big rock

  1. Non-stop bashing and big jumps at The Pit!

    Non-stop bashing and big jumps at The Pit!

    We had a beautiful and fun day at a local sand pit with a lot of bashing, crashing and jumping with various Arrma 1/5, 1/8 and 1/10 scale RC cars. These RC c...

    Big Rock Out of curiosity

    Has anyone found a way to widen the stance of the BRCC V3 without using hub extenders? I really like that some of the 4S rigs come with a sway bar for the rear A-arms. Just wanted to know, as I’m maxing out my Big Rock as much as possible and will be adding to the build thread shortly. Will...
  3. Arrmas in Bashing Paradise (Finland)

    Arrmas in Bashing Paradise (Finland)

    Arrma Kratons and a Big Rock in Bashing Paradise in Southern Finland (October 2022). This is my favorite place for bashing with my Arrmas. The place is big, rough and awesome!
  4. Dazzler66

    Big Rock armma big rock steering issues

    Hi everyone, I am a complete newbie and not very technically astute. I purchased a Armma Big Rock today and just took it out for a rip around the woods, great fun! But I have noticed that even when I am not turning the steering it is very subtly turning to the left and it’s really bugging me as...
  5. Joeysly

    Big Rock V3 shocks and bottoming out

    Hey everyone! I haven't touched an RC car in almost 30 years and just recently picked up a Big Rock. Bashing and launching is what I hope to be doing most, but I noticed that out of the box the BRCC bottoms out from even 8 inches off of the ground. For bashing what are the best shocks to run...
  6. BO55_Saint

    Big Rock Big Rocks Roll Out!!!

    Finally found time to do this overdue build thread. I've had my BRCC for 4 months now, actually feels longer, and I have done quite a bit to it. Some of my early upgrades were just because others on the forums had done it but as I drove the car more I learned what it was and wasn't capable of I...
  7. B

    Big Rock Big Rock!! Big Beast!!

    Man, this thing is running amazing!! It’s that special moment when you finally understand how to properly maintain diffs, proper oils/shims…and get the mesh perfect!! She runs quite as a mouse and fast!! Have the duratrax stakkers on the feet/oucast 4s shocks…20 weight in the diffs, 15 tooth...
  8. ScottyB

    Big Rock Big rock 3S v3 won’t go when pushing something or trying to climb over stuff.

    Stock 3S Big Rock won’t move when I try to do something like rock crawl or push something. The battery is full. It runs fine on flat ground, grass, road, etc. But even the SLIGHTEST resistance against it, it won't go. I've stopped it on the incline in my front yard that goes over the septic tank...
  9. J

    SOLD / FOUND Big Rock Springs / Shocks

    Hoping to find rear springs off a BigRock shock from someone upgrading. Really just need the springs but may take the whole shock assembly as well. Or maybe consider the upgrade myself if someone has a set of 6s shocks. Thanks!
  10. S

    Big Rock Arrma Big Rock V3 Hot Racing Servo Saver Issue

    Hello! I have a Arrma Big Rock V3 that has been heavily upgraded. I purchased a Hot Racing Servo Saver attached with a plastic 23T (spline adapters for 23 tooth (KO, Sanwa, JR)). On the cars first crash the 23T spline adapter that is made of plastic broke. Do they sell a metal spline adapter...
  11. L

    What is the most efficient RPM for a brushless motor?

    Hey everyone! I'm curious to know what the most efficient RPM range is for brushless motors. I am trying to build a big rock right now, and I want it to run cool on grass with a top speed on packed dirt/pavement of 60+mph. I've done some research, and I've realized that the more watts the...
  12. L

    Big Rock Motors, Amps, KV, help please!

    Hello all, So to sum this up, I've been trying to make a very over powered big rock for a while now. I started with a TP 4050 2830kv D wind on 4s. It had a ton of power, but overheated too quickly, and really heated up the esc as well. I then tried an old Castle 1515 2200kv on 4s with a 24...
  13. CircuitDragon

    Big Rock Big Rock Steering issue / Possible ESC?

    I have done a lot of Google searches, and even YouTube videos. Some people have reported nearly the same issue, but either the problem was the servo, or they never mentioned a fix. Here is my issue. I noticed the steering suddenly was sluggish, and at times unresponsive. By this I mean I could...
  14. R

    traxxas tires on big rock v2? (14mm)

    Im running a stock Arrma big rock bought 2 years ago, made some modifications but now my front tires are broken (cannot be used anymore, not even the rims). The only ones with 14mm on sale locally are the Traxxas 5877, they look pretty much like the ones found in the slash and slayer 4x4, i know...
  15. BO55_Saint

    Big Rock Amazon special servo in reverse

    I purchased the Amazon special 25kg servo for my BR (they finally sent the correct one) I've fitted it into the car, however the steering is reversed. I have adjusted the switch on the remote to fix this but I would like to know if its something I've done wrong and can it be fixed without...
  16. Bekant

    Big Rock SWB Big Rock

    Been thinking about converting my Big Rock V3 into a SWB for a very long time! The other day the rear input gear broke and I figured I might as well pull the trigger and order the SWB chassis to make it happen. This will turn it from a wheelbase of 327mm/12.87" to a wheelbase of 287mm/11.3"...
  17. S

    Big Rock Arrma Big Rock BLX V3 Motor Upgrade

    Hello! I am a complete newbie to the sport and looking for suggestions on what motor I should use. I recently purchased a Big Rock BLX V3 and upgraded almost everything with Hot Racing parts, M2C Racing, T-Bone Racing, and Spektrum. The car is upgraded tough and the only main factory item I...
  18. L

    Big Rock Smaller Spur Gear

    Hello all, I was wondering if anybody makes a smaller spur gear for the Arrma 3s line. Thank you!
  19. J

    Hot racing long arms

    Looking into the hot racing king arms for the big rock but can’t find any info on anyone who has used them. Much thanks for any help
  20. L

    Help deciding between TP 4050 and 4060

    So I am currently trying to build a really efficient Big Rock 3s. I want about 60mph with basically no heat for a full 5000mah pack. Right now I am running a Castle 1515 on 5s (1 2s and 1 3s in series same specs) getting around 54mph and motor temps around 145 at the end of the pack. This...