Notices
Brushed/Brushless motors, speed controls, gear drives Discuss all aspects of brushless motors, brushed motors, speed controls (ESC's), gear drives and propellers in this forum.

Do you use securing collar with axi

Old 12-26-2008, 02:06 PM
  #1  
hobdean
Thread Starter
My Feedback: (11)
 
Join Date: Aug 2002
Location: Fort Worth, Texas
Posts: 233
Likes: 0
Received 0 Likes on 0 Posts
Default Do you use securing collar with axi

Just curious if anyone else does not use the securing collar with axi?
I have never used one and have never had a problem in the last 5 years. Ordered an axi 2814/16 and wonder if it's a good idea?
Old 12-26-2008, 09:16 PM
  #2  
Dr Kiwi
Senior Member
 
Join Date: Dec 2002
Location: Chattanooga, TN
Posts: 2,198
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Do you use securing collar with axi

If you use the radial mount it is as good idea - since all that holds your bell/shaft in is a circlip. Obviously if you have the motor mounted conventionally behind a firewall the shaft and bell can't go anywhere!
Old 12-26-2008, 11:16 PM
  #3  
hobdean
Thread Starter
My Feedback: (11)
 
Join Date: Aug 2002
Location: Fort Worth, Texas
Posts: 233
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Do you use securing collar with axi

I plan on mounting the motor backward and in front of the fire wall. Yes, the collar is a good idea. I also am planning on using E propellers instead of the SF propellers. AXI 2814/16 rpms over stresses the SF propellers. I never had a problem with SF propellers before. My 3 year old is with me when I fly.
Old 12-27-2008, 10:06 AM
  #4  
Dr Kiwi
Senior Member
 
Join Date: Dec 2002
Location: Chattanooga, TN
Posts: 2,198
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Do you use securing collar with axi

With a 65,000rpm/diam limit the SF props are a no-no with that motor even on 2s.
Old 12-28-2008, 02:17 PM
  #5  
hobdean
Thread Starter
My Feedback: (11)
 
Join Date: Aug 2002
Location: Fort Worth, Texas
Posts: 233
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Do you use securing collar with axi

What about an axi 2212/20? SF or E prop?
Old 12-28-2008, 08:02 PM
  #6  
Dr Kiwi
Senior Member
 
Join Date: Dec 2002
Location: Chattanooga, TN
Posts: 2,198
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Do you use securing collar with axi

ORIGINAL: hobdean

What about an axi 2212/20? SF or E prop?

1150Kv on 3s with the recommended 10x5 prop. Kv x V (@10.5v) = 12075rpm... with that prop on expect perhaps 70% of Kv x V = 12075 x 0.70 = 8450rpm

RPM limit for 10x4.7 APC SF = 6500rpm..... 8450rpm is obviously over the top!

RPM limit for 10x5 APC E = 19,000rpm...... 8450rpm is easily within the "safe" range!
Old 12-28-2008, 08:42 PM
  #7  
hobdean
Thread Starter
My Feedback: (11)
 
Join Date: Aug 2002
Location: Fort Worth, Texas
Posts: 233
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Do you use securing collar with axi

Thanks
Measured rpms today. Measured 7200 max but 6800 rpms was average after the first burst. No telling what the rpms are once the prop unloads. First time to measure electric rpms and just think I have always had a meter for my gas planes. Put a led flashlight shining back at the plane to nullify the indoor lighting.
It was a SF prop. Guess it's time to switch to an E prop. SF prop was 10x4.7 and from what I have read, go up one in pitch to a 10x5.5 E would be the ticket.
Have been flying electrics for some time but, gas planes was my main concentration till now. Flew my CST Katana today across my street on a dead end street and 46 degrees outside !
Old 12-31-2008, 07:22 PM
  #8  
hobdean
Thread Starter
My Feedback: (11)
 
Join Date: Aug 2002
Location: Fort Worth, Texas
Posts: 233
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Do you use securing collar with axi

What would be the best electric motor for a 60ounce plane to fly 3d?
Want to fly on a 3cell li-po 2150 25 battery due to weight restrictions. My choice is an axi 2826/12 due to I favor axi, but it really needs a 4 cell then weight is added. You seem to be knowledgeable in electrics.
I have looked at some static thrust numbers but, static numbers are more confusing as the motors get larger.
Thanks for your help

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.