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Merlin VT 80

Old 08-08-2012, 08:56 AM
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xxq111
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Default Merlin VT 80

Hello!
When I shut down the turbine there is no automatic cooling down sequence, I have to run the starter motor manually. Is this normal, or is it missing some parameter in the ECU?

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Sejenssen
Norway
Old 08-08-2012, 09:00 AM
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lov2flyrc
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Default RE: Merlin VT 80

Throttle Trim must be in full low position to engage the cooling cycle.
Old 08-08-2012, 09:04 AM
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xxq111
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Default RE: Merlin VT 80

Thanks for your quick reply.
Old 05-11-2013, 10:18 PM
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bladeskiller
 
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Default RE: Merlin VT 80

Hallo!
After a few bench tests of my new VT-80 and three flights on my boomerang sprint, i have to say that the turbine works flawlessly except one think during the automatic cooling down sequence.
Having throttle stick at low position and throttle cut switch to on (shutdown), the starter motor operates for about one second, then stops and after about two seconds it starts again, running continuously at low rpm untill temperature drops ,instead of running in short bursts of higher rpm ,as i have seen in many videos about this turbine.
Is it normal for this engine or is it something that has to be fixed?
Old 05-25-2013, 06:38 PM
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hotspot 01
 
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Default RE: Merlin VT 80

That's normal from what I have seen.
Old 05-25-2013, 06:57 PM
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Default RE: Merlin VT 80

The earlier software had intermittent cooling sequence. Later software revisions went to the continuous cooling as yours has to keep wear an tear down on the bendix/ oring.

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