MyRCCar 1/10 Big Bore Shocks Complete, 55-110mm 12 different sizes RC Car Shocks
MyRCCar 1/10 Big Bore Shocks Complete, 55-110mm 12 different sizes RC Car Shocks
3D
Published 2020-08-05T10:46:21+00:00
Here you will find all the necessary parts to build a functional RC car shock, from the body to the spring, from the holders to the piston... for a hole to hole length from 55 to 110mm, in steps of 5mm.
Old Price: 6.84
This publication is complete, with 12 different bodies and springs length, 6 different pistons and 2 different length shock holders.
If you take a deep look, there are some parts which need to be printed in TPU. Those are the holders, the "seals" and the piston. This is necessary if you want to run your shock with real shock oil or silicone.
But maybe you just want to give it a try without oil, then you could print the piston and the top seal also in PLA or petg. The TPU holders will be necessary if you want some "flexibility" in the holding points.
As you can see in some of the photos, I'm using the smallest one (55mm) as a key-ring just now :) The same way I used 100mm ones time ago in my pickup, and now shorter ones for my on-road Tesla chassis.
Of course they will wear out faster than sourced ones, but they are very cheap to print and build. The same way and very important, you can use sourced parts from bigbore shocks as O-rings or springs to have a more reliable shock.
And now, how to build it?¿?
All parts but body and spring will be always the same, for all sizes. You can choose between various "pistons" or "bigboreHolders"; I recommend the 2hole piston and the longer holders.
So you can build a shock with 55mm when extended from hole to hole, and also with 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, and 110mm from hole to hole. The longer the shock, the longer the distance it can displace. Please take a look to the drawing for more details about each individual length shock.
As an example, a 80mm from hole to hole shock will need a 3x40mm (3mm piano wire) shaft and a spring of 55mm length, and the most compressed position will have a hole to hole measure of 55mm. So the SHAFT LENGTH must be a HALF the max hole to hole for your shock, and the SPRING about 25mm SHORTER than max hole to hole distance for your shock
The 3d printed springs are not perfect by now, they have some kind of memory when printed in PLA or PETG so if you "pre-charge" them, that new spring length will become with time the normal length of the spring.
So if you want to build some reliable shocks, you will need a minimum of 3mm piano wire, springs and O-rings instead of the "bottom seal". A pair of sourced shocks, the desired size, can be found sometimes at about 5$ the pair in aluminum or plastic, other times you must pay 12 or 15$ fo the pair! If you and your car are not very picky then maybe you can give a try to these 3d printed ones :) The cost per shock is really lower, that would be about 0,60$ including plastic, piano wire, M3 screws and o-rings but also the kW cost. If you find also cheap springs you can have a very functional one for about 1,2$
Will you give them a try?
I distinguish 3 groups of parts in terms of printing.
The first group would be the parts you can print in PLA, PETG or other hard plastics and have "screw" features, these ones are the body, the top cup, the bottom cup and the spring holder head. They must be printed in 0.1 mm layer height so the "screws" really work.
The second group would be the rest of hard plastic parts, which can be printed in 0.2 mm layer height.
Finally the third group would be the TPU parts. As all of them are small, I would recommend to print them in 0.1mm layer height, specially the piston part.
The longer the spring, the harder it will be to print the top part... I can print them more accurate in PLA than in PETG, as this second one is more flexible.
How you print them is very important... All solid, change your perimeter thickness between 0.35 to 0.4 or 0.48 for the best fit and full fill of every wall in each part. If you want real vacum for your oil, use o-ring instead of bottom seal and screw quite hard the top cup with the proper TPU seal.
In terms of performance, these shocks will be obviously under the cheap sourced ones but I think you will be surprised if you give them a try ;)
| Date published | 05/08/2020 |
| Support Free | YES |