Custom Crawler Chassis based on SCX10 Carbon Rails

General description

I was looking for a simple, flexible and affordable chassis for my many scale crawler projects.  Nothing was optimal and I developed something myself.

The chassis is based on the TFL-Racing carbon rails for the SCX10 Gen 1. These are available as a knockoff for 10€ in China (AliExpress etc.).

I usually order the skid as well (see pictures). The aluminum skid must 70mm (rail to rail). Otherwise, many parts won't fit. However, I've included a printable version.

Wheelbases from 275 to 324 mm can be realized with the chassis. The links are also based on the SCX10 Gen 1 (equal length front and rear), so you can use them as a guide.

SCX10 gen 1 links fit 100% to SCX10 gen 1 and 2 axles and many knockoffs like the MEUS portal axles.

The servo must be mounted on the axle. Chassis-mounted servos are not permitted.

I've saved most of the parts for the left and right sides of the chassis. However, there are also files for just one side (L+R). These need to be mirrored in the slicer.

Almost all holes are designed for M3 screws. Many parts require M3 nuts to be pressed in, or the screws engage directly in the 3D printed part (hole diameter 2.6 to 2.8 mm).

I have uploaded photos of the finished vehicle for all body mount versions.

Printed everything in PLA+ and 15% infill and the parts are super stable.

Files will be updated as soon as I add a new body or discover errors.

Detailed parts description - rail and skid:

• rail /  just to illustrate, I plan to produce them via send cut send

• skid / large stable skid, I recommend the original aluminum skid (bolt pattern for axial scx10 3gear, element stealth or vanquish 3gear)

• skid V2 / not as stable but much more compact

• skid ultra low / to place the gearbox as low as possible, with integrated sliders and floar pans, lcg  gearbox recommended

• skid ultra low connect / connects the skid with the rear all in one part, makes the chassis even more stable (see photo)

Detailed parts description - brace:

• brace front shocktower / connection between the front shock towers at the height of the rails, requires the shock tower backplates

• brace rear shocktower / connects the rear shock towers, all in one version of the rear bumper mount recommended to save this part

Detailed parts description - shocktower:

All front shock towers need the shocktower backplate to make them very stable.

• shocktower front backplate / m3 nuts must be pressed in, serve to connect the shock towers super stable with the chassis

• shocktower front / standard version, suitable for all body types

• shocktower front high / slightly higher and good for shock absorbers up to 110mm

• shocktower front long / shock absorbers can be adjusted slightly more angled, LCG crawler etc.

• shocktower rear / standard version optimal for 313mm wheelbase

• shocktower rear offset / version with offset for very short and long wheelbases, can be mounted facing forwards and backwards

• shocktower rear low / for scalers with flatbed like rc4wd k10 or mojave

Detailed parts description - bumper mount:

• bumper mount front / 43mm eye to eye, scx10 gen 1 and 2 bumpers fit

• bumper mount front long / extended to the vehicle front, more stable but also requires a large body

• bumper mount rear / rear version

• bumper mount rear all in one / best version that makes the chassis extremely stable and also offers space for a battery

• bumper mount rear all in one long / stand out a little further for bodies that have a very long

• batterie plate rear ultra long / very long version which cannot accommodate a bumper

Detailed parts description - e-plate:

• e-plate top / space for electronics and batteries above the servo, mounted between shock towers

• e-plate top long / slightly longer version, may cause problems with some bodywork

• e-plate top long + front long / was also extended to the front of the vehicle, only fits very large bodies

• e-plate top stand / connects the e-plate with the bumper mount, makes everything extremely stable

• e-plate top short / front and rear slightly shorter for narrow bodys

• e-plate mid / located between the front axle and gearbox between the rails, space for batteries and electronics (only suitable for short engines), required brace front shocktower

• e-plate mid short / for longer engines, quickrun fusion etc.

Detailed parts description - sideboard:

All versions have mounts for 15x3mm neodymium magnets which will later hold the body. Different bodies can be quickly used on one chassis. Magnets must be glued in.

• sideboard long small / for narrow bodies like the RC4WD Mojave

• sideboard long wide / for wide bodies like the RC4WD Blazer

Detailed parts description - Reciver-Box E-Plate Combo:

These parts are all connected to each other and form a very stable front part of the chassis (see photo). To cover the receiver boxes the e-plate top long V2 is required. All shock towers can be used (shocktower front V2 recommended). Only testet with 313mm wheelbase an LCG gearbox with stuby.

• box / large box for receiver or electronics

• connect / to connect the box to the e-plate

• plug / close unused holes

• shocktower backplate L+R part 1 / goes under the box to connect it to the chassis

• shocktower backplate L+R part 2 / not necessary but if you use it, the box and shock tower will be even more stable

Detailed parts description - bodymount:

Previous projects that I have realized with the chassis, see pictures. Almost all have adjustable offset so you don't have to fiddle with the links. Everything designed for screw-free assembly with (15x3 neodymium magnets).

RC4WD Blazer & K10

• bodymount blazer & k10 side / is provided with magnets and screwed to the blazer body, requires sideboard wide

• bodymount blazer rear / screw to the chassis, requires two magnets and an additional two that are screwed to the blazer bed

• bodymount blazer side slider / rockslider that are screwed under the “bodymount side”

Team Raffee / Injora Jeep JK

• bodymount jeep jk frontshocktower-high / requires the high shock tower, works magnetically with 15x3mm magnets

• bodymount jeep jk front bodyside / the counterpart must also be equipped with magnets

• bodymount jeep jk rear / rear magnetic connection into which magnets must be integrated, on the body side the magnets must be attached directly (2x 3mm hole drilling)

• bodymount jeep jk slider / rocksliders that accommodate the lower edge of the JK body require the sideboard wide

RC4WD Mojave 4 Door

• bodymount mojave 4 door side / is screwed to the inner side of the rc4wd body

• bodymount mojave 4 door side magnet / magnetic holder which can be screwed to the side holder depending on the offset / print a total of 4 pieces

• bodymount mojave 4 door rear / rear magnet mount (two magnets must be glued in), screw to the chassis, screw the body magnets directly to the bed

Team Raffee Landrover Discovery 

• bodymount landrover discovery side / requires the sideboard wide, existing holes under the side doors must be drilled out to 3mm to connect the holder to the body

RC4WD Mojave 4 Door / Ultra Low Skid (requires the ultra low skid)

• bodymount (ultra low) mojave 4 door side R / mirror in the slicer for the other side, scrtew it to the body with M3x8 Screws

• bodymount (ultra low) mojave 4 door magnet L+R / glue it to the side part and put 2x neodymium magnet to it with glue or screws