Keep the Wheels Rolling

The Product Temperature Question: When Physics Becomes a Liability Shield

Keep The Wheels Rolling!

Door Opening Recovery: The Hidden Capacity Requirement

Average thermal load: 2.3 kW. Peak load at each door opening: 5-6 kW. A system rated for the average cannot handle the peaks. After each stop, temperature recovers partially before the next opening. Across 15 stops, a system “working perfectly” drifts significantly below setpoint. Recovery capacity is the metric nobody discusses.

The Multi-Stop Thermal Load Reality

Long-haul transport: 2-4 door openings daily. Courier operations: 30-60. Same equipment gets sold for both applications. The thermal load difference? A factor of 10. The capacity requirement difference? 3.7×. The industry’s response? Sell you the cheaper option and blame your practices when it fails.

Why Every Racing Team Encloses Their Coolers (And Your TRU Should Too)

Why do billion-rand racing programmes enclose their radiators while transport refrigeration installers insist condensers need “open air”? We calculated what the industry won’t: capture efficiency, pressure differentials, and recirculation losses. The results explain why your TRU underperforms — and what physics demands instead.

The Aerodynamics Tax: R10,000 to R70,000 Your Customers Pay Every Year

A mini truck loses R10,000 annually to aerodynamic drag. A 16-ton rigid loses R35,000. An interlink loses R70,000. Same physics, same fixable problem zones, different zeros on the savings. This comprehensive guide breaks down the seven drag zones costing your fleet money, quantifies the annual waste, and shows bodybuilders how to turn aerodynamic improvements into a competitive advantage.

Who Pays for a Thawed Load?

You book an “insured courier” for your frozen goods. Three days later, it arrives thawed. You file a claim—and discover your product was explicitly excluded from coverage. Cold chain liability is complicated. Multiple carriers, multiple terms, multiple gaps. Here’s what you need to know before you ship.

Palletizing Frozen Goods for Long-Haul Transport: A Complete Guide

When your frozen goods travel between Johannesburg, Cape Town, and Durban, they move through a chain of handlers, forklifts, and vehicles before reaching their destination. How you palletize determines whether your products arrive intact—and whether you’re covered if something goes wrong.

Why Palletising Is Harder Than Tetris (And Tetris Is Mathematically Impossible)

Your warehouse staff call it “playing Tetris.” So do we. But in 2002, MIT proved Tetris is NP-hard – no computer can guarantee the optimal solution. Palletising is worse: 3D instead of 2D, mixed box sizes, weight limits, crush resistance, and the physics of surviving 1,200km on the N1. This article breaks down why a 30-box pallet has 10⁵⁵ possible configurations, why standard South African stock boxes don’t tile perfectly on Euro pallets, and why telling us what you’re sending before it arrives saves both of us money.

The Seven Cost Levers: Where to Spend Your Rands on a Refrigerated Vehicle Build

Every refrigerated vehicle build involves seven interconnected cost levers: insulation, TRU sizing, compressor type, condenser design, defrost systems, compressor lifecycle, and evaporator sizing. Get them wrong, and each bad decision cascades into the next—poor insulation forces larger TRUs, which run longer, which kill compressors faster. We break down how a “budget” build at R90,000 upfront becomes R947,500 over 10 years, while an engineered build at R170,000 costs just R575,000. That R80,000 you “saved”? It costs you R4.66 for every rand.

The Insulation Materials Guide: Why Your Refrigerated Vehicle Can’t Maintain -15°C (And What to Do About It)

Your refrigerated vehicle bodybuilder saved R8,000 on insulation. You’ll pay R150,000–R250,000 in excess fuel, compressor failures, and product losses over the vehicle’s life. The thermal calculations are not complex. The industry just prefers you don’t run them.

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