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  #1  
Old 10-07-2021, 03:35 PM
wirejock's Avatar
wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
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Default Skybolts

Has anyone installed Skybolt Cowl Fasteners on a 7A with the new A Model gear?
Im curious about spacing around the firewall.
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Larry Larson
Estes Park, CO
wirejock at yahoo dot com
Donated 01/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
Empennage, wings, fuse, finishing kit, now FWF
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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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  #2  
Old 10-07-2021, 05:51 PM
BillL BillL is online now
 
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Location: Central IL
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Default

I have not, but . . .

I don't know why the new gear would affect the top and sides of the spacing. Across the bottom use a screw not the SB for the inboard location next to the cowl exit. These two spots have higher loading than all the others. I had to remove them on my -7 as it was clear they allowed a lot of movement. The cowling is much happier now with #8 screws.
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  #3  
Old 10-07-2021, 06:49 PM
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wirejock wirejock is offline
 
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Location: Estes Park, CO
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Default Skybolts

Quote:
Originally Posted by BillL View Post
I have not, but . . .

I don't know why the new gear would affect the top and sides of the spacing. Across the bottom use a screw not the SB for the inboard location next to the cowl exit. These two spots have higher loading than all the others. I had to remove them on my -7 as it was clear they allowed a lot of movement. The cowling is much happier now with #8 screws.
Thanks
That helps.
Excuse my sense of humor but I was hoping for something like...
I spaced "X" number of Skybolts "X-inches" apart on the top, sides, bottom, because...
I placed the Skybolts "X-64s" from whatever because...
Do this around the "A" Model cowl opening...
Just looking for Gotchas befors I start boring holes.
I will look at the area mentioned for sure now.
Thanks again.
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Larry Larson
Estes Park, CO
wirejock at yahoo dot com
Donated 01/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
Empennage, wings, fuse, finishing kit, now FWF
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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  #4  
Old 10-07-2021, 07:30 PM
griffg griffg is offline
 
Join Date: Apr 2015
Location: Sydney, Australia
Posts: 42
Default Skybolts

The Skybolt brackets that you attach to the firewall overlap each other by nearly an inch and therefore provide a natural spacing between each one.

The maximum number of Skybolts you can place across the bottom of the firewall is three on each side due to the shape of the lower cowl. The shape of the lower cowl is driven by the exhaust pipes rather than the engine mount design.

The Exit Air Attach Brackets shown in Drawing 45 are impacted more by the change in engine mount design.

I hope this helps.

Cheers
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  #5  
Old 10-07-2021, 08:07 PM
rockwoodrv9 rockwoodrv9 is offline
 
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Location: Meridian ID, Aspen CO, Okemos MI
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Default Use AL circles to map out spacing

Hey Larry,
I went for style and even spacing from the joint line. I get a little pucker at the joint and wish I had gone as close as reasonably possible the the joint.

One thing I did was to get some aluminum tape and stamp out circles with a sharpened 1/2" copper coupling and tape them where I thought I wanted them to go. It helped visualize and get the spacing to look good - but I wish I was just a little closer on the spacing at the top-bottom joint line.
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  #6  
Old 10-07-2021, 08:31 PM
BillL BillL is online now
 
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One last thing - - pay attention when spacing the cowl splits on each side. One side is longer than the other. I did not use the Skybolt mounts on the bottom, I made a single piece, two SB, and one nut plate. They made good drill guides though.

Oh - -outline your intersection fairings, I located one under the edge and required some rework.

I made a center strip to attach the edge lip for a removable air exit device guide.
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Last edited by BillL : 10-07-2021 at 08:40 PM.
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  #7  
Old 10-08-2021, 08:15 AM
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wirejock wirejock is offline
 
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Default Skybolt advise

That helps a lot. Thanks Everyone. Keep the comments coming. Someone may search someday and this sort of stuff make everyone's job easier.
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Larry Larson
Estes Park, CO
wirejock at yahoo dot com
Donated 01/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
Empennage, wings, fuse, finishing kit, now FWF
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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  #8  
Old 10-08-2021, 01:10 PM
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Freakshow108 Freakshow108 is offline
 
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Location: Eatonville WA
Posts: 168
Default Skybolts

I did. Easy peasy. But start your layout at the two engine mount bolts. Use them as a reference to set the split line sky bolts on the horizontal seam. There is not enough space between the sky bolt fitting and the engine mount.
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  #9  
Old 10-08-2021, 09:36 PM
dreed dreed is offline
 
Join Date: Nov 2016
Location: Camas, WA
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Default

Larry- I have that set up. Can try and take pics and count tomorrow/measure.

skybolts on top cowl and down the seam between the top/bottom, but used piano hinge for the lower cowl to fuse intersections on the sides- super easy to get to once the top have was us pulled. . I do have the skybolts across the bottom underneath cowl to fuse too.
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  #10  
Old 10-11-2021, 09:52 AM
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wirejock wirejock is offline
 
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Location: Estes Park, CO
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Default Measurements and photos

Quote:
Originally Posted by dreed View Post
Larry- I have that set up. Can try and take pics and count tomorrow/measure.

skybolts on top cowl and down the seam between the top/bottom, but used piano hinge for the lower cowl to fuse intersections on the sides- super easy to get to once the top have was us pulled. . I do have the skybolts across the bottom underneath cowl to fuse too.
Dan
Any chance you had time to take measurements or photos?
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Larry Larson
Estes Park, CO
wirejock at yahoo dot com
Donated 01/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
Empennage, wings, fuse, finishing kit, now FWF
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.
Reply With Quote
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