Max Speed Technology XXX-D Chassis Build Max Speed Technology XXX-D Chassis Build

Driftmission.com presents the MST XXX-D Shaft Drive Chassis


This is the 3nd chasssis released by Max Speed Technology. The first two were belt driven chassis, MS-01D and FS-01D! Their unique design made them an instant hit with RC Drifters everywhere. The latest MST XXX-D chassis is the first shaft driven chassis for Max Speed Technology. Configurable as a front or rear motor, this chassis has been designed with RC drifting in mind! The XXX-D comes with a 1.32 Countersteer ratio, with more CS gears and ratios planned for the coming months.

Drift Mission was lucky enough to receive the XXX-D Special Red edition directly from MST. This really is a beautiful chassis! It was a pleasure to disassemble and rebuild.

The UNBOXING of the XXX-D Special Edition is available at the following URL: http://driftmission.com/max-speed-technology-xxx-d-vip-unboxing/

THE BUILD

Although the chassis comes assembled, we always disassemble and rebuild it (This is not recommended unless you are confident in re-assmebly) the kit does not come with assembly instructions. The carbon fiber parts were all treated with CA glue. This chassis comes 90% loaded with options parts. MST did a great job with XXX-D assembly. The screws were adequately tight, all the turnbuckle lengths were matching. All you need to do to run it out of the box is install electronics, build dampers, grease CVD’s and moving parts.

The Carbon
The XXX-D includes full carbon fiber main chassis, upper deck, F/R damper stays and battery mounts. The black carbon adds very good contrast to the Red aluminum parts on the chassis. The carbon is high quality and laser cut to perfection. Some quick sanding and it was ready for CA glue.

Carbon Thicknesses:
Main chassis ~ 2.5mm
Upper deck ~ 2.5mm
F/R damper stay ~ 3.5mm
Extra stiffeners ~ 3.5mm

Aluminum Bulkhead
Red Aluminum! The design is different from MS-01D or FS-01D, it is shaft driven after all. it is a 2 piece lower bulkhead replicated front and rear. Made of high quality aluminum and precision machined!

Front Bulkhead and Motor Mount
This is the front motor version, so the motor mount is up in the front section of the chassis. We had assembled the front bulkhead assembly on the chassis itself. We highly recommend that the spur, center axle and bulkhead be assembled before bolting on to the main chassis. The most interesting part about the front bulkhead is the motor mount slider!

Rear Bulkhead
This should be assembled out of the chassis and the center shaft installed when fastening the bulkhead to the main chassis.

Progress so far…

Steering Bridge
The XXX-D utilizes a very smart and unique steering system. The steering bridge rests on a set of bearings and slides back and forth. This ensures that steering from side to side are always equal to each other. There are two positions at the edge of the bridge for adjustment.

Front Differential
Both front and rear differentials come with a plastic cover to protect the gears. The front one-way is included in this XXX-D chassis package. Front gear box is equipped with 40T/16T gears, with plans for 36T/17T, 40T/13T and 42T/11T gear sets.

Rear Differential
Rear differential gears are also protected by a plastic casing. The rear differential is a solid spool with stock complete with 34T/18T gears; 36T/17T and 40T/16T gear sets are planned to future release.

Upper Chassis and Aluminum Braces
The upper chassis plate is equipped with two red aluminum braces on each end. This adds some greater stiffness to the actual front and rear assemblies without sacrificing chassis flex for mechanical traction.

Front and Rear Damper Mounts
Front and rear damper mounts are very similar in shape to the MS and FS chassis. The carbon damper mounts are now 3.5mm thick for greater rigidity to support and aid dampers rather than hamper them. Two additional screws fasten the damper mounts to the mid chassis.

Upper and Lower Suspension Arms
The lower suspension arms are the same to MS and FS chassis. They difference is the way they are mounted to the bulkheads. The two piece bulkhead requires ball connectors to connect the lower suspension arms to the body. The upper suspension mounts are also mounted with ball connectors. A difference from the MS-01D and the FS-01D is the way the ball connectors are mounted. Previously in the other two chassis, they were held on by phillips ‘+’ screws. Now they are hex top (2.5mm or 3/32″) ball connectors. Now it makes disassembly much easier! Once again the front upper suspension mounts allows for caster adjustment!

Progress so far….

Rear Uprights with Calipers and Aluminum Brake Discs
The XXX-D uses the same knuckles as the previous MS and FS chassis. The mounting position of the knuckles are still on the rear bulkhead, so this allows for dynamic toe when utilized properly. It is quite a useful feature if you know how to use it!

Steering Knuckles/Front Uprights
The stock front and rear uprights are made of plastic, but they work very well. We chose to replace the front uprights with the newly designed short aluminium uprights. These new short knuckles come with several options for ackerman angle. They are also anodized in red to match our chassis.

Universal Driveshafts
In the previous 2 chassis FS and MS, the drive shaft configuration were CVD for the fronts and CVA for the rears. Primarily because the rear did not need the steering angles that the front would require. Now the XXX-D includes CVDs for both front and rears. Remember to adequately grease the universal driveshafts, good, smooth and chatter free operation will depend on it. MST includes grease in the XXX-D package, so use it.

Carbon Battery Holder
The new carbon battery holders are made for mounting a variety of batteries. They allow for adjustable positions for different length batteries. Adjustment relies on 2 screws for each carbon battery holder. The battery will be secured by a long rubber o-ring.

Aluminium Servo Mounts
This chassis included red aluminum servo mounts for low profile servo’s. Also included are the plastic equivalents; both for low profile or normal size servo’s. These add to the overall “bling” of the chassis!

Completed XXX-D
This chassis really is beautiful, MST did a great job designing this shaft driven RC Drift chassis! With the introduction of new CS gears for a variety of ratios, this chassis really does have more configurability available. We cannot wait to get new CS gears for the XXX-D… Here are pictures of the fully completed chassis.