RENNTECH AIXRO XR50 Operator's Manual
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RENNTECH AIXRO XR50 Operator's Manual

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Summary of Contents for RENNTECH AIXRO XR50

  • Page 1 RENNTECH / AIXRO XR50 ENGINE OPERATOR MANUAL...

  • Page 2: Table Of Contents

    4.3 test run 4.4 after the test run OPERATION 5.1 warm-up and break-in 5.2 driving 5.3 switching off MAINTENANCE AND WARRANTY 6.1 wear and tear items 6.2 issue of warranty 6.3 warranty procedures RENNTECH / AIXRO XR50 ENGINE OPERATOR MANUAL...

  • Page 3: Introduction

    INTRODUCTION PREFACE RENNtech would like to thank you for your purchase of a new Aixro XR50 rotary powersports engine. By doing so, you have helped set new standards for performance and environmental responsibility. Before you get started, it is imperative that you read and understand the instructions and procedures outlined in this operator manual.

  • Page 4: Product Description

    These include vibration-free running (due to evenly balanced rotating masses), very compact construction, outstanding power-to-weight ratios, outstanding low-rpm torque, and very low emissions. The primary components of the Aixro XR50 include: water-cooled casing (called a trochoid, due to the shape of its interior outline) •...

  • Page 5: Area Of Application

    13. exhaust manifold (aka “header”) 14. exhaust pipe (aka “silencer”, or ”muffler”) 15. water supply 16. kill switch 17. encasement 18. engine mount 19. engine support 20. bell housing RENNTECH / AIXRO XR50 ENGINE OPERATOR MANUAL...

  • Page 6: Assembly Procedures

    ENGINE ASSEMBLY Assemble the engine mount (torque to 26 Nm). Remove the clutch cover. !TIP: place the engine on the chassis and align the chain / sprockets. ATTN: DO NOT DISABLE VACUUM SOLENOID RENNTECH / AIXRO XR50 ENGINE OPERATOR MANUAL...
  • Page 7 RENNTECH / AIXRO XR50 ENGINE OPERATOR MANUAL...

  • Page 8: Chain Tensioning

    !TIP: over-tightening the chain will damage the clutch and bearings. !TIP: do not use a chain lock or master link - the chain must be riveted. RENNtech recommends Regina O-ring chain (available from RENNtech for 89.00USD). Clean and lube chains regularly, using O-ring safe cleaners (such as WD40).

  • Page 9: Electrical Connections

    ATTN: EXHAUST PIPE MUST BE ASSEMBLED WITHOUT STRESS LOADS ATTN: THE EXHAUST RUNS VERY HOT, AND TYPICALLY GLOWS RED - BURN HAZARD !TIP: use 2 support brackets (due to added weight of exhaust system). RENNTECH / AIXRO XR50 ENGINE OPERATOR MANUAL...

  • Page 10: Starter

    (with a 22 mm socket) or started with an optional on-board starter. 3.8.1 OPTIONAL ON-BOARD STARTER RENNtech’s optional on-board starter is intended for use in short start intervals. Under normal conditions, the motor should crank and start almost immediately. 3.8.4 ELECTRICAL CONNECTION The optional starter motor is a 12V system, controlled via relay.

  • Page 11: Initial Operation

    ATTN: MOST TACHS ARE TOO SLOW TO READ EXACT RPM, AND (UNDER LOAD) CAN BE 200 TO 300 RPM “BEHIND” ENGINE. ON A STAND (FREE-REVVING) A TACHOMETER CAN OFTEN BE 3000 TO 4000 RPM BEHIND RENNTECH / AIXRO XR50 ENGINE OPERATOR MANUAL...

  • Page 12: Test Run

    Once the XR50 cools down (could take several minutes) check to ensure that all bolts are still securely fastened (engine mounts, etc.) and check coolant levels (coolant check will not be accurate if engine is still hot). Once all checks are “passed”, the Aixro XR50 is ready for operation. RENNTECH / AIXRO XR50 ENGINE OPERATOR MANUAL...

  • Page 13: Operation

    ATTN: DO NOT MAKE ADJUSTMENTS TO ENGINE WHILE IT IS ON STAND OR WITHOUT LOAD DRIVING Most drivers need some time to adjust to the performance of the Aixro XR50, and may need to adjust their driving styles !TIP: build speed slowly, and avoid driving faster than you’re really able to.

  • Page 14: Maintenance And Warranty

    In the event that a warranty claim is issued, the complete engine must be made available to Aixro GmbH and/or RENNtech INC. After checking the engine and determining that the cause of failure falls within the scope of warranty, damaged parts will be repaired or replaced free of charge.

  • Page 15: Data

    WEIGHT approx. 30 lbs CHAMBER VOLUME 294 cc MAX RPM (recommended) 10500 rpm CLUTCH 2-disc centrifugal dry clutch with RENNtech press. plate DRIVE 0.5” 428 o ring chain IGNITION magnetic ignition with variable timing CASING water-cooled, Nicasil-coated rotor housing END PLATES...

  • Page 16: Ignition And Spark

    STARTER RENNtech’s on-board starter option for the Aixro XR50 uses 12v, 9 amp-hour sealed lead-acid powersports batteries, or a Coleman external starter (similar to other TaG kart batteries). FUEL PUMP Std.

  • Page 17: Tips And Tricks

    JETTING a change of 1 jet (ex.: 166 - 168) usually makes a difference CHAIN loose, approx. 10 mm of play !TIP: RENNtech recommends Regina 428 O-ring chain TIRES 10 - 12 psi MAX RPM 10500 rpm (engine can be over-revved, so watch rpm closely)
  • Page 18 RENNTECH / AIXRO XR50 ENGINE OPERATOR MANUAL...

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