4WD Transfer Case for Scale Trucks and Crawl Rigs by GCM Racing.
It doesn't take long to see that a real scale truck build will need a strong transfer case miniature for completion. At GCM, we build scale trucks and crawlers, and know what STRONG means. This tiny and tough t-case will be the ticket to a small mounting footprint and a never-touched assembly that will turn dirt and crawl rocks for ages to come.
Using only the best and toughest materials, this little wonder is assembled with fully hardened and machined steel gears, ground and hardened output shafts, and a billet machined aluminum interlocking case. The 2 included shafts are milled for flats already and make assembly a breeze, and after threadlocking the setscrews in your t-case, there will be no maintenance or slipping gears to worry about. This case was designed to last and handle the harshest bashing and torque, and the case parts fit together in a tight interlock to make sure the gears and bearings stay in line. These cases can handle any terrain and are the final step in making your scale truck driveline just like the full-sized inspirations.
The 'Starter Kit' shown ABOVE, contains 4 bearings, along with the 2 axle shafts and case parts and mounting screws. The 'Starter Kit' REQUIRES the user to supply and shim thier OWN gears for this case. For many this means a great savings, and you may already have 2 matching 20tooth 32pitch gears with 5mm shafts in your collection that will meet the requirements.
For those of you who don't have the gears, the 'Complete Kit' shown BELOW also INCLUDES the internal gears hand picked and matched by GCM and big setscrews for securing the gears to the shafts.
It is also possible to use a Traxxas 2753x Stub Axle in place of the short drive shaft, and then simply attach an Axial ball universal right on to the input for the case, and eliminate the front universal. Stampede, Axial, Slash, and other 5mm drive shafts can be used on this t-case.
The assembly of each transfer case is shown below. The first step is to install the hardened gears onto the drive shafts. Be sure to use threadlocker on the setscrews in this step, and make the screws tight.. you don't want to remove the case later because of missing your threadlock here.
Next step is to slide the bearings on the drive shafts on BOTH ends, and then insert the completed shafts into one case. Apply a small amount of thin grease to the gear teeth.. not much, it will spread around on its own over time. The bearings supplied with the kits are ready to install and pre-lubed for long life.
As you can see with the case design, there is a front and a rear case half. These 2 parts can only fit together one way, and they form a tight interlock. When assembling the case halves in this next step, make sure to assemble the parts straight and level, lying flat on a table. This will ensure the parts mate squarely and will fit eachother easily. If they are assembled slightly crooked, the case parts may bind on eachother. When assembled, there is a seamless finish on the case, and no way to find the split of the front or rear half. No gap should be visible. Install the 3 screws to secure the case sections and use threadlocker on these 3 screws aswell.
After fitting into your scale truck chassis, rock crawler, or field basher, install your drive shaft yoke of choice, and bash away. These units are designed extremely tough, and we have had no indication of gear wear with these drive gears in many other uses where we currently use them. These are tough gears, assembled on case hardened ground precision shafts, in a billet aluminum case with stainless steel bearings. It's going to last.
All T-Case parts are shipped in BLACK anodize finish, and no coatings or grease is applied. Please use some light grease on internal gears during assembly. Please see the info and assembly video below.
Please see the shopping page for pricing and availability.