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  #281  
Old 09-21-2012, 08:12 AM
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Ironflight Ironflight is offline
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I also know of several flip-overs in the past year that haven't been reported here (I have seen them on the FAA daily reports, and sometimes from direct accounts from witnesses of incidents that were quickly wheeled into hangars and not reported).... so the forums are simply not a reliable data source for anything but anecdotal discussions.
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  #282  
Old 09-21-2012, 08:24 AM
diamond diamond is offline
 
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I'm curious how many RV-10 flip-overs do we know of ?
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  #283  
Old 09-21-2012, 08:46 AM
prkaye prkaye is offline
 
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Location: Ottawa, Ontario, Canada
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Default axle/bearing

I installed an upgraded matco axle to my nosegear a while back. The new axle goes right through the wheel and replaces those mushroom thingies. Is the aerosplat bearing upgrade equivalent to this or does it go farther?
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  #284  
Old 09-21-2012, 09:20 AM
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PerfTech PerfTech is offline
 
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Quote:
Originally Posted by prkaye View Post
I installed an upgraded matco axle to my nosegear a while back. The new axle goes right through the wheel and replaces those mushroom thingies. Is the aerosplat bearing upgrade equivalent to this or does it go farther?
....The Anti-Splat-Aero ball bearing upgrade uses three spacers that serve as stack-up parts, allowing you to tighten the axle up completely. There is no need to worry about preload on the bearings and they are double sealed, never needing service or maintenance of any kind. When we perform this modification, we precision balance the wheel separately. We then mount, true (if necessary) and balance the tire as most are off a considerable amount. These sealed bearings are permanently installed in the wheel and don't fall out on the ground when removing or changing the tire....Thanks, Allan
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  #285  
Old 09-21-2012, 09:26 AM
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rocketbob rocketbob is offline
 
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Quote:
Originally Posted by Ironflight View Post
I also know of several flip-overs in the past year that haven't been reported here (I have seen them on the FAA daily reports, and sometimes from direct accounts from witnesses of incidents that were quickly wheeled into hangars and not reported).... so the forums are simply not a reliable data source for anything but anecdotal discussions.
Since I started this thread two years ago there have been two more flip-over accidents within 20 miles from my home airport. One of them was a first x/c after the builder spent 15+ years building the airplane. Both on grass.

Folks thats seven flip over accidents I know of personally. Absolutely absurd that this has not been addressed by Van's. Fortunately the anti-splat mod does the trick.

If you don't have the anti-splat mod, you're crazy!!
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  #286  
Old 09-21-2012, 09:30 AM
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pierre smith pierre smith is offline
 
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Quote:
Originally Posted by diamond View Post
I'm curious how many RV-10 flip-overs do we know of ?
Mark, the -10's nosegear is hinged at the motor mount and in the past, has simply folded UP, in the one forced landing that happened after a fire broke out. There are several rubber doughnuts that provide the spring.

Best,
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Last edited by pierre smith : 09-21-2012 at 09:32 AM. Reason: sp
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  #287  
Old 09-21-2012, 09:44 AM
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apkp777 apkp777 is offline
 
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F.W.I.W. - I know of one RV-7A, that had the nose wheel fold under (did not flip) on a paved runway. He was an adamant "technique, technique, technique" guys. Now he's installed the anti-splat...Seems he has changed his tune. By the way, he had lot's of RV time and a skilled pilot.

Anyone who thinks this is not a design flaw is foolish. (IMO)
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  #288  
Old 09-21-2012, 09:50 AM
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Pmerems Pmerems is offline
 
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Location: Tucson, AZ
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Default Does it?

"Fortunately the anti-splat mod does the trick. If you don't have the anti-splat mod, you're crazy!!"

I must be crazy or I missed something? Where is the proof? Real world testing? Statistics? Show me the proof and I'm in. Allan has a very nice video on his site, but that isn't the proof it will prevent this from happening.

I transitioned trained with Mike Seager up in Oregon on a grass strip. Average condition for a grass strip. "A" models fly out of there all the time. No "A" model flip overs to my knowledge on this grass strip.

Every morning I look at the latest NTSB accident reports. What I find interesting is that a good percentage of accidents are nose gear collapses on many GA airplanes. An interesting statistic. Is it poor flying skills? Bad hardware? I don't know but maybe there is something in these statistics that is telling us something.

I agree with Allan that with the existing nose wheel bearing/fork design you can pinch the bearing and cause additional drag on the wheel. However a simple machined spacer inserted between the two factory spacers solves that problem.
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  #289  
Old 09-21-2012, 11:20 AM
868RM 868RM is offline
 
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Location: lena, il.
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Default nose wheel

About 3 yrs. ago I purchased a rv 8a kit in progress only to learn later about the "problem". I researched the options at that time & there was no anti splat. We then did a very complete analysis of strength of std. gear leg. Not much room for error & I make errors! I also fly 99.9% off grass fields. We then designed a stronger gear leg (about 30% stronger),modified the rv 10 fork to fit on new leg,put larger tires on mains and nose (used grove wheels & duel piston brakes),fitted grove nose wheel with ball brg.'s & spacer between brg.'s & added a fiberglass damper to back of the leg. The new leg is designed for the longer rv 10 fork & about 2 1/2 in. shorter to compensate for tire dia. This total change adds about 4 lbs. I have 150 plus grass landings with some not so pretty. Anyone that does not think there are any issues and does not do the brg. update and antisplat has NOT done any design calculations.Yes the stock is OK , but you are a much better pilot than me and have your front axle bolt at some perfect torque. Thanks Ron I always wear a helmet when I ride my motorbikes too.
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  #290  
Old 09-21-2012, 11:43 AM
N427EF N427EF is offline
 
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Default Confused?

I am confused, this is not unusual but 868RM,
what are you talking about?
An RV8A or an RV10 or what?
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