Xpress released a new 4WD M-Chassis “Execute XM1S”. , the 4WD M-Chassis Belt-Drive Touring Car that inherited the DNA of Xpress full size Execute Sport XQ1S TC. In the last episode,  One RC expert had conducted a product review of this touring car – XM1S.   In this time, this essay shows us how to reduce the weight of the Xpress XM1S that make a lightweight version of XM1s.

Let’s check out how to make a lightweight XM1S now!

Modify Objective: Lightweight

Xpress XM1S chassis kit is set at an advanced level and affordable position. Although the original chassis kit’ performance is good, most of the racer want to custom the XM1S for pursuing higher level performance.

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There have still had some room to improve the performance with XM1S, even the parts coming with the XM1S are good. This essay is introducing how to modify the XM1S. How to make a lightweight version XM1S. I want to build an XM1S with lower weight and higher acceleration, compare with the old one. In concept, it will use less power as the chassis kit become more featherweight. Also, it can improve the car speed as decreasing the gravity of the car when turning. It decreases the stress toward the tire when racing.

Xpress XM1S is suitable for modifying to lightweight as the original package included the front/rear differential mount, plastic spool transmission part, short battery available, etc. Lightweight is the good start as less weight leads the car performance to achieve high-level by calculating the parts weight and remove the unnecessary parts. In street competition/meeting, the lightweight XM1S brings the better racing experience as reducing the stress of motor and ESC. Even for the formal competition, it can insert the balancing weight to manage the center of gravity to achieve the weight requirement.

The following detail is the step of modification

The weight of original XM1S with full gear is 1119g (Without body)

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Frist, Yeah Racing Aluminum Lightweight Hex Adaptor Set!

The purpose of using #WA-035BK is the size of aluminum is smaller than the plastic.

It enables to fix the tire angle in unperfected angle problem when using an original plastic adaptor. Also, the accuracy of control will be improved too.

Yeah Racing – Aluminum Lightweight Hex Adaptor Set 12x5mm

For 1/10 RC Touring Drift Crawler Black #WA-035BK

Find out more: https://bit.ly/2P0uVxB

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Susumu Workshop -Graphite Option Upgrade Set

For Xpress XM1S #SS-0002

Find out more: https://bit.ly/2pVaHaF

Or

Xpress Graphite 2.25mm Bottom Chassis Plate

For Execute XM1 XM1S #XP-10371

Find out more: https://bit.ly/2RPJu61

The 2.0mm carbon fiberboard is the main part of the lightweight project. It can decrease the weight from 110.6g (original) to 63.5g. It can increase the flexibility of the XM1S. You can install the official parts – XP-10371 too.

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Yeah Racing – Titanium Screw (Refer to the manual)

Find out more: https://bit.ly/2CLNfoy

It can drop the weight from 40.8g to 23.9g (Iron Screw) that around 40% weight decreased.

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Xpress Execute XQ1S Anti-Roll Bar Bushing Set #XP-10327

Find out more: https://bit.ly/2J0nxgr

The weight had decreased from 3.7g to 1.3g, compare the original one.

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Yeah Racing Titanium Turnbuckle Set

For Xpress XM1S #XPXM-001

Find out more: https://bit.ly/2yjmvIa

Before: 8.5g -iron

After: 4.4g – titanium

Around 40% decreased

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Xpress Titanium Lock Nut 4mm

For 1/10 Car 4 pcs #XP-20017

Find out more: https://bit.ly/2PzHRHR

Before: 4.6g- iron

After: 2.7g – Titanium

Around 40% decreased

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Overall

Before: 1119g

After: 1047.5g (Lightweight version)

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Further Review

This essay is stage 1 of XM1S modification. In the next episode, I will try to decrease the weight what under 1000g by focusing on electronic parts and the motor. See you at stage 2.

Specification

Battery: ORCA HV Li-Po (Shorty Pack) https://bit.ly/2pSJR2C

Transmission system: YR Hacktronic 120A / MOBSTER 13.5T https://bit.ly/2QTJAIp

Cooling system: YR Signal 10 40mm https://bit.ly/2ynAeO6

Servo: Power HD Storm-7 https://bit.ly/2PAFqF5

Radio: Sanwa MT44/RX-472 https://bit.ly/2ykRZ0F

Xpress Execute XM1S 1/10 4WD Mini Touring Car Kit #XP-90005

31231

The Execute XM1S brings forward performance and features similar to competition class touring cars but at a fraction of the price and a reduction in size. By changing most aluminum materials to injection molded plastic parts, the precision and tolerances were kept the same but now you can get a taste of the Xpress touring car line at a fraction of the cost. Different from other “entry” level priced touring car kits, the XM1S features all the features of the XQ1 with adjustable suspension and steering to better prepare newcomers to the on-road touring car scene for the different type of setup changes you can make. Fitted with oil-filled dampers and gear differential, the setup can be adjusted towards either backyard bashing or even getting into club racing!

Quick Features

  • Slotted shock tower ensures perfect alignment
  • Single piece Bulkheads slots into chassis for tweak free assembly
  • Easy to install suspension mounts
  • Oil-filled dampers and gear differential
  • Floating Servo Mount, for symmetrical chassis flex
  • Ball Raced Steering Rack
  • Full Sized 1/10 Touring Car Differentials and Spool
  • Easily Adjustable Geometry (Front Toe-in/out, Camber) through turnbuckles
  • Motor mount area flex adjustment with included stiffener post
  • Low friction belt driven 4wd system
  • Flex Cut Lower Chassis for maximum traction
  • Either floating or chassis mounted steering rack at your choice!
  • Aluminum Layshaft for instantaneous power delivery
  • Anti Roll Bars included allowing for predictable cornering
  • Universals allowing for smooth cornering
  • And more…

Xpress XM1S now available on rcMart!

Let’s get yours now https://bit.ly/2odM9sF

Find out more XM1S upgrade parts now on rcMart: https://bit.ly/2QLrS9Y

More Xpress Product on rcMart https://bit.ly/2nFg1O9

Previous Blog

Xpress | Execute XM1S Review – The First 4WD M-Chassis Kit in World: https://bit.ly/2IWzJ1C

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