dna4engr
Rock Crawler
Replica-Campbell Racing's 2013 Stealth KOH IFS Rig
I had an extra Axial EXO kit and though about combining it with a Wraith, but that has been done a lot now by different members. They are really cool, but I want to do something original.
I was perusing youtube and found a video of the 2011 King of Hammers, the year Shannon Campbell won the race. I loved his rig being IFS and used for rock crawling but then being able to get out in the desert and fly.
Here is a pic of his 2012 KOH entry.
I am going to braze the complete tube frame using 3/16" brake line to match the 2013 version he's working on now. From the reference points I've made, I'm measuring in the 1/8 to 1/9 scale range.
Going to use a Wraith skid with the Exo front gear case and lower suspension arms, wraith rear axle. Some aluminum upgrades to the steering and some Axial universals. Vanquish locker in the front.
This is what I have so far. I rolled up the potential cost of this thing and I made some compromises. One of them being only ordering parts for when I need them. I have an old axial tranny that I am using for mockup with a Castle brushless motor for size.
I plan to make some upper a-arms, we'll see how that goes.
Drivetrain will likely be:
-Castle MMP with a Tekin Pro4 or Tenshock (haven't decided yet).
-Bomb proof tranny built like my Wringo.
-Axial over drive gears (it's gotta be fast enough to beat my other Exo :twisted
. -MIP drive shafts
-STRC/Vanquish goodies for the rear end.
Steering is up in the air at the minute. There are the challenges of mounting the exo steering. Contemplated a servo only steering, but we'll see what happens.
Batteries are undecided. I need to get the basic frame laid out and see what I can fit in there. I'd like it to be 2S lipos for normal use but be able to fit 3S for all out speed.
Body panels will either be custom styrene or Aluminum sheet. Not a lot to do for this style of rig.
Interior will likely be a Wraith interior cut to fit. Since his rig is a single seat, we'll see how the scale works out.
He uses the Walker Evans wheels with a green beadlock ring. Since no one makes a direct copy in metal with beadlock. I'm looking at these from RC4WD.
Predator Crawler 2.2 Beadlock Wheel
Lastly is the tires. Shannon uses Goodyear Kevlars. The RC4WD two-face tires are really the best clone for a 2.2. However, I can't find much information on if they will work good for off-road and some rock crawling. Contemplating using something else like the MT TTC, or PB Rock beast II for performance, but the two faces really look like the kevlars. No matter which tire it is, I'll be running some CI foams.
Two Face 2.2 Offroad Scale Tires
Stay tuned. I hope to get a good start over the next few weeks as I use up my PTO before the end of the year. Overall it will take a while as I will need the all important funds to finish her up.
I had an extra Axial EXO kit and though about combining it with a Wraith, but that has been done a lot now by different members. They are really cool, but I want to do something original.
I was perusing youtube and found a video of the 2011 King of Hammers, the year Shannon Campbell won the race. I loved his rig being IFS and used for rock crawling but then being able to get out in the desert and fly.
Here is a pic of his 2012 KOH entry.
I am going to braze the complete tube frame using 3/16" brake line to match the 2013 version he's working on now. From the reference points I've made, I'm measuring in the 1/8 to 1/9 scale range.
Going to use a Wraith skid with the Exo front gear case and lower suspension arms, wraith rear axle. Some aluminum upgrades to the steering and some Axial universals. Vanquish locker in the front.
This is what I have so far. I rolled up the potential cost of this thing and I made some compromises. One of them being only ordering parts for when I need them. I have an old axial tranny that I am using for mockup with a Castle brushless motor for size.
I plan to make some upper a-arms, we'll see how that goes.
Drivetrain will likely be:
-Castle MMP with a Tekin Pro4 or Tenshock (haven't decided yet).
-Bomb proof tranny built like my Wringo.
-Axial over drive gears (it's gotta be fast enough to beat my other Exo :twisted
. -MIP drive shafts-STRC/Vanquish goodies for the rear end.
Steering is up in the air at the minute. There are the challenges of mounting the exo steering. Contemplated a servo only steering, but we'll see what happens.
Batteries are undecided. I need to get the basic frame laid out and see what I can fit in there. I'd like it to be 2S lipos for normal use but be able to fit 3S for all out speed.
Body panels will either be custom styrene or Aluminum sheet. Not a lot to do for this style of rig.
Interior will likely be a Wraith interior cut to fit. Since his rig is a single seat, we'll see how the scale works out.
He uses the Walker Evans wheels with a green beadlock ring. Since no one makes a direct copy in metal with beadlock. I'm looking at these from RC4WD.
Predator Crawler 2.2 Beadlock Wheel
Lastly is the tires. Shannon uses Goodyear Kevlars. The RC4WD two-face tires are really the best clone for a 2.2. However, I can't find much information on if they will work good for off-road and some rock crawling. Contemplating using something else like the MT TTC, or PB Rock beast II for performance, but the two faces really look like the kevlars. No matter which tire it is, I'll be running some CI foams.
Two Face 2.2 Offroad Scale Tires
Stay tuned. I hope to get a good start over the next few weeks as I use up my PTO before the end of the year. Overall it will take a while as I will need the all important funds to finish her up.
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