So I copy here relevant bits.
Who said what is not clear in this method of copying so I refer you back to the original thread for clarity.
However lets try and keep the two threads separate so supporters for my request for new rail die please come here.
Postby Paul Townsend » Tue Sep 20, 2016 2:11 pmPhilip Hall wrote:Martin Wynne wrote:
The factor missing from these discussions is the rail profile. Prototype BS-95R bullhead rail has a 1/2" top corner radius. Model rail sections are all over the shop in this regard. Clearly you can't calculate an incidence angle at which the flange will bind against the rail without knowing the exact profile of the flange, AND the exact profile of the rail head.
When the MSRG started all this they recommended the only suitable rail at the time, the Kingsway rail from Model Railway Manufacturing at Kings Cross. This rail had a distinct radius to the head, unlike our present day sections which are much squarer. This also made it look a little lighter. I still have a few odds somewhere. I also have a view that as a little more of the rail is in contact with the tyre, slightly more reliable electrical contact might ensue. One particular railway I have seen (Churston) has this rail and doesn't need to be cleaned too much.
This reminds me of my attempt a couple of years back to get a new die made for the rail extrusions as sold by all known suppliers.
I suggested to Jeremy Suter, Pete Llewellyn, EMGS then Trade Officer that they get together re this. Perhaps I should remind them at Aylesbury......
I did not get much enthusiasm as I was an apparent lone voice although I know Howard Bolton agrees with me that the current head profile is naff.
Studiolith sold the correct profile and ISTR that S4 and EMGS Stores did for a while.
When EMGS noticed flattening of the rail head...2 or more decades ago they announced it as "worn rail".
I argue the current rail head appearance is inferior as noted above by Phil and always have concerns about its effect on rolling stock track holding.
Can I invite others who would support this initiative to raise their heads? Maybe a case for crowd funding?
If anyone responds, this thread hijack topic needs its own new thread...heads up mods!
Postby Martin Wynne » Tue Sep 20, 2016 3:39 pm
Bear in mind that DCC Concepts have a new stainless steel rail section now available, and may consider a production run in nickel-silver. And Peco will shortly be introducing their version of bullhead rail in nickel-silver. It's actually a flat-bottom rail with a narrow foot the same width as the head (as they also do in 0 gauge), but it looks acceptable and will likely have the Peco advantage of being supplied dead straight.
Postby Paul Townsend » Tue Sep 20, 2016 4:02 pmgrovenor-2685 wrote:
You don't need a Mod to start a new thread
Yes, true but if no-one supports the idea there is no point.
Still, as Martin has suggested another way I will do the new thread so more responses here please