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.

AXI 4120-18 Real World RPMS

Old 03-30-2004, 09:05 PM
  #1  
rthorne
Senior Member
Thread Starter
My Feedback: (29)
 
Join Date: Jan 2002
Location: Amarillo, TX
Posts: 331
Likes: 0
Received 0 Likes on 0 Posts
Default AXI 4120-18 Real World RPMS

What kind of rpms are other users of this motor getting? I'd like to know the prop your using and battery(s). I'm thinking about putting this motor on a Sledge 540 with a 5s2p Irate pack (2600mah per cell, 10c).
Old 03-31-2004, 10:58 AM
  #2  
Greg Covey
Senior Member
 
Greg Covey's Avatar
 
Join Date: May 2003
Location: Rochester, NY
Posts: 5,710
Likes: 0
Received 2 Likes on 2 Posts
Default RE: AXI 4120-18 Real World RPMS

Rich,

Here is my 4120 setup on my 10lb Monocoupe:

AXI 4120/14 SETUP
Power Supply: 14-cells
Current: 43 Amps
Prop: APC 13x8 e-prop
Gear Ratio: none
RPM: 8200
Battery: HR-SC2600mAh
Battery Type: NiMH
Old 03-31-2004, 11:26 AM
  #3  
Matt Kirsch
My Feedback: (21)
 
Matt Kirsch's Avatar
 
Join Date: Jul 2002
Location: Spencerport, NY
Posts: 7,350
Likes: 0
Received 0 Likes on 0 Posts
Default RE: AXI 4120-18 Real World RPMS

I've got a friend that's putting the 4120/18 on a Hangar 9 Funtana (did I spell Hangar right? sent out a memo to the club with it spelled "hanger" last night). He was trying to do RPM measurements... INDOORS, under flourescent lights. :|

He was running a 13x10 prop on 16 GP3300 cells. Said it nearly pulled the plane straight up out of his hand.
Old 03-31-2004, 09:07 PM
  #4  
rthorne
Senior Member
Thread Starter
My Feedback: (29)
 
Join Date: Jan 2002
Location: Amarillo, TX
Posts: 331
Likes: 0
Received 0 Likes on 0 Posts
Default RE: AXI 4120-18 Real World RPMS

Thanks Greg, thats what I wanted. I'm in the process of converting a Funtanna. A lot of the guys are using Hackers to get the job done but the motocalc numbers make me think this AXI motor should do just fine. I plan on running a 5s2p pack of Irate 2600 lithiums. It won't be a true 5s2p pack as I plan on breaking it up, say a 3s2p and a 2s2p so I can balance the plane easier.
Old 03-31-2004, 09:16 PM
  #5  
rthorne
Senior Member
Thread Starter
My Feedback: (29)
 
Join Date: Jan 2002
Location: Amarillo, TX
Posts: 331
Likes: 0
Received 0 Likes on 0 Posts
Default RE: AXI 4120-18 Real World RPMS

Matt:

Very encouraging as thats exactly what I'm doing. I have two Funtanas. I have one flying with a YS63 and its like a rocket ship. If this AXI motor will do 75% of what the YS is doing I'll be pretty happy.

I see you and Greg are both from NY. I was born in Rochester, my Dad was one of the founding members of RCCR back in the 60's.
Old 04-01-2004, 09:03 AM
  #6  
Matt Kirsch
My Feedback: (21)
 
Matt Kirsch's Avatar
 
Join Date: Jul 2002
Location: Spencerport, NY
Posts: 7,350
Likes: 0
Received 0 Likes on 0 Posts
Default RE: AXI 4120-18 Real World RPMS

That's my club. In fact, I'm president.
Old 04-01-2004, 02:05 PM
  #7  
rthorne
Senior Member
Thread Starter
My Feedback: (29)
 
Join Date: Jan 2002
Location: Amarillo, TX
Posts: 331
Likes: 0
Received 0 Likes on 0 Posts
Default RE: AXI 4120-18 Real World RPMS

Matt:

Very good. Please say hi to Don Steebe and Hal Ulrickson. My Dad knows Don and used to build radios and such way back when. Hal is my Uncle and is just learning to fly.

Let me know how your friends Funtana flys. I'm just waiting for Cheap Battery Packs or Tanic Packs to get in the 2.6amp Irate packs.

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.