rockbull2

[rockweezal]

i just got a rockbull2 chassis and was wondering on performance and opinions on it

[BrandonW]

its a hell of a lot better then a stock clod chassis looks awesome too

[rockweezal]

hey thanks for replyin hope it turns out to be a hell of a truck

i have these parts for the truck already or on the way should be here by monday

tekin rebel 2 esc
jps aluminum bumbers (m servo mounts)
jps aluminum gearboxes
jps aluminum axle tubes and knckles
and extensions
aluminum gears and lockers
hitec hi torque servos
integy 65 turn lathe motors
integy pigyback shocks
jps tires
and traxxas reciever system(tq3)
16 tooth pinions

i hope its worth all the money

[bRIBEGuy]

Wow........................

That's quite the fancy (and pricey) build list. You'll definately have to post some pics!

You might find that a 16t pinion is a bit big for crawling. Most guys are running 8t-10t pinions.

[Bobtail74]

I have the bent arm version and keep breaking the black plastic rod ends where the lower arms mount to the chassis. These are just Traxxas rod ends but I have already broken three of them. I suspect the real problem is the length of the threaded rods. The threaded rods are so short that they seem to have a hard time supporting the plastic. I also suspect that my harsh crawling environment is putting extra stress on the rod ends with the bent lower arms. Other than the customer service at RC4WD, I like the ideas and the designs for some of their parts. I have no COMP experience but so far I like the general crawling abilities.

[rockweezal]

yeah i cant wait till its bult my brother put the 65 turn motors on his truck w 9 tooth pinions and it was a lil to slow so ill try the 16s if i dont like ill prob get some 10s i still need gears and shock mount then i can complete truck


i want to post pics for everyone when its done it should look pretty sweet u can see a pic of what it will be close to lookin like the one on rc4wd.com uder rock crawling parts then to to 1:8 ultra rockbull its pretty sweet and very clean looking

its gonna have a jeep rubicon body on it

[BrandonW]

sounds like a fun project. try the 16 pinions, if they are not to your liking you can always change them easily later. i find on my emaxx crawler i run the 45t motors instead of 55/65 and a little higher pinion count then most people run. the truck is still slow enough, but i can still get some descent wheel speed. remember, most of the fun is building and tweaking your rig.

[PaloAltoK5]

Originally Posted by Bobtail74

I have the bent arm version and keep breaking the black plastic rod ends where the lower arms mount to the chassis. These are just Traxxas rod ends but I have already broken three of them. I suspect the real problem is the length of the threaded rods. The threaded rods are so short that they seem to have a hard time supporting the plastic. I also suspect that my harsh crawling environment is putting extra stress on the rod ends with the bent lower arms. Other than the customer service at RC4WD, I like the ideas and the designs for some of their parts. I have no COMP experience but so far I like the general crawling abilities.

I had the same problem until I went to the M3 aluminum versions.

My Rig:

1 x Rockbull II Adanced Rock Crawling Chassis
2 x RC4WD 3 x Aluminum Gears for Clodbuster
4 x RC4WD Advanced Super Steering Knuckles (2 Pair)
1 x RC4WD Aluminum T-Maxx 14mm Adaptor & Widener for Clod & TXT-1
1 x RC4WD Full Metal Steering Kit & Rear Lockout for Clod
1 x RC4WD Narrow Beadlock Wheel for Tamiya Clod Juggernaut TXT-1
1 x Heavy Duty Piggy Shocks with Heat Sink (4)
- Color: Red
1 x Rubber Shield Clod Bearing Kit
2 x Super Clodbuster SD Skid Plate
2 x RC4WD 303 Steel Axle Kit for Clod
2 x 8 Tooth 32P Pinion Gear
1 x RC4WD Adjustable Motor Mounts
2 x Super Clodbuster CNC Aluminum Bumper Braces
1 x RC4WD Beadlock Wheels for 2.2 Tires (12mm Hex) Narrow
8 x RC4WD Aluminum M3 Rod End with Steel Ball (1)
1 x RC4WD 12mm to 23mm Proline 40 Series Wheel Adaptor (4)
4 x (1) Clod Bevel Joint (BH4)
4 x RC4WD Aluminum Mini M3 Rod End with Steel Ball (1)
1 x RC4WD Aluminum 12mm-14mm T-Maxx Wheel Adaptor for Clod TXT-1
- T-Maxx Wheel Adaptor Upgrade: No Upgrade
1 x Proline Moab XL (4 tires)
1 x Pro-Line 40 Series Cheyenne Bead-Loc Wheel Narrow (4 rims)
1 x Redrock (4tires)
2 x Integy 65T Lathe motors
1 x Futaba 4WD Attack Radio
1 x Novak Super Duty ESC
2 x Futaba S9153 for F/R Steering
1 x HiTech 5995TG "winch" servo
2 x Clod axles
1 x Pro-line Chevy C-10 body
1 x Pro-line Ford F-650 body

Enough?? Pics? No finished pics with the new tires rims yet....but...

[rockweezal]

still building mine i was wondering how the rockbull2 advanced preforms

[indy-fritz]

i too am building my first crawler from similar parts. i find the instructions sketchy at best. as a beginner i'd have liked more than a "guideline". i'm using the RC4WD axles with the extra parts, but the instructions are for the baic clod axles. also, i got the instuctions with the RB2, but it says to download the latest edition and when i did they look like instructions for the first rockbull and there are a few diferences. so far it's been just try it and change it and change it back. i use integy ms5 shocks and i think i'm going to have to use spacers on the outside of the frame between the lower links to get them out a little further as the shocks are pretty twisted on the bottom end of the lowers. i'll keep my eyes on this thread for your experiences. havn't got it together, but have 65t and 8 and 9 tooth pinions. i don't have metal gears, but do have the lockers. this thing does not turn very freely. is that normal?

[PaloAltoK5]

Originally Posted by rockweezal

still building mine i was wondering how the rockbull2 advanced preforms

It performs quite well. There is actually so many ways to "tweak" it to your own tastes that you are never really done!! lol

I just lowered my ride hieght and limited the suspension travel, it will do beyond 90 degrees if you let it....

As for the build, you really can't get it wrong. The chassis it self is only held together by 4 screws. So the rest is just working with the links to get the articulation you want and the weight bias to where you think your rig will climb best. Like most, I run a tad more weight forward for climbing, this can be a problem on steep decents, but I just keep the rear links maxed out so it it balances itself out....

[andrewmp6]

you could always add a tiny bit of weight to the rear wheels or run a 2nd battery

[PaloAltoK5]

Originally Posted by andrewmp6

you could always add a tiny bit of weight to the rear wheels or run a 2nd battery

There are too many ways to accoplish this, do what works for your rig and be happy!! lol

[cblake187]

I love mine.Works great,can't wait to see pics of yours.Bent links were'nt for me though.

[rockweezal]

ur guys rockbulls look pretty sweet cant wait to get mine done im still waiting on aluminum gears and shaock mounts

hopefullty they are here tomorrow

thanks for postin guys

[Rockthrasher]

The rockbull is a great rig. No problems with mine yet.

[PaloAltoK5]

Her's the latest on mine:

Truck Base : Clod + RockBull II Chassis
ESC: Novak Super Duty
Motor(s): Integy 65t x2
Servo(s): 2 x HS-945's for F/R steering and 1 x HS-5995TG for the winch
Trans: N/A
Axles: Clod w/RC4WD metal gears and trac lock
Tires: Imex RedRocks on RC4WD "Narrow" Beadlocks or Moab XL 40 Series Tires on Narrowed Proline Beadlocks
WB: ~16" hub to hub
Overall Width: ~14"
Diff clearance: 2.2-2.5" depending on tire choice
Center Chassis clearance: 5-5.5" depending on tires...but still experimenting with ride height.
Overall height: About 10.5"

[indy-fritz]

i notice you don't have spacers between the upper link mounts and the upper link and cblake does. looking at the instructions i've seen no spacers on the rockbull two instructions and spacers on the rockbull instructions. does it matter? someone mentioned they didn't like the bent links. which set of straight links are best if i buy them? rcwd has several sets in different sizes. thanks, fritz

[cblake187]

Here's a link to mine,the lenght they give is with rodend installed.Kinda confusing
http://rc4wd.com/shop/product_info.php?products_id=1181

I used pics off their site when building q's came up.They show the spacers.Other way might be just as good though.The bent links caused a lot of binding for me.Maybe its my setup but I noticed you dont see anyone running them in comps,and surely if they were a huge improvement they'd be everywhere.But that's just my opin.

[cblake187]

Originally Posted by indy-fritz

i too am building my first crawler from similar parts. i find the instructions sketchy at best. as a beginner i'd have liked more than a "guideline". i'm using the RC4WD axles with the extra parts, but the instructions are for the baic clod axles. also, i got the instuctions with the RB2, but it says to download the latest edition and when i did they look like instructions for the first rockbull and there are a few diferences. so far it's been just try it and change it and change it back. i use integy ms5 shocks and i think i'm going to have to use spacers on the outside of the frame between the lower links to get them out a little further as the shocks are pretty twisted on the bottom end of the lowers. i'll keep my eyes on this thread for your experiences. havn't got it together, but have 65t and 8 and 9 tooth pinions. i don't have metal gears, but do have the lockers. this thing does not turn very freely. is that normal?

You definately need spacer between the links and the frame. If your talking about the axles turning freely,they should with no motor attatched.