Index
Branchline
Variations
Mini-mo Variations
Legend
[ S x.y, RP x.y, FAQ x.y, where x. and y are numbers - example: S2.15,
F1.7, RP 5.11 ]
S = Standard. All Free-mo modules and participants
must conform to the requirement/standard stated.
RP = Recommended Practice. These are procedures or
specifications which are strongly encouraged for maximal reliability or
fidelity.
BL = Branchline. Variation from the "Free-mo
Standards & Recommended Practices" for Brachline Modules.
MM = Mini-mo. Variation from the "Free-mo Standards
& Recommended Practices" for Mini-mo Modules.
FAQ = Frequently Asked Question/Answers which
explain the reasoning behind a particular Standard or Recommended
Practice.
Free-mo Modules fall into three basic categories, see
S1.5. This document is a supplement to the "Free-mo Standards &
Recommended Practices". These are additional standards for Branchline and
Mini-mo Modules. Branchline and Mini-mo modules must meet all the "Free-mo
Standards & Recommended Practices" except for the exceptions below.
BL1.0 Branchline Introduction
BL1.1 Branchine modules follow all Free-Mo Standards
with the following exceptions.
There are no variations or exceptions to the frame and
legs for Branchline Modules
BL3.1 Track on the through route of a Branchline
Module may be less than
Code 83 but shall be no less than Code 70. The module owner shall
supply transition solutions to code 83 rail at the Free-mo compliant
ends if needed. (FAQ
3.3)
BL3.2 Sidings, spurs and
other tracks of a Branchline module may be less than code 70 but shall be no less than code
40.
BL3.3 The minimum permitted curve radius on the through
route of the through route of a Branchline Module may be less than 42 inches but shall be no less than 36 inches.
This includes through track sidings and other tracks where through
traffic will run.
BL3.4 Spacing between tracks on curves of a Branchline module shall allow for
long cars to operate without fouling each other, observe;
NMRA Standards
S-8 Tack Centers for "Class
I" equipment.
BL3.5 The maximum permitted grade on the through
route of a Branchline Module is 4 percent (approximately 1/2 inch per
foot). (FAQ
3.6)
BL3.6 Vertical curves on the through route of a Branchline Module shall be appropriate for Branchline operation of contemporary long cars, see
NMRA Standards S-7
Clearances,
Standard S-7 Clearances
and the NMRA Gage, and
NMRA Recommended
Practices
RP-11 Curvature and Rolling Stock.
BL4.1 Mini-mos modules, less than 3 feet in length, do not have to
have throttle jacks mounted to the sides.
There are no variations or exceptions to the controls for
Branchline Modules
There are no variations or exceptions to the scenery
for Branchline Modules
BL7.0 Glossary
There are no special glossary terms for Branchline Modules
Free-mo
Standards & Recommended Practices Revision History
MM1.0
Mini-mo Introduction
MM1.1 Mini-Mo modules follow all Free-Mo Standards with
the following exceptions.
MM2.1 Mini-mo endplates are recommended to be 12 inches wide;
however, they can be as small as 8 inches provided there is a minimum
4-inch spacing from the track centerline to the edge of the module. (FAQ
2.4)
MM2.2 Mini-mos must have legs for adjustment but do not
need to stand on their own. (A Mini-mo might have one leg at each end). (FAQ
2.5)
MM3.1 The track should be centered on the module end.
There are no variations or exceptions to the wiring for
Mini-mo Modules
There are no variations or exceptions to the controls
for Mini-mo Modules
There are no variations or exceptions to the scenery
for Mini-mo Modules
MM7.0 Glossary
There are no special glossary terms for Mini-mo Modules
Free-mo
Standards & Recommended Practices Revision History
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