Beta RR4804T Enduro
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| Beta RR4804T Enduro | |
| Manufacturer | |
|---|---|
| Production | 2015 |
| Engine | Four stroke, single cylinder with countershaft, DOHC, 4 valve |
| Compression ratio | 12.1:1 |
| Ignition | AC-CDI, Kokusan |
| Spark Plug | NGK LKAR 8A-9 |
| Transmission | 6 Speed |
| Frame | Molybdenum steel with double cradle split above exhaust port. Air filter access from the side |
| Suspension | Front: 48 mm Ø Sachs USD fork, adjustable compression and rebound, TFX technology Rear: Sachs shock w/adjustable rebound and hi/low speed compression |
| Brakes | Front: Single wave Ø 260 mm floating disc, 2 piston floating caliper Rear: Single Ø 240 mm disc, 1 piston floating caliper |
| Front Tire | 90/90 -21 |
| Rear Tire | 140/80 -18 |
| Wheelbase | 1490 mm / 58.7 in |
| Seat Height | 940 mm / 37.0 |
| Weight | 112,5 kg / 248 lb (dry), |
| Fuel Capacity | 8.0 L / 2.1 US gal |
| Manuals | Service Manual |
Engine[edit | edit source]
The engine was a Liquid cooled, forced by pump cooled Four stroke, single cylinder with countershaft, DOHC, 4 valve. The engine featured a 12.1:1 compression ratio.
Drive[edit | edit source]
Power was moderated via the Wet multi-disc.
Chassis[edit | edit source]
It came with a 90/90 -21 front tire and a 140/80 -18 rear tire. Stopping was achieved via Single wave Ø 260 mm floating disc, 2 piston floating caliper in the front and a Single Ø 240 mm disc, 1 piston floating caliper in the rear. The front suspension was a 48 mm Ø Sachs USD fork, adjustable compression and rebound, TFX technology while the rear was equipped with a Sachs shock w/adjustable rebound and hi/low speed compression. The RR4804T Enduro was fitted with a 8.0 L / 2.1 US gal fuel tank. The bike weighed just 112,5 kg / 248 lb. The wheelbase was 1490 mm / 58.7 in long.
Photos[edit | edit source]
Overview[edit | edit source]
Beta RR 4T 480 Enduro
The whole range is equipped with engines that have been
completely renewed, both in terms of looks and performance. The total weight has
been reduced by 1kg on the 430 and 480 engines, compared with the previous 450
and 498, and by as much as 1.5kg for the 350 (derived directly from the 2014
factory model) and the 390 (which will replace the 400). The central guards have
been completely redesigned, made lighter and modified internally to house a new
oil-pump drive system, which is simpler and more effective thanks to elimination
of a drive gear. The flywheel chamber has been redesigned in order to minimise
pumping losses, and the entire shape has been reworked thanks to the
introduction of ribs that stiffen the engine block. The covers, clutch and
flywheel have also been modified with a view to reducing weight and, at the same
time, increasing the rigidity of the parts themselves.
The crankshafts have new shoulders and a new con rod,
lighter and with optimised inertia, making the bike quicker to deliver power and
more agile thanks to a reduction of the gyroscopic effect.
More specifically, the con rods are shorter and lighter,
and feature a new design. The redesign is aimed at reducing the alternating
masses and the size of the engines. The 390-430-480 cc engines, in fact, have
the entire combustion unit positioned lower down compared to the previous
models. This means that masses are more compact and closer to the centre of
gravity, significantly improving the bikes agility.
The piston is lighter and more robust, thanks to a
structure derived from Formula 1 called box-in-box, which enables a reduction
in vibrations and an increase in performance. The gudgeon pin is coated with a
Diamond-Like-Carbon (DLC) treatment to minimise friction and wear.
The camshafts were developed with a new profile to boost
performance, especially at low speeds, and to provide greater linearity of
output. On the 350 and 390 version has been adopted a complete set of titanium
valves.
The cylinder features a new design for the water jacket to
improve the removal of heat and increase the efficiency of the whole cooling
system. The head has been completely redesigned both in terms of the conduits
and combustion chamber, in relation to the needs of the new engine sizes, and
externally.
The starter motor has been significantly improved and is
more powerful and lighter compared with the previous models. The balance shaft
has been completely redesigned in relation to the different balancing of the
primary masses of the crankshaft unit; the result, also here, is a significant
reduction in weight. The intake sleeve has been completely redesigned for the
new engine sizes to guarantee better fuel supply, optimal filling of the engine
and therefore a better yield, particularly at low rotation speeds.
Key features: Die-Cast Engine cases (2.2 lbs. lighter) All new displacements for optimum performance and handling New crankshaft, connecting rod, cylinder head, and piston Betas ETR(Easy-To-Ride) Engine New front fork compression piston to improve oil flow and reduce harshness New rear shock piston to reduce heat Handlebar pad from Race Edition New design seat foam that is softer New graphics and color scheme Full-Function Meter with Adjustable Trip Meter Push-Button Seat Release Beta-Built 4-Stroke with Electric Start Aluminum Skid Plate Complete Light Package Back-Up Kick Starter Rear Suspension Linkage Strongest Wheels in the Industry Softer Seat Foam Available in a 350 EFI, 390, 430, and 480cc 6-Speed Wide Ratio Transmission Electric/Kick Starter Built-In Rear Grab Handles 36.6 Seat Height Storage for Tool Kit 6-Month Limited Warranty Quick-Access Air Filter
| Make Model | Beta RR 4T 480 Enduro |
|---|---|
| Year | 2015 |
| Engine Type | Four stroke, single cylinder with countershaft, DOHC, 4 valve |
| Displacement | 477.5 cc / 29.1 cu in |
| Bore X Stroke | 100 x 60.8 mm |
| Compression | 12.1:1 |
| Lubrication | Forced, 2 oil pumps |
| Engine Oil | SAE 10W/50 |
| Engine Oil Capacity | 0.8 L / 0.2 US gal |
| Cooling System | Liquid cooled, forced by pump |
| Induction | Keihin FCR-MX39 |
| Ignition | AC-CDI, Kokusan |
| Spark Plug | NGK LKAR 8A-9 |
| Starting | Electric and kick |
| Clutch | Wet multi-disc |
| Transmission | 6 Speed |
| Final Drive | Chain |
| Primary Drive | 31:73 |
| Frame | Molybdenum steel with double cradle split above exhaust port. Air filter access from the side |
| Front Suspension | 48 mm Ø Sachs USD fork, adjustable compression and rebound, TFX technology |
| Front Wheel Travel | 290 mm / 11.4 in |
| Rear Suspension | Sachs shock w/adjustable rebound and hi/low speed compression |
| Rear Wheel Travel | 290 mm / 11.4 in |
| Front Brakes | Single wave Ø 260 mm floating disc, 2 piston floating caliper |
| Rear Brakes | Single Ø 240 mm disc, 1 piston floating caliper |
| Front Wheel | 1.60 x 21 |
| Rear Wheel | 2.15 x 18 |
| Front Tire | 90/90 -21 |
| Rear Tire | 140/80 -18 |
| Dimensions | Length: 2180 mm / 85.8 in Width: 807 mm / 31.8 in Height: 1270 mm / 50.0 in |
| Wheelbase | 1490 mm / 58.7 in |
| Seat Height | 940 mm / 37.0 |
| Ground Clearance | 320 mm / 12.6 in |
| Footrest Height | 413 mm / 16.3 in |
| Dry Weight | 112,5 kg / 248 lb |
| Fuel Capacity | 8.0 L / 2.1 US gal |
| Fuel Reserve | 1.3 L / 0.3 US gal |