MOC: Rally Car

[legomuppet9]

I have finally finished my latest MOC; a Rally Car.

Developed after my Supercar project failed, this MOC has the following features:

• Fully Independent Suspension
  
• Return-to-center Steering via an M Motor
  
• Rear Wheel Drive via an XL Motor (geared 1:1 through a differential)
  
• Locking Doors
  
• Fake V6 Engine
  
• Fully Remote Controlled
  

The Rear suspension is one I found on Youtube by Critycal Jess

It works pretty well, except the 12t Bevel gears transmitting the power into the axles do skip a bit when reversing/setting off making a pretty bad noise. But it is very compact for what it delivers and overall I am pleased with it. I attached an XL Motor onto the 24T of the Differential with a 24T gear, so the overall gear ratio is 1:1

The front suspension is the standard steered front independent suspension using the A

knuckle arms and Steering arm small (6571 & 6572 on Bricklink). The return to center steering unit is an adapted version of Sheepo's Type 1 (http://www.sheepo.es...er-systems.html) which then is fed to a gear rack 1x2 with ball joints (6574 on Bricklink) with an 8T gear. The result is a compact and reliable setup, also the same width as the rear suspension, which was lucky.

After developing the axles I then attached them together in a rigid chassis, incorporating the battery box, V6 engine and IR receiver into the design.

Then came, for me at least, the hardest part of the build; the bodywork. It took the longest to build but I am incredibly pleased with the result. This is the first time I have built bodywork like this in one single colour (apart from the door mirrors unfortunately) as it is the first time I've had access to enough parts. I am pleased with the shape and overall look of the bodywork. The weight is also pretty low too to help with the performance of the model and I like the "skeleton" effect by not filling in the gaps like the bonnet and roof etc, so you can see how everything is working, which I feel you should in a Lego model.

This is my favourite MOC so far which I have built, I am very pleased the looks and the performance, and it is fun to drive around and distress pets.

Pictures and Video:

Also, How do you like the edited photos? are they better than previous ones? (you can see them in my Flickr Photostream, link in my signature below)

Thanks to Sariel for the Photo Processing Tutorial, very useful and well explained (

http://sariel.pl/201...ssing-tutorial/)

Edited June 4, 2013 by legomuppet9

[piterx]

awesome dude! it reminds me of the oldschool style so much! i like it ^^

[legomuppet9]

awesome dude! it reminds me of the oldschool style so much! i like it ^^

Thanks think you get the prize for quickest reply ever...

[piterx]

ahah yeah i was just refreshing the page and it appeared ^^

[Doc_Brown]

Wow very nice! Great suspension, takes a beating for sure! do you use one of those little springy things to return to center?

Great job!

[Alasdair Ryan]

It's not very aerodynamic.

I am guessing you focused on mechanics over style.

[Edwin Korstanje]

Nice job and the looks are great old school

[legomuppet9]

@Doc_Brown: No I used sheepo's type 1, or the second one displayed in his article (link in main post).

@Alasdair Ryan: yeah I normally focused on mechanics rather than aesthetics :-)

@VFRacingTeam: Thanks :-)

[z3_2drive]

Absolutely love it! I never have the patience to make bodywork, mainly because I start building something new immediately

[legomuppet9]

Thank you :-) I normally don't have the patience but this time I preserved and it was well worth it I must say

[TheTechnicBuff]

I was thinking that maybe some of the grinding problems with the rear suspension could be improved by doing two things.

First, the thin bevels could be replaced with the newer 'double' style (part # 32270). They are stronger and less flimsy.

Then the gear ratio could also be increased. At 1:1 ratio the XL motor will be transferring quite a bit of torque through those gears.

I liked how you integrated the battery box vertically; I've never seen this in a MOC before.

Good work!

[legomuppet9]

I was thinking that maybe some of the grinding problems with the rear suspension could be improved by doing two things.

First, the thin bevels could be replaced with the newer 'double' style (part # 32270). They are stronger and less flimsy.

Then the gear ratio could also be increased. At 1:1 ratio the XL motor will be transferring quite a bit of torque through those gears.

I liked how you integrated the battery box vertically; I've never seen this in a MOC before.

Good work!

Thank you for your suggestions your ideas might work, I'll have a go at implementing them soon

EDIT: I have had a go with your ideas. The double bevel gears do help it quite a bit, but I think it may be a case of reinforcing that area as well. As for the gear reductions, I can't find a way of doing it unfortunately... I swapped the XL motor for an M Motor, and that solved the grinding, however the car was quite a bit slower so I've stubbornly returned to the XL motor

Edited June 6, 2013 by legomuppet9

[jojo1997]

I like your car but can you make it so that we can't see what's inside the car. Make some brics into the side so we can't see more.

It make a modell a little bit pretty.

maybe you can build a chassic like that

(Jako4001)

[legomuppet9]

3 reasons why I didn't.

1) weight

2)parts available

3) I feel you should be able to see what's going on inside a Technic model

[Paul Boratko]

Cool model.. Has a very nostalgic look to it..

Edited June 9, 2013 by Paul Boratko

[legomuppet9]

Cool model.. Has a very nostalgic look to it..

Thank you Paul, it was the look I was trying to pull off

[Someonenamedjon]

The body work looks MUCH better than my first try at body work.

I like how you made the spacing for the inner works!

Great job though!

[Junpei]

Nice rally car! Is that m-motor out of alignment though?

[legomuppet9]

Thanks Jon

twentyleggedhen: The M Motor is in alignment, I think it's just the angle