Here is a link to FIM
http://www.fim-live.com/en/doc/6400/sechash/ddf0c273/g/gf/?fr=
Page 48, These are motogp standards. If it is good enough for Motogp it is good enough for the streets.
Here is WSBK:
FIM WSBK:
2.4.10.9 Fuel tank
Material of construction of the fuel tank may be altered or replaced from those
fitted to the homologated motorcycle.
All fuel tanks must be filled with fire retardant material, or be fitted with a fuel
cell bladder.
Fuel tanks made of composite materials (carbon fibre, aramid fibre, glass fibre,
etc.) must have passed the FIM Standards for fuel tanks or be lined with a fuel
cell bladder.
Tanks made of composite material must bear the label certifying conformity with
FIM Fuel Tank Test Standards. Fuel tanks without a fuel cell bladder must bear a
label certifying conformity with FIM Fuel Tank Test Standards.
Such labels must include the fuel tank manufacturer’s name, date of tank
manufacture, and name of testing laboratory.
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Each manufacturer is requested to inform the FIM/CCR Secretariat of its fuel
tank model(s) which have passed the FIM test standards, together with a copy
of the fuel tank label. Full details of the FIM Fuel Tank Test Standards and
Procedures are available from the FIM (See ‘Fuel Tank Test Standards’ below).
Fuel cell bladders must conform to or exceed the specification FIM/FCB-2005.
Full details of this standard are available from the FIM
The fuel tank must be fixed to the frame from the front and the rear with a crashproof
assembly system. Bajonet style couplings cannot be used, nor may the
tank be fixed to any parts of the streamlining (fairing) or any plastic part. The
Technical Director has the right to refuse a motorcycle if he is of the opinion that
the fuel tank fixation is not safe.
The original tank may be modified to achieve the maximum capacity of 24litres,
provided the original profile is as homologated.
A cross over line between each side of the tank is allowed (maximum inside
diameter 10 mm).
Fuel tanks with tank breather pipes must be fitted with non-return valves which
discharge into a catch tank with a minimum volume of 250 cc made of a suitable
material.
Fuel tank filler caps may be altered or replaced from those fitted to the
homologated motorcycle, and when closed, must be leak proof. Additionally,
they must be secured to prevent accidental opening at any time.
The same size fuel tank used in practice must be used during the entire event.
Fuel tank homologation
1. Any fuel tanks, made of non ferrous materials (with the exception of
aluminium) must be tested according to the test procedure prescribed by
the FIM.
2. Each manufacturer is responsible for testing its own fuel tank model(s) and
will certify that the fuel tank exceeds the FIM test standard, if it has passed
the FIM test procedure for fuel tanks.
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3. Each manufacturer must affix a quality and test label on each fuel tank type
that is produced for competition use. This quality and test label will be the
recognition of a fuel tank model which has passed the FIM test procedure.
4. All fuel tanks that are made to the same design, dimensions, number of
fibre layers, grade of fibre, percentage of resin, etc, must be identified with
the same quality and test label.
5. The quality and test label will include the following information on each
label affixed to each fuel tank : name of the fuel tank manufacturer, date of
fabrication, code or part number, name of testing laboratory, fuel capacity.
6. Each manufacturer is requested to inform the FIM/CCR Secretariat of its
fuel tank model(s) which have passed the FIM test procedure, with a copy
of the quality and test label, according to point 5.
7. Only fuel tanks that have passed the FIM test procedure will be accepted.
