Big Rock Big rock upgrades

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gazktm660

Active Member
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Arrma RC's
  1. BigRock 4x4
  2. Talion
Hi everyone,

After my rubbish driving skills and a few failed bad landings with broken parts I decided to upgrade my big rock..

This Is my first arrma and my second lipo rc, its certainly my favourite truck and won't be the last, this ones staying!

First pics of the new truck!
20220118_092909.jpg

20220118_092845.jpg

After reading through some pretty amazing builds I was inspired to make mine better, starting with the suspension as I bent a shock shaft..

I got the kraton 6s front shocks for the rear and mojave 6s front shocks for the front, I'm running 80 weight shock oil all round which works well.
Also needed the axial bushings for top mount and spacers/washers for bottom mount to clear drive shafts, longer screws used..
20220121_144646.jpg


I added the outcast 4s wing and mount it looks awesome while protecting the body👌

Arrma 3s cvd sliders were next on the list due to popping a rear drive shaft out, although once installed they seemed too short to use with the big rock wider arms. I ended up getting the 4s cvd sliders as they are longer and used the 3s inner wheel hub slider with the 4s diff outer slider, they both require cutting to fit but easy enough to do, I used a small hacksaw. Front drive shafts are stock.

I also put new rpm arms front and rear after I broke a front stock arm, will see how these hold up..
20220121_144638.jpg


Whilst stripped down I cleaned and added 30k diff oil front and 15k rear they were both low from the factory, all screws checked/thread locked.


The finished look!
20220121_144811.jpg
20220121_144850.jpg

😍

The truck runs and jumps great now, more plush, stable, smoother and wheelies for ever!

Will upgrade as parts fail now to make it stronger as this is my go to basher, although a 4s capable esc/motor would be fun 🤣

Definitely my favourite

Cheers Gaz
 
OK, couple more upgrades..

This is my jump basher and I take this one to the skate park, bike tracks, fields, roads pretty much everywhere! I decided on the motor mount support thanks @pug
Also granite 3s bumpers front and rear, the front is loads beefier and stronger, the rear gives a bit more room for the bigger shocks..
And finally skid protection, the skate park is brutal on the body!!

Couple of pics 😎
20220319_095859.jpg
20220319_094801.jpg
20220319_094753.jpg
20220319_094820.jpg
 
Hi everyone,

After my rubbish driving skills and a few failed bad landings with broken parts I decided to upgrade my big rock..

This Is my first arrma and my second lipo rc, its certainly my favourite truck and won't be the last, this ones staying!

First pics of the new truck!
View attachment 199674
View attachment 199675
After reading through some pretty amazing builds I was inspired to make mine better, starting with the suspension as I bent a shock shaft..

I got the kraton 6s front shocks for the rear and mojave 6s front shocks for the front, I'm running 80 weight shock oil all round which works well.
Also needed the axial bushings for top mount and spacers/washers for bottom mount to clear drive shafts, longer screws used..
View attachment 199679

I added the outcast 4s wing and mount it looks awesome while protecting the body👌

Arrma 3s cvd sliders were next on the list due to popping a rear drive shaft out, although once installed they seemed too short to use with the big rock wider arms. I ended up getting the 4s cvd sliders as they are longer and used the 3s inner wheel hub slider with the 4s diff outer slider, they both require cutting to fit but easy enough to do, I used a small hacksaw. Front drive shafts are stock.

I also put new rpm arms front and rear after I broke a front stock arm, will see how these hold up..
View attachment 199681

Whilst stripped down I cleaned and added 30k diff oil front and 15k rear they were both low from the factory, all screws checked/thread locked.


The finished look!
View attachment 199686View attachment 199687
😍

The truck runs and jumps great now, more plush, stable, smoother and wheelies for ever!

Will upgrade as parts fail now to make it stronger as this is my go to basher, although a 4s capable esc/motor would be fun 🤣

Definitely my favourite

Cheers Gaz
Sorry for reviving and older thread. I'm wondering if you can explain more on what you had to do to make the 4s CVD's fit?
 
Hey, so I decided to change the big rock up and have built a wide arm senton!
Upgrades RPM arms, 6s shocks, cvds etc still on.. added proline trencher lps, senton body mounts, bumpers front and rear, senton body, 20t pinion, extra fan on motor and scorched rc inner fenders.. take a look 👍
20221102_140524.jpg
20221102_171833.jpg
20221102_171807.jpg
20221102_171817.jpg


20221102_171825.jpg


20221102_172122.jpg
 
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