VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics


Go Back   VAF Forums > Main > RV Ongoing Maintenance Issues
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 10-10-2019, 12:20 PM
Karetaker's Avatar
Karetaker Karetaker is offline
 
Join Date: Aug 2017
Location: USA
Posts: 51
Default Differential Pressure Test Kit

I would like to purchase a test kit; any suggestions on brand, place to purchase, etc.?

Thanks.
__________________
Mike
Vans RV and Pietenpol Channel
https://www.youtube.com/channel/UCna...sOaZYjSWIGeXlQ
Reply With Quote
  #2  
Old 10-10-2019, 05:11 PM
noelf noelf is offline
 
Join Date: Nov 2007
Location: Cary, N.C.
Posts: 1,176
Default

Are you thinking pitot/static or engine cylinder testing?
__________________
Noel
RV-6A N6NF
tip-up
flying
Reply With Quote
  #3  
Old 10-10-2019, 08:12 PM
rightrudder rightrudder is offline
 
Join Date: Mar 2014
Location: Laguna Hills, CA
Posts: 1,783
Default

I have this one. Works well!

https://www.aircraftspruce.com/catal...clickkey=24263

Description is a little misleading, as the copy indicates that it's for a Rotax 912, but it has fittings for Lycoming/Continental.
__________________
Doug
RV-9A "slider"
Flew to Osh in 2017, 2018 & 2019!
Tail number N427DK
Donation made for 2020
You haven't seen a tree until you've seen its shadow from the sky -- Amelia Earhart
Reply With Quote
  #4  
Old 10-11-2019, 07:29 AM
Karetaker's Avatar
Karetaker Karetaker is offline
 
Join Date: Aug 2017
Location: USA
Posts: 51
Default

Engine cylinders. Thanks.
__________________
Mike
Vans RV and Pietenpol Channel
https://www.youtube.com/channel/UCna...sOaZYjSWIGeXlQ
Reply With Quote
  #5  
Old 10-11-2019, 09:20 AM
DanH's Avatar
DanH DanH is offline
 
Join Date: Oct 2005
Location: 08A
Posts: 9,005
Default

Quote:
Originally Posted by Karetaker View Post
I would like to purchase a test kit; any suggestions on brand, place to purchase, etc.? Thanks.
These days the fundamental choice is to buy a test set with or without a Continental orifice. You'll need the extra doodad to discuss anything about cylinders with a Continental rep. Not needed for a Lycoming.

Read the sidebar for details:

https://www.danhorton.net/Articles/0...ompression.pdf
__________________
Dan Horton
RV-8 SS
Barrett IO-390
Reply With Quote
  #6  
Old 10-15-2019, 07:27 AM
Karetaker's Avatar
Karetaker Karetaker is offline
 
Join Date: Aug 2017
Location: USA
Posts: 51
Default

Thanks Dan. I need something to test both my Continental A65 and my some-day-to-come Lycoming. I think I have a handle on it now.
__________________
Mike
Vans RV and Pietenpol Channel
https://www.youtube.com/channel/UCna...sOaZYjSWIGeXlQ
Reply With Quote
  #7  
Old 10-15-2019, 09:02 AM
akabud akabud is offline
 
Join Date: Jan 2019
Location: Galt, CA
Posts: 56
Default

Quote:
Originally Posted by Karetaker View Post
Thanks Dan. I need something to test both my Continental A65 and my some-day-to-come Lycoming. I think I have a handle on it now.
I believe you need different testers for A65 and the Lycoming. They have a different size orifice for different displacement.
__________________
RV-6 Built and sold
Rv-3A Bought. Flying.
Reply With Quote
  #8  
Old 10-18-2019, 07:31 AM
DanH's Avatar
DanH DanH is offline
 
Join Date: Oct 2005
Location: 08A
Posts: 9,005
Default

Quote:
Originally Posted by akabud View Post
I believe you need different testers for A65 and the Lycoming. They have a different size orifice for different displacement.
No, they don't.

The gauge orifice for small engines has specified diameter of 0.040”
and an entrance angle between 59 and 60 degrees. You’ll find references
requiring a 0.060” orifice for use with a bore diameter larger than
5 inches. However, a manufacturer’s service information takes priority
over any advisory material. Lycoming SI 1191A and Continental SB 03-3
specify the 0.040” orifice for all engine models, including those with
bores in excess of 5 inches
__________________
Dan Horton
RV-8 SS
Barrett IO-390
Reply With Quote
  #9  
Old 10-18-2019, 09:08 AM
akabud akabud is offline
 
Join Date: Jan 2019
Location: Galt, CA
Posts: 56
Default

Quote:
Originally Posted by DanH View Post
No, they don't.

The gauge orifice for small engines has specified diameter of 0.040”
and an entrance angle between 59 and 60 degrees. You’ll find references
requiring a 0.060” orifice for use with a bore diameter larger than
5 inches. However, a manufacturer’s service information takes priority
over any advisory material. Lycoming SI 1191A and Continental SB 03-3
specify the 0.040” orifice for all engine models, including those with
bores in excess of 5 inches
Interesting.
So all of us out here that are using the E2A-1000 tester that ACS says is for cylinders of 5.00 inch bore and over are getting erroneously high readings?
__________________
RV-6 Built and sold
Rv-3A Bought. Flying.
Reply With Quote
  #10  
Old 10-18-2019, 09:40 AM
DanH's Avatar
DanH DanH is offline
 
Join Date: Oct 2005
Location: 08A
Posts: 9,005
Default

Quote:
Originally Posted by akabud View Post
Interesting.
So all of us out here that are using the E2A-1000 tester that ACS says is for cylinders of 5.00 inch bore and over are getting erroneously high readings?
Yes.

https://www.lycoming.com/sites/defau...ompression.pdf
__________________
Dan Horton
RV-8 SS
Barrett IO-390
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 08:22 PM.


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.