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Old 06-04-2019, 06:34 AM   #1
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Default Slow going K5 build

About a year ago I had the idea to put together a scale crawler to take with me on camping trips. My plan was to put away a few bucks a week wile I do some research on what to buy. That all changed when the K5 kit was discontinued. I jumped on one of the last kits Horizon had in stock and that began my journey.




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Old 06-04-2019, 06:42 AM   #2
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Default Re: Slow going K5 build

The 1986 K5 will always have a special place in my heart because my parents had one when I was young.

Not this one but same paint.


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Old 06-04-2019, 08:12 AM   #3
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Default Re: Slow going K5 build

Looking to keep the budget low I picked some economical but proven parts.
Flysky GT3C
HW1080
DS3218 servo
Helios 3500 3S

I established a $10 / week spending limit knowing this build would be slow going. Slow because the forever tinkerer in me would want to put my 20+ years of CNC machining to use building some one off part to personalize my tiny truck.



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Old 06-04-2019, 08:29 AM   #4
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Default Re: Slow going K5 build

Just like every project I do I didnít take enough pictures. Luckily I skipped the boring stuff and focused on the custom stuff.

First up is shock building.

10mm internal limiters. Turned from delrin.


Next some brass spring cups for that down low weight.


All together now with the torque twist limiters.


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Old 06-04-2019, 09:14 AM   #5
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Default Re: Slow going K5 build

Nice job on the shocks, great idea!
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Old 06-04-2019, 09:54 AM   #6
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Default Re: Slow going K5 build

Tool tip of the day.

Do you assemble a lot of tiny trucks? Or just hate starting screws in unthreaded plastic. Take a look at this...

This my friends is a roll form tap. Unlike a regular cut tap a form tap has no cutting edges. It has a squarish profile designed to form threads rather than cut them. Not just for plastic. Form taps work great on materials up to and including some stainless steels.
**caution** you must use a larger drill hole for form taps.


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Old 06-04-2019, 09:54 AM   #7
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Nice job on the shocks, great idea!


Thank you!


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Old 06-04-2019, 09:59 AM   #8
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Default Re: Slow going K5 build

Very nice work, looking forward to more! Nice tip on the tap too, much better than cutting threads in plastic parts that can end up too loose!
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Old 06-04-2019, 06:46 PM   #9
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Very nice work, looking forward to more! Nice tip on the tap too, much better than cutting threads in plastic parts that can end up too loose!


Thank you! Somewhere I have a chicken scratch list from your thread with page / part numbers for reference.

Back on the build I took some inspiration from Codyboy for the axels. Often times when it comes to my own projects I cut some corners that I know I shouldnít. In this case I nearly destroyed my rear axle housing. After revisiting the drawing board I took the time to build a proper fixture.
Remember when I said Iím bad at taking pictures? This is one of those times.

With my fancy new fixture I was able to properly modify my housings. Then turned up some brass sleeves. Assemble and drill some holes.


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Old 06-04-2019, 11:23 PM   #10
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Default Re: Slow going K5 build

Nice, any aluminum c-hubs or knuckles in your future? Looks like your axle fixture includes a shim to set c-hub degrees.
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Old 06-05-2019, 06:29 AM   #11
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Nice, any aluminum c-hubs or knuckles in your future? Looks like your axle fixture includes a shim to set c-hub degrees.


Good eye on the shim. That is exactly what I was doing. As for chubs and knucks theyíre on the list but I have other projects ahead of them.

With shocks and axles ready itís time for some outboarding.

Wile I was turning up the rear spacers I decided to make stiffeners for the sliders.

I have something in mind for proper sliders. Just need my spare time to match up with available machine time.


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Old 06-05-2019, 09:30 AM   #12
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Default Re: Slow going K5 build

You people on here kill me, so many guys that are really knowledgeable about setting these things up and capable of doing so much work on your own. I'm still a neanderthal when it comes to these trucks but I'm trying to learn
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Old 06-06-2019, 07:35 AM   #13
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You people on here kill me, so many guys that are really knowledgeable about setting these things up and capable of doing so much work on your own. I'm still a neanderthal when it comes to these trucks but I'm trying to learn


Donít get discouraged. Most of my skills have been gained form the tried and true method of ďtry, fail, learn, repeat.Ē


Starting to look like a truck. Iím not a fan of the glue on wheels though. First step is a means of mounting a proper beadlock wheel.

With a combination of thrifty and handy I whipped up some hubs.


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Old 06-10-2019, 05:51 AM   #14
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Default Re: Slow going K5 build

With so many beadlock options I couldnít decide what to buy. So I made a set myself.

In the pursuit of a somewhat scale look I fashioned some wheel well from old gallon jugs.



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Old 06-20-2019, 05:43 PM   #15
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Default Re: Slow going K5 build

YOur beadlock wheels came out sweet! Inner fenders are nice too, what's happening since these upgrades?
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Old 06-21-2019, 12:00 PM   #16
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How about a rear bumper? It all starts on the computer. For modeling I use Solidworks. For machine tool path I use Camworks.

Once Iím happy with the virtual part itís off to the machine center. For this part a Haas VF-4 SS was available. Nothing like making tiny truck parts on a 50Ē mill.



First operation is called 5 side because Iím finishing the top face (what will be the bottom of the bumper) and the outside.



Next is called flip and deck. This finishes the opposite surface.



Complete assembly ready for action.


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Old 06-21-2019, 01:12 PM   #17
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Default Re: Slow going K5 build

Awesome work! Iíve built several things for my ascenders with a lathe and a few other crude methods but nothing to the precision you are. Totally awesome. Iím loving the pictures, design, and style youíre going with and canít wait for the next over the top piece.

Ben
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Old 06-21-2019, 02:04 PM   #18
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Wow the wheels and bumper are awesome! Incredible! Awesome work so far! I can't wait to see how this build progresses.
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Old 06-21-2019, 02:53 PM   #19
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That is easily the nicest bumper I've ever seen on an rc! Just like the one on my old man's '78 K25 (GMC.) Excellent work sir!
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Old 06-24-2019, 04:08 PM   #20
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Default Re: Slow going K5 build

Thank you everyone for the kind words.

So far it has been smooth sailing but Iíve reached the point I have been dreading. Paint. Luckily my local hobby lobby has an excellent selection of createx paint products.



Not being a fan of the detail stickers I masked and hand painted the window and body trim black. Unable to find a suitable brown for main body color I mixed my own by combining black and red.



Now on to the tan. Yup had to mix that also. Some yellow and white did the trick.








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