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  #21  
Old 01-28-2011, 11:14 AM
szicree szicree is offline
 
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What's it weigh? Does it reduce TBO?
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  #22  
Old 01-28-2011, 11:34 AM
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rv6ejguy rv6ejguy is offline
 
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Absolutely you can do nitrous successfully if you do your homework. There are tens of thousands of systems operating on cars very reliably. The weight penalty will be 15+ pounds depending on tank size (and you have to refill it once in a while).

I would not expect a 25 shot to reduce TBO measurably if used for 30 seconds during takeoff and initial climb, assuming the AFR is kept in a safe range.
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  #23  
Old 01-28-2011, 11:41 AM
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eric_marsh eric_marsh is offline
 
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It's easy to trash stuff it you go nuts with the nitrous. My guess is that you would probably be reasonably safe if you keep it conservative. The key words here are "guess" and "reasonably".

On big bore fuel injected sports bikes we routinely and safely ran a 40 hp "dry shot" nitrous system. They were called dry shots because no additional fuel was added. Well, that's not quite true. The fuel injection system would fatten up the mixture to compensate for the very cold air that it sensed. On an airplane you can control the mix so as long as you are able to compensate for the amount of nitrous you ought to be fine for short shots, such as takeoffs.

The problem is all of those "oughts." Unless you test in a controlled environment, i.e. a dyno how are you going to know? On a bike or a car if you scatter a motor with any luck you can just pull off the side of the track. Seems to me that the risks are greater in an airplane, especially on a takeoff and climb out.
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Last edited by eric_marsh : 01-28-2011 at 12:00 PM.
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  #24  
Old 01-28-2011, 12:19 PM
Scott DellAngelo Scott DellAngelo is offline
 
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Location: Illinois
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Quote:
Originally Posted by Kahuna View Post
I think its a great idea.
Make it happen!
Nah sayers are a dime a dozen.
If your motivated, you can do it.
If you are motivated you can do anything. I have lots of nitrous experience in cars, so I feel entitled to make a nitrous opinion. My opinion is to use nitrous only on items that have a small chance of killing you dead when you break crankshafts and things like that. Put a bigger motor, higher compression, bigger cam, etc....if you need more horsepower. Use nitrous on things you take down the quarter mile. For that, I say GAME ON.

I didn't read all the posts but someone mentioned the Flyin Tiger had it. That was done for setting records and stuff and how many times did he return to airport dead stick?
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  #25  
Old 01-28-2011, 01:35 PM
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rv6ejguy rv6ejguy is offline
 
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Quote:
Originally Posted by Scott DellAngelo View Post
I didn't read all the posts but someone mentioned the Flyin Tiger had it. That was done for setting records and stuff and how many times did he return to airport dead stick?
Lots.

They went to turbocharging to break most of the time to climb and altitude records.
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Turbo Subaru EJ22, SDS EFI, Marcotte M-300, IVO, Shorai- RV6A C-GVZX flying from CYBW since 2003- 441.0 hrs. on the Hobbs,
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  #26  
Old 01-28-2011, 02:10 PM
Danny7 Danny7 is offline
 
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Location: central oregon
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Quote:
Originally Posted by Scott DellAngelo View Post

I didn't read all the posts but someone mentioned the Flyin Tiger had it. That was done for setting records and stuff and how many times did he return to airport dead stick?
he returned to the airport dead stick after almost every time he dropped his wife off (but that was in his cub, not the tiger)....


explanation post
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Last edited by Danny7 : 01-28-2011 at 02:22 PM.
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  #27  
Old 01-28-2011, 06:31 PM
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rv6ejguy rv6ejguy is offline
 
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I think they had at least two dead stick landings with the Tiger, one bad engine failure with the nitrous and one where the tanks vents froze at very high altitude. There may have been other egine problems which we didn't read about as those are something the engine sponsors might not want people to see.

A most impressive result with numerous records. Maybe someone who worked on the project could post more details?
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Turbo Subaru EJ22, SDS EFI, Marcotte M-300, IVO, Shorai- RV6A C-GVZX flying from CYBW since 2003- 441.0 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi2.htm


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  #28  
Old 01-29-2011, 05:26 PM
mike in phx mike in phx is offline
 
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Default there is one thing to say

turbo 30' at any airport is works really well
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  #29  
Old 01-29-2011, 07:49 PM
ron sterba ron sterba is offline
 
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Location: salem Oregon
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You could just install a 180 hp Turbine. I think somebody is putting in a turbine in a 8 down in texas so i am told. Anybody know the guy?

ron in Oregon
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  #30  
Old 01-29-2011, 08:19 PM
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N200PF N200PF is offline
 
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This is what the spirit of our category of airplane is all about: Innovation. I would likely not have a use for it but this is how we all learn and expand our capabilities.

I say go for it!

...remember when people thought it was crazy to put an EFIS in your plane? Who were the ones that drove that? Experimental builders.

- Peter
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Last edited by N200PF : 01-30-2011 at 12:31 AM.
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