at all, into a PRO gimbal, because there does need to be some tolerance for the arm post to fit easily into the gimbal handle. I believe the Tiffen sizes tend to be on-size (or a thousandth or two smaller) for the arm posts, and have the few thousandths of tolerance in the gimbal handle, but all of my PRO arm posts are undersized (about .623" from PRO, down to about .621" for some others I've collected). Hope that helps! 1 Quote Share this post Link to post Share on other sites
Christian Ramirez-Coll 2 Report post Posted April 2, 2018 Thank you Tom it does? Quote Share this post Link to post Share on other sites
Jerry Holway 176 Report post Posted April 5, 2018 Arm post for Archer, Pilot, etc. is about .495 -.493 Quote Share this post Link to post Share on other sites
Christian Ramirez-Coll 2 Report post Posted April 5, 2018 Thanks, Jerry, Corrected list: Master Series, Ultra, Shadow, M1: .740 (a shade under 3/4) ??? 3A, PRO ARM (Titan & Atlas?): .621, .623 (a shade under 5/8) Flyer, Pilot, Archer, ProVid: .495, .493 (a shade under 1/2) These leave room for "some tolerance for the arm post to fit easily into the gimbal handle" (Tom Wills) I feel the first number may still be wrong. Should it be lower than .740? Thanks. 1 Quote Share this post Link to post Share on other sites
Jerry Holway 176 Report post Posted April 5, 2018 Tom is correct. .740. Quote Share this post Link to post Share on other sites
Hugo Longtin 3 Report post Posted July 22, 2018 Hi, I have a specific question. Will a G50 arm fit a Pro sled? thanks Quote Share this post Link to post Share on other sites
Jerry Holway 176 Report post Posted July 22, 2018 With the right arm post, of course. Quote Share this post Link to post Share on other sites
Hugo Longtin 3 Report post Posted July 23, 2018 Thanks Jerry Quote Share this post Link to post Share on other sites
steadiz 0 Report post Posted October 2, 2018 WTB: Arm Post- Pro Arm to Flyer LE Quote Share this post Link to post Share on other sites
Rob Turner 0 Report post Posted December 2, 2019 Hey guys, does anyone know the size of the Grub screw that goes in a G50 arm post? Many thanks, Rob Turner Quote Share this post Link to post Share on other sites
Andrea Falcucci 0 Report post Posted June 4 On 3/31/2018 at 6:04 PM, Christian Ramirez-Coll said: 3A, PRO ARM (Titan & Atlas?), Arm X1: .625 (5/8") In case other user will search for this info, also Arm X1 has 0.625 (5/8") arm post. Quote Share this post Link to post Share on other sites
