Skeeno’s Altra Ultra Bomber Build

By Skeeno on May 03, 2017

Axialfest 2016 marked the debut of the Altra Ultra 5K Enduro race.  This new race combined the traditional closed course racing with the athleticism of a traditional cross country run.  Here is a little background on how the whole thing started: http://www.axialracing.com/blog_posts/1073920724. After watching the participants running five kilometers piloting and chasing their vehicles, I knew I wanted to add this to my to-do list at Axialfest 2017. If you haven’t seen the Axialfest 2016 coverage of the Altra 5K Enduro you can check it out here: Skeeno’s Axialfest 2016 Report Part 2IMG_20170112_121703First up was deciding a rig to pilot.  This was fairly simple as the Axial RR10 Bomber is the rig of choice for the Altra Ultra 5K Enduro.  While the RTR version is more than capable, I decided I wanted to build my own, so I ordered up the kit version. The kit version is awesome because it comes with a ton of hop ups already in the kit such as aluminum links, CVD axles, and heavy duty differential gears. IMG_20170330_131204 I didn’t stop at just the kit hop-ups, I kicked it up a few notches with a full compliment of genuine Axial green tags. imag00656 First up, I got those heavy duty bevel gears assembled. imag00657 Maybe not glamorous, but definitely durable. imag00653 Next step was to throw those differentials into the axles.  See those Beef Tubes? This is only non-Axial modification I did to my build. imag00666 I also added some extra bling with these aluminum diff covers (AX30829) imag00649 While these add some extra strength to the axles, the real reason I did this was to lower the center of gravity a little (BT004B). You can check out Beef Tubes at www.beeftubes.com
imag00665 The Beef Tubes just slid right into the plastic housing.  All the necessary holes have already been milled and threaded for you. imag00658 A slight modification had to be done to the drive shafts to get them to slide though the Beef Tubes. You can see the shaft on the left has been milled down a tiny bit, approximately 1mm. imag00663 It’s easily accomplished with a drill and a file.  Spin it for a bit and check to see if a will slide through the Beef Tube. imag00664 Yup, that’s what I was looking for.  You need to do this on both sides. imag00667 My next hop up was adding aluminium knuckles, hubs, and rear lockouts (AX30760, AX30762, AX3078). imag00668 Don’t forget to add the bearings when installing the rear lockouts. imag00671 While I was at it, I added aluminum link mounts (AX30830). imag00689 Looking pretty good so far. imag00690 Next step was to build the aluminum steering and suspension links.  These are standard kit parts. imag00693 Right in the middle of my build, I discovered a few new bits updated for the RR10, new diff covers, steering knuckles, and link mounts (AX31429, AX31434, AX31433). The new link mounts add the mounting location for the rear sway bar. imag00694 Dang, those new diff covers are beautiful. imag00695 Started to look blingy, just like I like it. imag00698 A little more bling added with the links installed. imag00699 Time to get the transmission built.  I added the aluminum motor mount for added cooling, well really it was for the bling. You might have also spotted my decision to add the 2-Speed transmission components.  Just what the doctor ordered for high speed running and low speed crawling the Altra Ultra 5K calls for.(AX31156, AX31181) imag00700 No wimpy plastic in this transmission, heavy duty steel only. imag00710 Here’s that 2-speed going together.  Don’t forget to order an extra servo for shifting. imag00701 Boom, heavy duty power blaster! imag00712 These shocks are shiny! imag00772 All mounted up and ready for the cage to go on.  Oh, do you see the custom wraps back there?  If you’ve read my other blogs, you know I love the P40 Warhawk, so I contacted Jay Kendall over at SOR Racing to hook me up with some customized wraps.  He added the Altra logo and my name to the wraps.  He also customized my colors to match my wheels.  He can customize yours for you as well.  Check his work out at www.sorgraphics.com IMAG00154 A couple more goodies showed up during my build.  First up was the aluminum shock spring retainers.  These look great and match the blue anodized caps on the shocks (AX31431). IMAG00155 The other bit was the new aluminum servo mounts and servo horns (AX31432, AX30836). You can also see I used Tactic TSX55 servos.  They are a slight upgrade over the servos that come on the RTR version of the RR10. IMAG00147 (2) The AE-3 ESC and Vanguard motor mounted up nicely and should be plenty powerful enough (AX24260, AX24010). I also got the cage built up and my SOR wrap applied. IMAG00153 Here’s the reason for the orange wrap.  I wanted to use the orange Method Beadlock wheels (AX31364). I think it’s going to be the best looking at Axialfest 2017.  Will there be a Concourse class for the RR10 Bombers? IMAG00023 Skeeno Jr. was feeling a little left out until she found the green tape in the garage.  Inside was a custom wrapped RTR version of the RR10 Bomber courtesy of SOR Graphics.  Now, I have a training partner to get my cardio ready for running 3.10686 miles.

A1653LOW_BlackOrange

One last Pro Tip to end this blog, the new Hawtness is to color match your shoes to your rig.  Since this build is for the Altra Ultra 5K Enduro, I guess I’ll need to be picking myself up a pair of these Altra Lone Peak 3.0 trail running shoes in their waterproof NeoShell.  With all the precipitation the Sierras got this winter, we’re bound to see water at Axialfest 2017. You can check out all the awesome Altra products at https://www.altrarunning.com/

IMAG00181 So there they are, the Team Skeeno Axial RR10 Bombers ready for the Axialfest 2017 Altra Ultra 5K Enduro.  You better get building, so you are ready to compete at the World’s Largest RC Celebration.

Parts List for Skeeno’s Altra Ultra 5K RR10 Bomber Build

AX90053 RR10 Bomber Kit

AX30829 AR60 Low Profile Differential Covers

AX30760 XR10 Aluminum Steering Knuckles

AX30762 XR10 Aluminum C-Hub Carrier

AX30789 AR60 OCP Straight Axle Hub Carrier

AX30830 AR60 OCP Machined Link Mount

AX31429 Machined High Clearance Differential Cover

AX31434 AR60 Machined Steering Knuckles

AX31433 Machined Link Mounts

AX31156 Machined Adjustable Motor Mount

AX31181 2-Speed Hi/Lo Transmission Components

AX31431 Aluminum Shock Retainer

AX30836 Aluminum Servo Horn 25T

AX31432 AR60 Machined Servo Plate and Mounts

AX31364 Orange 2.2 Method Beadlock Wheels

AX24260 AE-3 Vanguard Brushless ESC

AX24010 Vanguard 2900KV Brushless motor


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