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digidocs
Joined: 04 Dec 2013
Posts: 59
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 Posted: Tue Jan 03, 2017 10:02 am Post subject: Spacers to simulate prop for fitting cowling? |
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First of all, happy new year!
Has anyone successfully used spacers (in lieu of the propeller) to fit the cowling?
Vans has a note here that specifies the method:
http://vansaircraft.com/pdf/Prop_Cowl.pdf
Unfortunately, another builder says here that the lengths given above are incorrect!?!
http://www.azcloudflyer.com/finish22.html
I would very much appreciate your experience one way or the other on this. My father is coming down this afternoon to help out and I'd like to take advantage of his time, but really don't want to make a big mistake either.
David
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carl.froehlich(at)verizon
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| Posted: Tue Jan 03, 2017 11:37 am Post subject: Spacers to simulate prop for fitting cowling? |
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I used a Hartzell hub from an old prop for the cowl fit up (no blades). Even then I took a dozen measurement to make sure it was the same as the hub on the new prop. The prop to cowl spacing is such that I would not trust a “prop simulator”.
Ask around – someone might have a hub to use.
Carl
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of David Carr
Sent: Tuesday, January 03, 2017 1:02 PM
To: rv10-list(at)matronics.com
Subject: Spacers to simulate prop for fitting cowling?
First of all, happy new year!
Has anyone successfully used spacers (in lieu of the propeller) to fit the cowling?
Vans has a note here that specifies the method:
http://vansaircraft.com/pdf/Prop_Cowl.pdf
Unfortunately, another builder says here that the lengths given above are incorrect!?!
http://www.azcloudflyer.com/finish22.html
I would very much appreciate your experience one way or the other on this. My father is coming down this afternoon to help out and I'd like to take advantage of his time, but really don't want to make a big mistake either.
David
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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Kelly McMullen
Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ
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| Posted: Tue Jan 03, 2017 12:15 pm Post subject: Spacers to simulate prop for fitting cowling? |
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There are other variables that can screw you up. Spinner bulkheads and spinners have differing depth. My MT spinner is a good 3/8" behind the face of the bulkhead, so I had to rework the back of my cowling and adjust the rest of it as a result of moving cowling back 3/8".
While it is a chunk of money to have the prop and spinner on hand in time for cowling work, it is the only way you will get a reliable measurement.
-sent from the I-droid implanted in my forearm
On Tue, Jan 3, 2017 at 12:35 PM, Carl Froehlich <carl.froehlich(at)verizon.net (carl.froehlich(at)verizon.net)> wrote:
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
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flying-nut(at)cfl.rr.com
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| Posted: Tue Jan 03, 2017 2:04 pm Post subject: Spacers to simulate prop for fitting cowling? |
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I used the prop. This is not the time to get ahead of yourself. If the info you get isn't spot on then it won't look right. IMHO of course.
Sent from Samsung tablet cruising on the Oasis Of The Seas.
-------- Original message --------
From David Carr <junk(at)dcarr.org>
Date: 01/03/2017 1:01 PM (GMT-05:00)
To rv10-list(at)matronics.com
Subject RV10-List: Spacers to simulate prop for fitting cowling?
First of all, happy new year!
Has anyone successfully used spacers (in lieu of the propeller) to fit the cowling?
Vans has a note here that specifies the method:
http://vansaircraft.com/pdf/Prop_Cowl.pdf
Unfortunately, another builder says here that the lengths given above are incorrect!?!
http://www.azcloudflyer.com/finish22.html
I would very much appreciate your experience one way or the other on this. My father is coming down this afternoon to help out and I'd like to take advantage of his time, but really don't want to make a big mistake either.
David
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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digidocs
Joined: 04 Dec 2013
Posts: 59
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| Posted: Tue Jan 03, 2017 3:56 pm Post subject: Spacers to simulate prop for fitting cowling? |
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Thanks for the input, guys. I managed to get a scrapped hub from a nearby prop shop.
However, I've encountered one more snag---how long are the spacers that go between the hub and the spinner backplate? The plans say they're supplied with the prop and don't give a dimension. They're the ones indicated in red in the attached drawing.
Thanks,
David
On Tue, Jan 3, 2017 at 1:35 PM, Carl Froehlich <carl.froehlich(at)verizon.net (carl.froehlich(at)verizon.net)> wrote:
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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carl.froehlich(at)verizon
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| Posted: Tue Jan 03, 2017 4:59 pm Post subject: Spacers to simulate prop for fitting cowling? |
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Wait until you get the prop and use those spacers.
Carl
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of David Carr
Sent: Tuesday, January 03, 2017 6:55 PM
To: rv10-list(at)matronics.com
Subject: Re: Spacers to simulate prop for fitting cowling?
Thanks for the input, guys. I managed to get a scrapped hub from a nearby prop shop.
However, I've encountered one more snag---how long are the spacers that go between the hub and the spinner backplate? The plans say they're supplied with the prop and don't give a dimension. They're the ones indicated in red in the attached drawing.
Thanks,
David
On Tue, Jan 3, 2017 at 1:35 PM, Carl Froehlich <carl.froehlich(at)verizon.net (carl.froehlich(at)verizon.net)> wrote:
I used a Hartzell hub from an old prop for the cowl fit up (no blades). Even then I took a dozen measurement to make sure it was the same as the hub on the new prop. The prop to cowl spacing is such that I would not trust a “prop simulator”.
Ask around – someone might have a hub to use.
Carl
From: owner-rv10-list-server(at)matronics.com (owner-rv10-list-server(at)matronics.com) [mailto:owner-rv10-list-server(at)matronics.com (owner-rv10-list-server(at)matronics.com)] On Behalf Of David Carr
Sent: Tuesday, January 03, 2017 1:02 PM
To: rv10-list(at)matronics.com (rv10-list(at)matronics.com)
Subject: Spacers to simulate prop for fitting cowling?
First of all, happy new year!
Has anyone successfully used spacers (in lieu of the propeller) to fit the cowling?
Vans has a note here that specifies the method:
http://vansaircraft.com/pdf/Prop_Cowl.pdf
Unfortunately, another builder says here that the lengths given above are incorrect!?!
http://www.azcloudflyer.com/finish22.html
I would very much appreciate your experience one way or the other on this. My father is coming down this afternoon to help out and I'd like to take advantage of his time, but really don't want to make a big mistake either.
David
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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