VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.


Go Back   VAF Forums > Model Specific > RV-12/RV-12iS
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 08-07-2020, 08:09 AM
Jamesey Jamesey is offline
 
Join Date: Feb 2008
Location: Hartlepool, England
Posts: 195
Default Propeller Installation - Old Style

I have the prop set up with the old D hub with the white pitch adjustment cylinder. Hub also supplied with a Pitch Stop Ring already fitted. Question for the oldies that have this set up, is the Pitch Stop Ring removed?? It would appear so from drawing 47-03 Fig 2 Rev 0 06/16/09 where it is not shown. With it fitted adjustment range is virtually zero. Any clarification welcome.
Reply With Quote
  #2  
Old 08-07-2020, 08:23 AM
rvbuilder2002's Avatar
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,452
Default

The adjustment range you see with it installed is probably more than you think it is since 1 degree of pitch change is actually quite a lot of change, performance wise.

There is no negative to you removing it but once you start flying (assuming you aren't since you are asking about it) I think you will find that the adjustment range that you need, falls within the limits of the stop ring.
__________________
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.

Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
Reply With Quote
  #3  
Old 08-07-2020, 10:39 PM
DaveWelch DaveWelch is offline
 
Join Date: Mar 2005
Location: Huntsville, AL
Posts: 452
Default

My experience was exactly what Scott said.
And who are you calling “oldie”!? ��
__________________
Dave
RV12 N951DZ
First Flight 9/23/16!
No paint yet. Working on a scheme with John Deere colors or accents.
Reply With Quote
  #4  
Old 08-08-2020, 08:53 AM
NinerBikes NinerBikes is offline
 
Join Date: Dec 2018
Location: L.A.
Posts: 1,154
Default

Didn't Sensenich update these hubs to a newer version that doesn't require inspections for cracks so frequently?
__________________
Donated
RV-12, KWHP based

"Time to Spare, go by Air."
Reply With Quote
  #5  
Old 08-08-2020, 08:57 AM
DaleB's Avatar
DaleB DaleB is offline
 
Join Date: Sep 2012
Location: Omaha, NE (KMLE)
Posts: 2,320
Default

Quote:
Originally Posted by NinerBikes View Post
Didn't Sensenich update these hubs to a newer version that doesn't require inspections for cracks so frequently?
We had the front half of out hub replaced with the newer style that doesn't require the 50 hour inspections. I just couldn't see pulling the prop apart twice a year and having to re-set the pitch.
__________________
Dale

Omaha, NE
RV-12 # 222 N980KM "Screamin' Canary" (bought flying)
Fisher Celebrity (under construction)
Previous RV-7 project (sold)
Reply With Quote
  #6  
Old 08-08-2020, 10:19 AM
Jamesey Jamesey is offline
 
Join Date: Feb 2008
Location: Hartlepool, England
Posts: 195
Default

Scott, ref post #2 can I assume that leaving the limiter in that the 71.4 degrees required per page 47-07 Rev 0 05/19/15 can be achieved?
Reply With Quote
  #7  
Old 08-08-2020, 02:43 PM
NinerBikes NinerBikes is offline
 
Join Date: Dec 2018
Location: L.A.
Posts: 1,154
Default

Quote:
Originally Posted by Jamesey View Post
Scott, ref post #2 can I assume that leaving the limiter in that the 71.4 degrees required per page 47-07 Rev 0 05/19/15 can be achieved?
I would get the newer style unit in and buy the jig from Van's for setting prop pitch properly to 0.1 degree pitch variation or less. You don't want a poorly matched set of pitches on your propeller causing all kinds of destructive vibration on these engines and their components. Fasteners and brackets for for Electronic ignitions and all sorts of other items can and will vibrate to death and failure.

Match the pitch as close as possible, and if need be, also get your prop balanced.
__________________
Donated
RV-12, KWHP based

"Time to Spare, go by Air."
Reply With Quote
  #8  
Old 08-08-2020, 02:46 PM
rvbuilder2002's Avatar
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,452
Default

Quote:
Originally Posted by Jamesey View Post
Scott, ref post #2 can I assume that leaving the limiter in that the 71.4 degrees required per page 47-07 Rev 0 05/19/15 can be achieved?
Yes, you should be able to set that pitch value with it in place.
Are you having trouble doing that?
__________________
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.

Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
Reply With Quote
  #9  
Old 08-08-2020, 03:46 PM
Jamesey Jamesey is offline
 
Join Date: Feb 2008
Location: Hartlepool, England
Posts: 195
Default

Quote:
Originally Posted by rvbuilder2002 View Post
Yes, you should be able to set that pitch value with it in place.
Are you having trouble doing that?
Just about to try. 😀
Reply With Quote
  #10  
Old 10-01-2020, 11:55 AM
NinerBikes NinerBikes is offline
 
Join Date: Dec 2018
Location: L.A.
Posts: 1,154
Default

Quote:
Originally Posted by Jamesey View Post
Just about to try. 😀
How did it turn out, the results?
__________________
Donated
RV-12, KWHP based

"Time to Spare, go by Air."
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 04:03 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.