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Thread: GCv4.2 Class 3 build

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Old 03-18-2021, 01:19 PM   #1
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Default GCv4.2 Class 3 build

Another build thread I probably won't finish...

Specs!

The Crawl Space CF Game Changer v4.2 with CF rails and 3d printed trans and t case
High Altitude Performance Enigma axles. XR width with an offset front and centered rear. New 3/8" tube link/shock mounts for narrow lowers and tire/shock clearance at full lock. Currently sitting around 58* of steering front and rear
3.5" big bores with the ball end cap and Mini T springs
Savox 2290 steering servos
Castle Mamba Micro X esc and an old Brood handwound that probably came from Krawlfreak
High Altitude 2.2 7075 wheels and #Szczerbabuilt 5.5" krawlers. The wheels will change to flat faced carbon versions to be SORRCA legal

2021-03-08 22.16.46 by Casey Childs, on Flickr

2021-03-08 22.16.48 by Casey Childs, on Flickr

Start of the body mods:
2021-03-08 23.59.08 by Casey Childs, on Flickr

Rough chassis layout:

2021-03-08 23.59.21 by Casey Childs, on Flickr

2021-03-08 23.59.31 by Casey Childs, on Flickr

2021-03-08 23.59.56 by Casey Childs, on Flickr

2021-03-09 00.00.05 by Casey Childs, on Flickr


Forklift steering engage!

2021-03-09 00.00.48 by Casey Childs, on Flickr

2021-03-09 16.13.49 by Casey Childs, on Flickr

2021-03-12 18.24.54 by Casey Childs, on Flickr


Uh oh.

2021-03-12 20.57.11 by Casey Childs, on Flickr

2021-03-12 21.48.17 by Casey Childs, on Flickr

2021-03-12 22.03.44 by Casey Childs, on Flickr

2021-03-13 23.58.42 by Casey Childs, on Flickr

2021-03-13 23.58.48 by Casey Childs, on Flickr

2021-03-15 12.54.26 by Casey Childs, on Flickr


Extended rear bumper with winch hooks to yank the ass end around with the winch if needed.

2021-03-15 14.19.28 by Casey Childs, on Flickr

2021-03-15 14.19.33 by Casey Childs, on Flickr


When you are too cheap to go buy a winch servo...

2021-03-15 14.59.35 by Casey Childs, on Flickr

2021-03-15 15.28.34 by Casey Childs, on Flickr

2021-03-15 16.05.46 by Casey Childs, on Flickr

2021-03-15 21.04.15 by Casey Childs, on Flickr


7075 sliders cut on the router and the rear mounted winch plate

2021-03-15 23.48.22 by Casey Childs, on Flickr

2021-03-15 23.48.25 by Casey Childs, on Flickr

2021-03-15 23.48.29 by Casey Childs, on Flickr

It looks like I need to cut the wheel well farther forward or cut new sliders to get within 1/2" of the wheel well for metal slider points.

2021-03-15 23.48.55 by Casey Childs, on Flickr


Next on the list is a full interior, paint and finally testing. I should have it done in the next week or so, plenty of time to get used to it before the next scale comp in April.
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Old 03-19-2021, 05:19 AM   #2
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Default Re: GCv4.2 Class 3 build

Quote:
Originally Posted by Almighty Malach View Post
Another build thread I probably won't finish...
Anyway, nice from you to share your build
Great start ,I will follow as far it goes (or as long it takes)

Serious: excellent craftmanship so far!
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Old 03-19-2021, 06:17 AM   #3
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Default Re: GCv4.2 Class 3 build

Cool build, I don't really understand all the classes and stuff yet. How can I learn more about this 3d printed transmission and transfer case?
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Old 03-19-2021, 06:34 AM   #4
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Default Re: GCv4.2 Class 3 build

Sweet looking build! A lot of cool stuff going on here!

Following to see more!
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Old 03-19-2021, 07:05 AM   #5
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Default Re: GCv4.2 Class 3 build

Definitely following along on this one. I really like the XR width axles. I have a soft spot for 2.2. Very cool build!

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Old 03-19-2021, 07:32 AM   #6
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Default Re: GCv4.2 Class 3 build

Quote:
Originally Posted by SurlyBurly View Post
Cool build, I don't really understand all the classes and stuff yet. How can I learn more about this 3d printed transmission and transfer case?
https://thecrawlspaceonline.ecwid.co...e-2-p140648994

The trans case and t case are designed for the Game Changer chassis using SCX-10.2 trans gears.
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Old 03-19-2021, 07:40 AM   #7
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Default Re: GCv4.2 Class 3 build

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Originally Posted by Almighty Malach View Post
https://thecrawlspaceonline.ecwid.co...e-2-p140648994

The trans case and t case are designed for the Game Changer chassis using SCX-10.2 trans gears.
Oh so it's just the housing, thats more in line with what I've been seeing. How does the 3dp housing change your setup? Is it an orientation thing or a weight thing or something else?
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Old 03-19-2021, 07:56 AM   #8
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Default Re: GCv4.2 Class 3 build

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Originally Posted by SurlyBurly View Post
Oh so it's just the housing, thats more in line with what I've been seeing. How does the 3dp housing change your setup? Is it an orientation thing or a weight thing or something else?
All of the above. Moves the motor forward and down from a stock 3 gear trans and allows for a full interior as well. Lower Center of Gravity, more forward weight and the motor on the drivers side helps counter torque twist.
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Old 03-29-2021, 10:15 AM   #9
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Default Re: GCv4.2 Class 3 build

Got enough done it was time to get out and test. This is with no additional weight aside from the brass brake drums up front and the brass tubes in the front axle. I think I need to go up in spring rates, it feels a little sloppy on off camber climbs. Otherwise it feels really good for a new build and it should only get better as the tires break in and I get the shocks dialed in.


2021-03-28 21.07.59 by Casey Childs, on Flickr

2021-03-28 21.08.46 by Casey Childs, on Flickr

2021-03-28 21.10.54 by Casey Childs, on Flickr

2021-03-28 21.17.59 by Casey Childs, on Flickr

2021-03-28 21.19.51 by Casey Childs, on Flickr

2021-03-28 21.21.36 by Casey Childs, on Flickr
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Old 03-30-2021, 09:51 AM   #10
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Default Re: GCv4.2 Class 3 build

Awesome build! I like those axles...and love that steering angle.
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