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  #11  
Old 07-11-2014, 09:02 PM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,820
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Driftdown,

If you bought brand X why are you lurking on the VAF site?

Rich
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  #12  
Old 07-11-2014, 09:38 PM
rjtjrt rjtjrt is offline
 
Join Date: Mar 2006
Location: Australia
Posts: 775
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Well, I support Driftdowns right to be here, and to freely express his views.
No harm in what he said/wrote - for me, everyone has a right to a view on this and plenty of opinion either way.
I personally have had reservations, but in reality a lot of aircraft have tank in cabin, and i also trust Vans rengineering, despite my initial reservations. This doesn't make me right or wrong!

Last edited by rjtjrt : 07-11-2014 at 11:54 PM.
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  #13  
Old 07-11-2014, 10:10 PM
Driftdown Driftdown is offline
 
Join Date: Jan 2011
Location: Clearwater, Florida
Posts: 398
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Quote:
Originally Posted by RFSchaller View Post
Driftdown,

If you bought brand X why are you lurking on the VAF site?

Rich
Good question.
I have followed this site for years, especially while I was in the market for an LSA.

Besides this forum, I also follow 3 other similar sites, which target light sport aircraft and pilots, besides the Rotax and Dynon forums.

I have learned a great deal from all of them. I would like to think that I also have made contributions to them, with occasional posts regarding pertinent topics.

One thing that is common to 5 of the forums is . . . they have information on the Rotax 912 ULS engine and the experience owners have had with them.

Hope that satisfies anyone's curiosity on my participation.

Last edited by Driftdown : 07-11-2014 at 10:17 PM.
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  #14  
Old 07-12-2014, 05:10 AM
Tom Delaney Tom Delaney is offline
 
Join Date: Dec 2007
Location: St. Louis, MO
Posts: 151
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Driftdown,

Would you mind listing the other websites you follow?

Thanks,
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RV-10 - Purchased & flying
Magni M24 Gyroplane - Built - Sold
Magni M16 - Built & Flying - Sold
Magni M24 (Rotax 915) - Built & Flying
RV-12 - Built - Sold
Rotorway 162F Built - Sold
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  #15  
Old 07-12-2014, 05:51 AM
Tony Spicer Tony Spicer is offline
 
Join Date: Dec 2005
Location: Wilmington, NC
Posts: 517
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Quote:
Originally Posted by Top Cat View Post
When I did a demo with Mitch Lock in the RV12 I asked him about the fuel tank (position, rupturing on impact etc)?his response was that Vans tested it to over 30gs without it breaking.

.
OK, I'll bite. Exactly how would one test a tank to 30 g's in a crash configuration?

Tony
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  #16  
Old 07-12-2014, 07:30 AM
joertexas joertexas is offline
 
Join Date: Jul 2014
Location: San Antonio, Texas
Posts: 26
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Quote:
Originally Posted by Tony Spicer View Post
OK, I'll bite. Exactly how would one test a tank to 30 g's in a crash configuration?

Tony
1. Build a center section/fuselage/whole plane (as desired) with the tank installed.
2. Fill the tank to its normal capacity.
3. Lift the fuselage assembly with a crane or on a tower to a height sufficient to cause a 30g impact (I'm math-impaired, so the exact distance would have to be calculated by someone else).
4. Drop onto a solid surface.
5. Record results.
6. Repeat as desired for different crash scenarios - can even use a trapeze arrangement to impart forward motion.

JR
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  #17  
Old 07-12-2014, 09:17 AM
Top Cat Top Cat is offline
 
Join Date: May 2014
Location: Fort Mill SC
Posts: 333
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Quote:
Originally Posted by Top Cat View Post
When I did a demo with Mitch Lock in the RV12 I asked him about the fuel tank (position, rupturing on impact etc)?his response was that Vans tested it to over 30gs without it breaking.

Just adding this to the mix.

Let me correct my statement?the factory tests the fuel tank to 13gs not 30gs as I stated.

That being said, Mitch patiently answered every question I had about the fuel tank, it's position and strength etc along with a host of other questions and doubts. The end result was that I'm buying an RV12 SLSA.
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  #18  
Old 07-12-2014, 09:20 AM
Driftdown Driftdown is offline
 
Join Date: Jan 2011
Location: Clearwater, Florida
Posts: 398
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Quote:
Originally Posted by Tom Delaney View Post
Driftdown,

Would you mind listing the other websites you follow?

Thanks,
Will send you the links in a PM.......
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  #19  
Old 07-12-2014, 10:11 AM
rvbuilder2002's Avatar
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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Quote:
Originally Posted by Tony Spicer View Post
OK, I'll bite. Exactly how would one test a tank to 30 g's in a crash configuration?

Tony
Some of the tests are static (think of a fuel tank slowly filled with lead shot instead of fuel, with it mounted in the fuselage structure or something that accurately simulates it), and some of the tests are dynamic (think of tank filled with water and droped from a specific hight with it mounted in the fuselage structure or something that accurately simulates it, to induce hydro/dynamic loading, ).
As already mentioned, the testing was not to 30 G's ( I can't remember the specific values for all test modes so I will revert to Mitch's memory of 13 G's).

Because of 2 accidents, additional testing was done on a test fuselage, to destruction (as in, statically pulling the gear legs off of the fuselage in the same manner they had failed in accidents), to verify some additional failure modes that weren't tested for initially.
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Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
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  #20  
Old 07-12-2014, 11:25 AM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,820
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Drift down,

Yep I confess to hanging out on other type sites for info too!

Rich
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