Introducing a 3D printed Rock Crawler with metal axle gears- Thumper -Free STL on Printables.com
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- Опубліковано 23 січ 2023
- 3D printed 1:8 Scale RC Rock Crawler by Black Crow.
STL files are free on Printables.com link to pages below
STL files for Chassis - www.printables.com/model/3234...
STL files for Transmission - www.printables.com/model/3568...
STL files for After Market Parts - www.printables.com/model/3568...
STL files for GoPro mount - www.printables.com/model/3720...
Please check out the website that I go to when I want to enjoy a model that I did not design. The gold standard in 3D printed RC cars 3Dsets.com
excuse my stupid question, but isn't a Low Kv motor better suited for Rc Crawling for more torque and low speed during crawling manoeuvres?
Absolutely! Good question. The size of the motor somewhat puts a limit on the kv available. These low kv motors were designed for aircraft. Larger propellers turn slower. So the larger motors tends to be lower kv. This why the fastest jeep with the biggest motor has the lowest kv. I had to make up for this in the transmission ratios.
Crawler- 1,000kx at 32:1 is a very fast walking speed
Crawler/Basher -1,450kv at 24:1 is twice as fast.
Basher - 800kv at 7.5:1 is almost twice as fast again.
The friction in the 32:1 ratio also helps keep the crawler from rolling back. Why use these motors? Low kv.
@@RockyTop_BC did you considered making a brushed motor setup? And for the basher setup, would be there an open diff option in the future?
@@ripmax333 I can look into both. I have a few modifications/upgrades that I am working on. Open diff for the front is on the list.
@@RockyTop_BC that would be great! Because with the basher setup it can also be used on high grip surfaces and also indoors.
Did you have problems with the gears melting due to speed?
Very Cool RC! Naice Spot to Crwal!!! Loved and Subscribed!
Thanks, I have been working on the CJ7 so long I can't really see it for what it is anymore. LOL... I came across the rocks on a bike trail. It is part of an unused obstacle course.
@@RockyTop_BC 🐼👍🏻Congrats for the Build and have fun with the CJ7!!!
Very cool project!
Hey! Thanks! That is high praise from you!
For anyone reading this, Check out @casadioDesign's 3d printed RCs - www.youtube.com/@casadioDesign/videos
@@RockyTop_BC Awesome, thank you so much my friend! 🤩
This should have a lot more than 20 likes. Awesome job
Thanks! LOL According to the analytics, UA-cam keeps showing my videos to Lego people and the Florida mud bog people. ... They are not impressed. 🙄The UA-cam robot is just recently paying attention to the 3D printed and RC tags.
@@RockyTop_BC yeah, I've find it by explicitly searching for a 3d printed crawlers.
This is great - I like using timing belts with 3d prints. Might have to make this to go with my new SCX24.
I have fond that the belts are a lot stronger than regular gears. The gears put all the stress on one tooth at a time while the belts divide the stress over almost half the teeth.
Yeah I've gone to them for my combat robots, found them light and reliable. I had a belt 3/4 cut and still go two more fights!
Nice build! 3d printed rc are more fun you can change it any way you like.
Thanks, Now the trick is to stop changing it. It turned out better than I expected, I really didn't expect it to climb so well. I thought it would be more top heavy.
Impressive. What material did you use to print?
Thanks! Every part on these two models is Inland PLA plus. It is the best China filament that I have found. The US/Canada filaments that I have tried are to soft and deform over time. I am am slowly switching to Prusa blend filament. Prusa filament is expensive in the US but getting more affordable.
How long did it take u to print the whole thing and how much does it cost total if u already have axles and a motor and esc
It takes about 16 days of continues printing. without axles, motor and ESC I am guessing around $75
@@RockyTop_BC ok I’ve been printing this masterpiece and it’s amazing
Well Thanks! I got helpful input from a few builders that improved the model@@Stealthfoams
hello nice build great job,i would like to print this too! but is there a guide for it ?? if you dont mind me asking
Yes, On Printables.com I have a list of assembly videos that show real time every part with part number and information on every screw. You can also see the vides list in my UA-cam play list.
@@RockyTop_BC thank you very much👍
So I have been building the thumper. Haven't had an issue with it so far except for when i got to the axles. when setting the bearings. it cracks the housing. How much should I scale the print for the bearings to fit properly. other than that I am enjoying this project.
Sorry you are having trouble. What axle part is cracking? Center or housing? I can make the bearing recesses slightly over sized.
the center section that holds the 2 bearings
@@RockyTop_BC
And also do you have a print file for an adapter from the Hub to a 12MM HEX so i can use regular rims.
@@RockyTop_BC
@@user-dv6uk4xq2j I just added Axle centers with 0.2mm larger holes in the requested parts section. These Centers look different but function the same. They also have an option to add two M 2x 18mm with nuts to improve layer strength. These are an improved designed for the Morrigan. Tell me if these are still too small. You need parts 319 and 320 www.printables.com/model/396992-requested-and-retired-parts
@@user-dv6uk4xq2j The axles and axle pins are hobby standard. You just need the aluminum 12mm hex hubs. Plastic 12mm hub centers cam out and break too easy.
You built a great model think Jeep XJ or Wagoner body
I was thinking Banana... If that means anything to you. Seriously though, small updates and minor improvements on Thumper are taking quite a bit of unexpected time. So it will be a while before I start a new truck.
@@RockyTop_BC I know it's a lot of work in free time but this cj7 came out really well. I have 8 printed cars from different creators and yours is very very good and I will build it for sure
@@kwiatek8790 Thanks! If you have any problems with the design make sure to message me. I can't fix everything but I will do what I can. No need for others to have the same problem when it can be fixed. ... and as always - "I like options"