RC10Talk - The Net's Largest Vintage R/C Community

Most of the parts are now almost ready to print. I just need to modify steering servo position towards the front.

Adjusted steering servo position towards the front. Its now in the correct position when thinking about the steering geometry. It wasn´t an easy task, because this plastic chassis concept really isn´t meant for this. The front servo position needs an chassis integrated servo mounts, because there re...

Just for curiosity and delusion of grandeur, i ordered RB6.6/RB7 laydown transmission case. Lets see what can be done with that. Fiddled around with the rear motor configuration and tested swapping it around. Lots of stuff would need re-design if i just simple wanted to use rear motor gearbox with r...

This project is starting to turn away from RT5 SP1, but i think its fine. I had to do so many modifications, that the chassis lost is compatibility with previous parts and most of the official parts. It kind of looks like a RT5/RT6. https://hitecmods.kuvat.fi/kuvat/RC/Ultima%20RT5%20Service%20Pack/R...

Thanks for the feedback! I'll see if i have time to make the changes to the idler tomorrow and i will send you the updated .stl free of charge. The gearbox cover with rear susp supports looks awesome btw! I might have to silently use that idea in my own chassis as well, cause that looks slick! Your ...

Hey silvertriple, just to double check, did you mean i should just extrude the bigger gears whole face towards the motor by 2mm, without doing modifications to the outer face, or moving the whole bigger gear towards the motor by 2mm? This is now the version where i moved the motor side faces (big ge...

Thank you, this information is perfect!

Heres is how the front end and the chassis looks in rear motor configuration (dont mind the slight offset in some screw locations, those will be fixed in later stage of the development.) https://hitecmods.kuvat.fi/kuvat/RC/Ultima%20RT5%20Service%20Pack/RT5%20SP1%20v33.png/_medium.jpg https://hitecmo...

So, after tens of hours of work, here´s how the current version looks like. I dont have accurate idea about the flex the rear chassis has, but im gonna find out when im printing the first prototype from PETG. I suspect theres some work to do on the backend, but now everything lines up and its compat...

First prototype of the rear chassis plate and rear section of the chassis printed from PETG. Just confirmed compatibility with all the different transmission/motor combinations. Looks really nice and feels sturdy when all the screws are installed. Much better than i anticipated! The integrated chass...

And here are the pics i promised. 3D printed main chassis and rear chassis plate (dont mind the strange artefacts in the rear side of the chassis, i dont know what happened in the slicing): https://hitecmods.kuvat.fi/kuvat/RC/Ultima%20RT5%20Service%20Pack/20211104_124916.jpg/_medium.jpg https://hite...

Thank you, I like it too! Actually looks at least semi-professional. :) Just assembled the upgraded RB6/RB7 style front end to it, which also fits nicely. From now own it _should_ be smooth sailing and just designing and printing the smaller and easier parts. Cant wait to test it! Edit: Some test as...

How do the mounting posts & standoffs hold up with 3D-printed material compared to the original plastics, as far as self-tapping threaded parts go? The first car that i remade in Fusion 360 was Ultima ST EP Type-R. In the first chassis that went to use was the same PETG/CF material that i use n...

Great work as always!

Just sent you the .stl:s for updated custom idlers (2 different designs) and the radio lid. I hope they work nicely.

Also eager to see how you like those Super Arms.

No problem! Some people are pretty harsh to judge 3D printing as a manufacturing tech for RC cars. And for a good reason. But as i see it, yes, there are limitations (like every other technique), but the can be dealt with, if the limitations are carefully thought out in the design stage. Heres somet...