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Advantage Hobby . Revolution Models . CarbonXtreme

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Avant Aurora - EFX - FX > Avant Headspeed with YS91
 
 
Taipan
Key Veteran
Location: Sydney, Australia

What rpm are you guys running with 8.45 gear ratio? 1750rpm seems to be the norm. Isn't that a bit low? As seeing most OS users run 1850-1900rpm with 7.92 ratio.

Do both run +-11degs or what? What about using 8.08 ratio?

How is it that two engines with the exact same bore & stroke have different powerbands, torque & rpm??

FYI I'm running 1850/7.92 C-Spec PS +-11degs in my X-Spec.

Sorry 'bout the pile o' questions, just wanna know the best set-up.

Cheers!
05-15-2005 Over year old.
 
 
TJK
Heliman
Location: Waunakee, Wisconsin USA

YS 91 8:45 gear ratio 1830- 1850 rpm +11 -11 degrees pitch in my Avant works very well.

Team Quick UK, Team Wildcat
05-15-2005 Over year old.
 
 
Taipan
Key Veteran
Location: Sydney, Australia

Sweet! Ta bud. What governor you using? Got a RevMax. Currently have GV-1 in X-Spec.
05-15-2005 Over year old.
 
 
mrNoodles
rrProfessor
Location: Borlänge, Sweden

YS91 on 8.45 works great on 1750rpm (1750-1800rpm).
05-15-2005 Over year old.
HOMEPAGE  
 
 
traderdave2
Veteran
Location: Covington, GA

Probably something to do with porting.
05-16-2005 Over year old.
 
 
Taipan
Key Veteran
Location: Sydney, Australia

Cheers guys! Can't wait to get it. It's been 6 weeks since I ordered it.
05-17-2005 Over year old.
 
 
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Midland Helicopters . HeliProz . ZoomsHobbies

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Avant Aurora - EFX - FX > Avant Headspeed with YS91
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