Ty řády měly vycházet z řádů TT Isle Of Man, potažmo Mezinárodního Irského Šampionátu na přírodních okruzích.
Kdyby to tak ale opravdu bylo, tak by si neškrtli ani stávající tři exoti.

Šampionátů, kde jsou nějakým způsobem zařazeny třídy Twin, je sice v Evropě a to i na ostrovech vícero, ale které z nich jsou na přírodních okruzích, tak jako v Irsku, potažmo na TT? To jen odpověď na to, proč se převzaly zrovna tyto řády na naše přírodní okruhy...

znění řádů konkrétně na TT 2014:

http://www.iomtt.com/~/media/Files/2014/Downloads/TT-Entry-Forms/TT_REGS_2014.ashx

APPENDIX E
LIGHTWEIGHT TT RACE – TECHNICAL REGULATIONS
Machines must comply with general technical rules as per ACU Standing Regulations and 2014 IOM TT regulations.
• Any four-stroke twin cylinder motorcycle originally sold for road use with a water cooled engine of up to 650cc may be used provided it adheres
to the following regulations.
• Eligible machines must be from models homologated for road use 2006 or later.
Verification of Machines
• In the TT Lightweight Race a dynometer will be used to check power output (motorcycles must be submitted for these checks no later than noon
on Wednesday 28th May).
1. Frame and Swing Arm
• Frame must remain as originally produced by the manufacturer for the homologated machine. Surplus attachment brackets may be removed and
replaced with those more suitable for race fairings, sub frame attachment & instrument brackets. Rear sub frame may be removed, replaced or modified.
• Swing arm may be replaced from a model of the same Manufacturer, provided the original attachment to frame and rear suspension remains as
homologated.
2. Suspension
• Forks may be replaced. Fork yokes / triple clamp may be changed. Original internal parts of the fork may be modified or replaced. Aftermarket
damper kits or valves may be installed. Fork springs may be replaced. Fork caps may be modified or replaced beyond the homologated standard
to allow external adjustments.
• Steering damper may be added or changed.
• Rear suspension unit can be changed or modified, but the original attachment to the frame and swing arm must remain as homologated.
3. Brakes
• Front and rear brake discs may be changed. Only ferrous materials are allowed for brake discs.
• Front and rear brake calipers may be changed. Front and rear brake pads may be changed.
• Front and rear master cylinders may be changed.
• Front and rear hydraulic brake lines may be changed. The split of the front brake lines for both front brake calipers must be made above the lower
fork bridge (bottom yoke).
4. Wheels and Tyres
• Wheels may be replaced. Carbon fibre or composite wheels are not permitted.
• All tyres must be moulded treaded type. Slick or cut slick tyres are not permitted.
5. Controls
• Footrest and foot controls may be replaced or relocated but brackets must be mounted to the frame at the original mounting points.
• Handlebars, hand controls and cables may be altered or replaced. Engine starter switch and kill switch must be located on the handlebars and
must be operational at technical checks.
6. Bodywork, tank, fairing and seat unit
• Fairing, mudguards and seat unit may be altered or replaced.
• Windscreen, if fitted, may be replaced with transparent material only.
• The original instruments and fairing brackets may be removed, replaced or added to.
• The petrol tank capacity must remain as originally produced by the manufacturer for the homologated machine (tolerance +0.5 litre) or may be
no greater than 20 litres. The unleaded baffle in the tank may be removed and the filler replaced. The position of the tank mounting points on
the frame must remain as standard. Fuel tank materials may be changed.
• The position of the tank mounting points on the frame must remain as standard.
• The lower fairing has to be constructed to hold, in case of an engine breakdown, at least half of the total oil and engine coolant capacity used in
the engine (minimum 5 litres). The lower edge of openings in the fairing must be positioned at least 50 mm above the bottom of the fairing.
7. Battery
• The size and type of the battery may be changed and relocated.
8. Engine
• Original OEM cylinder head, rods, pistons, valves, cylinders may be modified, polished or lightened.
• Gas flow modifications normally associated with individual tuning is permitted.
• Compression ratio of the engine maybe changed.
• Capacity must not exceed 650cc.
• Pistons may be replaced.
• Con rods may be replaced.
• Crankshaft must remain as originally produced by the manufacturer.
• Camshaft timing may be changed by the slotting of cam sprockets. Cam lift and dwell is free.
• The thermostat may be removed from the housing to aid cooling, if required.
• Engine fuel/ignition ECU must remain as per the homologated machine. The addition of a fuelling only “power commander” type device plugged
in to the existing wiring loom is permitted. The maximum rpm of the stock machine must be retained.
• All machines will be tested on the Dyno during practice week and selected machines post race.
9. Transmission
• Additions to the gearbox or selector mechanism, such as quick shift systems are permitted.
• Clutch springs, friction and drive plates may be replaced.
• The use of slipper clutch assemblies is permitted.
• Front and rear external drive sprockets, chain pitch, width and length can be changed.
10. Electrics
• The alternator, starting system, starter crank gear and starter shaft may not be altered, replaced or removed from those fitted to the homologated
motorcycle. The engine must start using the standard on board electric start.
11. Exhaust System
• Exhaust pipe and silencers may be altered or replaced from those fitted to the homologated motorcycle. The number of final exit(s ) to the
exhaust may be altered from that of the homologated machine.
12. Fasteners
• Standard fasteners may be replaced with fasteners of any material and design. The strength and design must be equal to or exceed the strength
of the standard fastener it is replacing for structural applications.
• The use of titanium in the swing arm spindles and the wheels spindles is forbidden. For wheel spindles the use of light alloys is also forbidden. The
use of titanium alloy nuts and bolts is allowed. Aluminium fasteners may only be used in non-structural locations.
13. The Following Items MUST BE Removed
• Headlamp, rear lamp and turn signal indicators. Rear view mirrors, horn, license plate bracket, tool box, helmet hooks and luggage carrier hooks,
passenger foot rests, passenger grab rails, safety bars, centre and side stands must be removed (fixed brackets must remain).
14. The following items MAY BE removed
• Instruments, instrument bracket and associated cables, tachometer, speedometer and wheel spacers, radiator fan and associated wiring and upper
chain guard.
15. Chain Guards
• A guard must be fitted in such a way as to prevent trapping between the lower drive chain run and the final drive sprocket at the rear wheel.
16. Fuel
• Only Unleaded fuel as specified in the 2014 IOM TT regulations is permitted. The use of fuel additives is strictly prohibited.
17. Radiator and Oil Cooler
• The original radiator and oil cooler may be replaced. The use of coolants is prohibited, water only to be used.

ještě mi tu chybí odstavec o světlech "safety lights"

Nyní se mluví o změně řádů, ale to hlavně z hlediska finanční náročnosti, takže je dost možné, že úpravy co byly ještě letos povolené, už příští rok povolené nebudou.

Naposledy editováno 20.10.2014 15:06:05

Veronika-Suzuki> Když vidím ten rok 2006 a mladší, tak by si kromě nás "exotů" neškrtla ani většina stávajícího startovního pole Ostatně když by se zprůměrovalo stáří strojů z Twinů, tak by vyšlo zajímavé číslo. Výjimkou nejsou ani karburátorové stroje z roku 1999, což je, pokud se nepletu 15 let. Je to ještě kategorie moderních závodních motocyklů nebo už je to kategorie post-vintage nebo young-timer?
K tomu Pierobonu, základní cena je 27k€, reálná cena je 33-35k€. Ale podobné stroje v obdobných relacích dělá i NCR nebo GPM, kteří s nimi pravidelně vyhrávají italské i jiné šampionáty.
Nejde o účast těchto závodních speciálů, jde o různorodost startovního pole. Jinak to opravdu bude klubová záležitost SV/er6 klubu.