 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
Mark Burton
Joined: 10 Jan 2006
Posts: 74
|
 Posted: Sat Nov 17, 2007 11:48 am Post subject: Smooth Prop |
 |
|
Howdy folks,
Not much happening on the list these days so here's something to ponder.
Today, I went to the airfield to dynamically balance an Arplast PV50 prop fitted to a Rotax 912S on a Kitfox.
Without adding any weights, it measured 0.02 IPS vibration which is an extremely good result - I thought for a 912S, absolutely outstanding. The carbs had recently been balanced by Adrian at Shobdon and they must be spot on.
I was so impressed, I blagged a ride in the Kitfox to see what it was like in the air and, no kidding, if you put your hand on the instrument panel or structure, you could not feel any vibration at all - it was uncanny.
The point of this story is that it is possible to achieve no perceptable prop vibration on a 912S. So, if you can feel vibration, something isn't right.
Cheers,
Mark
| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Europa-List |
|
|
|
| Back to top |
|
 |
grahamsingleton(at)btinte
Guest
|
| Posted: Sat Nov 17, 2007 2:45 pm Post subject: Smooth Prop |
|
|
Mark
That's encouraging news. imho the Arplast prop blades are very good, Not
too stiff so they don't rattle like Warps do and plenty of area near the
root to help cooling at low speeds.
I have always wondered about residual vibration, you can never tell if
it is due to some criterion that cannot be balanced out. Good to have
cinfirmation that it can!
Graham
Mark Burton wrote:
| Quote: |
Howdy folks,
Not much happening on the list these days so here's something to ponder.
Today, I went to the airfield to dynamically balance an Arplast PV50 prop fitted to a Rotax 912S on a Kitfox.
Without adding any weights, it measured 0.02 IPS vibration which is an extremely good result - I thought for a 912S, absolutely outstanding. The carbs had recently been balanced by Adrian at Shobdon and they must be spot on.
I was so impressed, I blagged a ride in the Kitfox to see what it was like in the air and, no kidding, if you put your hand on the instrument panel or structure, you could not feel any vibration at all - it was uncanny.
The point of this story is that it is possible to achieve no perceptable prop vibration on a 912S. So, if you can feel vibration, something isn't right.
Cheers,
Mark
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=146675#146675
|
--
Graham Singleton
Tel: +441629820187
Mob: +447739582005
| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Europa-List |
|
|
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
