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  #11  
Old 05-19-2023, 08:14 PM
Tommy123 Tommy123 is offline
 
Join Date: Jul 2018
Location: Naples fl
Posts: 370
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Quote:
Originally Posted by wirejock View Post
No CherryMax in 3/32. You might ask Vans about going up to #4 and using a CherryMax.
I have a variety of home brew bars. I have a thin tungsten that fits almost everywhere. I often taped the heavy tungsten to it for extra mass.
The tight spots were done with a piece of steel thin enough to fit. Even a flat blade screwdriver will work. The heavy tungsten was taped to the steel bar as close to the impact point as possible. It adds the mass. Same problem with rivets near the roll bar if you have a slider.
There are no structural 3/32 Cherry Max rivets. 3/32 Cherry is NOT a Max and NOT structural.
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  #12  
Old 05-19-2023, 08:23 PM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
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Default CherryMax

Quote:
Originally Posted by Tommy123 View Post
There are no structural 3/32 Cherry Max rivets. 3/32 Cherry is NOT a Max and NOT structural.
Isn't that what I said?
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Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/2022, plus a little extra.
RV-7A #73391, N511RV reserved
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #13  
Old 05-19-2023, 08:43 PM
Tommy123 Tommy123 is offline
 
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Sorry. You were correct.
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  #14  
Old 05-19-2023, 09:01 PM
Stoo Stoo is offline
 
Join Date: May 2006
Location: LL10, Naperville, IL.
Posts: 117
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That row of rivets are 4's (1/8").
Stewart Willoughby,6
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  #15  
Old 05-19-2023, 09:17 PM
Desert Rat Desert Rat is offline
 
Join Date: Aug 2018
Location: Wichita KS
Posts: 1,268
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no, they are 3's until you get to the 1/2 dozen or so up by the firewall.

Here's a picture of the backside.

I'm just looking for a silver bullet and there probably isn't one. I'm going to ponder this for a while and see what sort of Rube Goldberg bucking bar I can come up with.
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Terry Shortt
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Avionics almost done
90% done, 90% to go
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  #16  
Old 05-19-2023, 09:29 PM
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PaulvS PaulvS is offline
 
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Location: Western Australia
Posts: 1,465
Default Bucking bar

Something like this bar might work, made from 3/8 thick structural steel angle.
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  #17  
Old 05-19-2023, 10:05 PM
PilotjohnS PilotjohnS is offline
 
Join Date: Jan 2016
Location: Southwest, USA
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Default yup

Quote:
Originally Posted by Desert Rat View Post
no, they are 3's until you get to the 1/2 dozen or so up by the firewall.

Here's a picture of the backside.

I'm just looking for a silver bullet and there probably isn't one. I'm going to ponder this for a while and see what sort of Rube Goldberg bucking bar I can come up with.
Yup, I used a chisel with the tungsten bar resting on the chisel a little below the deck. I taped the chisel and bar together so it was easier to hold them at the same time.
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WARNING! Information presented in this post is my opinion. All users of info have sole responsibility for determining accuracy or suitability for their use.

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  #18  
Old 05-20-2023, 09:08 AM
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wirejock wirejock is offline
 
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Location: Estes Park, CO
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Default Rube Goldberg

Quote:
Originally Posted by PilotjohnS View Post
Yup, I used a chisel with the tungsten bar resting on the chisel a little below the deck. I taped the chisel and bar together so it was easier to hold them at the same time.
It works! Been there, done that many times.
I have a thin tungsten bar. It's about 1/4" thick. Works great for those tight spots. No idea where I got it but I can look it up in my records. When I tape the big tungsten to it, it's really got some mass.
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Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/2022, plus a little extra.
RV-7A #73391, N511RV reserved
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #19  
Old 05-20-2023, 04:19 PM
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rv6n6r rv6n6r is online now
 
Join Date: May 2007
Location: Gearhart Oregon
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Mild steel 3/8" thick or so (I keep a few laying around for just this sort of thing). Backed up with a heavy bucking bar for mass.
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Randall Henderson
RV-6 / O-360 / CS, 1600+ hrs, 1st flight Sept. 1999
Outstanding Workmanship OSH 2000, Craftsmanship award AWO 2000
Airport committee chair & AOPA ASNV for Seaside, OR Municipal (56S), www.seasideairport.org
Last Donated December 2022
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  #20  
Old 05-20-2023, 04:22 PM
Desert Rat Desert Rat is offline
 
Join Date: Aug 2018
Location: Wichita KS
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Victory.

I looked at this again after sleeping on it and realized that the whole issue is that the aft lower edge of the forward canopy deck is in the way back there, and it's just a flange hanging in empty space.

Trimmed about 1/4" off it parallel to the longerons and suddenly I had enough room to get a 3/8" thick L shaped bucking bar in there.

Kudos to everybody who can stand on their head and use a screwdriver as a bucking bar, but I've tried stuff like that before and sad to say, thats a skill set thats hit or miss for me. this was eezy peeze.

Thanks for all the suggestions!
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Terry Shortt
AGI, CFI, CFII, MEI, A&P, Janitor
RV7 Empennage & Wing done
Fuselage almost done
Avionics almost done
90% done, 90% to go
#72651
https://eaabuilderslog.org/?blprojec...t=all&listcat=
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