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Wow. Nikcole makes inserts that are .027, .032, .035, .043, .051 if that will help. I try to work around these sizes. I can send you the dimensions so you can make a holder. I have made a few for the sherline's.No pressure.
Old engine designs, full and model scale, used very wide rings. Most production model engines (RC) have 1mm rings, up to 27mm bore or so. Then, only 1.1-1.2mm.Steve, do you cut the pocket at the compund 1° angle to the holder? I've given up on Nikcole as the pockets are week. Maybe in a hardened material they would hold up. Also their threading inserts have much too large a radius for small threads.
I think I know why the ring sizes are that way and for that reason I wrote a bit about reducing friction to gain power and reliability. In the end I had to Google a bit and almost the first hit was this one :http://www.youtube.com/watch?v=iXhjytn860wThough it does not explain why as such, it shows that no one has really used (that kind we have access to) cast iron for decades. These more modern materials allows slimmer rings, reduces friction and allows higher rpm's.Argh - I just posted and discovered that I can't see my own post with video on IE11 - it works on Chrome.
Hi Dave,I understand and agree with your ideas of keeping the rings as thin as possible to reduce contact friction. Do you think it would produce the same results if you were to machine a step on a wide in order ring to reduce the contact area? Just thinking.Did your research indicate a better or alternative material to cast iron? Many of my racing bike engines seem to have thin, hard chromed, steel rings. They are strong and very flexible, unlike cast iron. Do you think we could get away with steel rings, without the Chrome? Has anyone tried it?Mike
Quote from: Vixen on January 02, 2019, 11:57:06 PMHi Dave,I understand and agree with your ideas of keeping the rings as thin as possible to reduce contact friction. Do you think it would produce the same results if you were to machine a step on a wide in order ring to reduce the contact area? Just thinking.To answer the first question NO. the friction force would be the same as the full width ring. The wall pressure is a function of the width of the ring.
Hi Dave,I understand and agree with your ideas of keeping the rings as thin as possible to reduce contact friction. Do you think it would produce the same results if you were to machine a step on a wide in order ring to reduce the contact area? Just thinking.