Starter-generator
25 kW axial-flux ring between the core and the gearbox. Electric taxi, takeoff assist, and the alternator deleted entirely.
M120H
The M120 with a 25 kW axial-flux starter-generator integrated between core and reduction drive. Electric taxi, takeoff assist, and the alternator deleted outright. For motorglider and UAV OEMs building the next airframe, not the last one.
- Role
- Hybrid-ready variant
- Status
- OEM deliveries — conforming prototype flying
- Spec rev
- D
- Catalogue lines
- 39
DRY MASS 71.8 KGGEN OUTPUT 25 KWASSIST +33 HP / 90 STAXI ENGINE-OFF
Look closer
Captured from the same scene you can orbit above.
Twin-plug heads
Unchanged from the M120. The hybrid variant adds hardware; it does not fork the core.
Crankcase
Same casting, same through-bolts, with a machined inverter pad added on the upper deck for the three-phase conduit.
Specification and price
M120H type dataSPEC REV D
- Configuration
- Flat-four + axial-flux motor-generator
- Displacement
- 1,340 cc
- Max power (combined)
- 120 hp + 33 hp electric assist (90 s)
- Generator output
- 25 kW continuous @ 5,500 rpm
- Electric taxi
- Yes — engine-off, 8 kt on paved surface
- Reduction drive
- 2.43 : 1 helical, shared case
- Dry mass
- 71.8 kg (less battery)
- TBO
- 2,000 h core / 4,000 h MG inspection
- Fuel
- 91E10 mogas / UL91 / 100LL
- DC bus
- 540 V nominal, isolated HV harness
- Ignition & injection
- Dual-channel FADEC + MG inverter cross-link
- Propeller flange
- SAE-1
Price, firewall-forwardEX-WORKS FILTON
$31,900
Firewall-forward less battery, ex-works Filton
Combined power and torque, measured on the cellCELL DATA
Combined powerCombined torque
Installation
Firewall-forward, side elevation.
Installation drawingM120H-FWF
Envelope and mount
Overall envelope 664 × 782 × 542 mm. Dynafocal mount ring, SAE-1 flange, standard cowl lines published as DXF in the installation manual. Every hose, clamp and adapter in the firewall-forward kit is a catalog line item.
Full installation drawings, mount loads and CG tables are in the Installation Manual (Rev E) — free, like all our documentation.
Get the manuals
Parts for the M120H
Full parts book| Part no. | Description | Group | Price |
|---|---|---|---|
| MA-000-1101 | Crankshaft, forged EN40B, nitrided | Core | $1,840 |
| MA-000-1103 | Connecting rod, forged, matched pair | Core | $386 |
| MA-000-1106 | Piston, forged 2618 alloy, with rings & pin | Core | $214 |
| MA-000-1110 | Main bearing set, trimetal, std | Core | $172 |
| MA-000-1114 | Crankcase half, sand-cast A356-T6, left | Core | $940 |
| MA-000-1115 | Crankcase half, sand-cast A356-T6, right | Core | $940 |
| MA-000-1121 | Camshaft, billet, with followers | Core | $610 |
| MA-000-2102 | Cylinder barrel, air-cooled, plateau-honed | Cylinder & Head | $452 |
39 catalog lines fit the M120H. All priced, all orderable.