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HomeAircraftHelicopterEngines Plugs Mufflers Fuel › OS91 HZ Non Pumped Newbie questions
10-21-2009 10:13 PM  8 years agoPost 1
AlexFong

rrApprentice

Barinas - Venezuela

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Hello Guys,
I'm switching from YS to OS and just got it in today. Wanted to know if I should or should not use the Shim? I will use Coolpower 30%.

thanks in advance
Alex

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10-21-2009 10:20 PM  8 years agoPost 2
bkervaski

rrElite Veteran

Birmingham, AL, USA

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There are tons of threads on this but the book makes specific recommendations on shimming.

I run the optional shim (.2mm) and 30% PowerMaster with great results.

Some say the stock shimming works fine.

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10-23-2009 12:48 PM  8 years agoPost 3
se 450

rrNovice

hucknall,nottingham, uk

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mines been fine on stock with 30% optifuel ! just the dam bearing that fu#ks me off lol

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10-23-2009 12:52 PM  8 years agoPost 4
gorn

rrElite Veteran

Western Australia

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remove the stock shim and run the optional one included in the box.

For the love of the hobby

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10-23-2009 03:46 PM  8 years agoPost 5
se 450

rrNovice

hucknall,nottingham, uk

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sorry i got it wrong didn't read the question silly me ! i was referring to a os 50 hyper so don't listen to me !

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10-24-2009 02:21 AM  8 years agoPost 6
Heli Davey

rrApprentice

springfield,mass

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Running it stock with 30% cool power no issues!!!

*TREX 500ESP*TREX 600NSP*TREX 700N LE*

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