here is what I am planning on using in my new model - I am going to have the battery access from a side hatch on the inboard side - battery slides in really easy and is held in place by the aluminium angles, plus front and rear stops...as an added precaution, there will be velcro on the outboard fuse doubler, and the "base" of the battery where it meets that side.

I figure that the centrifugal force will keep the battery hard against the outboard side, so it shouldn't go anywhere.......

there is not a lot of space to play with in the nose of the plane I am building - but it will have HEAPS of cooling air, so figure I might be OK .

motor is front mounted on custom made composite ply (basically 4 layers of 1/16th 5 ply, at 90 degree angles with fibreglass in the between)  ....sides are 1/16th ply and will obviously be the nose doublers....

the component weighs 60grams without the motor etc - and I will be taking a little more off that when it is final sanded....

so - any comments,or areas I need to fix?  any help is appreciated,

Wynn

I can't tell because we obviously cannot see the 3 dimensional path the motor has for removal. But be sure you can get it out. The forward battery stop looks like it might impede your being able to remove the motor if the shaft is too long or you get a limited removal angle. Other than that it looks workable. Also evaluate that you will have enough stiffness in the top and bottom blocks (sheeting or whatever) to keep the nose from twisting off. With the hatch in the side the top and bottom blocks will have that role. If you put a removable cowl bottom block going back beyond the motor mount you may loose the stability you would like to have.

bob branch

Good thinking, Wynn!
I contemplated something like this but with the upper and lower plates extended to grab the wing spar. I have yet to build it though!
take care,
  Dean P.

the aluminium is a lot softer than you might think - it will bend if a extreme load is applied - but I am past point of planting them (I think)