Helibilly Posted September 23, 2023 Share Posted September 23, 2023 Hi, As all the linkage rods on my Raptor 50 are 2mm dia, I thought I would change them to Stainless. What I have found is that although the rods are 2mm, the max diameter of the thread is 2.2mm. How are these rods threaded to get them a larger diameter than the rod itself? All I can think of is that they are put in a threaded clamp of some sort and the thread is pressed in. That is the only way I can see a thread being created without losing metal in the process and making the thread diameter larger than the rod itself. Can anyone tell me how the thread is done on the link rods? Quote Link to comment Share on other sites More sharing options...
Rich Griff Posted September 23, 2023 Share Posted September 23, 2023 Rolled Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted September 23, 2023 Share Posted September 23, 2023 47 minutes ago, Rich Griff said: Rolled What does that mean? Quote Link to comment Share on other sites More sharing options...
Ace Posted September 23, 2023 Share Posted September 23, 2023 Rolling vs cut Quote Link to comment Share on other sites More sharing options...
Engine Doctor Posted September 23, 2023 Share Posted September 23, 2023 1 hour ago, EarlyBird said: What does that mean? It means the wire is passed between two spinning rollers , I think they are called dies with a poistive thread on them . These then rotate at high speed an pressure and as the wire passes through the thread is formed as the diespress into the wire. No cutting as in taps or dies just pressure is used hence the metal rises up into the dies making it 5hicker that the original rod. To cut a 2mm thread conventionally with a die you will need to start off with approx 2.5mm rod. Quote Link to comment Share on other sites More sharing options...
Rich Griff Posted September 23, 2023 Share Posted September 23, 2023 Work hardening takes place as a result. Quote Link to comment Share on other sites More sharing options...
Helibilly Posted September 23, 2023 Author Share Posted September 23, 2023 Thanks for all the replies. I should have realised they were rolled. I knew there was a method of creating a thread without losing metal. With my advancing years my memory isn’t what it was. I think it will be easier to get some new set of pv0044 link rods. The problem I have is finding somewhere that sells them, they all seem to be out of stock. Thanks Bill W. Quote Link to comment Share on other sites More sharing options...
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