Aixro XR50 Rotary Engine - Woelfle Engineering GmbH - rotary engine development and worldwide distribution

Karting Redefined

The Aixro XR50 rotary engine is still a revolution in karting. There has never been such a combination of performance, drivability and reliability in this sport before. Despite its power the XR50 is very controllable even in wet conditions, and it feels like a classic direct-drive kart. Press reviews describe it as "Absolutely Awesome" (Karting Magazine),"Pocket Rocket" or "Karting Nirvana" (karting1.co.uk).
Over the past years the XR50 has proved both its performance and reliability. But as good is never good enough, the engine is continually improved. For example the new 2011 engine version is equipped with a PVL ignition system for better spark quality and operation convenience, to ensure that it will remain the gauge for all other 2- and 4-stroke engines.

Tests and Reports

Torque Magazine 06/2010
Karting Magazine 09/2009
Japan Kart 03/2009
THE Karting1 test
More videos on YouTube
SLR Karting Le Castellet

aixro XH40 Wankel rotary engine - © aixro GmbH

Technical type power weight torque chamber volume max. rpm ignition clutch drive	Specifications 4-stroke single rotor rotary engine 33 kW at 8750 rpm ca. 17 kg 39 Nm at 7500 rpm 294 ccm 11000 rpm PVL Fire 650 2-disc dry centrifugal clutch ½in chain type 428
Included Features	Dual Inlet with vacuum control Float carburettor with air filter Clutch with 11T sprocket and cover 3-piece exhaust with manifold and springs Standard engine mounts (Ø32mm x 92mm) Ignition with start support 50W alternator
Options	Onboard starter External starter Ceramic apex seals Dell'Orto carburettor VHSH30W 10T-, 12T- and 13T-sprocket Chassis-specific engine mounts Metal clutch friction discs
Prices	Please contact a Dealer near you
Documentation	Performance diagram (.xls) Operation Manual version 2011 (.pdf) Betriebsanleitung Version 2011 (.pdf) Parts List / Stückliste (.pdf) Operation Manual version 2010 (.pdf) Betriebsanleitung Version 2010 (.pdf)