Euclid R-62 dump truck

[kerst]

Euclid R-62 in scale 1/24

My next project is something completely different. No crane this time!
My main fascination is with cranes, but I also love earthmoving equipment.

The intention is to make this dump truck fully functioning and able to handle tough conditions.

https://c2.staticflickr.com/2/1969/45334717101_c5ce57160d_b.jpg

I started with the axles. I will make axles with planetary end drives and lockable differentials.
These are the parts:

https://c2.staticflickr.com/2/1909/45334718991_1a504299b4_b.jpg

Planetaries come from this motor:
https://c2.staticflickr.com/2/1915/45334718541_1fee5ac05e_b.jpg

The axles are taking shape:

https://c2.staticflickr.com/2/1929/45499837832_3efe157cd4_b.jpg

https://c2.staticflickr.com/2/1975/44421413355_f2a2eb9a48_b.jpg

https://c2.staticflickr.com/2/1924/44802791384_f24719b672_b.jpg

https://c2.staticflickr.com/2/1908/31655819398_862169a912_b.jpg

Kerst

[Zabco]

Cool, old school brute. Will be looking forward to seeing more. What scale?

Oops, never mind, you stated what the scale was at the very top of your first post. I was so focused on the photo that I didn't see it.

[Jared]

Wow, this is gonna be cool!

[modelman]

Great project-this will be fun to watch. Good to see scratch building happening again on this site. If this is any where near the quality of your cranes it will be spectacular!!

[kerst]

Great project-this will be fun to watch. Good to see scratch building happening again on this site. If this is any where near the quality of your cranes it will be spectacular!!

thanks,

Kerst

[skeeter]

This will be an AWESOME project to watch progress along!

[9W Monighan]

I knew you just couldn't resist making one to play on the dirt pile.

[kerst]

I knew you just couldn't resist making one to play on the dirt pile.

yes, I want to play in the dirt.

Kerst

[frizzen]

That's gonna be pretty cool.

Ya got him wanting to play in the dirt, next thing ya know a crane is going to be pushed into Dragline or Clamshell operation...

How long are those gearmotors, not counting the shaft?

[kerst]

That's gonna be pretty cool.

Ya got him wanting to play in the dirt, next thing ya know a crane is going to be pushed into Dragline or Clamshell operation...

How long are those gearmotors, not counting the shaft?

This picture shows the dimensions:
https://c1.staticflickr.com/5/4900/43929971120_a988f9e636_o.jpg
I hope the gears will be strong enough. we will find out.

Kerst

[kerst]

A little update:
I build the front axle. Here are the 3 axles lined up.

https://c1.staticflickr.com/5/4845/31679128747_2808c39d0c_b.jpg

Kerst

[sparkycuda]

Your craftsmanship is always superb so this will be another awesome build!
Can't seem to find a spec sheet on the real truck, what are the general dimensions in 1/24th scale?
Sorry I can't make Cabin Fever this year, so won't be able to chat in person, but hope everyone has a great event.

Ken

[kerst]

Your craftsmanship is always superb so this will be another awesome build!
Can't seem to find a spec sheet on the real truck, what are the general dimensions in 1/24th scale?

Ken

Thanks! It will be around 18" long.

Kerst

[kerst]

The frame takes shape.
https://c2.staticflickr.com/8/7884/46001185214_7d54047606_b.jpg
https://c2.staticflickr.com/8/7877/45810286495_1f7ca25782_b.jpg

Kerst

[9W Monighan]

This should be very easy and less time consuming than your normal builds.
(No boom and 500yds of rope):D

[Zabco]

Very interesting method of frame construction. How are you holding the pieces together?

[kerst]

Very interesting method of frame construction. How are you holding the pieces together?

With an EPOXY RESIN PERMANENT GLUE.

Kerst

[Zabco]

With an EPOXY RESIN PERMANENT GLUE.

Kerst

Thanks for info. I am looking forward to seeing more of your build of this interesting truck.

[Southgate 1]

Amazing work already! Super heavy duty. A question, how tall are those tires, in inches, top to bottom?

(I havn't been around in a while, and then couldn't log in for ever. Finally got in.) Dan

[kerst]

Amazing work already! Super heavy duty. A question, how tall are those tires, in inches, top to bottom?
Dan

The diameter of the tires is 3 1/4" (83 mm).

Kerst

[DADSGARAGE]

Looking forward to watching this build!!! Interesting truck!!!
KP

[kerst]

I made some good progress on the suspension. The front axle is ready, but the rears need more work. The springs are made from worn out hack saw blades. They are very flexible and only the teeth are hardened, so it is easy to cut them.
https://c2.staticflickr.com/8/7913/46124809955_4e1b5bbcc6_b.jpg
https://c2.staticflickr.com/8/7897/46124809925_c65116648d_b.jpg
https://c2.staticflickr.com/8/7831/46124809975_31110ba879_b.jpg

Kerst

[bobmorey]

Kerst
Really cool looking truck. Great progress so far. Curious it looks like the hubs are plastic? Is that for ease of machining or to save weight? Where do you find details and dimensions for a truck like this? Lastly will you use servo/actuator or hydraulic for dump box?

Looking forward to your progress.
Best regards,
Bob

[kerst]

Kerst
Really cool looking truck. Great progress so far. Curious it looks like the hubs are plastic? Is that for ease of machining or to save weight? Where do you find details and dimensions for a truck like this? Lastly will you use servo/actuator or hydraulic for dump box?

Looking forward to your progress.
Best regards,
Bob

Thanks!
I used plastic for the wheels, both because it is easy to machine and it is light.
I don't have a lot of info on the truck, but there are enough pictures on the internet.
I plan on using hydraulics the dump function. I will make the cylinders myself. That will be a nice challenge!

Kerst

[kerst]

I made good progress with the cab and the hood. The difficulty is finding the right measurements, but I think I am close. It starts looking like a big mean truck!
https://farm8.staticflickr.com/7862/33338259878_8c0e294b65_b.jpg
https://farm8.staticflickr.com/7893/47208183482_8632492812_b.jpg
https://farm8.staticflickr.com/7838/47260047881_1813c6a92e_b.jpg

Kerst

[9W Monighan]

If you come to the watch fob show at Lakeside Sand and Gravel this year,
You could get some from Larry's 1:1 truck.

[RCP57]

:D:D:D:D

[FabOne]

Look'in GOOD!

[kerst]

Thanks!
A bit more progress:
https://farm8.staticflickr.com/7921/46370142365_dde4d44542_b.jpg

Kerst

[frizzen]

That's looking cool

[skeeter]

I'm loving this build. It's looking great!

[DADSGARAGE]

Looks great!! Keep up the nice work!!

[kerst]

Small update on the Euc.

I didn’t have much time lately for a variety of reasons, including a bad cold that kept on coming back.
But I managed to get the drive shafts done. I installed 2 temporary gear motors and that gave me the opportunity to test the truck and worked out some problems in the drive axles.

https://live.staticflickr.com/7883/46864893434_dfe59fb37b_b.jpg

https://live.staticflickr.com/7907/40622848333_bf67b0d4b5_b.jpg

https://live.staticflickr.com/7842/46864893454_58c3c4c7fa_b.jpg

https://live.staticflickr.com/7899/46867832284_4d77492631_b.jpg

Kerst

[Kiffer]

Really looking good can’t wait to see more

[frizzen]

That dual drive setup is slick.

[Kiffer]

What is the plan for the operation of the dump box

[kerst]

I did some work on the Euc. I installed a Mabuchi 555 12V DC Motor, which seems to have sufficient power for this truck. And I built a temporary reduction box, so that I can drive it around and get a sense of the speeds. later I will build the final gearbox.

I tested the Euc in the dirt and took some videos:
https://youtu.be/V9AssoKzzBI
https://youtu.be/zraLPbm_xeM

Kerst

[Krewmember]

Wow, that looks really good! I look forward to seeing it finished.



-Shawn-

[skeeter]

That truck looks GREAT!

[kerst]

I tried a simple mechanism for the tipping. It is basically a geared motor with a small winch pulling a lever, which does the tipping. This is the first try and I managed to lift it with a 11 lbs load. Not bad. Now I can optimize the design and I am considering putting the motor in a different spot. the space behind the cab is perfect for the battery.

Here a video: https://youtu.be/CMy56WsefUk

Kerst

[kerst]

Some action at the cabin Fever Expo. The Euc performed well. And I learned a lot, which will help me finish it.
https://youtu.be/0ddt3ukXhLI

Kerst

[Jared]

Very nice! I was thinking while watching that there has to be some way to attach some kind of noisemaker to the motor that would replicate the Detroit Diesel sound like clamping a playing card to a bicycle so it makes a dirt bike sound flapping in the spokes.

[kerst]

I have been working on the power-shift transmission. This is an experiment and needed some proper preparation, including calculating ratios, making accurate drawings, etc. Quite the challenge!
The Clark series 6000 is the example.

https://live.staticflickr.com/65535/49632289211_812551c8bb_b.jpg

https://live.staticflickr.com/65535/49631798213_435f79153f_b.jpg

I omitted the forward/reverse clutches. An electric switch can take care of that and it saves space.

https://live.staticflickr.com/65535/49632553822_7fbd5e9b36_b.jpg

I use leather as clutch material.

https://live.staticflickr.com/65535/49631766338_0ccb88cfd0_b.jpg

https://live.staticflickr.com/65535/49631766378_c6020aea16_b.jpg

The middle shaft on the left is the input shaft and I still need to figure out how to connect that to the motor, an 540 CRAWLER BRUSHED MOTOR 80T.

I am still making all the components and I am not sure if it all will work.

Making the frame demanded a lot of accuracy. My Southbend was up to it! I did a lot of measuring at every stage to make sure things will fit OK.

https://live.staticflickr.com/65535/49632286836_488633cf2f_b.jpg

So far so good. I plan to control the clutches with 2 servos. W'll see how that works out!

Kerst

[9W Monighan]

Very interesting Kerst. If you can get the original gear tooth counts; Scaling down is no problem.

[Jared]

Scale powershift! I am so looking forward to seeing this work!

[kerst]

Very interesting Kerst. If you can get the original gear tooth counts; Scaling down is no problem.

The original comes with a whole lot of options. I choose for
the first gear a 5.50 reduction,
the second a 3.20 reduction.
the third a 1.75 reduction and
the fourth is a 0.93 overdrive.

this should do the job.

Kerst

[crueby]

I dont follow how that transmission works - is there a website somewhere with an explanation of it?


:thinking:

[kerst]

Thanks for the compliments!
I am in self-imposed isolation in my workshop, so lots of time to work on the Clark transmission.
Here a few pictures of progress. i worked on the clutch assemblies today, still not finished though. Lots of little parts.

https://live.staticflickr.com/65535/49664004556_56141c01ac_b.jpg

https://live.staticflickr.com/65535/49664002041_4e69323e29_b.jpg

I will connect the input shaft (top middle ) with a flexible coupling to the motor with reduction case.
The output shaft (bottom middle gets a bolt-on divider to go to both rear axles.

Kerst

[skeeter]

That looks fantastic!

[kerst]

Due to the crisis I have lots of time for the gearbox. It slowly comes together. I finalized the input and output sides. I hadn't thought about these at all when I started building the gearbox, so some adjustments needed to be made.
I also had to adapt the whole assembly so it would fit in the truck!

https://live.staticflickr.com/65535/49728171976_5de606b56f_b.jpg

https://live.staticflickr.com/65535/49727625078_116ce399da_b.jpg

Next are the levers to control the shifting. See how that works out!!

Kerst

[crueby]

Following along - very interested to see how this functions.


:popcorn:

[kerst]

Today I did my first test run and I took a short video.
It is a 4-speed power-shift and the first and second speed work nicely. The third works OK, but the fourth speed seems to take all the power. Too much friction or too much speed.
I will consider a bigger reduction between motor and gearbox.
Here is the video: https://youtu.be/4hA-Vlfxj6M

Here are two pictures of the whole assembly:

https://live.staticflickr.com/65535/49761975021_7f59b4f558_b.jpg

https://live.staticflickr.com/65535/49762305257_0b9024e614_b.jpg

Kerst

[skeeter]

I LOVE this transmission. Fantastic job building it. Bummer that it is giving you issues. :(

[sparkycuda]

Kerst, it's an amazing concept and build, as usual for you. Maybe the glitch is that you don't have enough machinery moving in this driveline!!! LOL!!! All the shafts, gears, joints, clutch packs, etc. - just a marvel to watch. Are you using servos to engage the clutch packs?
Your design would make a great 2-speed for highway trucks - much less gear slop (free play) than the Tamiya mechanism.
Reminds me of Clark transmissions in the real trucks, with clutch packs on the outside at the end of the shafts.
Anyway, keep up the awesome work!

Ken

[sparkycuda]

Duh!!! Guess I should have reread your initial posts - Yes, you are using servos and Yes it is patterned after a Clark transmission.

Still, an awesome effort!

Ken

[kerst]

Duh!!! Guess I should have reread your initial posts - Yes, you are using servos and Yes it is patterned after a Clark transmission.

Still, an awesome effort!

Ken

Thanks,

I hope to fix the problem by increasing the reduction between the motor and the gearbox by 20 to 30% and i will create space for another motor. If the reduction doesn't do it, an extra motor will! just like the real ones, they also have two engines.

Kerst

[sparkycuda]

Yes, I know about that rework stuff. My Payhauler had a 2:1 motor reduction so top speed matched the prototype. I have three speeds, real one had 7 speeds. I was short on power when bed was full of dirt, so changed to 3:1 - made a huge difference in low end power and seldom need the top end speed anyway, so all is good.

Do you have any in-process pictures of the u-joints you fabricated? Great job with them.

Ken

[kerst]

I added another motor. It might be overkill and it is easy to take it away. I can also easily change the reduction between motors and gearbox. Now it is 1:4. I tried it with the battery with a much steadier output than the transformer. That is good news!
I bought some micro servos to control the transmission. There is not a lot of space, so one of them sits outside the cab.
Here is the motor unit and the transmission:
https://live.staticflickr.com/65535/49845483258_e07fa95aed_b.jpg

Here are both units installed in the truck:
https://live.staticflickr.com/65535/49846022111_8bf457619e_b.jpg

This is the truck with only the transmission:
https://live.staticflickr.com/65535/49846022041_52ed2afef1_b.jpg

The servos:
https://live.staticflickr.com/65535/49846325272_03da2fe107_b.jpg

Kerst

[Lil Giants]

I usually got better run times with two motors vs one, lower amp draw not working so hard. I hooked the two motors together in series, simplifies the wiring.

[kerst]

A short video engaging third and fourth gear.
https://youtu.be/AL-ylbDYD-k

Kerst

[ddmckee54]

With the gear ratios you've got in the transmission what are your scale speeds?

I think you said you tried to stay close to the original ratios in the transmission, but the difference between your electric motor's max RPM and a diesel's max RPM could be why you need more reduction.

[kerst]

With the gear ratios you've got in the transmission what are your scale speeds?

I think you said you tried to stay close to the original ratios in the transmission, but the difference between your electric motor's max RPM and a diesel's max RPM could be why you need more reduction.

With the current gear ratio top speed in scale 1/1 is around 25 mph. The real one can reach about 30 mph.
The electric motor should reach 5,500 rpm, while the diesels do 2,100 rpm.

Kerst

[kerst]

I never thought I would get (into) electronics, but so far it seems to work out.
In the past weeks i worked on all the electric connections and finding space for the electronics, etc. Although the Euc has a huge hood, I had to try various setups in order to find the right setup that fits inside the hood and cab without being too visible.

I bought a 8 channel system. One channel for the speed control, 2 channels for the 4-speed transmission, one for the on-off-on switch for the tipping motor, one for the on-off-on switch for the driving motor and one for the steering servo.

https://live.staticflickr.com/65535/49933880773_1e92097efb_b.jpg

https://live.staticflickr.com/65535/49934395396_18b330f760_b.jpg

Kerst

[kerst]

I found the right paint for the Euc. It looks decent, the color is very nice but needs a second coat and I didn't buy enough!! That means waiting.

https://live.staticflickr.com/65535/50047981376_39b621bbab_b.jpg

Kerst

[JAMMER]

Very nice job on the Euclid alot of thought went into it . Ed

[jerry56]

That truck is a beast.... I can't get over the skill and attention to detail some of the builders have here....and this is just another great example.

[kerst]

It took me just under 2 years to build this truck. It was a lot of fun. The transmission and the controls were the most challenging, but after a lot of tinkering it all works and it is fully remote controlled. The right stick controls the acceleration and the steering, the left one is for the 4-speed power-shift transmission. There are 2 other switches, one for forward, neutral and reverse, the other for dump hold and lower.
I found the right kind of spray paint and I am very pleased with the result. I still need to add some decals and I will also prop up the front suspension. The powerpack is quite heavy!

https://live.staticflickr.com/65535/50126337058_ea90bed66f_b.jpg

https://live.staticflickr.com/65535/50126337108_939c1f5c7b_b.jpg

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https://live.staticflickr.com/65535/50126907931_6394d64679_b.jpg

https://live.staticflickr.com/65535/50126908051_601803bc81_b.jpg

Kerst

[frizzen]

That looks absolutely amazing!!!

Are there going to be covers for the passenger door esc, and right frame servo.

I still can't get over the work you put into the transmission, and would love to see some videos when you're ready

[sparkycuda]

Kerst, just a marvelous build! Transmission is a masterpiece and final result is great.

Top notch project!!!!

Ken

[diesel950]

looks good, been a long poject but rewarding to see finished.
now just to get it dirty

[Mikem]

Looks fantastic

[9W Monighan]

Glad you got this done Kerst. I guess with the big shut downs everywhere gave you time to work on something fun.

[JAMMER]

Amazing what you can do with lots of time. Ed

[Jared]

That looks great! Can't wait to see it loaded, starting out on the flat and then climbing a hill, downshifting on the way up.

[rc_farmer]

Absolutely OUTSTANDING:eek::eek:

[kerst]

Working hard at the Cabin Fever Expo.

https://live.staticflickr.com/65535/53463354848_557ffa37cf_b.jpg

https://live.staticflickr.com/65535/53463637900_bd38145e6b_b.jpg

https://youtu.be/tmLzjhOGvMM
https://youtu.be/JH2VwbPnhyQ

Kerst

[jerry56]

Nice to see it out working... looks great in the dirt...

[frizzen]

That looks great out there!

When was CabinFever this year?

[kerst]

That looks great out there!

When was CabinFever this year?

During the past weekend.

Kerst