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CVT Offroader
My second vehicle to feature a CVT. Features a special alternate version, a CVT with a remotely adjustable slip point, AWD system with a central differential, and two suspension systems on each axle.
About this creation
Propulsion: 2 x L Motors
Steering: Front wheel, 1 x M Motor
Drive Type: AWD with central differential
Transmission: CVT with remotely adjustable slip point and 1 x M motor
Weight: 1.5 kg
Height: 19.5 cm high
Length: 43 cm long
Width: 23 cm wide
Power Source: 7.4v 8878 Li-Po Battery Box
Estimated part count: 1200 pieces
Suspension: Front axle: Live axle with dual-wishbone independent
---------------- Rear axle: Live axle with dual-wishbone independent
Opening doors
Special alternate version

Click here for video

Itís been another two months since I posted; however, I do have an excuse this time. There was a highly experimental vehicle which began production just after my 2017 Ford GT was posted. Needless to say, it failed and in the process wasted a month of my time. Anyway, I present to you my CVT Offroader, more of a ďproof-of-conceptĒ vehicle than anything else.

To explain: my CVT Offroader was built to test two concepts, the first of which was a CVT with an adjustable slip point. Most (actually, all) friction-based Lego CVTs switch gear when a predetermined amount of friction is exceeded on the output. The frictional limit - referred to here as a slip-point - can be modified by adding more friction gears or rubber restrictor parts. A CVT using this concept can be found here .

The idea behind the CVT in this vehicle was to have a remotely adjustable slip point. In other words, I wanted to be able to change the frictional limit remotely, essentially turning the automatic CVT into an infinity-speed sequential transmission. This was done by using a small rubber Lego part, locked by a set of two worm gears, which would press onto a wedge-belt wheel that was acting the part of the friction gear. The transmission was not that noticeably different from a normal CVT in this application; I believe that to try out the full potential, I will have to eventually use it in a sports car.

The second experimental concept used in this car was the dual suspension system. I was actually crazy enough to put TWO suspension systems on each axle, pairing up a live axle and dual-wishbone independent on each axle. The funny thing is, it actually worked pretty well. The live axles accommodated for side-to-side tilt, and the independent handled shock absorption, which overall made for my best suspension system(s) ever. I do however believe that the same effect could be garnered from pairing a pendular system with dual-wishbone independent.

After looking at the pictures below, be sure to see the second half of this post as it contains something rather specialÖ




















































CVT Offroader: Post-Apocalyptic Edition

Nothing needs to be written here, the pictures (and video above) say it all.











Comments

 I made it 
  September 8, 2015
Quoting LukeClarenceVan The Revanchist Dude! I admit that I don't know a thing when it comes to cars, but I do recognize brilliant LEGO engineering when I see it. This is quite phenomenal, the complexity of your design has me shaking my head but the results prove the effort was worth it. The suspension is incredible, as is everything about this build. Top-notch work.
Thanks a lot!
 I like it 
  September 8, 2015
Dude! I admit that I don't know a thing when it comes to cars, but I do recognize brilliant LEGO engineering when I see it. This is quite phenomenal, the complexity of your design has me shaking my head but the results prove the effort was worth it. The suspension is incredible, as is everything about this build. Top-notch work.
 I like it 
  September 7, 2015
Very nice! Your CVT transmission is a brilliant piece of design, and the car's great too.
 I like it 
  September 6, 2015
Marvel piece of engeneering!
 I like it 
  September 5, 2015
Sorry for my short comment, I just want to note that this thing looks great!
 
By Rage Hobbit
Add to my favorite builders

8
people like this. See who.

2,233 visitors
5 comments
Added September 5, 2015
 


LEGO models my own creation MOCpages toys shop CVT OffroaderTechnic


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