X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from elasmtp-mealy.atl.sa.earthlink.net ([209.86.89.69] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5510314 for flyrotary@lancaironline.net; Thu, 26 Apr 2012 13:08:38 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.69; envelope-from=n360tg@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=ZsfJNN/qOcB4GRiiaa+2G0lCWjcp9D+DBGvM8rArawRJG/Q7l8uj6XTirC7r28+C; 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-mealy.atl.sa.earthlink.net with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.67) (envelope-from ) id 1SNSAk-0002KW-S0 for flyrotary@lancaironline.net; Thu, 26 Apr 2012 13:08:03 -0400 From: Thomas Giddings Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: multipart/alternative; boundary=Apple-Mail-32-670596701 Subject: Re: [FlyRotary] Re: Fixed Pitch props. Date: Thu, 26 Apr 2012 13:08:02 -0400 In-Reply-To: To: "Rotary motors in aircraft" References: Message-Id: X-Mailer: Apple Mail (2.1084) X-ELNK-Trace: 77b0437ff618fec294f5150ab1c16ac07c540ca440b21de73975b3b80ea966bbbaf45b4663e9598c350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 173.163.220.153 --Apple-Mail-32-670596701 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 Dave: I watched with great interest your exploits at Reno last year. = Bravo!!...Well Done!!. I do plan to race in the sport class as well in = two years.Hopefully. The Details of my project are simple. I am nearing = completion of my Questair Venture Airframe. I have planned for some time = to power it with a home grown 20B( I have a virgin 20B for sale). That = has since progressed to a custom built motor and a bunch more power.I = believe it will be the only Rotary powered Venture in the world. I am = committed to getting it in the air. Wether or not in gets it's racing = stripes remains to be seen:) KIND REGARDS Thomas Giddings n360tg@earthlink.net 727 858 1772 On Apr 26, 2012, at 12:33 PM, David Leonard wrote: >=20 >=20 > On Thu, Apr 26, 2012 at 4:14 AM, Thomas Giddings = wrote: > Thanks for your info. I did contact Craig Catto and here is his = response: > =20 > Hello Tom, > That is going to be quite a challenge to fit. We make them for the = 540 Berkut, and that is about a 285mph aircraft and have done one for a = E-racer turbo 540 at 350HP doing over 300mph. > I do not think I want to challenge the auto conversion, just the power = curve many times seems hard to fit. We know the curve of the Lyc engine = very well and so not such a big deal to fit in these types of = applications. Easiest way for you to fit it is probably with a MT. > All the best, > Craig > =20 > I was surprised at his answer as i thought he did Tracy's prop. The = speed of the Venture will not be that much more then what he described. = It may be the high HP I will be using.Any more suggestions would be = appreciated. >=20 > KIND REGARDS > Thomas Giddings > n360tg@earthlink.net > 727 858 1772 >=20 >=20 >=20 > On Apr 26, 2012, at 1:28 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 >>=20 >> Please post your findings! >>=20 >> =20 >>=20 >> Thanks, >>=20 >> =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 >>=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 >> =20 >>=20 >=20 >=20 > Thomas, > I have a Catto prop and it work great for me. Raced it in Reno last = year, and use it for formation flying and cross country and aerobatics. = Great all around prop, and it was not even designed for my plane. Craig = designed it to go on a velosity and I picked it up second hand. What = are the details of your project? >=20 > Im sure that if you promised to hold Craig harmless on the outcome of = the prop he would be glad to make his best guess. >=20 >=20 >=20 > --=20 > David Leonard >=20 > Turbo Rotary RV-6 N4VY > http://N4VY.RotaryRoster.net > http://RotaryRoster.net --Apple-Mail-32-670596701 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252 Dave: = I watched with great interest your exploits at Reno last year. = Bravo!!...Well Done!!. I do plan to race in the sport class as well in = two years.Hopefully. The Details of my project are simple. I am nearing = completion of my Questair Venture Airframe. I have planned for some time = to power it with a home grown 20B( I have a virgin 20B for sale). That = has since progressed to a custom built motor and a bunch more power.I = believe it will be the only Rotary powered Venture in the world. I am = committed to getting it in the air. Wether or not in gets it's racing = stripes remains to be seen:)
KIND = REGARDS
Thomas Giddings
72= 7 858 1772



On Apr 26, 2012, at 12:33 PM, David Leonard = wrote:



On Thu, Apr 26, 2012 at 4:14 AM, Thomas Giddings = <n360tg@earthlink.net> wrote:
Thanks for your info. I did contact Craig = Catto and here is his response:
 
Hello Tom,
That is going to be quite a challenge to fit.   We make = them for the 540 Berkut, and that is about a 285mph aircraft and have = done one for a E-racer turbo 540 at 350HP doing over = 300mph.
I do not think I want to challenge the auto conversion, just the = power curve many times seems hard to fit. We know the curve of the Lyc = engine very well and so not such a big deal to fit in these types of = applications.  Easiest way for you to fit it is probably with a = MT.
All the best,
Craig
 
I was surprised at his answer as i thought he did Tracy's = prop. The speed of the Venture will not be that much more then what he = described. It may be the high HP I will be using.Any more suggestions = would be appreciated.

KIND REGARDS
Thomas Giddings



On Apr 26, 2012, at 1:28 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

 

 

 

=


Thom= as,
I have a Catto prop and it work great for me.  Raced it in Reno = last=20 year, and use it for formation flying and cross country and = aerobatics.  Great all around prop, and it was not even designed for my plane. =20= Craig designed it to go on a velosity and I picked it up second = hand. =20 What are the details of your project?

Im sure that if you promised to hold Craig harmless on the outcome of = the prop he would be glad to make his best guess.



--
David Leonard

Turbo Rotary RV-6 = N4VY
http://N4VY.RotaryRoster.nethttp://RotaryRoster.net

= --Apple-Mail-32-670596701--