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"Ira Anao" Custom Supercar
The product of a failed attempt at a MINI Coupe, this small car features full R/C capabilities, full suspension, and a 4-speed dual-clutch sequential transmission.
About this creation


Specifications

Propulsion: 1 x RC Buggy motor, from fast output
Steering: Front wheel with 1 x Servo motor
Drive Type: RWD
Transmission: 4-speed dual-clutch sequential with 1 x M motor and ďrace-styleĒ gear ratios
Weight: 0.87 kg (1.92 lbs, ~249 LEGO minifigs)
Length: 30 cm (11.8 in, 37.5 studs)
Width: 14.5 cm (5.7 in, 18 studs)
Height: 9 cm (3.5 in, 11 studs)
Power source: 8878 Li-Po Rechargeable battery box
Estimated part count: 600 pieces
Suspension:
--------Front: dual-wishbone independent
---------Rear: dragged axle
Build time: ~57 days


Short Description

The product of a failed attempt at a MINI Coupe, this small car still sports all the features of a normal supercar. It is fully motorized, with drive, steering, and a 4-speed dual-clutch transmission all controlled remotely.



The Original/Introduction



WellllÖ this is where things get a bit awkward. I was originally trying to make a MINI Coupe, but the ground clearance ended up 1 stud too little; and with no way to change that short of destroying a perfectly-good chassis, I elected to come up with my own car. Ladies and gentlemen, I present to you the Ira Anao.



Drivetrain



The drivetrain and the overall functionality of it was most of the reason I was reluctant to tear this thing apart and start anew. An RC Buggy motor supplies the drive through the fast (outer) output, which is then routed through a 4-speed dual-clutch sequential transmission at a 1.67:1 ratio. After that, the drive is put through a universal-joint into the dragged-axle rear differential.

The transmission is almost identical to my previous version, except the ratios have been changed from:

5:1, 3:1, 1.67:1, 1:1
to
2.08:1, 1.67:1, 1.25:1, 1:1

This idea in doing this was that the closer ratios would allow the car to accelerate into a speed than I would add otherwise. It actually worked pretty well, and I could change gears up and down almost like it was a real car.



Steering



Steering was an easy system but an interesting one. Itís detailed in the above photo, but to truly understand how it works, you should take a look at the video at the top of the page. Go ahead, I can wait.
Back already? Okay. The steering itself was controlled by a servo motor because of the fast response time and easy control. There was a little slack in the steering system but in the end it did the job.



Suspension and Chassis



Suspension couldnít have been much easier. The forward suspension was just a simple dual-wishbone using the parts from the 9392 Quad Bike and a single hard 6.5L spring for the elasticity. Rear suspension was a dragged axle Ė which I normally donít like to use, but tiny cars call for desperate measures.
The chassis was built in a unibody format with double frame rails, and the result was very rigid and relatively lightweight structure. Something to be used again in the futureÖ



Aesthetics



Because there was no subject vehicle, I was pretty much allowed free rein in designing the body. I suppose it looks pretty good overall, although something about the side profile looks a little off to me. Iím happy to hear comments on any aspect of it.



Reflections





Iím actually quite happy with this car. It looked decent Ė considering I designed the body Ė and I think I did a pretty good job with the functionality considering the space; despite the size, the car was still more functional than, say, a certain $300 2700 piece behemoth.

Next time, Iíll try to keep ground clearance in mind.

Enjoy the pictures!


































































































































Comments

 I made it 
  December 12, 2016
Quoting Ben L
I have considered instructions, but they would be very time-consuming to create due to my incompetence with Lego CAD programs. That said, I might eventually do instructions for a later model.
 I like it 
  December 10, 2016
Have you ever considered instructions? Would love em!
 I like it 
  November 8, 2016
Now that`s a proper MocOfTheDay! I wonder why I haven`t commented on this one before, It`s truly a great piece of engineering, and in addition it really looks good. Excellent work!
 I made it 
  November 8, 2016
Quoting Seaman SPb, Nick Barrett
Thanks a lot guys!
 I like it 
  November 8, 2016
Nice to see this quality piece of Lego engineering again. Happy MOTD!
 I like it 
  November 8, 2016
Excellent engineering work! Congrats on MOTD! :)
 I made it 
  September 20, 2016
Quoting Nick Barrett
Thanks!
 I like it 
  September 20, 2016
Some really clever technical solutions, and compact! Love your work here; the closer gear ratios were a nice idea.
 I made it 
  September 19, 2016
Quoting Chris Soon Kweon
Well, I had thought the body was original but as you're the second person to mention the Veyron, I guess there must have been some subconscious inspiration...
 I like it 
  September 19, 2016
Looks like Bugatti Veyron to me. Such a Master Piece!
 I like it 
  September 16, 2016
Awsome car!
 I made it 
  September 15, 2016
Quoting Nerds forprez, Nils O
Thanks a lot guys!
 I made it 
  September 15, 2016
Quoting Paulo D.
I think you might be the first person to point that out... : )
 I like it 
  September 15, 2016
I like how the title literally means "rage dwarf" in portuguese :)
 I like it 
  September 15, 2016
awesome!:D
 I like it 
  September 15, 2016
Wow, that's freaking awesome, so many functions packed into a rather small car. And it looks cool, too. Great job! :-))
 I like it 
  September 14, 2016
Personally, I think this is your best. The smaller size works well for this build and all the functions are just exquisite. Very good job.
 I like it 
  September 14, 2016
Same as the previous comment... very impressive technic work!!
 I like it 
  September 14, 2016
What a great build. I always envy you Technic-Builders. I could never build anything remotely close to this. 10/10
 I like it 
  September 14, 2016
Exellent design. Love the speed and overal looks. Well done.
 I like it 
  September 14, 2016
This is one of the best I've seen in some months! Not sure about calling your transmission a 4 Speed + Dual Clutch, but it is remarkable. Makes me remember the Bugatti Veyron. 5/5
 I made it 
  September 14, 2016
Quoting Greg 998
Thanks!
 I like it 
  September 14, 2016
Technicaly and aestheticaly excellent!
 
By Rage Hobbit
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Added September 14, 2016
 


LEGO models my own creation MOCpages toys shop "Ira Anao" Custom SupercarTechnic


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