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Author Topic: Rear bearing support mounts? Suggested by Norman Whittle.  (Read 850 times)

Offline Avaiojet

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Rear bearing support mounts? Suggested by Norman Whittle.
« on: December 31, 2013, 04:39:36 PM »
It's great to dig for information. My shovel is getting bigger.  ;D

It's also great when you compare information from many sources. The results can be interesting to say the least!

I didn't dig this photo up, a fellow SH modeler sent me the link. Yes, true!  H^^

Obviously the photo shows a rear bearing support. First I heard of this?

Evidently someone belives it's necessary? Looks like Norman Whittle wrote the piece.

So, anyone using one?

Here's the link for anyone that may have interest, it's a good read!

http://www.castlecreations.com/products/control_line_stunt_setup.html

Charles
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Offline John Cralley

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Re: Rear bearing support mounts? Suggested by Norman Whittle.
« Reply #1 on: December 31, 2013, 06:38:11 PM »
On large front mount motors some say you need it some say you don't!  y1
 ;D S?P
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John Cralley
Scratch Built - Often Re-kitted!!!
AMA 52183
Central Illinois

Rick_Huff

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Re: Rear bearing support mounts? Suggested by Norman Whittle.
« Reply #2 on: December 31, 2013, 06:59:50 PM »
Charles,
I ended up using one on a profile RD1.  The front mount I made wasn't stiff enough and some vibrations ensued.  The very simple rear bearing that I added completely solved the problem. 
Rick
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Offline Avaiojet

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Re: Rear bearing support mounts? Suggested by Norman Whittle.
« Reply #3 on: December 31, 2013, 07:20:27 PM »
Quote from: Rick Huff on December 31, 2013, 06:59:50 PM
Charles,
I ended up using one on a profile RD1.  The front mount I made wasn't stiff enough and some vibrations ensued.  The very simple rear bearing that I added completely solved the problem. 
Rick

Rick,

Thanks for the reply!

Where did you get the bearing and shaft plus the mount holder?  Everything has to be secure and stay in place?

Charles

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If you're Trolled, you know you're doing something right.  Alpha Mike Foxtrot. "No one has ever made a difference by being like everyone else."  Marcus Cordeiro, The "Mark of Excellence," you will not be forgotten. "No amount of evidence will ever persuade an idiot."- Mark Twain. I look at the Forum as a place to contribute and make friends, some view it as a Realm where they could be King.   Proverb 11.9  "With his mouth the Godless destroys his neighbor..."  "Perhaps the greatest challenge in modeling is to build a competitive control line stunter that looks like a real airplane." David McCellan, 1980.

Rick_Huff

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Re: Rear bearing support mounts? Suggested by Norman Whittle.
« Reply #4 on: January 02, 2014, 01:03:28 PM »
Charles,
I got the bearing from McMaster Carr.  The motor is an E-Flite 15 and I bought an E-Flight 25 shaft to use in the E-Flight 15.  Its about 1/4" longer and just the right length for the bearing.  I made the bearing mount out of a small piece of basswood.  It's real simple, but it works.  I have a pic somewhere that I'll post when I find it.
Rick
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Rick_Huff

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Re: Rear bearing support mounts? Suggested by Norman Whittle.
« Reply #5 on: January 02, 2014, 01:10:36 PM »
Here's a pic of the rear bearing.  The motor was slid forward for the photo.
Rick
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Offline Avaiojet

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Re: Rear bearing support mounts? Suggested by Norman Whittle.
« Reply #6 on: January 02, 2014, 02:24:15 PM »
Rick,

What a guy! Thanks for the photos!

Nice work on your metal mount? Clever.

5mm on the bearing shaft thickness?

Obviously, the rear bearing has to be centered on the money.

Bearing/mount glued in place after the motor was in place?

Thanks again for that info and photos!!

Charles


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Trump Derangement Syndrome. TDS. 
Avaiojet Derangement Syndrome. ADS.
Amazing how ignorance can get in the way of the learning process.
If you're Trolled, you know you're doing something right.  Alpha Mike Foxtrot. "No one has ever made a difference by being like everyone else."  Marcus Cordeiro, The "Mark of Excellence," you will not be forgotten. "No amount of evidence will ever persuade an idiot."- Mark Twain. I look at the Forum as a place to contribute and make friends, some view it as a Realm where they could be King.   Proverb 11.9  "With his mouth the Godless destroys his neighbor..."  "Perhaps the greatest challenge in modeling is to build a competitive control line stunter that looks like a real airplane." David McCellan, 1980.

Rick_Huff

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Re: Rear bearing support mounts? Suggested by Norman Whittle.
« Reply #7 on: January 02, 2014, 02:41:11 PM »
I can't take credit for the front mount design.  I saw it on this forum a while back, can't remember who's idea it was.  Yes it's a 5mm shaft, and you're correct about gluing the rear mount in place with the motor mounted.
Rick











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