RCU Forums - View Single Post - Danger Warning
View Single Post
Old 03-11-2008, 09:34 PM
  #2  
carrellh
Senior Member
 
carrellh's Avatar
 
Join Date: Mar 2003
Location: Garland, TX
Posts: 6,544
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Danger Warning

APC's recommended RPM limits are 190000 / diameter = limit
Here are the figures for 9 through 24 inch diameters
9 = 21111
10 = 19000
11 = 17273
12 = 15833
13 = 14615
14 = 13571
15 = 12667
16 = 11875 ** I'm pretty sure you did not overspeed the prop
17 = 11176
18 = 10556
19 = 10000
20 = 9500
21 = 9048
22 = 8636
23 = 8261
24 = 7917

I think your prop failure was just one of those "stuff happens" moments. Occasional reminders of what actually does happen are probably good to help us stay aware of the risks associated with our hobby. We don't need to be afraid of our stuff but we do need to stay aware of the fact that it can hurt us.