Capotec2015 Posted August 30, 2018 Share Posted August 30, 2018 HI, I wasnt going to post this as I thought it might be a bit of a daft question but its bugging me. On my setup I have the swing arms with holes and in one of the holes there is the D-shackle. Attached to that there is a kind of loop of double thickness webbing and connected to that is the carabiner. So, if the d-shackle was to snap -the entire connection to that side of the wing is gone. An unlikely scenario I would imagine but I wondered how strong the shackles were. Its the ones that came the motor. I haven't changed anything. The carabiner has a rating thats printed on it and I know the webbing will be strong - but I just wondered how strong. What can the webbing take and what can the d-shackle take in terms of pounds/kilos before failure? If someone either knows or can hazard an educated guess, it would be most welcome. thanks Quote Link to comment Share on other sites More sharing options...
AndyB Posted August 30, 2018 Share Posted August 30, 2018 The shackle can hold a small car. Quote Link to comment Share on other sites More sharing options...
noddyc Posted August 31, 2018 Share Posted August 31, 2018 From a standard datasheet on D-shakles Different grade of material will change the out came as well as the way in witch the loading is attatched to the shackle 6mm bolt diameter on shackle Working load 0.33 ton Safety factor 1:6 Quote Link to comment Share on other sites More sharing options...
AndyB Posted August 31, 2018 Share Posted August 31, 2018 I thought from his description he meant the carabiner...... Quote Link to comment Share on other sites More sharing options...
Capotec2015 Posted August 31, 2018 Author Share Posted August 31, 2018 Hi -thanks for the responses. Forgive my wording....It was specifically the D Shackle and also if poss a rough guess at the webbing -its tough stuff by the feel of it.... The carabiner already has the K/N on it and as you say Andy, it can hold a lot. There should be a picture attached now -I need to get some lock wire for the bolt -but a quick measure of it show that its 6mm Quote Link to comment Share on other sites More sharing options...
AndyB Posted August 31, 2018 Share Posted August 31, 2018 It looks like if the D shackle fails, then the carabiner is held on only by the stitching across the webbing..then if the stitching comes undone the carabiner is free? Quote Link to comment Share on other sites More sharing options...
Capotec2015 Posted August 31, 2018 Author Share Posted August 31, 2018 Is the webbing usually nylon? Been looking at both polyprop and nylon webbing strengths - According to a Google search: The break strength of a webbing material is the maximum stress or load that can be applied to the fabric before failure or it breaks. Polypropylene has a break strength of 700 pounds, Nylon is 2,500 to 7,000 pounds and Polyester is 2,000 to 10,000 pounds.15 Jan 2015 ... I think either way that there is a good amount of strength from carabiner to swing arm, looking at the third of a ton on the shackle, 20 odd K/N (320 stone - I know I have put on a bit of weight but l should be fine with these carabiners..) in the carabiner and the triple webbing . Quote Link to comment Share on other sites More sharing options...
admin (Simon W) Posted August 31, 2018 Share Posted August 31, 2018 Am I correct in thinking that this is an older PAP or HE machine? SW Quote Link to comment Share on other sites More sharing options...
Capotec2015 Posted August 31, 2018 Author Share Posted August 31, 2018 No, its not a PAP or HE.......not giving you any clues....fancy another go? Quote Link to comment Share on other sites More sharing options...
cas_whitmore Posted August 31, 2018 Share Posted August 31, 2018 If there’s a choice ‘I’d like to have a bow shackle so the bolt pin was shorter. cas . Quote Link to comment Share on other sites More sharing options...
P Jarvis Posted September 4, 2018 Share Posted September 4, 2018 More importantly a key ring or lock wire through the shakle pin hole and the shackle to stop the pin falling out !! Quote Link to comment Share on other sites More sharing options...
Capotec2015 Posted September 4, 2018 Author Share Posted September 4, 2018 Absolutely - I mention lock wire in my second comment...a job which I will do today! thanks for reminding me. Quote Link to comment Share on other sites More sharing options...
frosty100 Posted September 4, 2018 Share Posted September 4, 2018 Mine are locked with aircraft grade s/s doubled up. you could use tiny zippers but wire is deffo best. Quote Link to comment Share on other sites More sharing options...
Tunny Posted September 13, 2018 Share Posted September 13, 2018 I have the same set up on mine But I do have 2 D shackles coming from the nylon loop to the holes on the swing arm and I do believe the nylon will hold a ton plus Quote Link to comment Share on other sites More sharing options...
Capotec2015 Posted September 13, 2018 Author Share Posted September 13, 2018 Thanks Tunny. From D shackle to wing, I think the connections will be fine. I am a novice, learning and its really good to be able to turn to a bunch of like minded, more experienced pilots for advice. Quote Link to comment Share on other sites More sharing options...
Shaun Favell Posted August 29, 2022 Share Posted August 29, 2022 On 31/08/2018 at 20:26, Capotec2015 said: No, its not a PAP or HE.......not giving you any clues....fancy another go? What is it? It looks the same as a Paramotor I own, I’m trying to identify the make. Quote Link to comment Share on other sites More sharing options...
Abaatabit Posted September 15, 2022 Share Posted September 15, 2022 On 31/08/2018 at 17:47, AndyB said: It looks like if the D shackle fails, then the carabiner is held on only by the stitching across the webbing..then if the stitching comes undone the carabiner is free? Use a key ring to lock the shackle bolt Quote Link to comment Share on other sites More sharing options...
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