Discussion:
electric motor
(too old to reply)
Marvin & Sue
2004-05-02 19:56:32 UTC
Permalink
I am building my first electric powered model, and have a question about the
motor. It is an AXI motor and the drawing shows a lock collar on the rear
shaft [they furnish the lock collar], so it must be important. I really see
no reason for it unless it holds the shaft in the motor when the prop on the
other end is pulling, and this seems a rather stupid way to do this. What is
the purpose of this lock collar?
--
Marvin & Sue
Mike Norton
2004-05-02 22:25:24 UTC
Permalink
I am not sure what you are talking about, but I think you are looking at the
kit for mounting to a normally positioned firewall. The idea is as follows:
-> Mount the motor to the firewall using the normal mounting holes on
the bell. This leaves the normal propellor shaft pointing to the rear
(basically, into the tank compartment.) You may cut off this shaft, but Be
Careful NOT TO GET ANY SHAVINGS in the motor where the magnets will jam them
into the stationary part in the center.
-> The piece you have should mount to what used to be the rear of the
motor, and the prop mounts to it. When the outside of the motor spins, it
turns the prop.

There is no real difference in the motor's operation. In the normal case,
the shaft (which is attached to the outside of the motor at the rear) spins
the prop, and the motor is mounted to a front mount through which the shaft
passes.

Hope this helps,
-- Mike Norton
Post by Marvin & Sue
I am building my first electric powered model, and have a question about the
motor. It is an AXI motor and the drawing shows a lock collar on the rear
shaft [they furnish the lock collar], so it must be important. I really see
no reason for it unless it holds the shaft in the motor when the prop on the
other end is pulling, and this seems a rather stupid way to do this. What is
the purpose of this lock collar?
--
Marvin & Sue
Marvin & Sue
2004-05-02 23:02:23 UTC
Permalink
Post by Mike Norton
I am not sure what you are talking about,
snip<
Your reply indicates you did understand what I was talking about! I
purchased a radial mounting kit with this motor, and the mount and prop
adapter cannot be installed on the wrong end of the motor. The lock collar
[according to the drawing] goes on the shaft that extends through the radial
mount. The lock collar is not on the prop end of the motor. It appears to
serve no useful purpose [neither does that piece of shaft]. I'll call Hobby
Lobby Monday and ask them what purpose the collar serves.

Thanks,

Marvin & Sue
Philip Rawson
2004-05-02 23:22:14 UTC
Permalink
My understanding is that the locking collar is put on the shaft to stop the
motor pulling apart when it's mounted the way you intend. If you're AXI is
like mine, there's a tiny circlip that holds the motor together, I guess
they thought it wouldn't be man enough for the job on it's own...

--
Philip Rawson

www.flymodels.co.uk
Post by Marvin & Sue
Post by Mike Norton
I am not sure what you are talking about,
snip<
Your reply indicates you did understand what I was talking about! I
purchased a radial mounting kit with this motor, and the mount and prop
adapter cannot be installed on the wrong end of the motor. The lock collar
[according to the drawing] goes on the shaft that extends through the radial
mount. The lock collar is not on the prop end of the motor. It appears to
serve no useful purpose [neither does that piece of shaft]. I'll call Hobby
Lobby Monday and ask them what purpose the collar serves.
Thanks,
Marvin & Sue
Marvin & Sue
2004-05-02 23:49:01 UTC
Permalink
Post by Philip Rawson
snip<
there's a tiny circlip that holds the motor together
snip<
Your AXI is exactly like mine, and I do not see why the shaft clip would not
do the job. Those clips are used to hold large motors together with no
problem. Philip, do you use the lock collar? Have you used the motor without
the lock collar?
--
Marvin & Sue
Philip Rawson
2004-05-03 11:10:24 UTC
Permalink
When the motor is used with the clip at the front... ie, without the prop
adapter you've bought, there's no load on the clip... when you turn the
motor round and take the drive off the back the clip is taking the full
force from the prop... even with my tiny AXI, that's 2lbs of thrust... with
a bigger motor that figure could be up to 10 - 15lbs... I wouldn't trust the
tiny circlip with that...

I have used the motor both ways round... when running it backwards I used
the locking collar... but then again I did lose the circlip when I took the
motor to bits!
--
Philip Rawson

www.flymodels.co.uk
Post by Marvin & Sue
Post by Philip Rawson
snip<
there's a tiny circlip that holds the motor together
snip<
Your AXI is exactly like mine, and I do not see why the shaft clip would not
do the job. Those clips are used to hold large motors together with no
problem. Philip, do you use the lock collar? Have you used the motor without
the lock collar?
--
Marvin & Sue
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2015-11-12 10:11:19 UTC
Permalink
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