Best Arrma Mojave 4s Shock Oil Weight?

I noticed the shocks on the Mojave 4s weren't really doing a good job of dampening. So I decided to service them. Come along and see why you need to check your shocks and what oil to use to service them.
Let me know if you have any questions, and feel free to check out my other repair and tips videos on the Mojave 4s.
Stay well.
Bris

[@alantaylor353]

That looks so much better now.!! 👍 👍 👍

[@bigbristv]

Thanks 👍

[@scaleworksRC]

Omg, I felt that tree smack 😬 both amazing trucks, though. Nice job on the tune! 👍 *here's what Cst means: Centistoke This number indicates the ease with which the oil can be moved. The other unit is the Centistoke (cSt) which is used to report the kinematic viscosity of motor oil at high temperatures. The number reflects the time required for a fixed amount of fluid to flow through a certain sized orifice on the testing device.

[@bigbristv]

Thanks ✌️

[@HNguyen714]

Much better dude. I just put 60 weight in the rear and 50 in front and it’s perfection for my riding in California

[@bigbristv]

Let me know if it changes over time. I've been bashing ever since and I think I can see a very slight change so far from whence I first did it.

[@MauzyrockRC]

Haa! Your laugh is infectious dude! I was laughing along with ya! The Mojave looked way more plush and ready after the tweaks! Cheers

[@bigbristv]

😆👍

[@rcplaytime]

mojave is tough 💪💪 love it 👍 hope baja rey is running again soon, i agree that vitavon is way too expensive, nice shock upgrades dude 👍👍👍😀😀

[@bigbristv]

Thanks man, I appreciate it 🙏

[@red17able]

diggum SMACK hits hard bro

[@bigbristv]

Yup 😅

[@IdiocracySpace]

For what it’s worth I added two spares vertically mounted to the back just for looks. It sits lower of course all stock but it really smoothed out all the rebound and has that magic rear float over bumps like the UDR. Maybe just add weight unless it’s against the rules 😅? It’s all a delicate balance but I also like the heavier realistic feel. 🙏🏼👊🏼🤙🏼

[@bigbristv]

I was so going to do that since I had spare tires but didn't want to cut into the body.

[@IdiocracySpace]

@@bigbristv oh same here at first but I just removed the rear rectangle area behind the body mount and between the fire extinguishers. The spares sit a little high on the rear bumper but it works great and and the body is still rigid.

[@haywirerc]

8:04 efficient worker😂

[@bigbristv]

😂

[@FPV-TV419]

Also depends what pistons you have inside the shocks. I've had 2x mojave 4s. One had diff pistons in both front shocks. And the pistons in the other were the same. However.... even though arrma say stock oil weight is around 550cst .. I highly doubt this... as I put 400 cst all round and it slowed the damping down to a near perfect amount. The oil that came in the shocks feels more like 200cst

[@bigbristv]

I just have trouble with the cst conversion since I use weight and it's brand specific as to the calcs, etc. I found the 80wt was good, maybe a bit bouncy up front 🤔

[@FPV-TV419]

@bigbristv yes you might be right with the conversions being brand specific. I just bought a variety of oils and went with what gave a good balance of damping, as I do want it good over small bumps, so it does need to rebound at a decent speed too

[@haywirerc]

The fix: buy a Losi😂 nice video👍

[@bigbristv]

Thanks! 😅

[@kanenstuff]

We had the best BMX track at West Lakes South Australia, I miss that a lot really don't find one's like that in Malaysia.

[@bigbristv]

This pump track is pretty cool, better than nothing I guess 🤷 😅

[@kanenstuff]

@bigbristv yep that's what I have now nothing lots of natural areas. The rc tracks and bmx tracks are private, car parks are out security kick you out and shops open 10am to 10pm 365, the Philippines was more rc friendly.

[@bigbristv]

@@kanenstuff that's tough bro

[@kanenstuff]

@bigbristv that's OK I often travel around Asia Pacific region for work and sometimes to Europe, Canada and America so not so much time to enjoy my hobby.

[@StreetBikeIke]

In my opinion after driving it I think the 4s is supposed to bottom out jumping. By putting such heavy oil in you stop it from bottoming out but you slow the rebound and dampening a lot especially when driving over choppy surfaces. You will probably find it a lot more bouncy on smaller bumps

[@bigbristv]

Yeah, I was thinking about this which is why I bought different weight oils. I guess I'll have to tune for the conditions. They tried to strike a happy balance out of the box, same with the Baja Rey 2.0. Just tune to your application I guess 🙂

[@Shreddylife]

I don't think any company makes a 20,000cst shock oil because 100wt oil equals 1325cst. I am running stiffer springs than stock and 100wt oil and it has waaaay more dampening than stock the setup. If I was to guess I bet they are running more like 40wt / 516cst stock. It sure handles a lot better with the stiffer spring and thicker oil setup that's for sure!

[@bigbristv]

Thanks for this! I think they were going for the floaty result when driving thru the whoops, but for real-world bashing, we needed something more robust! Glad you got yours sorted!

[@Shreddylife]

@@bigbristv 100% agree! I have been having so much fun at the local track with this truck. It handles so well!

[@troyavery6889]

What do you think of a shock with more adjustability,like almost all other shocks,having a threaded barrel and adjusting it with a thumb wheel like ring?

[@troyavery6889]

Kinda looking for opinions on this,pros or cons . See what y’all think 🤔

[@bigbristv]

That would be ideal, some people have used different shocks altogether, I think from a Kraton 8s.

[@gillian9178]

I thought Arrma recommended 500cst for the 4s Mojave, that is 40wt.

[@bigbristv]

You know, I had a dream I should look at the manuals that came with the thing, could be 40wt but that's not cutting it for big air 🤔

[@Casitascrawlers]

That doesn’t look like a shock issue if your gunna send it shits gunna break. 🙌

[@bigbristv]

I appreciate your comment and also if you would edit it for language 😉

[@jairorodriguez9943]

70w is about 900 cst. If that help. That what my bottle says.

[@bigbristv]

Thanks. So what is 20,000 cst?

[@jairorodriguez9943]

@bigbristv CPS (Centipoise scale) is pretty much the same numbering as the Centistokes measurement (cSt). 1 CPS = 1 cSt, 500 CPS = 500 cSt etc.. 100wt is NOT the same as 100 cSt! 100wt is about 1450 cSt! Put 100wt oil in your shocks and it will land like a brick.

[@jairorodriguez9943]

@bigbristv CPS (Centipoise scale) is pretty much the same numbering as the Centistokes measurement (cSt). 1 CPS = 1 cSt, 500 CPS = 500 cSt etc.. 100wt is NOT the same as 100 cSt! 100wt is about 1450 cSt! Put 100wt oil in your shocks and it will land like a brick. I think that might be too much for the rc car and trucks. I personally haven't see more than 100 wt but I could be wrong

[@bigbristv]

I appreciate the chart you sent bro, thanks!

[@10krms54]

Which springs did u use i need to try it on mines.

[@bigbristv]

The rear spring from a Talion, part number is listed in one of my Mojave upgrade videos. I'll check.