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.

  #1  
Old 04-27-2011, 09:25 AM
pierre smith's Avatar
pierre smith pierre smith is offline
 
Join Date: Jan 2005
Location: Louisville, Ga
Posts: 7,932
Default Hartzell prop RPM limits

In another thread from yesterday, Doug was shooting for economy and I went out and tried some efficiency tests.

A discussion of prop RPM limitations came up, so I called Hartzell a little while ago.

My blended airfoil prop has no RPM limitations, other than a 2700 RPM redline, and continuous operation at any RPM is OK with the IO-540 Lycs with no more than 285 HP.

The IO/O-360 engines do have an RPM "window" limitation of 2000-2250 continuous for some blades so your best bet would be to go to Hartzell for good info.

Best,
__________________
Rv10 Sold
46 years ag pilot/CFI
Air Tractor 502/PT-6
Building RV-12, Wings, fuse, emp complete. FWF in progress.
Reply With Quote
  #2  
Old 04-27-2011, 10:10 AM
shuttle's Avatar
shuttle shuttle is offline
 
Join Date: Dec 2006
Location: UK
Posts: 368
Default Hartzell Prop Application Guide

See pages 1276 - 1291 in this document (Application Guide) for Hartzell prop details on Van's a/c:

http://www.hartzellprop.com/public_dl.php?id=811 (7Mb download)

It is bang up to date - April 2011
__________________
Steve Hutt
West Sussex, UK
RV-7 G-HUTY (not flying yet)
( Tip-UP / TMX-IO-360-M1B / Hartzell 7497-2 / 1x LSE PLASMA III / Dual AF4500's / AF-Pilot AP / 695 )
Reply With Quote
  #3  
Old 04-27-2011, 02:23 PM
Flying Scotsman Flying Scotsman is offline
 
Join Date: Nov 2005
Posts: 1,256
Default

Quote:
Originally Posted by shuttle View Post
See pages 1276 - 1291 in this document (Application Guide) for Hartzell prop details on Van's a/c:

http://www.hartzellprop.com/public_dl.php?id=811 (7Mb download)

It is bang up to date - April 2011
Forgive me if I missed this, but I didn't see the "stock" Van's IO-260-M1B 180 HP and the stock Van's BA Hartzell prop (7497) listed.

There is a listing for an IO-360 (no suffix) but for 200 HP engines, not 180HP.

There are listings for -A1A engines at 180 HP with the 7496 blades.

I asked Hartzell for this about a year ago, and they didn't have it at that time.

Am I missing it now, or is it just not there (still)?

ETA:

See this thread:

http://www.vansairforce.com/communit...tations&page=2

and note that we were talking about STOCK Lycoming from Van's, which means 2 mags (no LASAR or anything else).
__________________
Steve "Flying Scotsman"
Santa Clarita, CA
PP-ASEL, ASES, Instrument Airplane

RV-7A N660WS flying!
#8,000

Last edited by Flying Scotsman : 04-27-2011 at 02:36 PM.
Reply With Quote
  #4  
Old 04-29-2011, 01:01 PM
lesdoud lesdoud is offline
 
Join Date: Jan 2006
Posts: 34
Default 7497 approved on IO-360-M1B

Steve,

Yes, the 7497 is approved on the stock IO-360-M1B without any restrictions. This is one of a few configurations that is not yet in Note 9 of TCDS P-920. We approved it with the LSE Plasma III so a stock engine with magnetos is approved by similarity (experience has shown electronic ignitions produce higher stresses).

We have an information sheet that I can provide if you need one? Just e-mail me at ldoud@hartzellprop.com.

Les Doud
Reply With Quote
  #5  
Old 04-30-2011, 09:06 PM
rckol rckol is offline
 
Join Date: Mar 2009
Location: Cedar Grove, WI
Posts: 13
Default

Les,

would this approval extend to PMags?

Is it specific to any airframe?

TIA.
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 06:58 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.