Build your own SFX-100 motion platform Part 4 - Actuator Build Up - for Sim Racing

[@henrymetzger9951]

Thanks for your videos, one thing I'd mention during building these actuators is to make sure you put your tnuts in before putting those caps on tight so you don't have to loosen them all again to put the nuts in.

[@wmacky]

Very nice! I'm building mine this weekend, and found this helpful.

[@iulianienesel2005]

the slider i have rescaled on cura on the x ,z axis from 100 to about 98.8 and it fit perfectly , maybe a little too tight on the sliderand the pipe but with just a little force he went inside , you can also try with 99.2 it will work to but it will be a little too wide for the pipe

[@konnichy]

Thanks for the detailed video! One thing I have concerns about however is the fact that the slider is so tight fitted inside the profile. Shouldn't it be just a little smaller to avoid friction, heat and wear of the 3D printed part? (and also require less torque from the motor)

[@duanemassey4560]

In relation to the linear bearings. Instead of what you have there (ball bearings) which can score the shaft. There's another type of linear bearing called igus. It's a type of plastic, so doesn't score the shaft from bearing failure. We use them on much heavier equipment, might be worth considering if you do get failures with these ball bearings?

[@Excelbrains]

Great video! Looking to also build this, could you list all used grease and tools etc you have used and where to buy these?

[@bryancavill6788]

I know this is old but could I use a 300mm screw shaft add a spacer to the top of the actuator body profiled and convert them to 150mm?

[@michaelkowalski3745]

I was looking at actuators in general, not for this specific purpose of sim, but rather as a motor for a press. I have to ask, obviously in sim the steel tube can't jump out due to it's position, but if it were upside down, is there anything keeping the tube from falling out? Is it basically just the tape or something like that? Or does it hit the 3d printed part to prevent ejecting? I wonder if the ball screw could just have a threaded end, would that work? I'm trying to wrap my head around this, not an engineer haha. Thanks!

[@anassakaria]

how reliable is it with 3D printed part? with it break? Whats the life of it before it needs to go into maintenance?

[@lonniefarrare6083]

Ordering mine soon! Thanks for sharing. Is the a way to buy the 3d printed parts?

[@abssnipes]

Hello , thank you very much for the tuto. i watch your vids sevral time. question: the hollow shaft waht is the inner diameter ? is it carbon steel ? I ask because i have a hard time finding it . I am in Canada. thanks

[@ericmelzer]

It's just a 270mm long shaft with a 30mm OD and 20mm ID. Here is a link for one you can order from China: www.aliexpress.com/item/33021103385.html

[@Flatnens]

how much do they cost to build?

[@mehmetbaran3447]

can we make it 150mm long ?

[@GPRaceSimulation]

You would need to check if you can get an appropriate length of ball screw to match.

[@mehmetbaran3447]

@@GPRaceSimulation Thank you, does it need only ball screw to change ? or should i adjust some other minor parts?

[@GPRaceSimulation]

@@mehmetbaran3447 I think only the ball screw needs to change.

[@mehmetbaran3447]

@@GPRaceSimulation Thank you. Any measurements to suggest ?

[@mehmetbaran3447]

what material is the shaft ?

[@GPRaceSimulation]

Hardened chrome hollow bar.