Budhatrain's Tamiya Heavy Dump Truck

Although not considered a traditional monster truck, they still have monster coolness.
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Budhatrain
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Location: Ohio, USA

Budhatrain's Tamiya Heavy Dump Truck

Post by Budhatrain » Sat Jan 02, 2016 4:22 am

This truck is not mine, but I had the privilege to build it.

Ok WOW, has it been a long time since I did any type of build-up. When I saw someone post the idea of the "Review Crew" doing it's thing again, I got excited. Especially with this build, this is the type of build that I wanted to do with my son anyways.

For those of you who are curious what I am talking about... the Review Crew is a group of us RCMT.net members that chip in for a particular RC kit. To be built up and reviewed. We all chip in the cover the cost, we nominate a builder and then do a drawing at the end to see who will end up with it.

The cost of this truck is relatively low... I picked it up from Tower Hobbies for under $130. It comes almost RTR (just need to add radio, receiver, servo and battery. Tower shipped it out quick and it was here within a matter of a couple days. And then it sat... unopened and everyday my son would say "Dad can we open the box now?" I figured Thanksgiving weekend would be a good time... so here we are. First things first, clean the table off!

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Based off of a link that WilliamG shared I was half expecting this first photo... but SURPRISE it's a kit YAY!

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I was super curious about the dump bed, in all honesty, I was expecting lexan but I became pleasantly surprised when I felt the robust hard Tamiya plastic dump bed.


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So then I jump in... for this build I picked up some bearings (not enough though, you will need 24 5x11x4mm), I am using CowRC products and Screw Loose Hardware. I am not able to replace every single piece of hardware for this kit (like shoulder screws and pins) but I am able to do a lot (man I hate Philips head screws). Black 12.9 Alloy baby!

The transmission is a unique layout. The Tamiya GF-01 Chassis is a mid motor design whose sole motor and pinion drive both the front and rear transmission assemblies. Basically each drivetrain is replicated front and back and housed together in this 1 piece mega chassis. The gears are HUGE, plenty rugged for normal bashing. If one was so inclined to add a mild brushless setup to this truck, I would think the transmission would hold together (maybe not the plastic steering components and a-arms). I must note, I totally missed the total number of bearings for this buildup (24). I was under the impression I only needed 12 bearings and later discovered the transmission could use an additional 12 more. For the parts that shouldn't see much debris I opted to use the plastic and copper bushings (I am so sorry). The owner will have to replace these if he so desires. The bearings that I picked up will cover the duties of the c-hubs and output shafts in the transmission housing.

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Need Screws?! Check out Screw Loose Hex Head Hardware here at Clodtalk or go to http://screwloosehardware.com

Team Driver for 2 great companies, visit http://www.cowrc.com and http://store.rc4wd.com/

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Budhatrain
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Re: Budhatrain's Tamiya Heavy Dump Truck

Post by Budhatrain » Sat Jan 02, 2016 4:23 am

I was able to toss some time at this again today. The shocks... oh the shocks. Many of us are familiar with Tamiya plastic shocks, I'm not a fan and still not after putting these together. I feel these will need to be updated sooner than later. Internally they have this 12mm piece of rubber in them, as opposed to oil or another spring. The problem is that the screw/rod/shock shaft gets stuck in this rubber and it binds the suspension. There's not much suspension travel in the truck, the tires probably will carry a majority of the load when actually driving, but yeah... the shocks suck.

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So the battery tray and electronics. I think this set up is cool. Tamiya seems to be getting with the times. The tray has no problem fitting my lipo battery (I remember one kit had an oval mold to it and I needed to grind away). But this sits lower in the overall setup (as opposed to a TLT) and the tray locks everything in. AND check this out, a Brushless esc! I hadn't looked into the details of the TBLE-02 because I saw the brushed motor and didn't think twice. Three wires coming of the unit and it caught my attention! I tried to tidy up the wires and such, this isn't my strong side but everything is in place. I'm leaving everything as much as possible to stock, just so whoever the winner is can adjust accordingly. Like battery plugs, length of wires, gluing the tires etc... But yeah wow, $130 with a brushless esc, bravo Tamiya.

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After that body posts and the wheelie bar. Er...hmm...yeah wheelie bar, for doing wheelies.

The servo is going to mount on the outside of the main bulkhead, wasn't expecting that side mount but it's a compact truck and I don't know where else it could have gone. Kevin gave me a heads up and is donating a servo to the cause, should be here by the end of the week.

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My son loves the wheels, he couldn't wait :-) Without the bumper and bodyposts, the truck looks mighty and tough. I am curious to set it beside a TLT and Mini erevo for comparison sake. After the wheels is when the build started to speed up. I want to say again, how happy I am that the body parts are plastic and not lexan. I was curious about the body post setup, its not bad at all but to transition from closed bed to bed up is a little awkward. I think for those innovative types, making this happen from a third channel shouldn't be hard.


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So we are getting close... just need to finish up the electronics, apply some more stickers, paint some parts and put her to the test!

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Need Screws?! Check out Screw Loose Hex Head Hardware here at Clodtalk or go to http://screwloosehardware.com

Team Driver for 2 great companies, visit http://www.cowrc.com and http://store.rc4wd.com/

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Budhatrain
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Re: Budhatrain's Tamiya Heavy Dump Truck

Post by Budhatrain » Sat Jan 02, 2016 4:23 am

Alright here we go, the last build sequence! I received the CPE heavy duty servo from Kevin, thank you sir. It was pretty simple to install but looks complicated. I am still undecided if I "like" it or not. It's effective... the truck turns left and right :-)

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Now that's all ready to go... I soldered on a deans plug to the ESC, bind and program. The ESC was pretty much ready to go. I had to reverse my steering and throttle on the radio end. It's a little clunky having to program the ESC by turning the truck on and off and waiting for a sequencing of led lights. It's not a castle or anything but in reality, this little ESC is worth the price of admission to me. For a person who has a bunch of trucks I could easily swap these out in a handful of my trucks. Sensored, Sensorless or Brush motors... all for $140, DEAL.

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In my carpeted hobby room, this truck has lots of power and wheelies no problem :-) Whoop Whoop! Tomorrow I will take this down to my carpeted gym with a couple ramps and another truck and I will video tape the fun. It's fun! I don't need to video tape it, but I want to show everyone else what this thing can do.

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Need Screws?! Check out Screw Loose Hex Head Hardware here at Clodtalk or go to http://screwloosehardware.com

Team Driver for 2 great companies, visit http://www.cowrc.com and http://store.rc4wd.com/

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SFC K
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Re: Budhatrain's Tamiya Heavy Dump Truck

Post by SFC K » Sat Jan 02, 2016 4:00 pm

Cool write up Mike! That dump truck does look like a lot of fun. Looking forward to seeing the video. I wish they would have made it so you can raise and lower the bed with a separate servo. That would have been cool!
Jeff

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shadowfocus603
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Re: Budhatrain's Tamiya Heavy Dump Truck

Post by shadowfocus603 » Sat Jan 02, 2016 9:04 pm

Been looking at these myself. My kids love construction vehicles and this could be a fun way to play

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Sixtys Guy
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Re: Budhatrain's Tamiya Heavy Dump Truck

Post by Sixtys Guy » Sat Jan 02, 2016 9:46 pm

Thanks for the build thread. I have been tempted to get the Landcruiser version of this!

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Budhatrain
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Re: Budhatrain's Tamiya Heavy Dump Truck

Post by Budhatrain » Mon Jan 04, 2016 4:20 am

[youtube]4nLpcICvlkk[/youtube]

Here my son is driving it at 50% throttle travel

[youtube]QbMBnxmViGE[/youtube]

[youtube]HtFdoejjNek[/youtube]
Need Screws?! Check out Screw Loose Hex Head Hardware here at Clodtalk or go to http://screwloosehardware.com

Team Driver for 2 great companies, visit http://www.cowrc.com and http://store.rc4wd.com/

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andymac0035
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Re: Budhatrain's Tamiya Heavy Dump Truck

Post by andymac0035 » Mon Jan 04, 2016 5:39 am

That really scoots along @ full power. :thumbsup:

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SFC K
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Re: Budhatrain's Tamiya Heavy Dump Truck

Post by SFC K » Mon Jan 04, 2016 9:30 pm

andymac0035 wrote:That really scoots along @ full power. :thumbsup:
No kidding! I thought it was super cute when he put the ball in the bed for the first time and it fell out immediately. That is a great way to teach him throttle control. :wink:
Jeff

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