RP25-Profile

Uit MAT'54 Hondekop in 3D
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Wielstel in Model

Dit profiel voor een optimale spoor houden van het vermogen en meest prototypische uiterlijk binnen de Interchange grenzen van NMRA norm S-4.2

Wielen van deze contour optimaal te presteren op schema volgens de grenzen van NMRA standaard S-3.2 en in overeenstemming met RP-10, RP-11 en R-12.

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WHEEL CODE N' T W D' P R1 R2 R3 SCALE NAME
175 .175 .048 .127 .045 .015 .025 .028 .028
148 .148 .039 .106 .036 .013 .021 .023 .023
126 .126 .036 .090 .028 .012 .018 .021 .021
116 .116 .031 .085 .026 .011 .014 .018 .018 .1:48. On3
110 .110 .030 .080 .025 .010 .014 .018 .018 ..1:48 1:64 1:76.2
93 .093 .026 .067 .020 .009 .009 .017 .017
88 .088 .025 .063 .023 .009 .012 .015 .015 1:87.1 HO
79 .079 .023 .056 .020 .008 .011 .014 .014
72 .072 .020 .052 .020 .008 .010 .012 .012
54 .054 .014 .040 .016 .007 .008 .009 .009 1:160 1:220 Nn3 Nn2 Z
NOTES:
  1. Wheels listed above provide a selection meeting the interchange requirements of standards S-4.2
  2. N′ and D′ are Nominal design dimensions providing reasonable tolerance within the limits specified by N and D of standards S-4.2.
  3. T and W are measured at the Gaging Point P which is the point of tangency between R1 and R2 and the point of crossing of R2 with the inside of the wheel.
  4. Radii at the edge of the flange should be as large as possible within prescribed limits to reduce side friction against the railhead to protect Frog Points by decreasing effective Wheel Check Gage and to guide the flange through Flangeways and past other obstructions.
  5. Tread Taper is not required, but 1 degree and 3 degree mold release draft is allowed. Note that new prototype wheels include a taper in anticipation of wear. Worn wheels show a reverse taper. A taper will also help center the wheels on the track.
  6. LS (Large Scale) wheels (code 256) follow G1MRA profile and are not presently covered under RP-25.

Veel gebruikte profielen

Profiel Hoogte 1:1 Schaal 0 (1:43,5) Rail code model Schaal H0 (1:87) Rail code model Schaal N (1:160) Rail code model Gebruikt bij
NP46 (46E3) 142 mm 3,26 mm 128 1,63 mm 64 0,89 mm 35 Zijlijnen
UIC50 151 mm 3,47 mm 137 1,74 mm 69 0,95 mm 37 De Belgische spoorwegen
UIC54 (54E1) 159 mm 3,65 mm 144 1,82 mm 72 0,99 mm 39 Hoofdlijnen
UIC60 (60E1) 172 mm 3,95 mm 155 1,98 mm 78 1,075 mm 43 Betuweroute

Bron

NMRA-RP25