kbalage

Thank you everyone for the kind words :) @mocbuild101 I really like the Technic guys as well, try to involve them in all of my videos :) About the next set to "BuWizz-a-fy" (will put this in my signature probably, love it), there'll be more than one - small scale + big power - pure fun ;) @technic_addict as it was mentioned I added the second unit because the single BuWizz + 2 buggy motors combination did work only indoors, not on gravel or dirt. When the motors were stressed the protection of the BuWizz unit kicked in. @Leonardo da Bricki if you have a second buggy motor you can try with 2 AAA battery boxes. Will be somewhat heavier and you won't get the maximum performace of the motors but worth a try. The IR receivers will probably take the place of the seat though..

@Kryne thank you! I made a second much lighter version with buggy motors: Originally I didn't want to remove the tracks but I was asked to test it, so a version with wheels is in the works, too :)

This set was sitting on my shelf for a while, but the time has come for some RC upgrades :) First of all I had to swap the original engine with a V8, it was a perfect fit. Installing the 2 buggy motors was not that difficult either. I tried to get the drive from the buggy motors to the fake engine but that didn't work due to some space constraints, so another M motor was added to power the V8. Tested first with one BuWizz unit, but the stress was too high on rough terrain so I added another unit to independently power the 2 buggy motors. This caused some issues with the weight distribution - the car is not easy to navigate as the back is much heavier - but it can start with a moderate wheelie now :) List of modifications: - Engine swap - Body panels adjusted, frame modified to fit the M motor and the Servo, added roll cage to support & protect the BuWizz units - added front grille - Added 2 buggy motors, M motor, Servo, PF lights, 2 BuWizz units

Wow, really cool vehicle and clever positioning of the electronic parts :) I still wouldn't do that, water and mud is waaay to close to the valuable parts for my taste :)

I think Speed Champions-style and other minifig-scale vehicles should find their home in this new forum. At the moment they are posted in the Town forum but they get lost easily. A small scale model can still be a model - smaller representation of the original object - although due to the limitations of the building material (lego pieces) at that scale not all functions can be presented in a fully functional way. If the intention is to replicate the original look, then I think it can be treated as a scale model.

A very impressive MOC with amazing level of details, congratulations! I'm just curious - I saw your other video where you mentioned that using XL motors was not as effective as the buggies, did you use 4 XLs previously with the same drivetrain? It's hard to believe that the geard down buggy motors would provide better climbing abilities than the XLs.

I'd like to share my second 42069 RC mod. It's called 42069 Superleggera, as the aim was to streamline the body and remove all non-vital components, while adding 4 buggy motors and 2 BuWizz units for maximum speed :) The vehicle became a single seater tracked pickup, and it's pretty fast for the size. It's fairly sturdy too, you can see it in action in the video:

I contacted the BuWizz guys, they will have a look on the issue. @jrx it's interesting if you can power 4 buggy motors with a single BuWizz unit, as I see in your video they're geared down drastically. I usually use them for high speed cars, in those scenarios 2 buggy motors can already overload a single BuWizz unit.

Video with partial instructions is published: It contains detailed instructions for the 2 axles and some hints about the M motor placements. Please note that the images were taken during the disassembly, so the steps might not be very logical. Since I took apart the set and started another mod I won't be able to provide any further instructions for this one. If you're looking for 3d files and/or better instructions I suggest to follow this topic, it already has some great content and I'm sure it will have more as others will share their mods.

I noticed a strange behavior with my BuWizz units and the Android app yesterday - if I try to configure the app to control the 2 units simultaneously (Mobile crane profile), the app messes up the controls, e.g. if I configure only 1 unit with a slider or the joystick and the other unit is not yet configured, it still controls the outputs of the second unit as well. Tried this on iOS, I could not replicate the problem. Tried to reinstall the Android app but the behavior is still the same. Single unit profiles seems to work ok. If there's anyone with 2 units and an Android phone, could you please test if the mobile crane profile works for you? Not sure if the app was changed recently as my phone said it was updated 3 days ago, but the changelog in the app says the latest update was in June.

@Joey73 I'm not planning to make a 3d file, sorry. I disassembled partially the set, took a series of pics of the axles and some additional ones of the internals. I'll compile them and create a short video, hopefully this week.

Building instructions and inventory uploaded to Rebrickable: https://rebrickable.com/mocs/MOC-9329/kbalage/bmw-wr-1000/

@Joey73 I replied to your pm. @BrickbyBrickTechnic I'm not planning to do instructions as it was an ad-hoc modification, my aim was to install the motors by simply removing and replacing the manual components and without the need of taking the model apart. I will disassemble the model in a couple of weeks as I'm planning another mod, I can take some more photos of the internals if it helps.

Thanks guys :) @JJ2 - I re-used the setup created for my Star Wars motors scene, you can check it in the following video:

Roads? Where we're going, we don't need roads. high res on Flickr

@Joey73 these are only the PF components and the SBricks, you'll need some extra elements as you'll need to rebuild the axles with the L motors, and some gears and stuff needed to fit and connect the M motors. I don't say it's not possible only with the parts from the set, you can give it a try :)

@jrx I need to restart the BuWizz units and the app frequently as I'm usually running the units on the edge with loaded buggy motors so I'll need both running :) Not to mention the Sbrickcontroller app to be able to use a gamepad for all these :D

I'm eagerly waiting for the editable profiles in the BuWizz app, it's a pain in the @ss to use the one and only profile configured for 2 units and try to play virtual piano while controlling my car :/ Despite the extra weight and the need to run both apps i think I'll use SBrick to control BuWizz until some major update arrives.

@jrx I'm using Android

@jrx I did my tests today and it works with the high output through SBrick as well, thanks for the heads up! :) I did not manage to make this work previously, not sure why. What I noticed is that you need to start the BuWizz profile, and move the slider/joystick after changing the speed in order to really change the output level and then switch to the SBrick app.

That's weird, I tried something similar previously (although with an older version of the app) and measured the RPM output of the motor, with the SBrick it stayed the same regardless of the setting in the BuWizz app. Thanks for sharing this, I'll redo some tests tomorrow :)

A new blogpost is published with more pictures of the added components, might help you if you'd like to create your own version: http://racingbrick.com/2017/08/lego-technic-42069-rc-mod-power-functions-sbrick/

Thanks everyone! @Paknaloid to be honest I wanted to motorize the doors as well, but I had to realize that my 2 SBricks only have 8 channels altogether, and I already had to combine the two front L motors and only had one switch to change the direction.

Thanks for the nice review Jim! I'm still jealous every time I look at your fantastic photos, those colors really pop Regarding the set I share your view, AFOLs are not the primary target for it, but it's a great and appealing set for kids who want to build something bigger after the Technic pullbacks :)

Updating the first post to have all three RC mods in one place. 1st version - Power Functions motors & SBrick control This is a quick and dirty upgrade, it started as a test to see if 2 or 4 L motors can drive the set properly, but things escalated quickly :) The aim was to add the PF components without taking apart the set completely or to change original structure, so obviously there are more elegant ways to hide all the motors and to upgrade the suspension and the drive train. The list of the added elements: 4 PF L motors (drive) 1 PF Servo motor (steering) 3 PF M motors (functions) 1 PF switch 2 8878 Battery boxes 4 PF lights 2 SBricks The 4 L motors can drive the car, but it has no extraordinary performance due to the added weight. The servo motor is struggling sometimes (especially when the car is not moving), it'd need another servo motor or some other solution for the steering to work smoothly. 2nd version - pickup-style body, 4 buggy motors, 2 BuWizz units After the first attempt I wanted to build something faster, so I had to reduce weight and add more power :) The back part of the truck was removed, I removed also a lot of non vital elements (like the fake V8). 4 Buggy motors were added and they were powered by 2 BuWizz units. The results was pretty fast considering the tracks and could handle the obstacles well. 3rd version - tracks removed, wheels added, pickup-style body, 4 buggy motors, 2 BuWizz units This is my third and last Lego 42069 Extreme Adventure remote control mod. After the previous version I did not plan to create another one but I was convinced by some comments on my YouTube channel (thanks for the tip!). Although I really liked 42069 on tracks, I realized that the top speed was limited by the construction so the 4 buggy motors could not show their full potential. I removed the tracks and added the wheels from the 9398 Crawler set. The pickup-style body was kept from the previous mod to ensure the car is as light as possible. The axles were rebuilt completely to fit the buggy motors and the wheels. The car is driven by 4 buggy motors and there's a PF Servo for steering. It is controlled and powered by 2 BuWizz units. It became surprisingly fast, I was curious so I added a small GPS tracker to measure the top speed - you can check the result in the video :)