Allison Gearbox

  • Allison Transmission is the world’s largest manufacturer of fully automatic transmissions for medium- and heavy-duty commercial vehicles and is a leader in hybrid-propulsion systems for city buses.
  • This is coupled to a seven-speed Allison automatic gearbox and Oshkosh single-speed transfer case. Suspension is Oshkosh TAK-4 fully independent all-round, and by coil springs on the front two axles, hydraulic on the rear three.
  • Allison Transmission, Indianapolis, Indiana. 145,418 likes 506 talking about this. Allison Transmission is the world’s largest manufacturer of fully automatic commercial-duty transmissions, and is.

Gearboxes and accessories for Garrett TPE-331, Allison B-250 and Solar T-62 turbine engines, Conversions which replace the engines on existing aircraft with newer, more powerful engines, A new cylinder head for a diesel locomotive engine that helped it meet emissions requirements, and increased the power by 25% as a side effect.

Renault R25
Fernando Alonso driving for Renault F1 at Indianapolis in 2005
CategoryFormula One
Designer(s)Pat Symonds(Executive Engineer)
Bob Bell(Technical Director)
James Allison(Deputy Technical Director)
Tim Densham(Chief Designer)
Martin Tolliday(Project Leader)
Tad Czapski(Technology Director)
Dino Toso(Head of Aerodynamics)
Technical specifications
ChassisCarbon-fibre monocoque
Length4,600 mm (181 in)
Width1,800 mm (71 in)
Height950 mm (37 in)
Axle track1,450 mm (57 in) (front)
1,400 mm (55 in) (rear)
Wheelbase3,100 mm (122 in)
EngineMecachrome-built Renault RS25 3.0 L (183 cu in) V10 72° naturally aspirated, mid engined, longitudinally-mounted
TransmissionRenault 6-speed sequential semi-automatic gearbox
Power900–950 hp (671–708 kW) @ 19,000 RPM
Weight605 kg (1,334 lb) with driver, camera and ballast
Competition history
Notable entrantsMild Seven Renault F1 Team
Notable drivers5. Fernando Alonso
6. Giancarlo Fisichella
Debut2005 Australian Grand Prix
Teams' Championships1 (2005)
Constructors' Championships1 (2005)
Drivers' Championships1 (2005, Fernando Alonso)

The Renault R25 was the Formula One car entered by Renault in the 2005 season. The chassis was designed by Bob Bell, James Allison, Tim Densham and Dino Toso with Pat Symonds overseeing the design and production of the car as Executive Director of Engineering and Bernard Dudot leading the engine design. The car won both the Drivers' and Constructors' Championships in 2005, the first titles for any car racing with a French licence since the Matra MS80's triumph in 1969.[1]

Sophos aws. During the season, the car turned out to be slower than the McLaren MP4-20 at numerous points, with the win tally being 8-10. Reliability and consistency prevailed in the end, with Fernando Alonso and Giancarlo Fisichella taking the car to the last win and titles for a V10 powered Formula One car, marking the end of an era.

This car also claimed Michelin's first (and also second-to-last) title since its return in Formula One, winning the title again with Renault (the R26 2006-spec car) in the 2006 season, the last for the French tyre maker. The R25 was the first Constructors' Championship winning car since 1991 not to have been designed by either Adrian Newey or Rory Byrne.

Over 19 races, it scored 191 points, 8 wins, 15 podiums and was fully out of the points just twice in 18 starts (not counting the United States Grand Prix where both Renault drivers, in common with all their fellow Michelin tyre runners, withdrew prior to starting).[2]

In Episode 8 of Series 10 of the BBC show Top Gear, in 2007, presenter Richard Hammond drove the R25 around the Stowe Circuit at Silverstone, completing two laps.[3]

The R25 was also the last Renault Formula One car to use a 6-speed gearbox before the switch to a mandatory 7-speed gearbox in the following season.

Allison Gearbox

On December 11, 2020, Alonso drove the car for the first time in 15 years, hours before the start of the first practice session shown on Sky Sports,[4] and after the qualifying session for the 2020 Abu Dhabi Grand Prix. The car used Pirellislick tyres, rather than the original Michelin grooved tyres.

Complete Formula One results[edit]

(key) (results in bold indicate pole position; races in italics indicate fastest laps)

Allison Gearbox Manual

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Giancarlo Fisichella1RetRetRet5126RetDNS644943Ret524

Allison Gearbox Parts


Wikimedia Commons has media related to Renault R25.

Different Types Of Allison Transmissions

  1. ^2005 Renault R25. Ultimate Car Page. Accessed March 23, 2012.
  2. ^Renault R25. F1 Technical. Accessed March 23, 2012.
  3. ^'Top Gear' Episode 10.8 (2007). Accessed March 23, 2012.
  4. ^Fernando Alonso returns to his 2005 V10 Renault at Abu Dhabi.

Allison Gearbox Parts

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