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  #11  
Old 06-13-2016, 03:12 PM
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Beagle Beagle is offline
 
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Quote:
Originally Posted by Bob Kuykendall View Post
If by "300Kmph" they mean 300kph, that's only 187 mph, meh.

If they mean 300 mph, well, that's a thing to give pause. I hope they've done their homework.
Back of the envelope physics tells me that max speed increases with the square root of the increase of the thrust so the 215hp spec makes me think think 300kph is correct.
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  #12  
Old 06-13-2016, 03:31 PM
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rv6ejguy rv6ejguy is offline
 
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These are the same folks who created the 1000SHP Legend which cleaned up at the Air Venture Cup race. http://www.airventurecuprace.com/rac...-race-results/

215hp at 25,000 feet might get you close to 300mph TAS- if you can cool it.

I saw this airplane in the flesh about a month ago. Pretty cool project.
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Last edited by rv6ejguy : 06-13-2016 at 03:57 PM.
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  #13  
Old 06-13-2016, 04:26 PM
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Bob Kuykendall Bob Kuykendall is offline
 
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Quote:
Originally Posted by rv6ejguy View Post
...215hp at 25,000 feet might get you close to 300mph TAS- if you can cool it...
And if you can keep it from fluttering.
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  #14  
Old 06-14-2016, 09:38 AM
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flyboykelly flyboykelly is offline
 
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Quote:
Originally Posted by Bob Kuykendall View Post
And if you can keep it from fluttering.
Bingo!!!!!
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  #15  
Old 06-14-2016, 12:12 PM
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flyeyes flyeyes is offline
 
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Quote:
Originally Posted by Bob Kuykendall View Post
If by "300Kmph" they mean 300kph, that's only 187 mph, meh.

If they mean 300 mph, well, that's a thing to give pause. I hope they've done their homework.
On the other hand, if they really mean 300Kmph, that's very impressive.

I seem to recall the SR71 set a transcontinental speed record from LA to D.C. in roughly an hour which is pretty impressive.

At 300kmph the trip would take just under 28 seconds. In calm winds.
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  #16  
Old 08-01-2016, 07:43 AM
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Talking Delta V = cube root(HP)

Quote:
Originally Posted by Beagle View Post
Back of the envelope physics tells me that max speed increases with the square root of the increase of the thrust so the 215hp spec makes me think think 300kph is correct.
You are right about that. Speed increase is square root of thrust increase, so it is the cube root of HP increase. So, adding HP is an expensive way to increase speed. But, it can be impressive.
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  #17  
Old 06-01-2017, 05:43 PM
foxhound57 foxhound57 is offline
 
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Default Images of the RV8S

After full flight testing and receiving its COA from Transport Canada the aircraft was shipped to Hervey Bay Australia and is currently completing its CASA COA.

Last edited by foxhound57 : 06-03-2017 at 12:12 AM.
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  #18  
Old 06-01-2017, 05:48 PM
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Quite the inboard landing light location.
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  #19  
Old 06-01-2017, 07:07 PM
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Default Shreck just might have been right

Quote:
Originally Posted by DaleB View Post
I normally try not to ask why someone would build a plane the way they did. In this case it's kind of tough. You still have a 160-kt two-seat tandem (apparently), it's just longer and heavier and has a bigger engine. More fuel for transoceanic flights? More room for a really tall person?

I'd love to hear what would motivate someone to go to the enormous time and expense it must have taken to build this. I'm sure there's an interesting story there.
To quote Shreck ... the hollywoood Shreck that is, " Do you suppose he might be trying to compensate for something?"

Maybe he flew Corsair's or Spitfires and missed not seeing the runway.

All in good humor. In reality that had to be a lot of work, time and money.

It should get above 20,000 Feet very quickly, as long as it does not freeze over a fuel tank vent.

Last edited by F1R : 06-02-2017 at 11:01 AM.
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  #20  
Old 06-01-2017, 07:18 PM
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Bubblehead Bubblehead is offline
 
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It looks like there are two baggage doors up front. The front cockpit looks to be normal sized so he did not stretch it to get more room in front. Vents on the side of the cowl sort of like Bonanzas. Throttle on wrong side but to each their own.

It would be great to get the builder on the forum to tell us about it.
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