Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

I’ve had my eyes on a Game Changer 4.2 from the crawl space for some time now, after seeing and working on a friend’s 4.2, so I finally bit the bullet and grabbed a stage 2 kit.

I have most of the stuff for the axles on hand so I ordered up the rest of the parts and this is what I’ll be starting with.

- Crawl Space GC4.2 T6 Stage 2 kit, crawl space sliders, and crawl space stinger bumper.
- Hardcore RC 12.3” wb links
- SSD Pro 44 front and rear axles with SSD/Axial internals, 30/8 in both axles
- Samix aluminum v2 steering knuckles with samix brass knuckle weights (hefty! these seem nice and I couldn’t find SSD in stock anywhere, I’m excited to try these)
- Incision Drive Shafts
- Element RC Shocks (bronze)
- Mamba Micro X Crawler Edition
- Holmes Hobbies v2 Puller Pro Stubby - 2200kv
- Proline Gladiator Body (wanted something skinny)

For now, the wheels/tires and servo will be borrowed from another truck, as mentioned elsewhere I’m patiently waiting for more HH V3s to come in stock.

Since I’m waiting on the links, and it seems like outdoor activities around here are being shut down by the authorities, this one may take a couple weeks to come together but I’ll post progress as I work through it.

So far it’s just a box of parts, but a whole lot of fun in that box.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Looking forward to checking this out Topher as I've been considering working up a no holds barred after market chassis rig myself. My intent would be to keep it bare bones. No interior, no scale crap, just a lean, mean rock gripp'n machine with a cool lid.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Looking forward to your build Topher! Your going to like the GC platform. I love my two and waiting for the next round of C1 GC4.2 chassis to be back in stock. Make sure you check out the videos, very helpful for sure.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Nice! I've love to build one of these comp rigs some day.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Nice! I've been looking at some of these comp chassis. I don't intend to comp, but I do want to experience what they're capable of. There seem to be so several different ones out there though, so I'm never really sure which to go with.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Looking forward to seeing another cool build from Topher Builds!:)

A box full of tiny truck parts is always fun!

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Thanks for the interest fellas! I appreciate it.

Work was a little slow today so I started getting the front axle together, only to realize I’m one bearing short. I mocked it all up anyway to get a feel for the weight. With these samix v2 knuckles and weights this is hefty axle. Thinking I’ll have to run one of the SSD steel rims for clearance purposes.

The rear axle will be a ssd pro 44 also but I haven’t thrown that one together yet, so here’s a pic of just the front. Waiting on the links from hardcore rc and now a spare bearing kit and then I should have everything I need to get it going.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Nice - off to a great start!

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Looking good! It's a great platform, excited to see this one come together.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Heads up - bolt on knuckle weights arent SORRCA legal.

Hurry up and get it built!

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

It has really impressed me. I think you may have been surprised with it low slung and nimble but the low weight axles should be nice too

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Thanks guys!

Dang rules. I’ll swap knuckles with the trail king then. Thanks for the heads up JJ. "thumbsup"

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Any updates? "thumbsup"

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Little bit of an update to share. I swapped the knuckles on these axles with the ssd knuckles I had on the VS410, in order to comply with the sorcca rules about bolt on knuckle weights.

The links and spacers from hardcore rc showed up so now I have everything to finish this build up. Got started with the t case/motor mount. "thumbsup"

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

I don't know how the fit is with the aluminum parts, but the carbon/G10 parts are tight enough you can press the M3 nut into the T slot and it will stay making assembly easier.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

I used the tape trick from the YouTube videos. Everything was going together smoothly until I stripped one of the 40mm screws going into the skid plate. I could feel another one starting to round out so I stopped there.

Going to have to come back to it and pull them out but I ordered some hardened protek screws that I need to wait on in the mean time. Will try and grease the threads up some the next time.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Did the skid strip or the head of the screw strip?

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

It was the head of the screw. Got it out without much effort and have some replacements on the way.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

I’m interested to see more of this build. I built my game changer chassis a while ago and then gave up. But now I ordered some crawlspace sliders for it, put capra axles under it with CMS and now have motivation to finish it. I was debating on putting 10.3 axles but would require flipping the transmission and figuring out how to do the transfer case since you cant flip it because the angle.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

There are mirrored cases available. Just have to ask Ikaika for them at The Crawl Space.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

No sh*t?! Hmmm, now got me thinking. Thank you for the information "thumbsup"

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Quick update and a few pics. These axles have now been repurposed and are being used on the GSpeed v3 build. Instead, I’m going to break down the trail king and put those axles, shocks, and electronics on this rig.

I did get new 40mm screws so I can get back to building on this one once I tear down the trail king. In the meantime here are a few pics to share.

First pic shows the panhard mount. With so many mounting locations getting proper axle swing here shouldn’t be a problem. The aluminum feels nice and sturdy as well.

Also added a pic of the goods, the compact and nicely overdriven t case and front motor mount are simple but well designed. Nice angles for the top shaft and plenty of room for the motor.


That sounds like a cool build! Hope you pick it back up and share it in action.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Its looking good, I’m sure the aluminum is stronger than the G10 that i have. I guess I should get some pictures and start a thread on mine, i got my sliders today, and ordered the trans and transfer case flip kit housings. I think it will be better weight balanced side to side with the motor opposite of the servo since I’m not going to run a winch. And also the option to run the 10.3 axles easily. You can buy the AR45 housings and shafts and just swap all the capra parts into them. The universals are the most expensive part. I’m going to keep plastic axles to save weight for now, actually trying to keep a rig light is hard, all my other rigs have metal axles and end up 8 pounds without trying.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Oh...wait...ok! Now I see what your doing! I forgot about this rig your building also!

Man, two bad a$$ rigs at the same time! You really do mean business!8)

I'll be following both of them!"thumbsup"

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Looking good man! Definitely inspired me to move forward with my comp chassis. Can't wait to check out your running vids.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Back to work on this one. I grabbed some traxxas screws (TRA2592) and was back underway. Used a power driver this time and greased the threads and had no issues.

Got the links built up and almost ready to put some axles under it.

Been a lot of building around here! But when this one is finished, and a refresh on the vs410 is finished (new body, diff wb), I’ll be done building for a while and back to wheeling.

Thanks Walsh! I’m excited to run it. Glad to see you’re working on your comp chassis too "thumbsup"

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

I had this exact issue when I was building one for someone. Replaced the screws and didn't have any problems. I think the included M3x40 screws are low quality.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Axles and suspension are mounted up but the build is unfortunately stalled as the servo I ordered was dead on arrival. Having a heck of a time with the eBay seller too so I’m not sure how quickly I’ll get a replacement. May take the servo out of the vs410 in the meantime as that one is waiting on some body work.

Anyway, here are pics with axles and suspension. The trail king axles worked well enough, I had to space the upper link over to the outside of the mounting points on the pumpkin. There’s clearance until just before full compression where the driveshaft starts to hit the motor mount. It may not be a problem in the wild.

I could shave the motor mount a bit and clear it up, or I may get a center pumpkin axle for the front. Another option is these tubes and flip the pumpkin to the other side. Either way I’ll have to get new chubs and shock/link mounts so I’m on the fence about which way to go.

https://www.amainhobbies.com/ssd-rc-...8/p1155901?r=0

I’m starting to not be a fan of much stainless steel hardware in general, I think the hardware they include is from KNK so I’d expect it to not be awful. But stainless being soft in general maybe isn’t the best idea for a screw with so much thread.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

I'd flip the pumpkin.

I'm not sure where the hardware came from, but I had other stainless M3x40 screws that I put in and had no problems. But I would agree black oxide, especially in a skid application is a better option.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

In an effort to not have to buy more parts, I swapped axle tubes and whatnot with my Scx10ii and now have an offset front on the 10.2 JK and the standard center pumpkin on here. Full clearance and no issues anywhere now.

Finally got the refund from the eBay seller but I still don’t have a servo. JRH had mentioned v3s should be coming back in stock within a couple weeks so trying to hold tight for one of those.

As far as the body goes, I’m not sure. I have a 4runner on hand that I’ll probably start with but that may change as always. I think I’ll get that going this week and get some wheels and tires on it.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Looking real good mate!..

I love these chassis types.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Made some more progress on this one and it’s almost ready to run. I painted up a 4runner body for this one and went with a BMow inspired paint scheme. Pretty happy with the outcome. Might slap a couple HH decals on once I get the electronics done.

Last night I mounted the mamba x and the receiver, also switched from the castle 2280 slate to a puller pro stubby 2700kv. All that’s left to do now is get the battery mounting figured out and then steal a servo from something.

Thanks Stimpy! "thumbsup"

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Man, this build looks awesome!"thumbsup"

Nice choice on the colors! I approve!;-) Body turned out great! Just be careful not to scratch it! Yeah, right! Can't wait to see this beauty out on the rocks!

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Looks great! Body fits like a glove "thumbsup"

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Looking good! My batteries fit on the skid next to the t-case nicely, and I really like that location. I designed and printed a mounting plate that bolts to the skid with the existing holes, but lexan and some spacers would work just as well. I have the plate elevated slightly off the skid so that the suspension links don't hit the battery and to allow a velcro strap to be used.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Suspect it's the hardware they supply as I did the same on one of mine. Look forward to seeing this beast of yours completed.

My rolling chassis has been sitting with some provisional links from Samix whilst I await the arrival of my hardcore links. Seeing your build has me all excited again about getting mine done. Unfortunately mine loses some of the low cg benefits as I am putting it on portals as those are the only axles I have spare sitting around and can't bring myself to spend on new axles currently.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Thanks y’all! I appreciate it.

I got the battery situated by using one of my favorite tools and shoe-goo’d a trimmed up element enduro battery tray to the slider. Ran it under its own power for the first time and started bench testing. Seems ready for the rocks, I won’t be able to wheel this weekend so I’m shooting for a maiden voyage the following week.

While bored yesterday I also played around with some automotive pin striping. The lines/stripes clash so I’m taking them off but figured I’d say a pic in case any of you are curious to what it looks like for your own purposes.

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Thanks! That’s cool it got you excited for your own project. Bummer about the hardware though.

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Very cool build ...did you get a new servo already?? If not give this a glance https://www.agf-rc.com/sa75cvsw-p2729240.html "thumbsup"

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Thanks! That servo doesn’t look too bad, wish it was in the states though. I’m moving next month and don’t want to risk waiting for anything from China, and am also still trying to sit tight for the HHV3.

For now I stole the protek servo out of my scx10.3

Re: Topher builds a class 2 comp rig - Crawl Space Game Changer 4.2
 

Looks damn good bro! How do you like this compared to the GSPEED? What side plates did you use?

Lou