LIME
Simple vehicle created to test the RC unit and some other elements. Features suspension, 2-speed remotely controlled gearbox and on-board speed computer.
Datasheet:
Completion date: 24/09/2011
Power: electric (RC unit)
Dimensions: length 63 studs / width 41 studs / height 20 studs (not including antenna)
Weight: 1.314 kg
Suspension: full independent
Propulsion: 2 x RC geared 1:3
Motors: 2 x RC, 1 x PF Medium
Top speed: 13.8 kmph
I’ve had the LEGO RC unit for a while, but only one opportunity to play with it. So, when I bought a couple of the big Exo-force wheels, I decided to use them in combination with the unit and with the RC motors’ output selector that would act as a remotely controlled gearbox.
The vehicle consisted pretty much just of the RC unit with the steering attachment, two RC motors and the gearbox. The front suspension was based on the steering attachment, and the rear suspension used wishbone arms. The rear axle also included a differential for better handling, and was quite wide for improved stability. It should be noted that the vehicle was so low that it could drive upside-down with the antenna removed.
The vehicle also included on-board speed computer that measured speed just near the differential and showed it in RPMs, as it was unable to calculate the final speed for wheels of that size. I had to calculate the speed manually using the wheels’ circumference. The vehicle had no body whatsoever, and it carried two camera mounts: front and rear one.
The final performance, when tested outdoors, proved disappointing in terms of speed. The vehicle was able to go barely 13.8 kmph in perfect conditions. On the other hand it handled excellently and proved quite robust; it also attracted a great deal of attention from a number of wiener dogs. My final conclusion was that the gearbox was needless, whereas the differential was crucial. Without the differential, the vehicle was prone to doing unexpected U-turns when trying to turn at high speed.
@Ghone
Nope, their size is beyond scale.
I’m curious about the speed computer. Can you program it for 94,2mm diameter wheels?
@Ryuduck
It would go slower in a 4WD version. More weight, more moving parts, more friction.
nice model, for me the rc unit is THE BEST of rc 9v old motors because they are more powerfoul and faster then new power+functions
why didn’t you make the lime 4wd?
@Racer
No, RWD.
Was it 4WD?
@mindstorm addict
I don’t know what is the range of “normal” RC receivers, and it works fine with rechargeable AA batteries.
I dont know what by to build fast cars whith the rc motors…
Is the RC Race Buggy Battery / Receiver Unit with Auxiliary Output lighter than 2 power fonctions rechargeable battery and does it needs normal AA batteries. And is the range of reception of the RC Controller Racer Buggy bigger than for normals rc receivers
@EpicTechnic
You need to go there to click the “Ideas” category and see the various ideas for suspensions. You asked about suspensions. I recommend reading what you find in that category.
@Sariel
Yeah, Im not blind, but why do I need to go there? anyway forget about that. I was just suggesting an idea. Another question, do you recommend front and rear steering on a 6×6 like on the BMR?
@EpicTechnic
Dude, seriously… use your eyes. There is “Categories” list in the upper right corner of this website, that’s what I’m talking about.
@Sariel
to suggest an idea?
@EpicTechnic
May I suggest you look at the upper right corner of this website?
@EpicTechnic
abou the ideas catagory?
@Sariel
What do you mean?
@Liquid Snake
And I’m not really interested.
@Liquid Snake
For non-Polish speaking people: I asked Sariel if he could build Metal Gear RAY from Metal Gear Solid 2.
@Sariel
RAY Saber-Scorpiona to chyba jedyny ładny RAY z LEGO, a wydaje mi się, że można by go zrobić lepiej…
I istnieje lepszy REX od tego:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=65963
@Liquid Snake
Widziałem kilka całkiem ładnych wersji z Lego. Np. http://www.mocpages.com/moc.php/42001 albo http://www.mocpages.com/moc.php/3228
Witam!
Czy zna Pan może serię gier Metal Gear Solid? Mam pewną prośbą, a wydaje mi się, że jeżeli istnieje ktoś, kto może to zrobić, to na pewno Pan. Otóż, z tego co wiem, nikt jeszcze nie zbudował z LEGO (porządnego) modelu Metal Gear RAYa z MGS2. Jeśli nie grał Pan w tę grę, to może wystarczy zapoznać się z dostępnymi w Internecie zdjęciami lub filmikami z gry pokazującymi RAYa?
Z niecierpliwością czekam na odpowiedź.
@EpicTechnic
Did you try checking the Ideas category?
@EpicTechnic
—DON’T mean to bother you! sorry for the error!
@Sariel
Thanks! I love your creations! I am working on lego pneumatic engines, I hope to put one in a vechile of some sort and make it extremely powerful. Have you ever tried this? Again mean to bother you, But do you think you could post a suspensions tutorial? I would like some advise on steering with independent suspensions. I have one way, but it is pretty bulky and odd. Again I dont mean to bother you, but you are an amazing builder and I always look at this site when I am looking for ideas and tecquniqes(i dont think I spelled that correctly).
@EpicTechnic
http://shop.lego.com/en-US/LEGO-Power-Functions-Extension-Wire-8886
You need to buy this and 9V wire.
@EpicTechnic
Im sorry to be a bother but is it possible to post a picture of what you are talking about? also, do I need to buy 9v extension wire and pf wire?
@Sariel
I am a little confused by how that works, is ther a conversion wire or something?
@EpicTechnic
It works if you connect it through PF extension wire and 9V wire.
Hello, I want to buy a micromotor off bricklink, but I need to know if it works with the Power Functions battery box. If it does not,then i will not purchase it
@Michael304
Three are maximum, I think.
Hoe many motors can you add on RC unit
@TheTechnicKiwi
Yes, it’s clearly something like that. The RC unit was designed specifically to unleash the RC motors to their full power, it drains batteries pretty quickly.
geeat model
The thing that confuses me is the rc unit takes 6x aa batteries and the normal power functions BB takes 6 but can’t handle the rc motors… Is it the current limiters or what?
nice
@shawn
Of course.
I just completes a 2 NXT-motor transmission using the same basic idea, and quite a strong construction, so I suppose it can be done.
@shawn
Sure.
I was looking at your brickshelf folder, and I noticed that you got the 8435 4wd (not really) tow truck set! That was my first Technic set!
A bit off-topic, but could your 2-speed heavy duty gearbox easily be adapted to a 2 NXT-motor design?
@Zach
There are links in the description, just click them.
what set are those wheels from 🙂
@Arnau
Well, it has one more output than you thought.
Very nice. How did you connect the motor for the gearbox to the RC unit? I had always thought it only had enough outputs to be connected to the steering attachment and to the RC motors. And anyways, I also thought that the remote only had two joysticks, for steering and for driving.
Thanks
No.
Nice
is there a review of smyk’s vehicle too
@Sariel
Thanks 🙂
@Matt
It was designed for the main RC receiver back when Power Functions did not exist. It can be used with pretty much anything though.
Great model, and one quick question;
does the RC steering unit have to be coupled with the RC main receiver unit or can it be used only with Lego power functions?
Thanks
you need stronger frame, suspention isnt working quite well. its mostly the frame twisting
Nice!
Cool xD