X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from elasmtp-dupuy.atl.sa.earthlink.net ([209.86.89.62] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5510286 for flyrotary@lancaironline.net; Thu, 26 Apr 2012 12:44:27 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.62; envelope-from=n360tg@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=sitmksuO0s7OBC65lZXCdNaQzkZ2ksYRNUicEQWtxQixxDGEXBXjVzz19guZMjQD; h=Received:From:Mime-Version:Content-Type:Subject:Date:In-Reply-To:To:References:Message-Id:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [173.163.220.153] (helo=[192.168.6.62]) by elasmtp-dupuy.atl.sa.earthlink.net with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.67) (envelope-from ) id 1SNRnK-0005xe-RL for flyrotary@lancaironline.net; Thu, 26 Apr 2012 12:43:51 -0400 From: Thomas Giddings Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: multipart/alternative; boundary=Apple-Mail-31-669143968 Subject: Re: [FlyRotary] Re: Fixed Pitch props. Date: Thu, 26 Apr 2012 12:43:49 -0400 In-Reply-To: To: "Rotary motors in aircraft" References: Message-Id: X-Mailer: Apple Mail (2.1084) X-ELNK-Trace: 77b0437ff618fec294f5150ab1c16ac07c540ca440b21de7ffe285ec68230f68716079df2842775a350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 173.163.220.153 --Apple-Mail-31-669143968 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 Actually I would prefer a wood/composite type of prop. I just got off = the phone with Craig Catto and he has agreed to look further into the = deal. He is really a smart guy. Nice to talk with also. Lots of = experience there. We will see what he comes back with. He did confirm my = thinking is correct about having excess power for take off and climb. = The idea is to over power the fixed pitch prop to get it spinning and = working. Once you reach those numbers all is good. I am hoping it can be = done. KIND REGARDS Thomas Giddings n360tg@earthlink.net 727 858 1772 On Apr 26, 2012, at 11:59 AM, Charlie England wrote: > They still make wood props, too, & they would almost certainly be able = to hit your RPM/HP/speed target if you can give them good numbers on the = HP & real world speed for your airframe. They were able to duplicate the = speed of a Bernie Warnke prop (very, very good prop) on an RV-4 I owned = about 10 years ago. >=20 > Charlie >=20 > On 04/26/2012 12:28 AM, William Jepson wrote: >>=20 >> Another possibility is Senessich (never could spell that), they have = a new ground adjustable prop. Carbon blades aluminum hub, which is = supposed to be designed around RV speed and HP. They are supposed to = offer a 2 and 3 blade option. Bill Jepson >>=20 >> On Apr 25, 2012 8:53 PM, "Michael McMahon" wrote: >> I=92ve been thinking along the same lines. The one person I=92ve = heard of often as a potential builder is Craig Catto, www.cattoprops.com = . Last time I looked his props were around $3,000, I think, but I have = no idea if that is current. There is also a new possibility, which is = to have the prop manufactured on a resin printer and then wrap it in = carbon fiber. I=92ve done a little research on that front and spoke to = a manufacturer last year at the CAF=C9 Electric Flight Symposium (this = weekend in Santa Rosa!) who confirmed that it=92s possible and is = already being done for military drones. >>=20 >> =20 >> Please post your findings! >>=20 >> =20 >> Thanks, >>=20 >> =20 >> Mike >>=20 >> =20 >>=20 >> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] = On Behalf Of Thomas Giddings >> Sent: Wednesday, April 25, 2012 6:57 PM >> To: Rotary motors in aircraft >> Subject: [FlyRotary] Fixed Pitch props. >>=20 >> =20 >> I am curious what you folks might recommend for a fixed pitch prop = builder for my project. I will have a lot of excess power and do not = think it would be as difficult to get an acceptable level of performance = with a lot less money and simplicity. Your thoughts >>=20 >> KIND REGARDS >>=20 >> Thomas Giddings >>=20 >> n360tg@earthlink.net >>=20 >> 727 858 1772 >>=20 >> =20 >> =20 >> =20 >=20 --Apple-Mail-31-669143968 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252
KIND = REGARDS
Thomas Giddings
72= 7 858 1772



On Apr 26, 2012, at 11:59 AM, Charlie England = wrote:

=20 =20
They still make wood props, too, & they would almost certainly be able to hit your RPM/HP/speed target if you can give them good numbers on the HP & real world speed for your airframe. They were able to duplicate the speed of a Bernie Warnke prop (very, very good prop) on an RV-4 I owned about 10 years ago.

Charlie

On 04/26/2012 12:28 AM, William Jepson wrote:

Another possibility is Senessich (never could spell = that), they have a new ground adjustable prop. Carbon blades aluminum hub, which is supposed to be designed around RV speed and HP. They are supposed to offer a 2 and 3 blade option. Bill Jepson

On Apr 25, 2012 8:53 PM, "Michael McMahon" <afm528@gmail.com> wrote:

I=92ve been thinking along the same lines.  The one = person I=92ve heard of often as a potential builder is Craig Catto, www.cattoprops.com .  Last time I looked his props were around = $3,000, I think, but I have no idea if that is current.  =  There is also a new possibility, which is to have the prop manufactured on a resin printer and then wrap it in carbon fiber.  I=92ve done a little research on = that front and spoke to a manufacturer last year at the CAF=C9 Electric Flight Symposium (this weekend in = Santa Rosa!) who confirmed that it=92s possible and is = already being done for military drones.

 

Please post your findings!

 

Thanks,

 

Mike

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Thomas Giddings
Sent: Wednesday, April 25, 2012 6:57 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Fixed Pitch = props.

 

I am curious what you folks might recommend for a fixed pitch prop builder for my project. I will have a lot of excess power and do not think it would be as difficult to get an acceptable level of performance with a lot less money and simplicity. Your thoughts

KIND REGARDS

Thomas Giddings

 
 
 


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