![]() ![]() To make a 4x2 with only 3 driving rings, you would need to either make gear op 1:2 between the cross/towball and the orange catch to make the quarter rotation from the towball into a half rotation, or use the traditional red catch and some lever mechanism (which would still require gearing up) How do you mean your design uses four driving rings as well from the pictures? Correct me if im wrong, but yours works by having a 4 speed on one side, which is then routed through a second gearbox which only has two effective ratios, making it a 4x2 effectively? The chiron does exactly the same AFAIK. To finish, a modelization of the mechanic to have a clearer view of the gears:įinally, this is an extremly compact gearbox, easily controllable. To control this gearbox, I used the stepper of the Bugatti Chiron that I compacted a little bit (the piece in red). After some tries, I got a good result, and a perfectly controllable gearbox. Then I put the number of teeth of the gears I may use in the cases, and I got the final ratios of the gearbox. So in Excel, I recreated the structure of the gearbox using cases in the calculations (for example F3*G3/F4*G4). This means the 6th gear (2-2) must not to be lower than the 4th gear -1-4) or you cannot control the gearbox properly. Little trick: when you make a double gearbox like this, it's important to be sure that the gears are in the right order. So to change the speeds from the lowest ratio to the highest, the 4 speed gearbox does 1 2 3 4 while the 2 speed gearbox is in first gear then the 4 speed gearbox activates the second speed of the 2 speed gearbox, and it does 1 2 3 4 again. When the changeover catch of the 4 speed gearbox makes one turn, it activates the one of the 2 speed gearbox. There are 2 advantages: firstly the gearing is more compact, and then the shift system is also pretty compact. So I decided to couple a 2 speed gearbox to a 4 speed gearbox. My purpose was to make a gearbox as compact as possible. It's a gearbox I made at the release of the rotary changeover catches. We havee many options available with the 60G including the same specification as when bought sirect from Quaife, please contact us at 028 7962 7282 for more information.I made it almost a year ago, but I didn't have the time to make its presentation. You may also need a new driveshaft along with this gearbox. We have now sold over 1200 Quaife 60Gs worldwide, this has to be a testament to how good these Gearboxes are. ![]() This gearbox specification is specific to C Bradley Motorsport with needle roller output shaft, special Heavy Duty Detent Mechanism, Quaife engineered C Bradley Spec long length gear lever with shorter throw etc. Weighing just 38kg, the 60G is ideal for rally and race use in MK1 and MK2 Ford Escorts, Ford Sierra, Caterham, Westfield and numerous rear wheel drive kit cars. This produces a positive, ultra-fast gearshift - an optional flatshift or Quaife approved 'intelligent' semi-automatic paddle shift is also available.įree running gears are supported by needle roller bearings to ensure a robust geartrain, while a choice of ratios and numerous gear lever position options allows customers a wide scope for optimising 60G to suit their individual requirements. The 60G features a modular gear cluster, allowing easier interchangeability of gear ratios and fewer moving parts, while a drum type sequential gear change system is allied to an open face dog design on both gear and drive disc. The Quaife 60G 6-speed heavy duty in-line RWD sequential gearbox is a direct replacement upgrade for the Ford Type 9 transmission and since its launch in 2008 it has become the market leader in this sector.Ī high strength 80mm shaft centre design with all alloy casings enables the 60G to handle up to 375bhp, yet it can be installed into a MK1 / MK2 Escort or Caterham 7 without any transmission tunnel modifications. Quaife 60G 6 Speed Sequential Gearbox with Long Lever Needle BRG Type ![]()
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