Templot Club Archive 2007-2020
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posted: 7 Mar 2013 00:45 from: julia click the date to link to this post click member name to view archived images |
Does anyone have any experience of running continental stock from the likes of roco and fleischmann on oo-sf track? I'm finding the idea of OO-SF track appealing, but need to know if a friends H0 stock will run on it ok. Thanks J |
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posted: 7 Mar 2013 06:56 from: Stephen Freeman
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It should do, but he'd have to check the wheels out to make sure. Easy enough to do. 00-SF Gauge 16.2mm BRMSB Back to Back 14.5mm 00-SF Check gauge 15.2mm According to NMRA after converting from Imperial HO Back to Back 14.55mm Check gauge 15.32mm Stephen julia wrote: Does anyone have any experience of running continental stock from the likes of roco and fleischmann on oo-sf track? I'm finding the idea of OO-SF track appealing, but need to know if a friends H0 stock will run on it ok. |
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posted: 7 Mar 2013 10:22 from: Dasatcopthorne click the date to link to this post click member name to view archived images |
julia wrote: Does anyone have any experience of running continental stock from the likes of roco and fleischmann on oo-sf track? I'm finding the idea of OO-SF track appealing, but need to know if a friends H0 stock will run on it ok. You may very well find that the deep flanges of the Roco etc. wheels will bump along the tops of the chairs in this gauge. Wait a mo. Just tested some wheels I have recently removed from a Roco wagon and yes they hit my Exactoscale chairs and I know C&L are worse for this. Soldered track would be fine though. Dave Smith |
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posted: 7 Mar 2013 10:46 from: Martin Wynne
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Dasatcopthorne wrote:Just tested some wheels I have recently removed from a Roco wagon and yes they hit my Exactoscale chairs and I know C&L are worse for this.If the flanges are extra deep they are also likely to be thicker than usual, and may not be suitable for 00-SF. To run on 00-SF: back-to-back: 14.3mm MIN. back-to-flange: 15.2mm MAX. From which you can see that the maximum flange thickness is 0.9mm, and then only if the back-to-back is on the minimum. The nominal NMRA H0 dimensions for years were: back-to-back: 14.4mm flange thickness: 0.8mm (RP25/110 wheels) and these will run fine on 00-SF. In recent years the NMRA have changed their dimensioning to a new unified system which contains flaws and in many places makes no sense, so I recommend using the old dimensions if you can find them. They worked perfectly and did not need changing. I imagine most H0 manufacturers have continued to use the old tools and assembly jigs. regards, Martin. |
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posted: 9 Mar 2013 13:00 from: julia click the date to link to this post click member name to view archived images |
Martin Wynne wrote: Dasatcopthorne wrote:Just tested some wheels I have recently removed from a Roco wagon and yes they hit my Exactoscale chairs and I know C&L are worse for this.If the flanges are extra deep they are also likely to be thicker than usual, and may not be suitable for 00-SF. For Completeness, the NEM numbers (Taken from NEM 310) are: Back-Back: 14.3mmFlange Thickness: 0.7-0.9Back-to-Flange: 15.2 My lay interpretation is that wheels to that spec should work on 00-SF track. Am I reading it right? J |
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posted: 9 Mar 2013 13:50 from: Martin Wynne
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julia wrote:My lay interpretation is that wheels to that spec should work on 00-SF track. Am I reading it right?Hi Julia, Yes.  The only thing to check is that RTR wheels do actually comply with the claimed spec. Since manufacturing switched to the Far East, quality control can sometimes fall down. regards, Martin. |
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posted: 9 Mar 2013 14:39 from: Glen Suckling
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Hi Julia, I model in a different scale but the problem is the same. My fiddle yard track is built to 0-NMRA standards using code 148 FB rail while the rest of the layout has track built to GOG-F standards using code 124/125/126 BH rail. According to my mood at the time my rolling stock may be either UK 1:43.54 GOG-F or US 1:48 O-NMRA. I have even been known  to to run a train containing vehicals of both standards. I carefully check the back to back on wheel sets and the check gauge on the track. As long as everything is within tollerance I have no problems.However, I cannot emphasize enough what Martin Wynne wrote: The only thing to check is that RTR wheels do actually comply with the claimed spec. Since manufacturing switched to the Far East, quality control can sometimes fall down. Most of the problems that I have experienced originated with out of spec wheel sets. More so with the NMRA than GOG although both have occurred and include wheels from big name manufacturers. The commonest problem is over thick flanges - in most cases the extra thickness has been on the back of the wheel effectively reducing the back to back measurement so that the wheel binds on the wing/check rails. Glen |
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