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We support UAV motor customization based on your drone structure, power system and application requirements.
Every UAV platform has different requirements. We customize motor specifications, structure and branding based on your application needs.
KV rating, shaft diameter, mounting pattern, winding, cable length, connectors, color and logo can be customized to match your UAV platform.
From sample testing to batch production, we support OEM/ODM projects with engineering communication, test data and production follow-up.
Quality isn't inspected in at the end of the line — it's built in at every step. Here are three ways we ensure every motor that reaches your production line meets the standard we'd accept on our own airframes.
In commercial UAV operations, vague promises fail. Specific materials deliver. Here's exactly what goes into every LETU motor — and why it matters for your platform's reliability.
Which Series Is Right for Your Build?
Pro Series: Curved N52H Neodymium
Best for sustained heavy-lift, 8S-12S builds, and hot environments. N52H maintains full flux density up to 120°C. Maximum thermal headroom when failure isn't an option.
MAX Series: Curved N48H Neodymium
Best for 4-6S professional platforms within standard thermal ranges. Outperforms the N40/N42 flat magnets common in budget motors. Same curved arc design as Pro — smooth torque, reliable stability.
Pro Series: Japanese NSK/EZO ABEC-5
Same brands as T-Motor and iFlight flagships. Measurably lower vibration floor. Consistency from unit one to unit one thousand. The choice when your payload is a cinema camera or LiDAR unit.
MAX Series: High-Precision ABEC-5
Same ABEC-5 standard, verified by individual dynamic balance testing at ≤8mg. Not generic — every supplier qualified against our precision and durability criteria. Delivers 90% of the performance at a meaningfully lower cost.
Same shaft across both series — sized by motor, not by tier.
3115 (both MAX and Pro): M5 High-Strength Alloy Steel — engineered for 8-10" propellers and platforms up to ~5kg
4214 (both MAX and Pro): M6 High-Strength Alloy Steel — deliberately oversized for 13-15" propellers and 7kg+ platforms
We don't downgrade the shaft. When failure at this component means total airframe loss, we use the spec physics demands — regardless of product tier.
Yes. MAX and Pro motors within the same size and KV share identical electrical characteristics, mounting patterns, and mechanical dimensions. Some integrators use Pro on critical payload axes and MAX on less demanding positions. Others standardize one series fleet-wide. Both approaches work — it depends on your application and budget.
Pro Series: 220℃ Pacific-Grade Copper
Same thermal class as industrial servo motors. Built for 6-12S, sustained high-current operation. Maintains dielectric strength beyond continuous rating. Designed for missions with no abort option.
MAX Series: 220℃ Class Copper
Same 220℃ temperature rating — a deliberate step above the 130-180℃ enamel in budget motors. Reliable thermal protection for standard heavy-load duty cycles. Exceeds the standards of its price class.
Pro Series: ≤5mg Residual Imbalance
Every Pro motor individually balanced and serialized. Traceable to bearing lot, magnet batch, and winding operator. The standard demanded by cinema and commercial payload integrators.
MAX Series: ≤8mg Residual Imbalance
Every MAX motor individually balanced — not batch-sampled. Tighter than most competitors publish at any price. Clean footage, smooth operation, professional reliability.
Choose Pro Series if:
Your platform carries expensive, vibration-sensitive payloads (cinema cameras, LiDAR). You operate sustained heavy-lift, high-voltage (8S+), or in hot environments. You need the lowest possible failure rate, per-unit traceability, and maximum thermal margin. The extra margin costs less than one ruined shoot.
Choose MAX Series if:
Your platform operates within 4-6S, standard thermal ranges, and professional payload requirements. You want a motor that punches well above its price class — better magnets, better copper, and better balancing than budget alternatives — at a price that keeps your BOM lean. You get 90% of Pro's performance where your application doesn't require the last 10% of margin.
Same warranty commitment. Different traceability depth.
Both MAX and Pro Series are covered by the same manufacturing defect warranty — if a motor fails due to our fault, we replace it at our cost and perform root cause analysis on the returned unit. No "void if flown" fine print. No hoops to jump through.
The difference is in investigation speed and precision. Pro Series motors carry unique serial numbers traceable to individual bearing lots, magnet batches, and winding operators. If an issue arises, we can isolate the affected units immediately — often without you needing to pull your entire fleet. MAX Series motors are traceable to production batch and week, which covers the vast majority of warranty scenarios but doesn't enable the same surgical precision as Pro-level serialization.
For most integrators, the MAX warranty is more than sufficient. For fleets where downtime costs thousands per hour, Pro-level traceability adds a layer of operational security worth the premium.
In a market where most motors look identical on the outside, the difference between a dependable supplier and a liability is what happens before the tape goes on the box.
This is where we diverge from most competitors at our price point. Standard industry practice is batch sampling — test 10 out of 100, and if they pass, ship the lot. We don't accept that math when one unbalanced motor in a cinelifter fleet means one ruined shot, one angry DP, and one integrator questioning their supplier choice.
Every single LETU motor goes on the dynamic balance machine. Not a sample. Not a statistical AQL acceptance. Every unit is spun up, measured, and corrected until residual imbalance falls below our published spec:
Pro Series: ≤5mg — the standard your cinema customers demand
MAX Series: ≤8mg — still tighter than most competitors publish at any price
If a motor can't pass, it doesn't ship. It gets reworked or scrapped. This costs us money and time. It costs you nothing compared to the alternative.
Six months after delivery, you get a report from field ops: three motors in a batch are showing elevated vibration. Without traceability, you're stuck. You don't know if it's a specific production run, a particular operator, a bearing lot issue, or abuse in the field. You're forced to pull the entire fleet or roll the dice.
With LETU Pro Series, you don't guess. Every motor carries a unique serial number. In our production database, that number links to:
Bearing manufacturer, lot number, and incoming inspection data
Magnet batch and flux density test results
Winding operator ID and QC gate pass/fail records
Dynamic balance measurement values
Final spin test data
MAX Series units are traceable to batch and production week. Pro Series units are traceable to the individual unit and component lot. If an issue arises, we isolate it fast — and we share our root cause analysis with you, not a canned response.
Dead-on-arrival and infant mortality failures are unacceptable in a B2B supply chain. They waste your integration time, delay your builds, and erode your confidence in a supplier. Our answer is simple: we run every motor before it leaves.
What the test covers:
Full voltage run-up with a reference propeller
Audible inspection for bearing noise, rubbing, or abnormal resonance
Throttle sweep to confirm smooth acceleration without cogging or stutter
Visual inspection of bell concentricity under load
Motors that exhibit any anomaly are flagged, analyzed, and either corrected or scrapped. They don't get a second chance to become your problem. This is standard procedure on our production line, not a special request.
Our standard MOQ depends on the scope of customization — things like cable length, connector type, and bell engraving have relatively low thresholds. Custom KV winding requires a slightly higher MOQ. Tell us your requirements and forecast, and we'll give you an honest number. We don't believe in "10,000 unit minimums" that only make sense for the largest players.
It depends on scope. Minor customizations (cable length, connectors, engraving) add minimal lead time. Custom KV winding or significant mechanical changes take longer — we'll quote a realistic timeline during consultation, based on actual production queue and material availability, not an optimistic guess.
Every order includes a Certificate of Conformance. New qualifications receive a First Article Inspection Report. Pro Series orders include batch test summaries with balance and spin test data. Need additional documentation for ISO audits or end-customer qualification? Ask — we've supported integrators through certification processes before.
We can discuss it. If you're looking for a drop-in replacement — same KV, mounting pattern, shaft spec, and performance curve — share the reference motor's datasheet and your target price point. We'll evaluate whether we can match or exceed it, and be honest if we can't.
Accordion Widget for Elementor allows you to present plenty of content in a foldable and concise way.
We're open to discussing it. If we co-develop a motor specification specifically for your platform, we can structure exclusivity terms that protect your investment. Let's talk about what you need and find a structure that works.
Manufacturing defects are replaced at our cost, including shipping. Beyond replacement, we perform root cause analysis on every returned unit and share the findings with you. If it's our fault, we implement corrective action. If it's a misapplication, we provide guidance to help your team avoid recurrence. No "void if flown" fine print.
Tell us as early as possible. If production hasn't started, we adjust. If it has, we'll work out what can be modified and what needs to proceed as-is. Clear communication upfront minimizes surprises, and we're flexible where manufacturing reality allows.
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Custom UAV motors and matched propulsion solutions for FPV, agricultural, industrial and VTOL drones.
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