MyRCCar MTC Chassis Building Instructions: Make your Monster Truck or Crawler RC car

thingiverse

##MyRCCar MTC Chassis BUILDING INSTRUCTIONS **This assembly instructions will try to complete the info in [MyRCCar 1/10 Monster /Crawler Chassis with Configurable 270 to 330mm Wheelbase](https://www.thingiverse.com/thing:2942931). If you read the thing summary and you need more info I hope you can find it here :)** Remember that after publishing the main chassis thing I also published a [Reduction Gearbox](https://www.thingiverse.com/thing:2949135) and some [Upgrades](https://www.thingiverse.com/thing:2960668) you must know as well to fully understand this instructions. This car is intended to use sourced transmission, the same as in OBTS Chassis. There are many sourced parts, including Wheels, Shocks, CVDs, Central Dogbones, Differentials, Pinions, Bearings, Screws and Nuts... and don't forget All the Electronics!!! including, Motor, ESC, Servo, Battery, Charger, Radio+Reciever... Take a look to the new parts and links for the pickup in this [video of MTC+TPB highlift](https://youtu.be/tlIHbWKtQcE) Remember you can also see the MTC Chassis in action in this videos: [First VIDEO](https://youtu.be/ElBD_6hXfq4), [Speed Build Test Drive of the MTC Chassis](https://youtu.be/EprtyTaEj4c) and [MyRCCar MTC Chassis with the Typical Pickup Body in Action!](https://youtu.be/BoferANebmE) ###Pre-Concepts: (any correction welcome) - **Scale**: The proportion between the real size of a thing and the size of a model or drawing of it. As you probably know, I like 1/10 scale for its simplicity in metric system. 10 meters in real size will be 1 meter in 1/10 scale. A 500mm diameter real wheel will be a 50mm wheel in 1/10 scale. - **Wheelbase**: The distance between front and rear axles. - **Caster**: The rotation of an axle (front or rear) and its suspension system over itself. They vary caster in sourced RCs in many ways, I try to rotate all the related parts certain degrees over the axle center. - **Camber**: Is the inclination of a wheel relative to its normal position. - **Toe**: The convergency or divergency of wheels in an axle. If the alignment of the wheels of an axle converge into a point in the forward direction I think they call this "Toe-In", while if they diverge they call it "Toe-Out". This "deviation" can also be measured in degrees. ###Options, but not so much: This chassis should allow you to build a Monster Truck, Scale or Crawler RC car. By now, there is only one option for the kind of suspension, independent one, but I hope I can use most part of this chassis in the future to build a multilink suspension version with rigid F/R axles. The transmission system is the same than in OBTS chassis but you can use a reduction gearbox with differential instead of the simple central differential. **The main option in this chassis by now is THE WHEELBASE**. The main measures for the chassis are similar to the ones of an Axial SCX10 and allow you to build a model with a wheelbase from 270 to 310 mm just moving the front and rear platforms. If this is your case, align all four holes from the center side bar and the F/R side bar. If you want the extra 10 or 20 mm to build a 320 or 330 mm wheelbase model you will also have to displace Front and/or Rear side bars those extra 10 mm so just 3 of the holes will be aligned. ***But wich wheelbase should I use?*** If you have in mind to build a Scale car you will want it to have the same wheelbase than your real car model. With this chassis the exact available wheelbases are 270, 280, 290, 300, 310, 320 and 330 mm. If you want to use the [FJ Cruiser Body]() or the [Typical Pickup Body]() you must build a 270 or 280 mm wheelbase for the FJ Cruiser and a 290 mm wheelbase chassis for the Pickup. I recently published a longer bed for the pickup to make 310 mm wheelbase version. And now that you know your main wheelbase you must know wich front partial wheelbase and rear partial wheelbase you want. If you plan to use big motors (longer than 50mm) you will need 145 mm front partial wheelbase or bigger, 135 mm version won't be enough. Also, if you use same partial wheelbase in the front and the rear, you will be able to use same length central dogbones. If you don't want to "re-design" the adaptors for the FJCruiser and the 290 Pickup Bodies use 145mm front partial wheelbase and 135mm rear wheelbase, is also the one I will use as an example.