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  #1  
Old 08-12-2019, 10:17 AM
Chippyjo Chippyjo is offline
 
Join Date: Aug 2019
Location: Uk
Posts: 2
Default RV8 spar lenght

Hi all, first post in advance of an RV8 build. Can someone give me the lenght of the wing spar? Currently building a small workshop where I would like to store the wings when built.
Thanks in advance.
Chippy
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  #2  
Old 08-12-2019, 11:05 AM
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N546RV N546RV is offline
 
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I don't know the exact length offhand but it's pretty close to the 10' mark. I can measure when I get home tonight if no one chimes in before them.
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  #3  
Old 08-12-2019, 11:31 AM
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fl-mike fl-mike is offline
 
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9' 7" overall finished length (includes end rib flanges). Does not include fiberglass wing tip.
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Last edited by fl-mike : 08-12-2019 at 02:40 PM.
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  #4  
Old 08-12-2019, 01:08 PM
Freemasm Freemasm is offline
 
Join Date: Nov 2017
Location: Orlando
Posts: 95
Default Help me, guys

I'm not building an 8 (long story but it involves RV4 wings) but I have a question, please. All of the Vans construction/drawings I've seen has a similar design philosophy; spars spliced together in a "box beam" type center section. So, my basic assumption would be the spar length is 1/2 the air frame span minus the wing tips (plus the ~ 1" of spar extension for construction). My assumption was you'd round to 23'/2 - ~8' (depending on wingtip), so just over 10.5 feet. Where's the missing length? What am I assuming wrong? Your knowledge is appreciated. My apologies to the OP for any thread hijack. Trying to get smarter here. Thanks
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  #5  
Old 08-12-2019, 01:38 PM
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longranger longranger is offline
 
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Location: 45G, Brighton, MI
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Quote:
Originally Posted by Freemasm View Post
I'm not building an 8 (long story but it involves RV4 wings) but I have a question, please. All of the Vans construction/drawings I've seen has a similar design philosophy; spars spliced together in a "box beam" type center section. So, my basic assumption would be the spar length is 1/2 the air frame span minus the wing tips (plus the ~ 1" of spar extension for construction). My assumption was you'd round to 23'/2 - ~8' (depending on wingtip), so just over 10.5 feet. Where's the missing length? What am I assuming wrong? Your knowledge is appreciated. My apologies to the OP for any thread hijack. Trying to get smarter here. Thanks
For RV-7,8,9,10, and 14, there is only a stub spar that bolts to a built up fuselage center section. Different from an RV-3,4,6. The stub spars on my -7 spars only go 5-1/4 inches inboard of the wing skin.
Stub spar:http://www.mykitlog.com/users/displa...=177353&row=16
Fuselage center section:http://www.mykitlog.com/users/displa...195585&row=155
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Last edited by longranger : 08-12-2019 at 01:41 PM.
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  #6  
Old 08-12-2019, 01:52 PM
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cdeerinck cdeerinck is offline
 
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Location: San Marcos, CA
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Default 12 feet

From wingtip to end of the control rod, just about 12' exactly.
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  #7  
Old 08-12-2019, 02:08 PM
Freemasm Freemasm is offline
 
Join Date: Nov 2017
Location: Orlando
Posts: 95
Default Thanks

Quote:
Originally Posted by longranger View Post
For RV-7,8,9,10, and 14, there is only a stub spar that bolts to a built up fuselage center section. Different from an RV-3,4,6. The stub spars on my -7 spars only go 5-1/4 inches inboard of the wing skin.
Stub spar:http://www.mykitlog.com/users/displa...=177353&row=16
Fuselage center section:http://www.mykitlog.com/users/displa...195585&row=155
Thank you, Sir. I've seen that stub spar type construction in Piper world. Not ready to say it's better than the spliced spare construction I incorrectly referenced but I trust Vans engineering. I'm sure it makes the construction easier. Thanks for sharing and getting me more knowledgeable.
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  #8  
Old 08-12-2019, 05:30 PM
Chippyjo Chippyjo is offline
 
Join Date: Aug 2019
Location: Uk
Posts: 2
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Thanks guys, I will make the correct size to suit. Now all us UK builders need is a better exchange rate :-(
Chippy
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