Stock oil weight of Typhon Grom shocks

[thesnowgod]

Got back into the hobby after 30+ years and taking up indoor offroad carpet racing.

The shocks seem very stiff especially the fronts. Looking to go thinner. Anyone here know the weight of the stock oil for a baseline?

Someone on FB said it's 2000 cst. Does that sound correct? No one else chimed in.

Thanks in advance.

 

[Chapinb]

Is 2,000 cst according to arrma. But that puts it into the ~150wt territory and that seems absurd.
To add confusion the grom mojave is listed at 1000cst (75wt) and the granite is 300cst (27wt).
Hope someone else chimes in about the actual wt, but Id expect it to be closer to 300cst/30wt in reality.

 

[hobo]

Got back into the hobby after 30+ years and taking up indoor offroad carpet racing.

The shocks seem very stiff especially the fronts. Looking to go thinner. Anyone here know the weight of the stock oil for a baseline?

Someone on FB said it's 2000 cst. Does that sound correct? No one else chimed in.

Thanks in advance.

if you got the blx typhon grom the shock weight is 2000 cst and check your diffs there was nothing in mine they should have 3000 cst in them

 

[Garcbomber]

I run 80-100wt front and rear in all my Grom off-road bashers but my wife likes it stiff for big jumps

 

[Chapinb]

my wife likes it stiff for big jumps

hehe



Sorry.

 

[thesnowgod]

I checked the diffs and there was a grease in them but not oil.

Was going to get 30 wt oil for shocks but would hate to clean em out and fill them with what's already in there. They are definitely super stiff. The front end barely moves from a 6" drop.

 

[thesnowgod]

I reached out to Arrma directly and they claimed these "should" have 45 wt oil in the shocks. Just a heads up there. Still seems like this weight is much heavier than that.

 

[Chapinb]

45 is at least a reasonable number, unlike 150.

 

[hobo]

I reached out to Arrma directly and they claimed these "should" have 45 wt oil in the shocks. Just a heads up there. Still seems like this weight is much heavier than that.

if you look on the exploded view of the typhon grom BLX look at the shocks and take the part number down then google it it says there's 2000 cst in them

 

[thesnowgod]

Im going by the email I got back from them via their Supprt page. These are definitely too stiff. I'll pick up some 30 weight and see how it goes.

In my particular section of NY we were hit with nearly 5 feet of snow. Most of my "spare" time has been wrenching on my snowblower and frozen pipes. Ugh.

 

[thesnowgod]

UPDATE: (in case someone plans to run indoor offroad carpet and not using as a backyard basher type of vehicle).

I stopped my the local track, grabbed some 30 wt shock oil. After draining and refilling with tje new fluid, I did see a significant difference.

First off, pouring the old oil out, I noticed it was quite thick. I'm not knowledgeable or experienced enough to guess the weight based on a visual pour, but it was slightly thinner than rubber glue.

I also noticed the stock shocks are already leaking. This has only seen about 2 total hours of carpet time. I'm guessing I'll need new seals and a full rebuild soon.

After adding fresh oil, properly filling and bleeding off all air bubbles, I reassembled and did a very non-scientific comparison test of compression and rebound. I took a stock fully assembled shock and squeezed it between my thumb and index finger a dozen times and compared it to the one I added the new 30 wt oil to. The newer oil definitely made it easier to compress and rebound was slightly more responsive too.

On the track, I noticed a bit more body lean into the turns than before. At this point, the only thing keeping this car from performing well is my lack of skill. Man, I'm rusty and do NOT turn clean consistent laps yet.

Next up is possibly adding a little bit of weight in back as there's two sections of doubles on the track and despite my best stab at throttle application, it nosedives terribly.

At this point I'm not racing against other Groms. They just don't have anyone running them yet so I'm out there with "whatever" they have to make a class sadly. But it's still fun.

Ill add, one of the racers let me take his Associated B7 for a few laps. I was shocked despite it obviously being much more powerful, it seemed so much easier to drive!

As I learn, and race more, I'll share more observations if it helps someone else out there who'd like to try.

 

[hobo]

Im going by the email I got back from them via their Supprt page. These are definitely too stiff. I'll pick up some 30 weight and see how it goes.

In my particular section of NY we were hit with nearly 5 feet of snow. Most of my "spare" time has been wrenching on my snowblower and frozen pipes. Ugh.

I put 2000 cst in the shocks yesterday and its same as stock