Recommended Arrma 4x4 Mega Upgrades

slick2500

If it ain't broke, you're doing it wrong.
Community Leader
Premium Member
ArrmaForum Fan
Excellence Award
Build Thread Contributor
Messages
15,277
Solutions
6
Reaction score
17,097
Location
Rapid City, SD
Arrma RC's
  1. Outcast 6s
  2. Senton 3s
  3. Typhon 3s

httuner

Member
Messages
9
Reaction score
6
My son has a Senton Mega. We are upgrading his brushed motor to brushless and his servo is shot so we need to replace that also. Would like to replace with one with metal gears instead of the stock plastic. I see the one you recommend is 25 tooth and his has 23. What are my options?
Spektrum makes a S6020 for like 32-33 dollars with metal gears. I replaced my son's Senton with it and so far it's doing great, has 23teeth. Plug and play.

https://www.spektrumrc.com/Products/Default.aspx?ProdID=SPMSS6020
 

slick2500

If it ain't broke, you're doing it wrong.
Community Leader
Premium Member
ArrmaForum Fan
Excellence Award
Build Thread Contributor
Messages
15,277
Solutions
6
Reaction score
17,097
Location
Rapid City, SD
Arrma RC's
  1. Outcast 6s
  2. Senton 3s
  3. Typhon 3s
May have missed it....but can the stock 550 motor handle a 0.8 conversion on 2s?
I want to say yes, but people burn up the stock 550 motor with the stock gearing on 2s so 🤷‍♂️
 

leadbyexample2

Active Member
Messages
25
Reaction score
17
Location
Michigan
Arrma RC's
  1. 4x4-Mega
I know the 550’s aren’t the best, Eventually going brushless with the mod anyway. It’s a toss up, 0.8 mod and burn out the engine, or brushless and burn out the gears! Lol
 

slick2500

If it ain't broke, you're doing it wrong.
Community Leader
Premium Member
ArrmaForum Fan
Excellence Award
Build Thread Contributor
Messages
15,277
Solutions
6
Reaction score
17,097
Location
Rapid City, SD
Arrma RC's
  1. Outcast 6s
  2. Senton 3s
  3. Typhon 3s
I know the 550’s aren’t the best, Eventually going brushless with the mod anyway. It’s a toss up, 0.8 mod and burn out the engine, or brushless and burn out the gears! Lol

I still want to stick a 775 and WP880 in one once just to see how long it lasts.
 

Velodromed

Premium Member!
Premium Member
ArrmaForum Fan
Messages
563
Reaction score
364
The Arrma 4x4 Mega Granite/Senton is a pretty solid platform out of the box, but like most any other RC there are some weak points that can certainly be improved upon. Below we'll look at a few of those weak points and provide alternatives to fix said points.

If the Arrma Mega 4x4 is your first RC then there are going to be a few things you'll need first.

Required items for an Arrma 4x4 Mega



Batteries - The Arrma 4x4 Mega supports either a 7 cell NiMh or 2S LiPo battery pack.

My recommendation would be to go with a 2s LiPo pack and would suggest checking out SMC LiPo battery packs. However if you are looking for a list of suggested brands check out our "Budget LiPo of choice" thread.

LiPo Charging Sack - If you are going to go with a LiPo battery you MUST use a LiPo charging sack. These things are silly cheap and offer a huge amount of protection in the event a LiPo starts to go south.

*If you are not using a LiPo battery you can forgo getting a charging sack*

Battery Charger - For someone getting into RC and looking for a good bang for their buck, I would recommend checking out the Dynamite Prophet Sport Duo charger. It will easily charge dual 2S LiPo or 7 cell NiMh packs at the same time allowing you to get back to racing/bashing quicker.

If you want other suggestions, check out our Recommend me a battery charger thread.

4x AA batteries - The 4x AA batteries are used in the transmitter that is included with the Arrma 4x4 Mega trucks. I'm would recommend getting Eneloop rechargeable batteries. Either the Panasonic Eneloop or Eneloop Pro (higher capacity, longer run time).


That about wraps up the required items, now onto the recommended Arrma Mega 4x4 upgrades!

Most Recommended Upgrades for the Arrma 4x4 Mega



Servo - Soon after the Granite/Senton 4x4 Mega trucks was released, several people reported issues with the included servo.

An inexpensive upgrade would be the Savox SW-0230MG servo which has metal gears, faster and MUCH stronger than the stock servo - and it's also waterproof. A near bulletproof upgrade (maybe even a bit over kill ;)) would be a Savox SW1211SG or Savox SC-1256TG digital servo (probably want to pick up a BEC while you're at it too if you go with the 1256 servo).

Servo Saver - In the same breath we recommend a new servo, the stock servo saver is in need of some help as well. I don't think the stock servo saver hasn't saved many servos and looks like a knock off of a Kimbrough.

Skip the issues and get a legit Kimbrough #123 servo saver instead.

Shocks - We get a lot of questions about this one and right now these are the most commonly suggested and used shock upgrades:

Bumpers - The stock bumpers are not only a bit small but we've also seen reports of them not holding up as well. Luckily we have companies like T-Bone Racing that offers front and rear bumpers for the both the Granite and Senton 4x4 Mega trucks!

Bearings - I've said it before and will say it again, stock bearings in nearly any RC stink. Get yourself a set of NICE bearings from Team Fast Eddy - he offers both a Granite and Senton bearing kit for the Mega 4x4's.


Aside from the above, there have been several people ask about 17mm hex adapters and a common reply is to buying a set of these 17mm adapters that so far seem to be working very well for members here.

Finally I would suggest anyone looking for more information, tips and other mods check out these useful threads below:

Please, if you have other suggested upgrades, mods or tips for the Arrma 4x4 Mega Granite or Senton trucks please share below!
My newish blue brushed granite 4x4 esc LV always cuts out at 3.9 per cell. I am not planning on upgrading this truck to brushless as it will go to my wife (she prefers a slower car), when I get it some sorta blx down the line. What would be a good ESC to put in to stop this issue?
Oh, when my current brushed motor does die I’d like to put in a titan 3975 (21t, 14v). Curious if a specific type of esc is needed for that motor.
I mean it works in the Traxxas Summit right
Let’s see....run a power wheels car....or try it in an RC....tough decision there!! Lol
🤔 What would it take to do that? Different type of Esc?
 
Top