Wren Turbines 75 Manual Download | Manualshive

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New

High Performance

Miniature Gas Turbine Engine

7.5kg – 16.5lbs thrust

Perfect small size, high performance

gas turbine engine for beginners and

expert alike.

Integral FOD screen and high quality

components throughout for long life.

Specifications:

Thrust 75N – 16.5Lbs

Weight – 1030g – 2lb 2oz

Size – 90mm dia x 240mm long (inc

starter)

3-1/2” x 9-1/2” long.

A real quart in a pint pot!!

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Summary of Contents for 75

Page 1: ...fect small size high performance gas turbine engine for beginners and expert alike Integral FOD screen and high quality components throughout for long life Specifications Thrust 75N 16 5Lbs Weight 1030g 2lb 2oz Size 90mm dia x 240mm long inc starter 3 1 2 x 9 1 2 long A real quart in a pint pot ...

Page 2: ...components in the Wren 75 are specially produced for this engine and are not interchangeable with any of the family of Wren54 derivatives The ancillaries are however common to the Wren54 and SuperSport engine and readily available from Wren so you can be sure of regular and reliable spares backup and Wren Turbines legendary service support you will always get a real person on the phone at Wren Wit...

Page 3: ...engine please pass these instructions to the new owner This engine must only be run firmly attached to a secure and sturdy engine test stand or model installation The thrust is considerable for such a small size and mountings must be sufficient to withstand such forces Use appropriate screws and lock nuts The engine must not be run held in the hand or clamped in a vice This engine is an internal c...

Page 4: ...ight be used for gasoline and diesel engines A dangerous fire and flashback may result Specifications Max thrust 7 5kg 16 5lbs nominal 160 000rpm Idle speed 45 000rpm Pressure Ratio 3 1 Fuel consumption 260ml min full power 15 C Weight engine only 1030gms Weight ancillaries ex ECU battery 260gms Setting Up A 2 cell LiPo battery pack is supplied with the engine Charge the pack prior to use A larger...

Page 5: ...on the valve base showing the direction of flow The fuel pressure output line of the fuel pump is connected to the fuel solenoid valve with a clear 3mm pipe The fuel solenoid valve should be installed in the fuel pressure line after the pump never on the suction side The output of the fuel solenoid feeds the clear line to the engine A fuel shut off tap is not essential as the solenoid valve provid...

Page 6: ...lves are closed when not powered If using external plug in gas the gas solenoid valve and regulator may be omitted and a useful weight saving made Setting the ECU to your radio The ECU battery needs to be connected in order to carry out this procedure Disconnect the lead to the starter and glowplug until the set up is complete and you are familiar with the system to prevent a possible attempt at s...

Page 7: ...er place the throttle stick and trim to maximum and press the button to set the value into the ECU The screen will now change to Move the throttle trim or switch the engine cut switch to on and throttle stick back to zero and again press the button The display will now change to Leaving the throttle stick in the minimum position raise the throttle trim to the max position or switch Engine Cut swit...

Page 8: ...r Off This could make it more difficult to troubleshoot a in flight shutdown This system allows the engine to fly through minor interuptions of signal or glitches thus avoiding the engine shutting off unnecessarily while maintaining the safety of automatic shutdown in cases of loss or corruption of radio link IMPORTANT ALWAYS PROGRAMME THE FAILSAFE TO SHUT OFF THE ENGINE NEVER FLY A TURBINE AIRCRA...

Page 9: ... sure to keep the flow control open to only the minimum Never attempt to use this system without a flow control valve fitted If the tank needs the gas emptying for any reason connect the gas cannister to the tank using the quick connector Invert the tank so the outlet is downwards open the cannister valve and the liquid propane should flow to the cannister When the flow ceases turn off the cannist...

Page 10: ...e throttle stick to switch the start on and off until the engine has cooled If the engine had reached idle then simply set the stick and trim to off and the engine will stop and go into cooldown on its own Throttle response Once the engine is at idle and the display shows running you can operate the throttle stick Over a period of about five seconds smoothly raise the throttle to full and the rpm ...

Page 11: ...lications of the change if you want to experiment The settings used as defaults for this installation are reproduced here so you can get back to where you starter from if you need to Note the settings listed may differ slightly from those preset in your ECU as your system has been optimised during testing ECU basic settings in Main Menu ECU battery 2 cells LiPo 1500 2000mAh a larger capacity pack ...

Page 12: ...nd the fuel solenoid open and you should see fuel moving up the pipe to the engine Watch the fuel travelling up the line and press the button as soon as it reaches the engine Beware as the pump speeds up the longer the pump is left running and can easily flood the engine watch it carefully Do not continue the prime beyond this point as the engine will be flooded with excess fuel which can cause a ...

Page 13: ...orrect mounting of the engine with correct inlet and exhaust ducting ii use of the correct battery packs iii use of the supplied fuel pump iv use and correct operation of the supplied ECU 4 Only the recommended fuel is used 5 Excludes parts damaged by excessive heat due to incorrect operation starting running cooling etc 6 Excludes parts damaged by ingestion of foreign objects ie wires model mater...

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