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08-27-2020, 03:11 PM
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Join Date: May 2013
Location: Sherman, CT
Posts: 790
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Quote:
Originally Posted by Larco
IIRC The RV-6 had the J bar stiffener go all the way to the rear bulkhead where the 7/8/9 stopped at the more forward bulkhead. Istalling this stiffener is of course a good idea but I am considering using universal rivets because I doubt it's is possible to get good crisp dimples installed in that area after the build. And perhaps they will cause less damage to the paint?? Dimpling a painted piece of metal always seemed to cause damage to the paint beyond minor touch up??
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Larry, I did the mod today, the dimensions Van's has are right on. My QB -7 fuselage has the J stringers to the rear bulkhead. Bottom rivet is tough to buck, so I used a MK-319BS
__________________
Jake
RV6 #20477 completed 1991 sold.
RV7 #72018 N767T first flight 11/21/2017 350+ hrs.
IO-360M1B MT 3 blade, Dual AFS 5600 QUICK Panel.
Manual Flaps. (KOXC)Oxford, CT, (0NY0)North Creek, NY.
1941 J3 Cub skis,floats.
2020 dues gladly paid.
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08-27-2020, 03:58 PM
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Join Date: Jul 2010
Location: NSW Australia
Posts: 298
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I assume you could replace all rivets with the correct cherry max.
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Pete
RV-9 "Cloud tinnie"
Registered VH-EAB
Flying Phase 2
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08-27-2020, 05:12 PM
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Join Date: Mar 2005
Location: DVT Phoenix
Posts: 1,187
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Quote:
Originally Posted by Jpm757
Larry, I did the mod today, the dimensions Van's has are right on. My QB -7 fuselage has the J stringers to the rear bulkhead. Bottom rivet is tough to buck, so I used a MK-319BS
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Attached are the 2 pics. One of the 6 with the J stringer going all the way to the rear bulkhead and the 7 where it stops at the more forward bulkhead
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Larry
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08-28-2020, 09:59 PM
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Join Date: Jul 2013
Location: Clarkston, MI
Posts: 659
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I ordered my pair today. I'm fortunate that I'll be able to get them installed before final paint. It will be interesting to see what the final cost will be. Delivery snafus being pervasive through any chosen company, I opted for UPS 3 Day Delivery. The pair of part sets came to less than $10; I'm betting delivery is more than twice that... but I want them to show up without lingering in some distribution warehouse for a month so I'm hoping it's worth the price.
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08-29-2020, 05:52 AM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,762
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Quote:
Originally Posted by Larco
IIRC I am considering using universal rivets because I doubt it's is possible to get good crisp dimples installed in that area after the build.
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Pop-Rivet Dimpler!
__________________
Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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08-29-2020, 06:26 AM
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Join Date: May 2013
Location: Sherman, CT
Posts: 790
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__________________
Jake
RV6 #20477 completed 1991 sold.
RV7 #72018 N767T first flight 11/21/2017 350+ hrs.
IO-360M1B MT 3 blade, Dual AFS 5600 QUICK Panel.
Manual Flaps. (KOXC)Oxford, CT, (0NY0)North Creek, NY.
1941 J3 Cub skis,floats.
2020 dues gladly paid.
Last edited by Jpm757 : 08-29-2020 at 12:13 PM.
Reason: Ad
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08-29-2020, 07:23 AM
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Join Date: Jan 2019
Location: Vaca Moo Airport - TA37 in East TEXAS
Posts: 1,332
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Quote:
Originally Posted by Jpm757
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Are those ordered from Van's or did you make your own?
__________________
RV-8 N52VM: OnSpeed Gen2 AOA-3D, Dynon D-180, Autopilot, Titan 0-360A1A, Hartzell C/S, INS-429 IFR & GPS496, WingX & Stratux for backup & ADS-B IN. Enjoying life while building an airpark with FREE campsite for pilots www.facebook.com/VacaMooAirport/
Exempt by 3 out of the 10 ways but I still donated.
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08-29-2020, 07:31 AM
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Join Date: May 2013
Location: Sherman, CT
Posts: 790
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Quote:
Originally Posted by Pilot135pd
Are those ordered from Van's or did you make your own?
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I ordered a set from Van's, then decided to make my own. The top 4 rivets can be bucked, and with a specialty bucking bar you could probably get the bottom one. I chose a MK319BS blind rivet for the lower fastener.
__________________
Jake
RV6 #20477 completed 1991 sold.
RV7 #72018 N767T first flight 11/21/2017 350+ hrs.
IO-360M1B MT 3 blade, Dual AFS 5600 QUICK Panel.
Manual Flaps. (KOXC)Oxford, CT, (0NY0)North Creek, NY.
1941 J3 Cub skis,floats.
2020 dues gladly paid.
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08-29-2020, 09:44 AM
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Join Date: Nov 2007
Location: Paris ( France )
Posts: 38
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Retrofit of stiffener
Hi all,
I had this tailcone skin deformation occur about four years ago on my RV7. At the time I couldn't remember any specific incident that would have caused it. When I contacted Vans, having sent them some photos, they suggested that I might install a reinforcement in that area but they gave me no specific details of how to go about that. So I left things as the were and now 200 plus hours later the skin deformation hasn't evolved/ increased.
Now the question is, is it advisable to install the stiffener on an already deformed skin which will require me to "flatten" the slightly deformed skin and so possibly create stress concentrations around the surrounding rivets and structure.
Any advice would be much appreciated.
Sorry but I don't know how to attach a photo.
Mike
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08-29-2020, 09:47 AM
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Join Date: Jan 2019
Location: Vaca Moo Airport - TA37 in East TEXAS
Posts: 1,332
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Quote:
Originally Posted by tullow
Hi all,
I had this tailcone skin deformation occur about four years ago on my RV7. At the time I couldn't remember any specific incident that would have caused it. When I contacted Vans, having sent them some photos, they suggested that I might install a reinforcement in that area but they gave me no specific details of how to go about that. So I left things as the were and now 200 plus hours later the skin deformation hasn't evolved/ increased.
Now the question is, is it advisable to install the stiffener on an already deformed skin which will require me to "flatten" the slightly deformed skin and so possibly create stress concentrations around the surrounding rivets and structure.
Any advice would be much appreciated.
Sorry but I don't know how to attach a photo.
Mike
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Email me the pictures Mike and I'll post them here for you because I'm sure it'll be easier for the gurus here to tell you if they can see it. Pilot135pd at hotmail
__________________
RV-8 N52VM: OnSpeed Gen2 AOA-3D, Dynon D-180, Autopilot, Titan 0-360A1A, Hartzell C/S, INS-429 IFR & GPS496, WingX & Stratux for backup & ADS-B IN. Enjoying life while building an airpark with FREE campsite for pilots www.facebook.com/VacaMooAirport/
Exempt by 3 out of the 10 ways but I still donated.
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