KTM RC250GP

Last updated

KTM RC250GP
Sandro Cortese 2012.jpg
Sandro Cortese riding the RC250GP at the 2012 Australian Grand Prix
Manufacturer KTM
Production 2012 -
Predecessor KTM 125 FRR
Successor-
Class Moto3
Engine 249.5 cc (15.23 cu in) four-stroke single-cylinder
Bore / stroke 81 mm × 48.5 mm (3.19 in × 1.91 in)
Transmission 6-speed constant-mesh sequential manual, chain final-drive
Wheelbase 1,340 mm
Weightestimated 82kg (dry)
Fuel capacityapprox. 10 liters
Related Husqvarna FR250GP
Gas Gas RC250GP

The RC250GP is a Grand Prix racing motorcycle designed and built by KTM for the Moto3 class, introduced in 2012. It is also used in the Moto3 Junior World Championship. The RC250GP is raced by KTM's factory racing program (Red Bull KTM Ajo) as well as supplied to numerous customer teams. The motorcycle is one of the most successful machines of the Moto3 era to date, having taken five constructors' championships, including a clean sweep in 2013 winning every one of the 17 races.

Contents

Designation

The motorcycle's name derives from KTM's long-standing usage of the "RC" designation (short for "Road/Competition") for its sportbikes, beginning with the RC8, RC 390, and RC 125 production models and later also applied to its RC16 MotoGP prototype. The "250" relates to the engine displacement as mandated by Moto3 technical regulations. "GP" is short for Grand Prix, specifying the model to usage in Grand Prix racing, as opposed to its derivative models.

Technical Description

All components of the motorcycle frame and engine are developed in-house by KTM. The frame is a steel tube trellis design, while the swingarm is of aluminium construction. The 250cc four-stroke single-cylinder engine is equipped by regulation with a limiter at 13,500 rpm (earlier 14,000 rpm, before Moto3 regulation changes), with maximum torque output beginning at around 10,500 rpm. [1] The engine feeds a 6-gear transmission according to regulations. Suspension components are developed and produced by KTM subsidiary WP Suspension. The Slovenian manufacturer Akrapovič supplies the exhaust system. The braking system is supplied by Brembo and consists of two steel discs controlled by twin-piston calipers on the front wheel and a single disc on the rear wheel. The elliptical shaped air intake is placed on the front fairing, while the duct that connects it to the airbox passes under the steering head. KTM claims a dry weight of the machine of approx. 82 kg [2] though Moto3 regulations set a minimum combined weight of 152 kg for the bike and fully-equipped rider.

Dimensions and weights
Wheelbase 1,340 mm
Dry weight82 kg
Tank capacity10 L
Combined weight (bike + fuel + rider)152 kg
Mechanics
Engine type four-stroke single-cylinder
Displacement (bore, stroke)249.5 cm3 (Ø81mm, 48.5mm)
Compression ratio 14.5:1
Cooling system liquid
Valvetrain DOHC, 4 valves per cylinder, chain drive
Fuel inductiondigital electronic indirect multi-point port injection
Ignition variable advance CDI
ECU Dellorto DoPe 3.0 (series spec ECU)
Power<55 bhp (41 kW) @ 13,500 rpm
Maximum engine speed14,000 rpm
Transmission6-speed sequential manual, final chain-drive
Starter push start
Exhaust system Akrapovič titanium twin-pipe system
Chassis
Frame Tubular steel trellis, adjustable rake angle and swingarm pivot
Swingarm Pivoted, aluminium-construction
Fork WP Suspension 45mm USD
Rear suspension WP Suspension monoshock with hydraulic height and preload adjustment
Brakes, front2x Ø190 mm steel discs, Brembo twin-piston radial calipers
Brakes, rearØ190 mm steel disc, Brembo twin-piston radial caliper
Wheel, front OZ Racing 17"/2.5" forged magnesium rim, Dunlop 95/70-17 tire
Wheel, rear OZ Racing 17"/3.5" forged magnesium rim, Dunlop 115/70-17 tire
Sources: [2] [3] [4] [5]

Grand Prix Racing Results

Constructors' Championship results

SeasonPointsPosition
2012 3461st
2013 4251st
2014 3841st
2015 3412nd
2016 3821st
2017 2482nd
2018 3532nd
2019 3472nd
2020 3182nd
2021 3691st
2022 3233rd
2023 3941st

In 2013, KTM RC250GP machines won all races in the season, achieving the maximum possible points total.

Rider's Champions

Derivative Models

RC250R

Also known as the "Production Racer", KTM build a limited production of track-only bikes between 2013 and 2016 based on the RC250GP known as the RC250R. It was intended to be a cheaper "entry level" model for private racers. The bike was subsequently entered as a number of one-off wildcard entries by various teams in the 2014 season. The RC250R features a number of differences compared to the RC250GP, [2] [4] including

RC250RBR

For the Red Bull MotoGP Rookies Cup, KTM prepares identical, sealed motorcycles for each rider. The RC250RBR is essentially an RC250R featuring a few upgrades, such as an Akrapovič twin-pipe megaphone exhaust system without dB-killer, similar to the exhaust of the original RC250GP. [2] Previously the engine rev limit was reduced to 13,000 rpm to aid in extending the service life of the engine, [2] but has since been raised to the 13,500 limit of the base RC250R.

Husqvarna FR250GP

KTM purchased Husqvarna Motorcycles from BMW Motorrad in early 2013. As a marketing move by KTM to promote its new brand, Husqvarna entered the Moto3 paddock as a unique manufacturer in the 2014 and 2015 seasons with its FR250GP motorcycle. The FR250GP is however simply a badge-engineered RC250GP. [6] The "FR" designation comes from Husqvarna's series product naming conventions with the "F" signifying a four-stroke model and the "R" likely meaning "race". Husqvarna re-entered Moto3 beginning in 2020 with Max Biaggi's team Max Racing. [7]

Constructors' Championship Results

SeasonPointsPosition
2014 1564th
2015 854th
2020 863rd
2021 1664th
2022 2794th
2023 3073rd

GasGas RC250GP

KTM purchased a controlling stake in the Spanish motocross and trials bike manufacturer GasGas in 2019. [8] Similar to the previous move with Husqvarna, KTM entered GasGas as a unique manufacturer in the Moto3 championship starting from 2021 with Aspar Team. [9]

Constructors' Championship Results

SeasonPointsPosition
2021 2663rd
2022 3891st
2023 2704th

Rider's Champions

CFMoto Moto3

KTM's Chinese partner CFMoto entered the Moto3 championship as a unique manufacturer with Prüstel GP starting from 2022, using rebranded RC250GP bikes. [10]

Constructors' Championship Results

SeasonPointsPosition
2022 1305th
2023 1135th

See also

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References

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  2. 1 2 3 4 5 Canet, Don (2 December 2014). "EXCLUSIVE FIRST RIDE: KTM RC250 Race Bikes". Cycle World. Retrieved 21 March 2020.
  3. Robinson, David; Caron Dawe, Joseph (13 June 2014). "Take a look around Jack Miller's Moto3 machine". RedBull.com. Retrieved 21 March 2020.
  4. 1 2 Beeler, Jensen (20 February 2013). "Photos: Building the KTM RC250R Production Racer". Asphalt and Rubber. Retrieved 21 March 2020.
  5. Wheeler, Adam (20 February 2013). "BUILDING A MOTO3 BIKE…". KTM.com. Retrieved 21 March 2020.
  6. Beeler, Jensen (28 January 2014). "First Look at the "Husqvarna" Moto3 Race Bike". Asphalt and Rubber. Retrieved 21 March 2020.
  7. Beeler, Jensen (10 November 2020). "This KTM Moto3 Bike Is Having an Identity Crisis" . Retrieved 21 March 2020.
  8. Turner, Jean (30 September 2019). "KTM Buys GasGas". Cycle News. Retrieved 18 November 2020.
  9. "GASGAS motorcycles heads for Moto3™". MotoGP.com. Dorna Sports. 18 November 2020. Retrieved 18 November 2020.
  10. "From China with fervor: CF Moto debuts in the 2022 Moto3 World Championship". GPone.com. 24 September 2021. Retrieved 8 January 2022.