Granite Granite upgrade to 4s!! Help!!

[Revilljm]

Hello everyone hope you are all well!
I want to turn my arrma granite 3s into 4s anyone know of any parts I could use in order to allow the entire Vehicle to handle 4s Power?
I need to upgrade the motor, speed controller, wheels and drive shafts!
can Anyone think of anything else I should upgrade. E.g. differentials
Has anyone got any ideas as to what parts I should get. Anyone know of any 4s capable drive shaft upgrades or motor and esc upgrades.

Any help is appreciated! Thank you!!

 

[Overpowerrc]

Motor esc
Max10Sct combo

 

[Revilljm]

Motor esc
Max10Sct combo

Thanks man your an absolute ledgend this helps a lot!!

 

[Overpowerrc]

Thanks man your an absolute ledgend this helps a lot!!

No problem I wish I knew more but I don’t have one of the small trucks

 

[Revilljm]

No problem I wish I knew more but I don’t have one of the small trucks

After a quick look the Kv is almost twice as much but you’ve set me off on a good idea because I will just get a lower kv motor kit! Also the stock pinion is 15t and minimum is 13t so I can’t hear it down.
I might just get a lower kv one and have a 15t-26t pinion!

 

[Overpowerrc]

After a quick look the Kv is almost twice as much but you’ve set me off on a good idea because I will just get a lower kv motor kit! Also the stock pinion is 15t and minimum is 13t so I can’t hear it down.
I might just get a lower kv one and have a 15t-26t pinion!

Low kv = higher gearing but cooler
High kv = low gearing super hot

 

[Kylerc]

A Lower kv motor should last longer too, the high rpms will make cheaper motors rattle apart.

 

[skt07]

I don’t think new driveshafts are necessary. And neither are wheels. I’ve used the stock Big Rock tires with 4s and it’s fine. Same with the stock driveshafts. You can certainly upgrade them but those stock parts should be fine with 4s.

In addition to a new ESC and motor you’ll definitely want to get a spur/slipper assembly from one of the 4s vehicles. It’s a straight swap with the stock 3s part that you currently have.

https://jennysrc.com/collections/ar...bly-diff-57t-ara102690?variant=20379160674358

So start with ESC, motor and spur/slipper. Try it out, see if anything breaks and go from there.

Check out my Big Rock build thread for upgrades I made on the way to 4s. Many of the changes weren’t absolutely necessary for 4s but did make the truck drive better overall.

 

[Revilljm]

I don’t think new driveshafts are necessary. And neither are wheels. I’ve used the stock Big Rock tires with 4s and it’s fine. Same with the stock driveshafts. You can certainly upgrade them but those stock parts should be fine with 4s.

In addition to a new ESC and motor you’ll definitely want to get a spur/slipper assembly from one of the 4s vehicles. It’s a straight swap with the stock 3s part that you currently have.

https://jennysrc.com/collections/ar...bly-diff-57t-ara102690?variant=20379160674358

So start with ESC, motor and spur/slipper. Try it out, see if anything breaks and go from there.

Check out my Big Rock build thread for upgrades I made on the way to 4s. Many of the changes weren’t absolutely necessary for 4s but did make the truck drive better overall.

wow man thanks a lot this infomation is really helpful!

 

[mateo skyrunner]

This is a very informative thread. Was thinking about The same. I’ve got a million projects I’m thinking about. Btw checkout the siren build threads, granite on typhon 6s frame.

 

[Revilljm]

This is a very informative thread. Was thinking about The same. I’ve got a million projects I’m thinking about. Btw checkout the siren build threads, granite on typhon 6s frame.

Thanks dude! I love your profile pic!

 

[zeu569]

Everyone may have different experiences with upgrading and I've learnt that someone may say you need this or that while others have upgraded just the ESC with no problems, but just to let you know of my experience and what I went through I thought I'd mention what i did and what parts i had to upgrade.

I have a Typhon 3s running a 20T pinion with 30mm motor fan - the running gear is exactly the same as the Granite BLX 3s. I know as i have both and have swapped parts just to get my Typhon running after the below happened.

In the first instance i upgraded just the ESC to a 4s capable one. It was an RTR ESC from Hobbywing WP-8BL100A-RTR.

This ran on 4s with stock everything else (except 20T pinion) with no problems for several packs. However seeing as i used the stock motor with stock bearings the bearings blew which in turn grinded the spur gear.

To get it back up and running again i bought the following parts:
1. Plaig bearings for both top and bottom of BLX motor (different sizes)
- 5x16x5mm for the top
- 5x13x5mm for the bottom
2. Bought metal spur gear AR310945
3. Bought extra slipper pad as the metal spur will require 1 extra pad. Pack comes with 4 pads AR310908
4. Bought a new 20T pinion gear as the old 20T had a bit of wear due to the bearings failure
5. Bought longer velcro to accommodate 2x 2s batteries stacked on top of each other.
6. Bought EC5 connectors and replaced the Deans plug that the ESC came with. Made it so it has 2 plugs to run in a series - also made a loop one for when i run only 1 3s battery.

I put everything back in and off it goes, no more problems - I can't tell you how long this will last as I've only ran it twice so far and i bashed it with no problems both on dirt and on-road. Temperatures are still within touching range. I can leave my finger on it without burning. NOTE that it is winter here but still not too cold yet. During the day its about 21 degrees celsius.

 

[Revilljm]

Everyone may have different experiences with upgrading and I've learnt that someone may say you need this or that while others have upgraded just the ESC with no problems, but just to let you know of my experience and what I went through I thought I'd mention what i did and what parts i had to upgrade.

I have a Typhon 3s running a 20T pinion with 30mm motor fan - the running gear is exactly the same as the Granite BLX 3s. I know as i have both and have swapped parts just to get my Typhon running after the below happened.

In the first instance i upgraded just the ESC to a 4s capable one. It was an RTR ESC from Hobbywing WP-8BL100A-RTR.

This ran on 4s with stock everything else (except 20T pinion) with no problems for several packs. However seeing as i used the stock motor with stock bearings the bearings blew which in turn grinded the spur gear.

To get it back up and running again i bought the following parts:
1. Plaig bearings for both top and bottom of BLX motor (different sizes)
- 5x16x5mm for the top
- 5x13x5mm for the bottom
2. Bought metal spur gear AR310945
3. Bought extra slipper pad as the metal spur will require 1 extra pad. Pack comes with 4 pads AR310908
4. Bought a new 20T pinion gear as the old 20T had a bit of wear due to the bearings failure
5. Bought longer velcro to accommodate 2x 2s batteries stacked on top of each other.
6. Bought EC5 connectors and replaced the Deans plug that the ESC came with. Made it so it has 2 plugs to run in a series - also made a loop one for when i run only 1 3s battery.

I put everything back in and off it goes, no more problems - I can't tell you how long this will last as I've only ran it twice so far and i bashed it with no problems both on dirt and on-road. Temperatures are still within touching range. I can leave my finger on it without burning. NOTE that it is winter here but still not too cold yet. During the day its about 21 degrees celsius.

Thanks dude that is a lot of useful information! I’m enjoying 3s but one of my future goals is to upgrade!!

 

[akquick]

Buy granite blx, 4s Mohave center diff, 20pinion, hot racing wheel hubs, 17mm wheel adapter, 17mm extension, 17mm wheels of ur choice, 130a firma esc, 1900kv spectrum, traxxas roof gaurd, wing mount, wing of your choice, wheelie bar, widen kit, at least dx5c transmitter, sr6001 reciever, kraton 6s front shock for granite rear shock, mohave front shock for granite front shock, double fan heat sink, or go crazy add a liquid cool, easily be over 70mph im not sure where but its insanely quick amazing control, extremely durable, drove a xmaxx 6s wasnt even comparable, the 3s granite is definitely something special, cheers! Wheels up! I only listed this stuff cause its a cheat code for the truck for beginners getting started out

 

[Neelis]

Everyone may have different experiences with upgrading and I've learnt that someone may say you need this or that while others have upgraded just the ESC with no problems, but just to let you know of my experience and what I went through I thought I'd mention what i did and what parts i had to upgrade.

I have a Typhon 3s running a 20T pinion with 30mm motor fan - the running gear is exactly the same as the Granite BLX 3s. I know as i have both and have swapped parts just to get my Typhon running after the below happened.

In the first instance i upgraded just the ESC to a 4s capable one. It was an RTR ESC from Hobbywing WP-8BL100A-RTR.

This ran on 4s with stock everything else (except 20T pinion) with no problems for several packs. However seeing as i used the stock motor with stock bearings the bearings blew which in turn grinded the spur gear.

To get it back up and running again i bought the following parts:
1. Plaig bearings for both top and bottom of BLX motor (different sizes)
- 5x16x5mm for the top
- 5x13x5mm for the bottom
2. Bought metal spur gear AR310945
3. Bought extra slipper pad as the metal spur will require 1 extra pad. Pack comes with 4 pads AR310908
4. Bought a new 20T pinion gear as the old 20T had a bit of wear due to the bearings failure
5. Bought longer velcro to accommodate 2x 2s batteries stacked on top of each other.
6. Bought EC5 connectors and replaced the Deans plug that the ESC came with. Made it so it has 2 plugs to run in a series - also made a loop one for when i run only 1 3s battery.

I put everything back in and off it goes, no more problems - I can't tell you how long this will last as I've only ran it twice so far and i bashed it with no problems both on dirt and on-road. Temperatures are still within touching range. I can leave my finger on it without burning. NOTE that it is winter here but still not too cold yet. During the day its about 21 degrees celsius.

A 3200kv motor with a 20t pinion on 4s is not going to last I am afraid, or you are very gentle with the throttle. Good it works for you, but I think it is not common your setup lasts.

I got overheated motors, overheated esc's, broken drive shafts, diff gears eaten. Problems happened in the grass or on sand for me.

Running now 2600kv with a 17t pinion, steel spur, steel diff gears and Mojave rear CVDs and that seems to last. My built thread has most of the info.

 

[Motodeficient]

In one of my granites I am running a Hobbywing Max10 ESC, Hobyywing 2400KV 3665SD motor w/ 40mm fan, kraton 4S diffs, hot racing diff yokes, steel input gears, steel spur gear, 17T pinion gear, Arrma HD CVD's, 6" tires (stock are around 5"). So far this thing has been working really well, no breakdowns. It is a savage beast on 4S, just wheelies with minimal throttle at any speed. According to my calculations, top speed on a 17T pinion should be around 66 MPH. I couldn't get it up to top speed however due to not being able to apply full throttle at any speed without wheelie, or running out of range of the stock SLT3 radio and SR315 receiver. I have now switched all of my Arrma vehicles over to the Flysky FS-GT5 transmitter with BS-6 receivers. Going to get a GPS and see if I can hit the 66MPH and move up on pinion gear size from there.

 

[Neelis]

In one of my granites I am running a Hobbywing Max10 ESC, Hobyywing 2400KV 3665SD motor w/ 40mm fan, kraton 4S diffs, hot racing diff yokes, steel input gears, steel spur gear, 17T pinion gear, Arrma HD CVD's, 6" tires (stock are around 5"). So far this thing has been working really well, no breakdowns. It is a savage beast on 4S, just wheelies with minimal throttle at any speed. According to my calculations, top speed on a 17T pinion should be around 66 MPH. I couldn't get it up to top speed however due to not being able to apply full throttle at any speed without wheelie, or running out of range of the stock SLT3 radio and SR315 receiver. I have now switched all of my Arrma vehicles over to the Flysky FS-GT5 transmitter with BS-6 receivers. Going to get a GPS and see if I can hit the 66MPH and move up on pinion gear size from there.

We have a very similar setup. It is an absolute beast on 4s, I agree, wheelies on demand. I also have the GT5 with BS6 transmitter. Would also like to check the top speed, but you need space, it's fast.

In one of my granites I am running a Hobbywing Max10 ESC, Hobyywing 2400KV 3665SD motor w/ 40mm fan, kraton 4S diffs, hot racing diff yokes, steel input gears, steel spur gear, 17T pinion gear, Arrma HD CVD's, 6" tires (stock are around 5"). So far this thing has been working really well, no breakdowns. It is a savage beast on 4S, just wheelies with minimal throttle at any speed. According to my calculations, top speed on a 17T pinion should be around 66 MPH. I couldn't get it up to top speed however due to not being able to apply full throttle at any speed without wheelie, or running out of range of the stock SLT3 radio and SR315 receiver. I have now switched all of my Arrma vehicles over to the Flysky FS-GT5 transmitter with BS-6 receivers. Going to get a GPS and see if I can hit the 66MPH and move up on pinion gear size from there.

How do you get to 66mph with your calculations? I get to 81kmh/51mph.

Are Granite wheels that much bigger?

I have wheels for a Traxxas Maxx (134mm diameter) and with those I would get to 59mph.

 

[Motodeficient]

We have a very similar setup. It is an absolute beast on 4s, I agree, wheelies on demand. I also have the GT5 with BS6 transmitter. Would also like to check the top speed, but you need space, it's fast.


How do you get to 66mph with your calculations? I get to 81kmh/51mph.

View attachment 366248


Are Granite wheels that much bigger?

I have wheels for a Traxxas Maxx (134mm diameter) and with those I would get to 59mph.

Sorry, I didn't notice your edit to your post. I'm running 6" (153mm) tires.