Return-Path: Sender: (Marvin Kaye) To: lml Date: Fri, 27 Dec 2002 18:42:34 -0500 Message-ID: X-Original-Return-Path: Received: from imo-d10.mx.aol.com ([205.188.157.42] verified) by logan.com (CommuniGate Pro SMTP 4.0.3) with ESMTP id 1940337 for lml@lancaironline.net; Fri, 27 Dec 2002 17:41:19 -0500 Received: from AVIDWIZ@aol.com by imo-d10.mx.aol.com (mail_out_v34.13.) id q.115.1cae7c44 (4328) for ; Fri, 27 Dec 2002 17:41:09 -0500 (EST) From: AVIDWIZ@aol.com X-Original-Message-ID: <115.1cae7c44.2b3e3104@aol.com> X-Original-Date: Fri, 27 Dec 2002 17:41:08 EST Subject: Scimitar Prop vs. Original Hartzell Prop - Comparison X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_115.1cae7c44.2b3e3104_boundary" X-Mailer: AOL 7.0 for Windows US sub 10629 --part1_115.1cae7c44.2b3e3104_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Gentlemen: I just installed a Hartzell Scimitar prop on my IVP and have the following data comparing it to the original 3 blade Hartzell. Still testing but the initial results look very good and I thought I would share them with you: Please Note: All test figures are 100 degrees ROP with FF in the mid 20's. SPEED PERFORMANCE 3000 MSL 31" x 25 RPM = 195 KIAS (old prop) 3000 MSL 31" x 25 RPM = 208 KIAS (scimitar ) 10,000 MSL 31" x 25 RPM = 191 KIAS (old prop) 10,000 MSL 31" x 25 RPM = 203 KIAS (scimitar prop) 16,500 MSL 31" x 24 RPM = 185 KIAS (old prop) 16,500 MSL 31" x 24 RPM = 193 KIAS (scimitar prop) FL 240 30" x 2410 RPM = 174 KIAS (old prop) FL 240 30" x 2410 RPM = 180 KIAS (scimitar prop) CLIMB PEFORMANCE: Alt: 3500 MSL 31.5" MP and 2500 RPM @ 155 KIAS = 1050 FPM (old prop) Alt: 3500 MSL 31.5" MP and 2500 RPM @ 155 KIAS = 1500 FPM (scimitar prop) Alt: 3500 MSL 31.5" MP and 2500 RPM @ 140 KIAS = 1250 FPM (old prop) Alt: 3500 MSL 31.5" MP and 2500 RPM @ 140 KIAS = 2000 FPM (scimitar prop) BOTTOM LINE: Climb improves 30 - 50% and speed increases 10-12 kts down low and 6-8 kts up high. More details will follow as we work out the fine points and gather enough data to be a meaningful sample. If everything in aviation yeilded 1 KIAS for every $1000 spent, we would all be flying around at Mach 1 :) Happy new year to all Dave Riggs --part1_115.1cae7c44.2b3e3104_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: 7bit Gentlemen:

I just installed a Hartzell Scimitar prop on my IVP and have the following data comparing it to the original 3 blade Hartzell.   Still testing but the initial results look very good and I thought I would share them with you:

Please Note:  All test figures are 100 degrees ROP with FF in the mid 20's.

SPEED PERFORMANCE
3000 MSL  31" x 25 RPM = 195 KIAS (old prop)
3000 MSL  31" x 25 RPM = 208 KIAS (scimitar )

10,000 MSL 31" x 25 RPM = 191 KIAS (old prop)
10,000 MSL 31" x 25 RPM = 203 KIAS (scimitar prop)

16,500 MSL 31" x 24 RPM =  185 KIAS (old prop)
16,500 MSL 31" x 24 RPM =  193 KIAS (scimitar prop)

FL 240  30" x 2410 RPM = 174 KIAS (old prop)
FL 240  30" x 2410 RPM = 180 KIAS (scimitar prop)

CLIMB PEFORMANCE:
Alt:  3500 MSL 31.5" MP and 2500 RPM @ 155 KIAS = 1050 FPM (old prop)
Alt:  3500 MSL 31.5" MP and 2500 RPM @ 155 KIAS = 1500 FPM (scimitar prop)

Alt:  3500 MSL 31.5" MP and 2500 RPM @ 140 KIAS = 1250 FPM (old prop)
Alt:  3500 MSL 31.5" MP and 2500 RPM @ 140 KIAS = 2000 FPM (scimitar prop)

BOTTOM LINE:
Climb improves 30 - 50% and speed increases 10-12 kts down low and 6-8 kts up high.   More details will follow as we work out the fine points and gather enough data to be a meaningful sample.

If everything in aviation yeilded 1 KIAS for every $1000 spent, we would all be flying around at Mach 1 :)

Happy new year to all

Dave Riggs --part1_115.1cae7c44.2b3e3104_boundary--