Valach by Fiala VM 250 R5-4T WITH electric fuel pump included

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Valach by Fiala 250cc 5 cylinder gas radial 4stroke engine with electronic ignition

This is the deluxe 250 class radial, the complete motor is CNC milled.

COMES WITH the Aps FuelPump already included, a US$ 245 value!



This motor has been designed from the ground up for fuel pump usage, the Fiala/APS fuel pump is already included (US$250 value).

Enclosed valve train

Laser welded stainless steel exhaust ring which allows those of us who want to make custom exhaust solution (scale exhaust port location for our scale builds) much easier to achieve, soldering steel is easy.

Smart ignition - 4.5V to 9V, acoustic status feedback. The ignition will monitor your RPM at startup, you simply can not start the motor at full RPM by mistake.

The large motor mount allows for easy install using standoffs - or direct mount to your firewall.

Comes with replacement parts - 5 valve cover gaskets, 2 adjustment bolts, 1 cam follower)

Comes with tools

Comes with two metal Valach Logo plates

Original Walbro carburetor




Bore 42mm

Stroke 32mm

302mm diameter

193mm length

Weight 5.6kg


Recommended prop: Please see that you run Valach engines on Fiala props.

Fiala owns and makes Valach engines, the development of the engines goes hand in hand with the development of their propellers, these is truly the only make that has a custom prop in mind.

Props are not simply paddles that drive an engine forward, they are sophisticated designs with well thought-out airfoils.

In this case engine are propeller are matched.

Dr G's recommendation:



Scale: Fiala 34x18 Fiala Propellers - 2 Blade – Vogelsang Aeroscale

Speed: Fiala 32x20 Fiala Propellers - 2 Blade – Vogelsang Aeroscale 

Slow/Thrust: Fiala 34x16 Fiala Propellers - 2 Blade – Vogelsang Aeroscale



Scale: Fiala 32x18 Fiala Propellers - 3 Blade – Vogelsang Aeroscale

Speed: Fiala 30x20 Fiala Propellers - 3 Blade – Vogelsang Aeroscale


Make sure to research the recommended accessories at


Click for Dimensions


My Valach Ignition has a second JR cable:

It offers you a kills switch functionality. Is for ON / OFF switching your ignition.

Hook that up to your receiver, set up a negative/positive mix and you are set to go.






Very convenient to have as the Valach does not come with preinstalled throttle and choke horn: