Notices
O.S. Engines Support Ask Bill Baxter your questions about O.S. Engines.

Engine Spec

Old 10-18-2002, 08:20 AM
  #1  
Junior Member
Thread Starter
 
Join Date: Jul 2002
Location: santa clara, CA
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Default Engine Spec

I need help on the engine spec. While I look at the OS engine manual, one of the spec says "2.9bhp/15000rpm." How do I have to use that information? Does it mean that I have to rev my engine at 15000rpm to get a best performance or it means something else? Also, one of my heli buddy keep telling me that you have to put your engine on a powerband. But if there exist a powerband for a engine, then how do I get that information? The OS engine manual never mentioned power band.

Kev
Old 10-18-2002, 03:33 PM
  #2  
Bax
My Feedback: (11)
 
Join Date: Apr 2002
Location: Monticello, IL
Posts: 19,483
Likes: 0
Received 6 Likes on 5 Posts
Default Engine Spec

Kev,

The number given by O.S. is the peak horsepower, which happens at that RPM number. It's a calculated number, based upon testing by the factory. Depending upon the engine, though, you'll never run it anywhere near the horsepower peak. Use the propellers suggested in the instructions, and you'll be fine.

Since you didn't mention which engine you're asking about, we can't give you any recommendations for propeller and operating RPM.
Old 10-18-2002, 04:32 PM
  #3  
Junior Member
Thread Starter
 
Join Date: Jul 2002
Location: santa clara, CA
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Default Engine Spec

Well, I'm running an OS91SX-H, and 8.4 gear ratio. I was trying to find an right RPM for my gear ratio. I want the main rotor head speed to be around 1700rpm. Thanks.

Kev

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On


Thread Tools
Search this Thread

Contact Us - Manage Preferences Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.