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 REGARDSThomas Giddingsn360tg@earthlink.net727 858 1772 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’ve been thinking along the same lines. The one person I’ve 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’ve done a little research on that front and spoke to a manufacturer last year at the CAFÉ Electric Flight Symposium (this weekend in Santa Rosa!) who confirmed that it’s 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 PMTo: Rotary motors in aircraftSubject: [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 REGARDSThomas Giddings n360tg@earthlink.net 727 858 1772 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? 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 LeonardTurbo Rotary RV-6 N4VYhttp://N4VY.RotaryRoster.nethttp://RotaryRoster.net
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 REGARDSThomas Giddingsn360tg@earthlink.net727 858 1772 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’ve been thinking along the same lines. The one person I’ve 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’ve done a little research on that front and spoke to a manufacturer last year at the CAFÉ Electric Flight Symposium (this weekend in Santa Rosa!) who confirmed that it’s 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 PMTo: Rotary motors in aircraftSubject: [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 REGARDSThomas Giddings n360tg@earthlink.net 727 858 1772
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’ve been thinking along the same lines. The one person I’ve 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’ve done a little research on that front and spoke to a manufacturer last year at the CAFÉ Electric Flight Symposium (this weekend in Santa Rosa!) who confirmed that it’s 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 PMTo: Rotary motors in aircraftSubject: [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 REGARDSThomas Giddings n360tg@earthlink.net 727 858 1772
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
I’ve been thinking along the same lines. The one person I’ve 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’ve done a little research on that front and spoke to a manufacturer last year at the CAFÉ Electric Flight Symposium (this weekend in Santa Rosa!) who confirmed that it’s 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 PMTo: Rotary motors in aircraftSubject: [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 REGARDSThomas Giddings n360tg@earthlink.net 727 858 1772
I’ve been thinking along the same lines. The one person I’ve 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’ve done a little research on that front and spoke to a manufacturer last year at the CAFÉ Electric Flight Symposium (this weekend in Santa Rosa!) who confirmed that it’s 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 PMTo: Rotary motors in aircraftSubject: [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
n360tg@earthlink.net
727 858 1772