News:


  • May 13, 2024, 06:33:23 AM

Login with username, password and session length

« previous next »
Pages: [1]   Go Down

Author Topic: Motor pads ?  (Read 903 times)

Offline Rob Killick

  • 2013 Supporter
  • Trade Count: (0)
  • Commander
  • *
  • Posts: 388
Motor pads ?
« on: April 07, 2013, 03:04:34 PM »
Hi ,

Newb question time  ...

I've installed 1/8" thick aluminum pads on the motor crutch (inverted motor mounting) and I was wondering if all I have to do is move the nose ring to accommodate the new spinner , back plate location ?
All I see different , is the motor center line (profile view) is 1/8" lower than the plan original , profile center line .
Will this cause any problems ?

Thanks ,

Rob K.

Logged
Rob Killick , MAAC 33300

Offline Paul Wood

  • 21 supporter
  • Trade Count: (0)
  • Commander
  • *
  • Posts: 297
Re: Motor pads ?
« Reply #1 on: April 08, 2013, 07:20:59 AM »
Rob,

I would be aware of the tank location in relation to the engine.  As far as vertical CG and flight performance, I wouldn't think the difference would be noticed. 

Paul
Logged

Offline Tim Wescott

  • 2016 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 12818
Re: Motor pads ?
« Reply #2 on: April 08, 2013, 08:39:50 AM »
I've never put pads in a full-fuselage model (I haven't built more than one!!).  I'd keep the engine in the same place in the plane, though, either by relieving the bearers where the pads go, or moving the bearers up.

Taking a spin through as many build threads as you can find in "Building Techniques" and seeing what was done should give you some ideas.
Logged
AMA 64232

The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline Doug Moon

  • 24 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 2194
Re: Motor pads ?
« Reply #3 on: April 08, 2013, 02:08:16 PM »
what plane is it?
Logged
Doug Moon
AMA 496454
Dougmoon12@yahoo.com

Offline Rob Killick

  • 2013 Supporter
  • Trade Count: (0)
  • Commander
  • *
  • Posts: 388
Re: Motor pads ?
« Reply #4 on: April 08, 2013, 03:08:05 PM »
For Doug's question  ...

The  model is C. A. Mackey's Blue Bird . with a Brodak .25 for power .

Tim ,

The aluminum pads  aren't adhered to the  maple mounts , other than the mounting bolts and engine lugs , holding them to the maple .

Thanks for viewing my post ,

Rob K.
Logged
Rob Killick , MAAC 33300

Offline Doug Moon

  • 24 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 2194
Re: Motor pads ?
« Reply #5 on: April 08, 2013, 03:44:40 PM »
If it is not an in line design I would be tempted to just roll with it.  Make the adjustment to the nose ring.  Make sure there is enough room to adjust the tank down another 1/8 that you have lowered the motor.  1/8" is probably not noticeable. 

At the same time maple beams are plenty hard enough to handle a .25 without much crushing. 

Its your choice but I don't think you run into problems either way.
Logged
Doug Moon
AMA 496454
Dougmoon12@yahoo.com

Offline Rob Killick

  • 2013 Supporter
  • Trade Count: (0)
  • Commander
  • *
  • Posts: 388
Re: Motor pads ?
« Reply #6 on: April 08, 2013, 05:41:42 PM »
Gentlemen ...

I think I will go with the plain maple mounts and build as per plan . Maybe with more searches , I can get a better idea of what should be done to te front end of my future models . y1

Thank you very much ,

Rob K.
Logged
Rob Killick , MAAC 33300

Advertise Here
Pages: [1]   Go Up
« previous next »
Tags:
 


Advertise Here