Re: PT-23 Shimmy

ozzie@arearealestate.com · Mon Jul 08, 2019 8:04 am

'
I know this has been answered many times. After setting the tail wheel down. violent shimmy. We have rebuilt with bushings. Please point me to previous suggestions '

William · Post by **William** » Mon Jul 08, 2019 10:11 am

' Tighten cables.

Get Outlook for Android
From: fairchildclub@yahoogroups.com on behalf of ozzie@arearealestate.com [fairchildclub]
Sent: Monday, July 8, 2019 9:03:50 AM
To: fairchildclub@yahoogroups.com
Subject: [fairchildclub] PT-23 Shimmy

I know this has been answered many times. After setting the tail wheel down. violent shimmy. We have rebuilt with bushings. Please point me to previous suggestions
'

Ozzie Carrerou · Post by **Ozzie Carrerou** » Mon Jul 08, 2019 10:24 am

'Thanks I will try that next Oswald P. Carrerou, SRAPresidentState Certified General Appraiser RZ 271State Certified General Contractor CGC #1511393 AREA Real Estate Appraisers, Inc1136 First Street SouthWinter Haven, FL 33880Phone (863) 294-2384Fax (863) 297-9781ozzie@arearealestate.com Confidentiality Notice: This email message, including any attachments, contains information of A.R.E.A. Real Estate Appraisers that may be confidential or legally priviledged and is intended solely for the use of the individual or entity named on this message. If you are not the intended recipient, nor the employee or agent responsible for delivering it to the intended recipient, you are hereby notified that any use, disclosure, or distribution of this email is prohibited. If you have received this email in error, please contact the sender by email, fax, or telephone and destroy all paper and electronic copies of the original message. Thank You. A.R.E.A, INC. From: fairchildclub@yahoogroups.com
Sent: Monday, July 8, 2019 12:11 PM
To: fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] PT-23 Shimmy   Tighten cables.Get Outlook for Android From: fairchildclub@yahoogroups.com on behalf of ozzie@arearealestate.com [fairchildclub]
Sent: Monday, July 8, 2019 9:03:50 AM
To: fairchildclub@yahoogroups.com
Subject: [fairchildclub] PT-23 Shimmy
I know this has been answered many times. After setting the tail wheel down. violent shimmy. We have rebuilt with bushings. Please point me to previous suggestions   '

robert Etter · Post by **robert Etter** » Mon Jul 08, 2019 10:27 am

' To tell you the truth, I don't know of a fix. My only guess is that somewhere down the line that you had someone put the fork from a F-24 on your tail wheel strut. I really don't know of a 24 that hasn't had a shimmy problem. One possible cure that I know of, is to not lubricate the bottom of the strut. Keep it dry, which would add friction to the bottom end. That is what my 24's previous owner did. But of your motor leaks a fair amount of oil, that may be hard to do. You also have an oval tire? That won't help the problem. I have a bit of film footage, from 40 years ago, and it was a local Iowa guy landing on grass. His tail wheel was swinging at least 60 deg. from side to side. He had an oval profile tire. I did use a square shoulder tire on my 24, and it worked well. I don't know what kind of a problem that would cause on a Pt. The only guess that I would have is to put friction in the collar at the bottom of the strut. Another thing that I heard from many years ago, was the owner increase the angle of the fork. Just thinking about that gave me a headache. You can do much of anything with the fork casting, but he may have done something with the bottom end of the strut. Bottom line, I think that most will say that is the nature of the beast...…..Just live with it.
Boy.... I am a lot of help. The last PT that I was in didn't have working brakes, the tail wheel strut was complete worn out. The top end moved but the bottom didn't. That PT was completely reworked and is back flying this spring. Within a year after my ride, it made a forced landing on a highway and it was force off the ride by an oncoming driver. the Right main strut bottom end failed and tore up and across the center section. The cause for that was Magneto issues.
Good Luck. I would send a photo of my project, but it would only get scrambled
Bob

On ?Monday?, ?July? ?8?, ?2019? ?07?:?04?:?06? ?AM? ?PDT, ozzie@arearealestate.com [fairchildclub] wrote:

I know this has been answered many times. After setting the tail wheel down. violent shimmy. We have rebuilt with bushings. 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Ozzie Carrerou · Post by **Ozzie Carrerou** » Mon Jul 08, 2019 12:14 pm

'Thank you Oswald P. Carrerou, SRAPresidentState Certified General Appraiser RZ 271State Certified General Contractor CGC #1511393 AREA Real Estate Appraisers, Inc1136 First Street SouthWinter Haven, FL 33880Phone (863) 294-2384Fax (863) 297-9781ozzie@arearealestate.com Confidentiality Notice: This email message, including any attachments, contains information of A.R.E.A. Real Estate Appraisers that may be confidential or legally priviledged and is intended solely for the use of the individual or entity named on this message. If you are not the intended recipient, nor the employee or agent responsible for delivering it to the intended recipient, you are hereby notified that any use, disclosure, or distribution of this email is prohibited. If you have received this email in error, please contact the sender by email, fax, or telephone and destroy all paper and electronic copies of the original message. Thank You. A.R.E.A, INC. From: fairchildclub@yahoogroups.com
Sent: Monday, July 8, 2019 12:28 PM
To: ozzie@arearealestate.com [fairchildclub]
Subject: Re: [fairchildclub] PT-23 Shimmy To tell you the truth, I don't know of a fix. My only guess is that somewhere down the line that you had someone put the fork from a F-24 on your tail wheel strut. I really don't know of a 24 that hasn't had a shimmy problem. One possible cure that I know of, is to not lubricate the bottom of the strut. Keep it dry, which would add friction to the bottom end. That is what my 24's previous owner did. But of your motor leaks a fair amount of oil, that may be hard to do. You also have an oval tire? That won't help the problem. I have a bit of film footage, from 40 years ago, and it was a local Iowa guy landing on grass. His tail wheel was swinging at least 60 deg. from side to side. He had an oval profile tire. I did use a square shoulder tire on my 24, and it worked well. I don't know what kind of a problem that would cause on a Pt. The only guess that I would have is to put friction in the collar at the bottom of the strut. Another thing that I heard from many years ago, was the owner increase the angle of the fork. Just thinking about that gave me a headache. You can do much of anything with the fork casting, but he may have done something with the bottom end of the strut. Bottom line, I think that most will say that is the nature of the beast...…..Just live with it. Boy.... I am a lot of help. The last PT that I was in didn't have working brakes, the tail wheel strut was complete worn out. The top end moved but the bottom didn't. That PT was completely reworked and is back flying this spring. Within a year after my ride, it made a forced landing on a highway and it was force off the ride by an oncoming driver. the Right main strut bottom end failed and tore up and across the center section. The cause for that was Magneto issues. Good Luck. I would send a photo of my project, but it would only get scrambled Bob On ?Monday?, ?July? ?8?, ?2019? ?07?:?04?:?06? ?AM? ?PDT, ozzie@arearealestate.com [fairchildclub] wrote:
I know this has been answered many times. After setting the tail wheel down. violent shimmy. We have rebuilt with bushings. Please point me to previous suggestions '

Ranchaero Wing Shop · Mon Jul 08, 2019 12:49 pm

' I have helped tail wheel shimmy in other tail wheel aircraft by tightening steering wires/springs and lowering tire inflation pressure slightly.
David

On 7/8/19 11:14 AM, Ozzie Carrerou ozzie@arearealestate.com [fairchildclub] wrote:

Thank you Oswald P. Carrerou, SRA President State Certified General Appraiser RZ 271 State Certified General Contractor CGC #1511393 AREA Real Estate Appraisers, Inc 1136 First Street South Winter Haven, FL 33880 Phone (863) 294-2384 Fax (863) 297-9781 ozzie@arearealestate.com Confidentiality Notice: This email message, including any attachments, contains information of A.R.E.A. Real Estate Appraisers that may be confidential or legally priviledged and is intended solely for the use of the individual or entity named on this message. If you are not the intended recipient, nor the employee or agent responsible for delivering it to the intended recipient, you are hereby notified that any use, disclosure, or distribution of this email is prohibited. If you have received this email in error, please contact the sender by email, fax, or telephone and destroy all paper and electronic copies of the original message. Thank You. A.R.E.A, INC. From: fairchildclub@yahoogroups.com
Sent: Monday, July 8, 2019 12:28 PM
To: ozzie@arearealestate.com [fairchildclub]
Subject: Re: [fairchildclub] PT-23 Shimmy To tell you the truth, I don't know of a fix. My only guess is that somewhere down the line that you had someone put the fork from a F-24 on your tail wheel strut. I really don't know of a 24 that hasn't had a shimmy problem. One possible cure that I know of, is to not lubricate the bottom of the strut. Keep it dry, which would add friction to the bottom end. That is what my 24's previous owner did. But of your motor leaks a fair amount of oil, that may be hard to do. You also have an oval tire? That won't help the problem. I have a bit of film footage, from 40 years ago, and it was a local Iowa guy landing on grass. His tail wheel was swinging at least 60 deg. from side to side. He had an oval profile tire. I did use a square shoulder tire on my 24, and it worked well. I don't know what kind of a problem that would cause on a Pt. The only guess that I would have is to put friction in the collar at the bottom of the strut. Another thing that I heard from many years ago, was the owner increase the angle of the fork. Just thinking about that gave me a headache. You can do much of anything with the fork casting, but he may have done something with the bottom end of the strut. Bottom line, I think that most will say that is the nature of the beast...…..Just live with it. Boy.... I am a lot of help. The last PT that I was in didn't have working brakes, the tail wheel strut was complete worn out. The top end moved but the bottom didn't. That PT was completely reworked and is back flying this spring. Within a year after my ride, it made a forced landing on a highway and it was force off the ride by an oncoming driver. the Right main strut bottom end failed and tore up and across the center section. The cause for that was Magneto issues. Good Luck. I would send a photo of my project, but it would only get scrambled Bob On ?Monday?, ?July? ?8?, ?2019? ?07?:?04?:?06? ?AM? ?PDT, ozzie@arearealestate.com [fairchildclub] wrote:
I know this has been answered many times. After setting the tail wheel down. violent shimmy. We have rebuilt with bushings. Please point me to previous suggestions

'

Thomas Rood · Post by **Thomas Rood** » Mon Jul 08, 2019 1:32 pm

'Definitely check cable tension. Also check for anything bent back there, if the pivot axis is not tipped sufficiently aft at the top, it will shake violently (kind of like a defective shopping cart castor). Check this article. Interesting article on tailwheel shimmy - Backcountry Pilot Interesting article on tailwheel shimmy - Backcountry Pilot This interesting look at what actually causes tailwheel shimmy was written by Gilbert Pierce of Pierce Aero. Tail Wheel Shimmy I noticed when flying my Piper Clipper heavily loaded I experience tail wheel shimmy on my Scott 3200 when landing on a h
Yes, I realize it would take some doing to change the angle of the tail wheel on these airplanes, but you never know what they have been through in previous lives - of which these planes have had many...

Sent from Yahoo Mail on Android

On Mon, Jul 8, 2019 at 10:04, ozzie@arearealestate.com [fairchildclub] wrote:

I know this has been answered many times. After setting the tail wheel down. violent shimmy. We have rebuilt with bushings. Please point me to previous suggestions #ygrps-yiv-616522777 #ygrps-yiv-616522777yiv2714993700 #ygrps-yiv-616522777yiv2714993700 -- #ygrps-yiv-616522777yiv2714993700ygrp-mkp { border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0 10px;} #ygrps-yiv-616522777 #ygrps-yiv-616522777yiv2714993700 #ygrps-yiv-616522777yiv2714993700ygrp-mkp hr { border:1px solid #d8d8d8;} #ygrps-yiv-616522777 #ygrps-yiv-616522777yiv2714993700 #ygrps-yiv-616522777yiv2714993700ygrp-mkp #ygrps-yiv-616522777yiv2714993700hd { color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px 0;} #ygrps-yiv-616522777 #ygrps-yiv-616522777yiv2714993700 #ygrps-yiv-616522777yiv2714993700ygrp-mkp #ygrps-yiv-616522777yiv2714993700ads { margin-bottom:10px;} #ygrps-yiv-616522777 #ygrps-yiv-616522777yiv2714993700 #ygrps-yiv-616522777yiv2714993700ygrp-mkp .ygrps-yiv-616522777yiv2714993700ad { padding:0 0;} #ygrps-yiv-616522777 #ygrps-yiv-616522777yiv2714993700 #ygrps-yiv-616522777yiv2714993700ygrp-mkp 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'

Ozzie Carrerou · Post by **Ozzie Carrerou** » Mon Jul 08, 2019 1:54 pm

'Wow, great article. Thanks Oswald P. Carrerou, SRAPresidentState Certified General Appraiser RZ 271State Certified General Contractor CGC #1511393 AREA Real Estate Appraisers, Inc1136 First Street SouthWinter Haven, FL 33880Phone (863) 294-2384Fax (863) 297-9781ozzie@arearealestate.com Confidentiality Notice: This email message, including any attachments, contains information of A.R.E.A. Real Estate Appraisers that may be confidential or legally priviledged and is intended solely for the use of the individual or entity named on this message. If you are not the intended recipient, nor the employee or agent responsible for delivering it to the intended recipient, you are hereby notified that any use, disclosure, or distribution of this email is prohibited. If you have received this email in error, please contact the sender by email, fax, or telephone and destroy all paper and electronic copies of the original message. Thank You. A.R.E.A, INC. From: fairchildclub@yahoogroups.com
Sent: Monday, July 8, 2019 3:32 PM
To: fairchildclub@yahoogroups.com; fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] PT-23 Shimmy
Definitely check cable tension. Also check for anything bent back there, if the pivot axis is not tipped sufficiently aft at the top, it will shake violently (kind of like a defective shopping cart castor). Check this article. Interesting article on tailwheel shimmy - Backcountry PilotInteresting article on tailwheel shimmy - Backcountry PilotThis interesting look at what actually causes tailwheel shimmy was written by Gilbert Pierce of Pierce Aero. Tail Wheel Shimmy I noticed when flying my Piper Clipper heavily loaded I experience tail wheel shimmy on my Scott 3200 when landing on a h Yes, I realize it would take some doing to change the angle of the tail wheel on these airplanes, but you never know what they have been through in previous lives - of which these planes have had many...Sent from Yahoo Mail on Android

On Mon, Jul 8, 2019 at 10:04, ozzie@arearealestate.com [fairchildclub] wrote:
I know this has been answered many times. After setting the tail wheel down. violent shimmy. We have rebuilt with bushings. Please point me to previous suggestions

'

Richard Ellingworth · Post by **Richard Ellingworth** » Mon Jul 08, 2019 1:56 pm

'

Hi
I run my tyre pressure low as 25 psi, seems to solve it for me. If it does start it’s right at the end of the landing roll.
Cheers

Sent from my iPhone

On 8 Jul 2019, at 20:32, Thomas Rood tdrood@yahoo.com [fairchildclub] wrote:

Definitely check cable tension. Also check for anything bent back there, if the pivot axis is not tipped sufficiently aft at the top, it will shake violently (kind of like a defective shopping cart castor). Check this article. Interesting
article on tailwheel shimmy - Backcountry Pilot

Interesting article on tailwheel shimmy - Backcountry Pilot
This interesting look at what actually causes tailwheel shimmy was written by Gilbert Pierce of Pierce Aero. Tail Wheel Shimmy I noticed when flying my Piper Clipper heavily loaded I experience
tail wheel shimmy on my Scott 3200 when landing on a h

Yes, I realize it would take some doing to change the angle of the tail wheel on these airplanes, but you never know what they have been through in previous lives - of which these planes have had many...

Sent
from Yahoo Mail on Android

On Mon, Jul 8, 2019 at 10:04, ozzie@arearealestate.com [fairchildclub]
wrote:

I know this has been answered many times. After setting the tail wheel down. violent shimmy. We have rebuilt with bushings. Please point me to previous suggestions

'

Michael Denest · Post by **Michael Denest** » Mon Jul 08, 2019 2:03 pm

'There are no steering cables on the PT series aircraft. The problem is in the strut; most likely the splines are worn plus the yoke at the base of the strut may also be worn. Jack up the tail and remove the strut for inspection and repair. From: fairchildclub@yahoogroups.com [mailto:fairchildclub@yahoogroups.com]
Sent: Monday, July 8, 2019 3:32 PM
To: fairchildclub@yahoogroups.com; fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] PT-23 Shimmy
Definitely check cable tension. Also check for anything bent back there, if the pivot axis is not tipped sufficiently aft at the top, it will shake violently (kind of like a defective shopping cart castor). Check this article. Interesting article on tailwheel shimmy - Backcountry PilotInteresting article on tailwheel shimmy - Backcountry PilotThis interesting look at what actually causes tailwheel shimmy was written by Gilbert Pierce of Pierce Aero. Tail Wheel Shimmy I noticed when flying my Piper Clipper heavily loaded I experience tail wheel shimmy on my Scott 3200 when landing on a h Yes, I realize it would take some doing to change the angle of the tail wheel on these airplanes, but you never know what they have been through in previous lives - of which these planes have had many...Sent from Yahoo Mail on Android

On Mon, Jul 8, 2019 at 10:04, ozzie@arearealestate.com [fairchildclub] wrote:
I know this has been answered many times. After setting the tail wheel down. violent shimmy. We have rebuilt with bushings. Please point me to previous suggestions

'