It looks like most outrunner electrics are rear mounted with the spinning part forward.

I see that the E-Flite 25 has provision to run the shaft past the mounting plate to mount
from a forward bulkhead.  Has anyone mounted an electric motor to the nose ring ?

It seems the mounting requirements for an electric are less formidable than IC engines
because they are so smooth.

Rex

PS : Maybe Bob Palmer was ahead of his time mounting a Fox .35 by the backplate (Mars).

 

Rex,
do NOT underestimate the requirment for strength in mounting an electric,, they are easily as torquey as glow motors, it is true they dont have the vibration, but they are still subjected to the same loads other than vibration,, I have seen several firewalls pull out because people were  cavalier about firewall integrity

Rex,
do NOT underestimate the requirment for strength in mounting an electric,, they are easily as torquey as glow motors, it is true they dont have the vibration, but they are still subjected to the same loads other than vibration,, I have seen several firewalls pull out because people were  cavalier about firewall integrity

I had an electric motor land in (not on) the wing of my Twister because of this, at the Regionals in 2015.  I'm actually happier to be the one landed upon than to dwell on how I would have felt if it'd been my motor sticking out of Paul's or Brett's wing.

Bob Hunt had some pics on here of his front mount installation.




MM

I have a manual that shows in detail how to size and install a front mount system. It is in PDF format and I'll gladly send it via email to anyone who wants it. Just send me your email address and I'll forward it asap.

Later - Bob Hunt   

Bob,

   Thanks for the pix. It looks like you have the most elegant system I've seen or contemplated.

   When you do it for a full fuselage plane, are there stubby motor beams that catch the slots in the motor plate ?

   And, what is the motor mount plate made from ; a SIGment compatible material I hope.

   When I finish a nose assembly, I usually put a 1/ 4"  dia  hole in the nose ring and "sharpen" the nose by spinning the
whole fuselage on the axis of the hole to create a concentric cone to work from.  I could do the same thing here by making an
adapter plate with a 1/4" hole in it.  Certainly, and RC style motor box is a waste of effort and would lead to problems in
getting a fine entry for the nose.

    I assume the finished fuselage probably has a jet engine inlet style (rolled over) of nose ring.

    My E-Mail is rex1945a@gmail.com.

    The attached picture is "Second Hand Rose" which is to be the recipient of and electric conversion after an "unfortunate"
accident with my Saito .40.

Rex

Thanks for the help.
 
 

Troubles with bearing on AXI2826 motors were caused by running at resonantion RPM.It is hard to tell until it starts to scream, and that is already too late, it needs to change not only bearing, but also rotor as it is usually out of balance. I spoke to maker and I was told resonantion appears at about 9000 or 9500 RPM, means exactly where we flew our models with APC 12x6 props. Then we went to lower pitch 5" and sinthen I do not have problems, I fly motor without maintenance whole year, then I send motor during winter to replace bearing and problem solved.