2005 Features

• RAGA-Racing Oversize Handlebars (250/280/300)
  RAGA-Racing Oversize Handlebar clamps
  New Mineral Oil Clutch Master Cylinder
  Mineral oil clutch circuit
  '05 Teflon Clutch Hose
  '05 Teflon Brake Hose
  New Radiator with '05 Thermostat switch
  New Style Registration Plate ‘05
  New LED rear light assembly
  New longer front exhaust pipe
  Hebo Zero Grips
  New '05 Sachs shock absorber
  New Decoration ‘05
  New Crankshaft bearings with built in seals
  New ‘05 Clutch Plates
  '05 spec. Kokusan ignition (250 & 280)
  '05 spec. Ducati ignition (300)

With excellent references and with an impeccable file after the successful season in Adam Raga's hands with the TXT Pro, the 2005 GAS GAS trial range starts from a much perfected initial base to apply a series of small improvements learnt in competition, the best testing bench for the development of the off-road leading manufacturer's products.

Visually compared to its predecessor, the new 2005 GG TXT Pro does not offer considerable modifications apart from the new and striking decoration. The colours identifying the cylinder sizes are the same as in previous years - Rookie TXT Pro 80 cc in red; 125 and 200 cc in yellow; 250 and 280 in red and blue; and silver for the biggest bike, the 300 - and the decoration is globally more racing, according to the philosophy transmitted in all the 2005 models.

However, a closer look uncovers several details that make the new range a lastgeneration product, aiming at a featerweight figure again – the GAS GAS is already one of the ‘slimmest' bikes in the WTC, but counts on an enviable character and overall toughness – by taking grams off every possible part and leaving the total weight in just 69 kilos, 64 in the Rookie models.

One of the determining factors in this task was the use of a new, variable diameter handlebar – this change affects the bigger bikes, from the 250 to the 300. The bar diameter is not constant from one end to the other: it changes from bigger in the centre to smaller in the ends.

This has allowed the technicians in charge of the continuous development of the GAS GAS trial bikes to achieve the targeted weight reduction in contrast to the conventional handlebar, improving the rider's mobility and comfort at the same time, as it allows the rider to keep the body more to the front with no remarkable physical effort. The handlebar also mounts new racing clamps and Hebo Zero grips.

A look at the rear shows that the 2005 GG TXT Pro bikes mount a new number plate. It features lighter material and the new design is more elaborated. The brake light is also innovative. Technically called ‘racing leds', it substitutes the classical bulb by a system where a set of leds is in charge of reflecting the light; this new system has been adapted in the new bikes because it is very unlikely to fuse and it is much lighter than a conventional bulb, following GAS GAS's weight-saving line.

A highly-improved engine

The 2005 TXT Pro feature a single-cylinder, 2-stroke engine with reed-intake directly into the engine crankcase, Dell'Orto carburettor, and a GAS GAS-patented hydraulically-operated, 1/3 disk, adjustable progressivity, diaphragm clutch. The range also features a new oil clutch pump, where the brake fluid used up to the present has been replaced by mineral oil. The result is an easier-to-maintain and more reliable clutch-operating system. Any mechanic dismantling the clutch circuit will not have the problems caused by brake fluid should leaking occur in the process now.

At the same time, the clutch line and the front brake line are teflon-covered in the outside. Teflon is an insulating material with extremely high resistance which is hardly affected by heat or humidity, a very important factor in off-road bikes. The clutch disks have also evolved with higher quality to ensure that their surface is slick at all times. The material used is different from the former bikes, with different width tolerances for a perfected clutch.

The crankshaft bearing lubrication is continuous with an oil by-pass system in the crankcase. They feature built-in seals as a novelty in the 2005 models. This means that the two parts in the crankcase – bearing and seal - in former models have become one, which makes the assembly much easier and, again, saves weight.

Shaving off small parts is a determining factor in the eagerness to save weight. Another example is the radiator. This element features the thermo contact now, forming a very compact package and avoiding the introduction of unnecessary small pieces. The bike is also more homogeneous, with no performance loss at all. The modifications in the engine finish with the new ignition: It is a variable electronic ignition in the Rookie bikes and a digital, programmable magnetic flywheel CDI Kokusan in the rest of the models, except for the TXT Pro 300, which features a Ducati ignition. The exhaust curve has also been modified.

A faultless suspension

The chassis – elliptic shape in Cro-Mo – is the part that counts on less innovations in the 200 diameter tele-hydraulic Marzocchi fork adopted in the 2006 range – 40mm in the bigger bikes and 38mm in the Rookie, Pro 125 and 200 – the overall stiffness was proportionally improved and, as a result, all the possible flexions of the mount were eliminated. The new range counts on a new Sachs shock absorber with new settings. The rear suspension keeps the variable progressivity system.

Featuring new Michelin tyres – tubeless at the rear – all the new range models are fitted with 32-spoke duraluminium rims, with a 185mm disc brake at the front and 150mm at the rear. The fuel tank capacity – new in 2006 , with improved finish and no de-vapourizing hole in 2005 – is 3 litres for the Rookie and 3.1 litres in the rest of the models. range, being already very advanced in the previous series. With the new, revolutionary bigger diameter tele-hydraulic Marzocchi fork adopted in the 2006 range – 40mm in the bigger bikes and 38mm in the Rookie, Pro 125 and 200 – the overall stiffness was proportionally improved and, as a result, all the possible flexions of the mount were eliminated. The new range counts on a new Sachs shock absorber with new settings. The rear suspension keeps the variable progressivity system.

Featuring new Michelin tyres – tubeless at the rear – all the new range models are fitted with 32-spoke duraluminium rims, with a 185mm disc brake at the front and 150mm at the rear. The fuel tank capacity – new in 2006 , with improved finish and no de-vapourizing hole in 2005 – is 3 litres for the Rookie and 3.1 litres in the rest of the models.

2005 Trials Range

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2006 Trials Range

After a two-year development period, BETA have finally released a completely new range of 50, 80 and 125cc bikes designed specifically for kids. The 50 and 80cc bikes have totally new engines designed for trials use. The bikes feature steel frames, a four-speed gearbox on the 50 and monoshock rear suspension with hydraulic disk brakes front and rear. These are REAL trials bikes not just centrifugal clutch toy bikes. The 80cc bike should be available in June.The 125cc is based on the 250 REV-3. Again this is a totally new motor. The bike uses REV-3 cycle parts. The proven linkless rear suspension combined with conventional front forks and super strong alloy frame produce a light rugged bike ideal for a Junior who is not ready for the power and weight of a full sized bike.BETA is also producing a centrifugal clutch minitrial bike using an air-cooled 50cc motor. This bike is designed for very young kids - it only weighs 42.5kg and uses 16 and 14-inch wheels

BETA REV-3 125ccBETA has just released the REV-3 125cc trials bike. Based on the REV-3 200/250/270 trials bikes using the same frame but featuring a new motor with the same design layout as the larger capacity REV-3's. The motor is basically a scaled down version of the 250cc motor sharing many parts. In appearence they are the same as the larger REV-3 's but the 125 is considerably lighter and with much softer power characteristics. This bike is designed for Junior riders so they can gain confidence before graduating to filll size bikes.

Frame Twin spar aluminium. Petrol in frame
Wheel base 1310mm
Length 1990mm
Width 850mm
Height 1120mm
Seat height 660mm
Ground clearance 310mm
Footrest height 360mm
Fuel capacity 3.2 litres
Reserve 1.0 litres
Coolant 600cc
Front fork Conventional hydraulic 38mm tube
Rear suspension Linkless double piston rising rate shock absorber
Shock absorber travel 51mm
Front wheel travel 165mm
Rear wheel travel 175mm
Front brake 185mm four piston hydraulic
Rear brake 165mm four piston hydraulic
Front wheel 21 inch 2.75 tyre
Rear wheel 18 inch 4.00 tyre
ENGINEBETA single cylinder 2 stroke liquid cooled crankcase inductionBore 54mm
Stroke 54mm
Capacity 124cc
Ignition Electronic variable advance
Carburettor Mikuni VM 26/208
Clutch Multiple disc in oil bath with shock absorber
Gear box 6 speed
Primary reduction 21/71
Secondary reduction 11/55

2006 REV 3
First details of the 100th anniversary BETA REV-3
Betamotor have released some information on the new 100th anniversary edition of the BETA REV-3.
The 2003 model was a major rethink on the revolutionary REV-3 series which began in 2000. The design brief for 2006 was to make the bike lighter and stronger with an even more tractable engine.
The frame is all new but its outer appearance is the same. It is lighter with new rear subframe supports for the air box and rear fender which increases the structural strength. Although the rear subframe was not a problem on the 02/03 models, the factory decided to increase the rigidity of the rear end while the frame was redesigned. The front forks are redesigned to improve front end rigidity and decrease weight. Most importantly, weight distribution is maintained at a perfect balance with front end and rear end weights the same. This leads to the renowned BETA trait of perfectly neutral steering. Both front and rear ends are just as easy to flick around.
The engine has a new cylinder with modified porting to improve low rev performance. Combined with an altered spark advance curve, the engine's power delivery is even smoother and more progressive. REV-3 bike, particularly the '03 series are renowned for smooth linear power delivery giving traction in even the slipperiest of conditions. The '04 anniversary model will be even better.

2006 Trials Range

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