DDW 1/8 RC DOHC V8 Engine

by DarkDragonWing, published

DDW 1/8 RC DOHC V8 Engine by DarkDragonWing Dec 4, 2016
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Designed to be printed at 0.2mm layer height.

This is a custom DarkDragonWing Dual Over Head Cam V8 Engine with a butterfly style intake supercharger. It is a 1/8 scale. Some of the parts are working and moving like a real engine.

Watch how to build this engine: Building DKDGWi 1/8 DOHC V8

Watch it in action: RC Modify 24 | Yeti DKDGWi V8 Supercharged Mad Max Style

Recommend printing "DKDGWi_RC_DOHCV8E_Crank_Coupler.stl" with ABS.

Required Item(s):
1x eBay Amazon MG995/MG996R Servo
1x eBay Amazon 4.3g Mini Servo
1x eBay Amazon 35mm x 3mm Stainless Steel Axle
23x eBay Amazon 683ZZ Ball Bearing 3x7x3mm
122x eBay M1.2x4mm Screw Self Tapping
13x eBay M1.2x3mm Screw Black
1x eBay KENDA 26 x 2.75/3.0 Inner Tube (cut to 5mm)
1x eBay SCHWINN 16 x 1.75/2.125 Inner Tube (cut to 3mm)
1x eBay BELL 700 x 35/43C Inner Tube (cut to 3mm and 1mm)
1x eBay Amazon FRAM CA6366 Air Filter
2x eBay Amazon M3 Bolts For Engine Mounts
2x eBay Amazon Y Servo Wire
1x eBay Amazon MINI RC Servo Signal Reverser
1x eBay Amazon Super Glue

1x 1.1mm Outer Diameter Wire For Spark Plugs
1x 4mm Inner Diameter Tube For Coolant Hose

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how long does it take to print all pieces?

I'm not sure. It depends on the speed of your printer.

where do you find the different size belts ?

Bicycle inner tubes, they are listed in the description.

Could this be scaled down to fit 1/10th scale cars?

If you scale it down, it will not be functional.

Can you by any chance make me one

Hi. I'm sorry, I don't make this engine for sale anymore.

do you need the airfilter? and im confused on the motor, do i use 2 servos or a motor and servo... in the renderings it was a motor but in the description its a servo

I suggest you watch the video. haha It will make more sense. https://youtu.be/pg-M-11hGq4 You don't really need the air filter, but then you can't use the motor around dirt.

Lol... I know I saw the video right after making this comment, I have an on car so I think I'm fine without the filter...

I cant wait to print this.... I really want to print the newer motors too. Thank you so much in advance!

if I had the patience I would totally assemble one

How did you get the 3d belt shown in the thumbnail.which websites.the seventh 3D photo.

Comments deleted.

From where did you get that servo animated model.which website .can you give the link in description

if i wanted to 3d print this for my max tech mustang what would i need to get it working with the car or should i just get a different car to use it for?

You would need a regular 1/10 RC car.

Dear Mackey how did you make the thumbnail animated photos.where did you get that 3d 4.3g servo animated.

I screen shot the photos. I made the servo model.

Dear Mackey can make more v8 engines and sell it on eBay.in also

I have tinkercad,freecad and cura.i am using always tinkercad so I am downloading your files and importing it on tinkercad should I adjust the size or just import it and print it

I don't think you have to adjust the size.

Comments deleted.

1.how did you paint the intake butterfly like as:
red and the rod chrome.
2.which is best to use for controlling the v8 engine:
1.the servo tester.
2.the transmitter and reciever

  1. Paint it all in red, cover the red parts with tape, and then paint the shaft with chrome.
  2. Transmitter and receiver set is best.

can you give the link of freecad because i have an confusionthat:
It's written:
Windows 32 bits or
Windows 64 bits
which bit should i have to download please say it fast please

It depends on your computer. I would say go with Windows 64 bits.

can you give your screwdrivers link that you buy like M1,1mm screwdrivers that you have.please

can you give the FreeCAD and Cura app's download link in the description.

Dear Mackey,
your are my best friend and i am a fan of your i have seen every video like : Rc Modify
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24 or other.but rc modify 24 is the best.you posted a all engines video in facebook but why can't you upload it in youtube.you are my best friends

No problem! I will try to upload some videos on YouTube soon.

I can't get the belts to stay on because there is not sidewall on the pullys. Any suggestions?

Can the side walls of the pullie be taller?

Use bicycle inner tube instead.

Ok, why does a bicycle inner tube make all the difference?

Sorry late reply. Bicycle inner tube is wider and is at the right size.

Can I use normal office rubberbands for the belts, or does the bike tube work much better?

Hi. Office rubberbands should work as small belts. You can try things out.

Comments deleted.

The belts with out theeth are fit better. But i have the problem that the servo motor dont run with the belts mount. Looks like the servo motor is too weak. I use the MG995 servo. With out the belts the servomotor run. How tide are the bycicle belts? Is the MG996r motor stronger?

I see. Bicycle inner tubes are much more flexible, so you might want to try those out. Also, don't adjust the supercharger belt too tight, it will run easier that way. There in no difference in power between MG995 and MG996r.

Hey Mackey, I have already started gathering the required parts. I am really looking forward to this build!
I will have the engine printed completely in ABS and the belts printed with ninjaflex.
But there is one think I'm wondering:
Is the generated airflow hard enough to put "streams" out of the exhausts?
If so - why not try to build a smoke-generator from an e-cigarette... into the engine as well.
I mean - that would be awesome ;)

Greetings from Germany!

Hi. Yes, without the air filter, there will be enough wind for the smoke. Good idea! Cheers!

Comments deleted.

Nice work. Thanks for that im just Print it. Can you make the Belts too so i can Print it with Filaflex?

I got the belts uploaded, let me know how well they work with Filaflex. I don't have any flexible material to test them with at the moment.

Hi im Print the belt and put one Picture in Make. Can you edit the all the Cam Shaft and other rolls with theets?
You have for the bicycle rubber belt in the middle a Ring on this rolls. With the Filaflex Belt Looks like the Belt slide on this rolls with the ring over the theeth. when u remove this ring then the theeth can go theeth on theeth and have better grip.

Does the teeth belt work with the current gears (with ring)?

Here is what I will do:

  1. Upload new gears without the ring.
  2. In case new gears without the ring don't work, I will also include the belts without teeth for you to test.

I have now all the hardware to build to engine.
the belts with theets dont work there are too Long and too thick, thats make them not so much flexible.
The Alternator belt work. For Powersteering is too short it should be approx 4mm longer.
I broke the DKDGWi_RC_DOHCV8E_Cam_Shaft_Driver.stl can you re do it for an steel shaft version?
next i try the Belts with out the theets but first i have to put in a new Cam Shaft Driver gear.

Hi. I just added "DKDGWi RC DOHCV8E Cam Shaft Driver Optional Gear.stl" just for you. cheers

Comments deleted.

Thanks they look great. I have a spool Fileflex here :)
but it takes some weeks till i get the Hardware (screw,servos) to put the engine together. I will write here when i have all together and post some Pictures.

Thanks! Good idea! I will try to make some and upload soon.

This engine is Amazing! I love your builds, and am a fan of your channel for a while. My printer has failed on the Block twice now, What were your print settings for it? I'm printing it in PLA. Thanks for the share, I can't wait to get this thing built, and add a sound pack to my electric converted HPI MT2.

Thanks! How did it fail?
I also use PLA.
Layer height: 0.2
Shell thickness: 1.2
Bottom/Top thickness: 1.2
Fill Density: 25
Print speed: 60
Printing temperature: 210
Bed temperature: 50
Support type: None
Fan speed: 100

Comments deleted.