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Ron’s HeliProz South . MTA Hobbies . Model Rectifier Corp

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Blitz Helicopters Avro 90 > OS 91 HZ PS Gearing
 
 
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Heliman
Location: Midwest

My Posts This: Topic  Forum		From What I have read 8.0 for Stable and 8.2 for 3D. Will run Byron 30% with .012 shims and the Hatori SB20. Radix 690 and 710 main blades with 105 tail. Mainly interested in Stable set-up flight style. Am I correct in using the 42T pulley putting me at 8.04:1 Ratio?
11-30-2008 06:30 PM
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fr8brkr
Veteran
Location: Asheville,NC

My Posts This: Topic  Forum		I have a YS91SR at the 8.04:1 ratio using the engine mounting shims supplied with the kit and using the 42 tooth pulley. I believe that the OS engine uses no shims and the 43 tooth pulley to achieve the 8.2:1 ratio. It may be best however to drop an e-mail to Blitz to make certain on what has been tried and proven for the OS91 HZPS power band.

Problems ? -- Mine are flown in fresh daily
12-01-2008 05:10 PM
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ReadyHeli . Power Helis . CANOMOD

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Blitz Helicopters Avro 90 > OS 91 HZ PS Gearing
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