A 1:10 scale model of Ford’s (currently) not-yet-released supercar, featuring a unique 8-speed sequential transmission, full RC capabilities, and a motorized rear wing among many other functions.
About this creation
Propulsion: 2 x L Motors Steering: 1 x M Motor Drive Type: RWD Transmission: 8-speed sequential with integrated auto-clutch, controlled by 1 x M Motor Weight: 1.84 kg Height: 12 cm high Length: 48 cm long Width: 20 cm wide Power Source: 7.4v 8878 Li-Po Battery Box Estimated part count: 2600 pieces Suspension: Front axle: Dual-wishbone independent
---------------- Rear axle: Dual-wishbone independent Ackermann steering geometry Opening butterfly doors Motorized rear wing with ratchet mechanism Working steering wheel Working V6 piston engine
It has been a little while since I last posted - 2 months-, but I’m quite happy with the final product and I hope you find the wait to have been well worth it. Anyway, here I present to you my 1:10 scale model of the 2017 Ford GT; at the time of this writing, a concept vehicle scheduled for release next year. I’m also trying something new with this post by highlighting key terms, so that you can skim the post and yet still get the general idea. We’ll see how it works.
Fifty years after the original Ford GT40’s 1-2-3 victory at Le Mans, Ford intends to release their third iteration of this iconic vehicle. By compiling information from all over the internet (necessary due to the lack of blueprints) I have managed to recreate this vehicle to my satisfaction, just in time to commemorate Rage Hobbit Sr.’s 16th birthday and my (meaning both myself and my younger brother) second anniversary of building with Lego Technic.
The original vehicle was first shown at the Detroit Auto Show in January 2015, where it stunned audiences and ensured that it would see serial production the following year. The photos released into the internet made an impression on myself and my Rage Hobbit Jr. and we immediately elected to recreate this vehicle as our next large-scale supercar. It took a little while before I (sorry for all the changing pronouns… consider “I” from here on to mean “we”) got around to it, and the actual building process took longer than usual due to rather insufficient photos and information on the real vehicle.
The highlight of this model is definitely the custom 8-speed sequential transmission; a design partly inspired by the SVT Raptor’s transmission. The design is completely original and is not based at all on Sheepo’s excellent transmission, and the relatively small size makes this model the only 1:10 scale Lego Technic car to feature an 8-speed sequential transmission as of the time of this writing. It is based on my basic 4-speed sequential transmission - which can be found here - except it has another 2-speed transmission (with ratios of 1:1 and 1.25:1) as the input that shifts twice for every gear shift of the 4-speed transmission. This creates 8 separate gears within the transmission, with the following ratios:
Having a 2-speed transmission as the input, synchronized with the 4-speed, meant the 2-speed actually served the dual-function of acting as an auto-clutch. This entirely eliminated the need for an external clutch, making the whole assembly somewhat smaller. As a side note, I will soon be posting pictures and instructions for the transmission.
The drive was controlled by two hard-coupled L motors geared 1.67:1 into the transmission. This was about the optimal ratio for a vehicle of this size and weight, as the motors were only moderately stressed on gear 8. Steering involved a working steering wheel and the usual M motor geared 9:1 . I also added Ackermann geometry, more as a technical highlight rather than for the added performance.
A new feature I added to this vehicle was the deployable rear wing. It was connected directly to the rear axle’s drive, and was powered using a ratchet mechanism. The ratchet mechanism allowed the wing to extend while driving forward and stay fixed in that position, but after driving backwards for a second or two the wing could be pushed back down. I briefly attempted adding an elastic to the wing to pull it back down upon driving backwards, but it proved to create too much extra strain on the drive motors.
It was the aesthetics - again - that accounted for two-thirds of the 3 month build time on this model. They weren’t perfect, but I believe the model to be recognizable (if you’re aware it’s not a McLaren). The transmission worked surprisingly well considering it was the first of its type that I’ve built. Overall, the model was an interesting and enlightening build, and I will certainly incorporate some of the components into my next large scale supercar.
Excellent engineering. Good looking (although not quite perfect), yet with incredible functions hidden within - eight gears!!! 5 stars, it's a huge step up and surely means you're now amongst the best supercar builders around : )
I`m looking forward to see that gearbox design, the looks are a just a tad heavy, but thats my opinion, I think in techics you sometimes have to chose for a more sugestive body, in stead of filling up every space. But hey, that photo from the top, is just excellent!