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Thread: Project: "U4C3" (Ultra4/C3 Truck)...

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Old 10-13-2014, 10:28 AM   #1
I wanna be Dave
 
Join Date: Feb 2009
Location: Cowtown, USA
Posts: 2,780
Default Project: "U4C3" (U4RC/C3 Truck)...



I have been wanting to build a full tube chassis rig for a lot time but never had the guts....so here goes nothing!!!

  • Axial Wraith Axles
    • Vanquish Products XR10 Knuckles.
    • Vanquish Products XR10 C-Hubs.
    • Vanquish Products VVD Axial Wraith Version #1 4mm Stubs
    • Vanquish Products Lockers
    • Vanquish Products Rear Lockouts
  • Suspension
    • Vanquish Products 4-Link Mount (Front&Rear)
    • RC4WD The Ultimate Scale Shocks 110mm
    • Pro-Line PowerStroke Scaler Shocks (90mm-95mm)*For now, not 100% sure yet.
    • Rear Yeti trailing arms.
  • Drivetrain
    • MIP DriveShafts
    • Axial Trans with Alum case and all alum goodies.
    • 32p spur and pinon.
  • Electronics
    • Mamba Max Pro
    • Motor: TBD
    • Hitec 7950 Servo (Steering)
    • Winch: TBD
    • CCBEC
  • Chassis
    • Tube chassis
    • Wraith skid plate
  • Body
    • Aluminum sheeting with possible future skins
  • Wheels and Tires
    • Vanquish Products OMF 2.2 Scaler
    • 2.2 Pit Bull Rock Beasts.
    • Crawler Innovations Foams


Last edited by justinart24; 03-03-2015 at 09:23 AM.
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Old 10-13-2014, 10:28 AM   #2
I wanna be Dave
 
Join Date: Feb 2009
Location: Cowtown, USA
Posts: 2,780
Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

For the tube design I am starting off by drawing it out on a big sheet of paper so I can lay out the design in a 1:1 scale. I could even use this paper to ensure I have bends correct and etc.

Specs:
-Wheelbase: 14" (Stock Yeti is 14.2" and my old Ford F350 was 13.5" so I am used to driving longer rigs if I end up driving this in Class Three)
-Main Cab length: It will be 5" for the main cab from the front of the door to the rear to follow SORRCA specs)






Don't mind Amigo, he doesn't bite.

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Old 10-13-2014, 10:28 AM   #3
I wanna be Dave
 
Join Date: Feb 2009
Location: Cowtown, USA
Posts: 2,780
Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

I had the day off so I did some building....lots of building...lol.


I got a bunch done on the chassis, I am happy with the rear tube work about not sure about the front tube work. I thought I could get away with my simple front shock mounts for this weekend but will be make some fancy one in the morning so the front end compresses down like the rear.

I usually sand all the weld down for pictures but I am in a rush so you get unsanded braze joints in the pics for now...lol.







I will have the option to run a spare or not.


Believe it or not but I got the rear compression geometry right the first time....the axle housing almost contact the tube work. I have a set of Proline slash shocks I might try to put in the rear for more travel...I assume the Proline SCX10 shocks will not be enough for big jumps or etc.


I am running Axial hardened gears in the rear.


I had a Yeti receiver box and it happens to fit in the rear tube work so I put some Tabs to hold it in place.
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Old 10-13-2014, 10:29 AM   #4
I wanna be Dave
 
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Location: Cowtown, USA
Posts: 2,780
Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

I got more done with the front end and made some shot hoops. I might make some taller hoops, just not enough squat for my taste.





I got some tabs in for the front and top Maddog light bar. I ran out of tubing but I will be making a guard for the top light bar.




Uncompressed....


...and compressed....lol....30lbs. :P
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Old 10-13-2014, 11:46 AM   #5
Rock Crawler
 
Join Date: Aug 2012
Location: Koloa boy 808 2 DA 206
Posts: 612
Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

this thing was bad ass justin thank you for the u4 races event you guys put on a good show glad i was apart of it my wrexo will be alot more ready next time
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Old 10-13-2014, 07:20 PM   #6
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Join Date: Nov 2008
Location: Santa Fe, NM
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Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

Great looking rig can't wait to see what else you do with it.
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Old 10-14-2014, 12:06 PM   #7
I wanna be Dave
 
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Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

Quote:
Originally Posted by zion23 View Post
this thing was bad ass justin thank you for the u4 races event you guys put on a good show glad i was apart of it my wrexo will be alot more ready next time
Thanks Kevin! No worries on the event, glad you had fun.
http://www.rccrawler.com/forum/u4rc/...ictures**.html
Quote:
Originally Posted by dubAron View Post
Great looking rig can't wait to see what else you do with it.
Wow, thanks sir! I got a lot of scale plans for this, cool little things like a nice dash, fuel door and etc.
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Old 11-01-2014, 01:27 AM   #8
I wanna be Dave
 
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Location: Cowtown, USA
Posts: 2,780
Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

I got a bit more done this week,.....I did the light bar brace, interior front/roof/rear bracing and made up a servo winch location...plan is to have a blower covering the winch spool. I am not sure if I am going to run the Hilux drivers, I think when their arms are on they might bulge out a bit too much for my taste.
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Old 11-01-2014, 05:56 AM   #9
Rock Crawler
 
Join Date: Jun 2012
Location: jville
Posts: 580
Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

Awesome build so far man im subscribed keep it up
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Old 11-06-2014, 11:14 AM   #10
I wanna be Dave
 
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Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

Quote:
Originally Posted by gsrcivic View Post
Awesome build so far man im subscribed keep it up
Thanks a lot sir!
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Old 11-06-2014, 11:16 AM   #11
I wanna be Dave
 
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Location: Cowtown, USA
Posts: 2,780
Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

Here is a picture from last weekends WARCRC "second" U4RC race. I didn't get it running, there were still area where I needed to brace up tube work so it didn't get bent. It coming togethor though, I just have small thing to do, such as redo the rear shock mounts for the Slash 4x4 Proline shocks and bits of interior pieces, I will have more to post this week.
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Old 11-06-2014, 11:35 AM   #12
Rock Crawler
 
Join Date: Aug 2012
Location: Koloa boy 808 2 DA 206
Posts: 612
Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

bum i miss this one holiday season weekends are getting buisy for me between my wife going to the hawks game and stuff hahaha... hope to see this rig at the next races,,,
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Old 02-14-2015, 05:33 PM   #13
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Join Date: Sep 2014
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Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

This build is great. What type of tubing did you use and what type of welding—torch or TIG?
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Old 02-14-2015, 08:22 PM   #14
I wanna be Dave
 
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Location: Austin Texas
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Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

Looks killer man! I was just thinking that i hadnt seen you build anything in awhile.
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Old 02-14-2015, 08:54 PM   #15
Rock Crawler
 
Join Date: Mar 2014
Location: Yorkville
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Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

really nice rig,
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Old 02-14-2015, 09:17 PM   #16
KMK
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Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

Still working on this?

Next race 2 weeks!
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Old 02-15-2015, 12:49 PM   #17
Rock Crawler
 
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Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

Yes update justin ! Btw those wheels are frik in sweet
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Old 02-16-2015, 11:43 AM   #18
I wanna be Dave
 
Join Date: Dec 2006
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Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

Yet another sick build sir. I like your work and this one falls miles short of disappointment.
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Old 02-27-2015, 09:27 AM   #19
I wanna be Dave
 
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Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

Quote:
Originally Posted by Highmark View Post
Looks killer man! I was just thinking that i hadnt seen you build anything in awhile.
Thanks man! Yeah, I was building pretty heavy for a while there and took a break....hockey got in the way...lol.
Quote:
Originally Posted by gunder463 View Post
really nice rig,
Thanks!
Quote:
Originally Posted by KMK View Post
Still working on this?
Next race 2 weeks!
Yup, still going...lol.
Quote:
Originally Posted by zion23 View Post
Yes update justin ! Btw those wheels are frik in sweet
Thanks! I agree!
Quote:
Originally Posted by Bananaclip View Post
Yet another sick build sir. I like your work and this one falls miles short of disappointment.
Thanks Banana!!!
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Old 02-27-2015, 09:28 AM   #20
I wanna be Dave
 
Join Date: Feb 2009
Location: Cowtown, USA
Posts: 2,780
Default Re: Project: "U4C3" (Ultra4/C3 Truck)...

I got the brazing done...woohoo!! I wasn't sure how I was going to do the front fenders but adding some fab tabs and bars so I could mount panels in the fenders to keep mud out of the cab.

I also brazed in a Carter Fab "Fab Tab light bar”.
Carter Fab & Machine » Fab Tab “light bar”









I also added some grab bars to the pillars.
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