How to Get a Matched Propulsion Quote in One Business Day
Four inputs, one message, one business day: how to brief a propulsion request so the reply carries a matched motor, ESC and propeller set.
TL;DR
- A drone motor quote lead time is set by the brief, not the inbox. Quantity, payload or AUW, target thrust or prop diameter, and pack voltage are the four inputs behind a matched shortlist in one business day.
- Two inputs price one part. All four let an engineer match a motor, an ESC and a propeller to the same operating point.
- Five missing items — quantity split, prop size, cell count, ship window, marking — cause most of the round trips.
Four inputs turn a request into a matched set instead of a price for one part. Below: what to send, what buyers leave out, one complete brief, the reply timeline and the OEM track.
A matched set is one operating point, not three prices: a heavy-lift motor, its propeller and the ESC that carries the current, shown as the AM110 kit ships.
Matched Propulsion Quote: What Buyers Should Send
What does “matched” add to a propulsion quote?
A matched quote names a motor, an ESC and a propeller selected against one operating point, then prices them as a set. Three separate prices do not do that.
The operating point is the load the propeller puts on the motor at hover, and the current it pulls through the ESC at pack voltage. Change one input and the other two follow:
- A larger propeller raises thrust and current at the same RPM, so ESC rating and thermal margin shift.
- A higher cell count raises RPM per volt, so KV drops or the propeller shrinks.
- A heavier aircraft raises thrust per arm, which usually asks for a larger propeller before a larger motor.
KV ties them together: a motor that hits the target only at full throttle runs hot and has nothing left for gusts. Motors, ESCs, propellers and power system kits are priced on different curves, so a set is not the sum of three catalog prices.
The four inputs every propulsion quote needs
Four inputs decide which shortlist you get. Send them together and the reply names part numbers.
Send numbers, not adjectives: “heavy-lift” does not narrow 633 SKUs, but 30 kg payload, 12S and a 30-inch propeller do. A 30 kg hexacopter and a 90 kg platform on 24S are different motor families, not one curve.
Two inputs price a part; all four are what let an engineer match a set.
Payload moves everything else: with a camera and gimbal on the airframe, AUW and thrust per arm are fixed before any brand is discussed.
Why does a drone motor quote lead time stretch from one day to two weeks?
Because the elapsed time is mostly waiting: every missing input costs a round trip, and a round trip costs a day once time zones and re-checks count.
Briefs with all four inputs and a ship window usually get a usable shortlist in the first reply; “best price for heavy-lift motors” needs two exchanges before the shortlist is worth reading.
What does a complete brief look like?
A complete brief for a 30 kg-payload hexacopter on 12S fits in one message.
- Quantity: 2 units for evaluation, 40 for production, forecast 120 over 12 months.
- Payload and AUW: 30 kg payload, 68 kg all-up weight, six arms, 1,600 mm frame.
- Thrust: 2:1 thrust-to-weight, about 22 kg per arm at full throttle and 11 kg at hover; the frame takes a 30-inch folder.
- Voltage: 12S, 30 Ah, AS150 connectors, one XT90 pack for bench testing.
- Ship window and marking: samples inside 30 days, neutral carton, private label decided after the flight test.
What comes back inside one business day
- Two or three matched sets, each naming motor, ESC and propeller as one SKU.
- The operating point: thrust at hover and full throttle, current per arm, hover throttle position.
- MOQ for the tier, ship window, incoterm, and ISO 9001, RoHS and REACH documents on request.
Two or three sets, not twelve: a long shortlist moves the engineering work back to the buyer, who compares KV bands without knowing which combinations were checked.
Some requests resolve to a set that already ships assembled. The AM110 heavy-lift power system kit is one SKU holding motor, ESC and a 73×29 propeller, with a PT1000 sensor version and an encoder version.
How long does each step actually take?
The reply has a one-business-day clock. The shipment does not, and treating them as one number is the second most common misunderstanding.
- Brief received. Form, email or chat lands in one thread with the drawings attached.
- Intake check. We test the brief against the four inputs and ask once for what is missing.
- Engineering match. Thrust per arm, KV band, ESC current and prop clearance are checked against bench data.
- Shortlist and terms. Two or three sets go out with MOQ, ship window and payment route.
Step 3 takes most of the day: the check has to hold at the hover throttle the mission uses and at pack voltage at the end of a flight, not at full charge.
The quote clock and the ship clock are separate: artwork sign-off and freight move the ship date, not the reply date.
When should you move from a catalog quote to OEM or private label?
Move when the change touches something the SKU does not already have: winding or KV, cable, connector, laser mark, label language, carton or packaging bill of materials. Matching alone does not need the OEM track.
The quote still returns inside a business day, because the engineering review is the same. What changes is the ship date: sample approval, artwork sign-off and deposit, in that order. Send the launch date, not just the unit count.
Certification questions belong in the same message. The answer is a document pack, not a claim: ISO 9001 for the quality system, RoHS and REACH alignment for the materials. The ISO 9001 standard defines what that system covers.
What should be in the first reply besides the unit price?
A quote is usable only if it carries the terms that decide the total. Check for five things:
- MOQ logic — what drives it: SKU, marking method and packing.
- Incoterm — EXW, FOB, CIF or DDP, and which one the price uses. The ICC Incoterms 2020 rules define where cost and risk change hands, so an unlabelled price cannot be compared.
- Payment route — card or PayPal on catalog orders, T/T on quoted projects.
- Garantía — 12 months standard, claims tied to the PO and the lot.
- Documents — datasheets for the exact parts, plus ISO 9001, RoHS and REACH.
For a set versus separate parts, power system kit versus separate parts shows where the extra cost goes. If the cart is the blocker rather than the quote, request quote versus checkout covers which order belongs on which path.
Frequently Asked Questions
How fast can I get a matched propulsion quote?
One business day from the moment a brief with all four inputs arrives. Quantity, payload or AUW, thrust or prop diameter, and pack voltage are what make a shortlist possible inside that window.
Do I need to know the exact motor model before asking?
No. The four inputs are enough. Engineers work from the requirement to the catalog, which sometimes shows a smaller motor with a larger propeller meeting the target at lower cost.
What is the minimum order for a quote?
There is no fixed floor, and samples start at one piece. MOQ on production depends on the SKU, the marking method and the packing, so it is quoted per project.
Does a private-label order still quote in one day?
The quote does, because the engineering review is identical. The ship date does not: it waits on sample approval, artwork sign-off and deposit. Send the launch date with the brief.
What does a matched quote include besides the unit price?
MOQ and what drives it, the incoterm, the payment route, the warranty term and claim basis, and documents for the exact parts quoted.
Send four numbers, not a catalog request
A matched propulsion quote is a short document: two or three sets, one operating point each, and the terms that decide the total. One business day is mostly a matter of sending all four inputs in one message.
Before you write, gather payload, AUW, prop size, cell count, connector, quantities and ship window; if the platform is still in design, send targets. The technical download pack holds datasheets, CAD and STEP files and a matching checklist built on the same four inputs.
Ready to brief a set? Send quantity, payload, thrust and voltage and we reply with a matched shortlist inside one business day.
By REACHSKY Engineering Team. We build and supply UAV propulsion — motors, ESCs, propellers, batteries and matched power system kits — from Changsha, Hunan, with an ISO 9001 quality system and RoHS and REACH alignment for the materials we ship.
Last updated: 2026-10-25
Ask for the drone parts lead time in the same reply, so the quote is usable.
All products are supplied for civil end use only.
Related UAV resources: power system kits, UAV propulsion products, and contact REACHSKY.
Matched propulsion quote checklist
Send the aircraft quantity, payload, target thrust, propeller size and battery voltage so the matched propulsion quote can be reviewed against one operating point.
Related internal pages: UAV propulsion products · request a quote · technical downloads.
More reading: how to read propeller size y heavy-lift motor selection.
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