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HelicopterEngines Plugs Mufflers Fuel › engine overspeeding
05-24-2017 02:55 PM  5 months agoPost 1
mccoy

rrNovice

parlin,N.J. USA

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I have a o.s. 50 hyper in a raptor 50 v2. It seems like every time I go past 75% thro. It overspeeds I can't get 100% throttle at the top end only about 75%. I have 9 degrees at the top. Any help out there.

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05-24-2017 11:01 PM  5 months agoPost 2
JuanRodriguez

rrProfessor

The Villages, Florida

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You may want to load the disk a little more than 9 degrees..... try 12

Also , can you post both throttle and pitch curves ?

Been there, done that and old enough to know better.....

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05-25-2017 01:28 PM  5 months agoPost 3
KevinB

rrKey Veteran

Saskatoon, Saskatchewan, Canada

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+1

Also make sure you aren't running the engine too lean.

KevinB

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05-25-2017 03:59 PM  5 months agoPost 4
Four Stroker

rrElite Veteran

Atlanta

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What Juan said ! Is your clutch slipping ? But usually this is just a throttle vs. pitch curve problem.

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06-01-2017 02:32 PM  4 months agoPost 5
Richardmid1

rrProfessor

Leeds, England

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I think max pitch is +/-10.5 on a Raptor.

What do you mean you can't get 100% throttle?

You may need to adjust your throttle curves or you have a worn out clutch.

60% of the time, it works every time!

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