Notices
Gas Engines Questions or comments about gas engines can be posted here

Anti vibration mounts. - DLE 35

Old 08-26-2016, 02:30 PM
  #1  
DHC6
Thread Starter
My Feedback: (6)
 
DHC6's Avatar
 
Join Date: Dec 2011
Location: Limoges, On, Canada
Posts: 253
Likes: 0
Received 2 Likes on 2 Posts
Default Anti vibration mounts. - DLE 35

Hey guys,


I am just wondering what your thought are on anti vibration mounts. I have a pair of DLE 35's that I am mounting on my Ziroli 101" B25 and I am just concerned with long term vibration effects on the plane. These are the mounts I have,


http://www.6starhobby.com/engine-mou...pairs-set.html


I have herd some say that it's not good for gassers to be mounted on anti vibration kind of mounts, but never found any definitive reason why not to use isolation mounts.
Old 08-26-2016, 07:19 PM
  #2  
P38J
My Feedback: (14)
 
P38J's Avatar
 
Join Date: Jan 2002
Location: Peoria, AZ
Posts: 537
Likes: 0
Received 1 Like on 1 Post
Default

I prefer to soft mount my engines when possible I have not had any problems from doing so and I'm using them on my new project.
Attached Thumbnails Click image for larger version

Name:	20160415_213502.jpg
Views:	6676
Size:	2.72 MB
ID:	2178377   Click image for larger version

Name:	20160415_213555.jpg
Views:	4075
Size:	1.74 MB
ID:	2178378   Click image for larger version

Name:	20160416_105907.jpg
Views:	5395
Size:	2.82 MB
ID:	2178379  
Old 08-27-2016, 08:23 AM
  #3  
David Bathe
 
David Bathe's Avatar
 
Join Date: Mar 2008
Location: Oslo, NORWAY
Posts: 1,276
Likes: 0
Received 14 Likes on 8 Posts
Default

What one has to remember is that there are two alternatives: Soft mounts and isolation mounts. The difference is quite obvious, soft mounts "Hyde or similar" are soft. They allow the engine to wobble in the rotary axis. Unless specified, many will also require engine nose ring fitted to the aircraft to maintain a constant trust angle. This isn't as easy as it seems with a glass engine and a detailed scale cowl.

The other alternative is isolation mounting... as shown in the previous post. These keep the engine far more rigid than a soft mount, but because there isn't any direct engine to airframe contact, filter out quite a lot of the vibration buzz. Definitely the way to go for a scale application IMO.

Ive tried all types of soft mounts some years back in pattern aircraft. The Hyde mount was without the doubt the absolute best, resulting in a quite dramatic noise reduction. But they can induce a rather frightening wobble to the airframe at idle/low throttle setting. No problems for us but I'm sure it would, with extended use, easily shake the details out of you tail plane.

Last edited by David Bathe; 08-27-2016 at 08:26 AM.
Old 08-27-2016, 08:58 AM
  #4  
spaceworm
 
Join Date: Mar 2009
Location: Guilford, CT
Posts: 3,950
Received 2 Likes on 2 Posts
Default

Originally Posted by P38J
I prefer to soft mount my engines when possible I have not had any problems from doing so and I'm using them on my new project.
I am confused, are these "soft" or "isolation" mounts? Thanks.
Old 08-27-2016, 10:21 AM
  #5  
DHC6
Thread Starter
My Feedback: (6)
 
DHC6's Avatar
 
Join Date: Dec 2011
Location: Limoges, On, Canada
Posts: 253
Likes: 0
Received 2 Likes on 2 Posts
Default

So to be specific mine would be isolation mounts. I'm not concerned with noise cancellation, I'm more looking to take the edge off the engine vibrations to extend the life of the airframe. If they are not good for the engines then I will increase my inspection intervals.
Old 08-27-2016, 01:17 PM
  #6  
P38J
My Feedback: (14)
 
P38J's Avatar
 
Join Date: Jan 2002
Location: Peoria, AZ
Posts: 537
Likes: 0
Received 1 Like on 1 Post
Default

Let me correct my nomenclator the mounts that I use dampens the vibration going into the airframe so that would be classified as anti vibration or isolation mount.

Attached Thumbnails Click image for larger version

Name:	20160415_213502.jpg
Views:	3244
Size:	2.72 MB
ID:	2178491  
Old 08-29-2016, 09:03 PM
  #7  
Hughes500E
Senior Member
My Feedback: (16)
 
Hughes500E's Avatar
 
Join Date: Nov 2002
Location: Armstrong, BC, CANADA
Posts: 1,514
Likes: 0
Received 0 Likes on 0 Posts
Default

Holy smokes Wayne, that's quite the project. May I ask where one would go to purchase the mounting hardware in your pic ;-)

Last edited by Hughes500E; 08-29-2016 at 09:05 PM.
Old 09-08-2016, 03:25 PM
  #8  
P38J
My Feedback: (14)
 
P38J's Avatar
 
Join Date: Jan 2002
Location: Peoria, AZ
Posts: 537
Likes: 0
Received 1 Like on 1 Post
Default

Sorry for taking so long to respond haven't been on RCU much lately. You can find the mounts here they have two different sizes.
http://www.secraft.net/shop/step0.ph...20100430013318
Old 05-17-2017, 03:58 AM
  #9  
Dave57
Junior Member
 
Join Date: May 2017
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default Anti Vibration mount

You might need anti vibration mounts. Some are more elaborate than others take a look at this products, could be interesting:

https://www.mecanocaucho.com/en-GB/p...tion-mounting/

Dave

Old 04-07-2021, 06:21 AM
  #10  
avindustrial
Junior Member
 
Join Date: Apr 2021
Location: UK
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default

Why Use Anti Vibration Mounts?

Anti vibration mounts play a significant role in the overall functioning of the various machine components. If you do not install these mounts, the vibrations could potentially lead to a breakdown or total failure of the entire machine.

Old 04-08-2021, 03:39 AM
  #11  
ahicks
My Feedback: (2)
 
Join Date: Aug 2008
Location: Waterford, Mi/Citrus Springs, Fl
Posts: 3,821
Received 19 Likes on 17 Posts
Default

Originally Posted by avindustrial
Why Use Anti Vibration Mounts?

Anti vibration mounts play a significant role in the overall functioning of the various machine components. If you do not install these mounts, the vibrations could potentially lead to a breakdown or total failure of the entire machine.
You would think so watching them run on an idle, but there are a lot of us that have been flying these things for quite some time now, with no vibration related structural damage. That pretty much proves no vibration mounts are necessary/required.
Old 04-08-2021, 09:21 AM
  #12  
tedsander
 
Join Date: Jul 2004
Location: White Bear lake, MN
Posts: 754
Likes: 0
Received 68 Likes on 64 Posts
Default

Originally Posted by ahicks
You would think so watching them run on an idle, but there are a lot of us that have been flying these things for quite some time now, with no vibration related structural damage. That pretty much proves no vibration mounts are necessary/required.
You responded to what was likely a post by a bot or a troll, in either case not a real person at a keyboard.
1. Thread revived from the dead (last real post was 2017)
2. This is the only post that the poster ever made.
3. Post was only marginally/generically related to the subject.

Seems to be an awful lot of these happening lately.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.