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  #21  
Old 09-01-2018, 12:39 PM
Tom Martin Tom Martin is offline
 
Join Date: Jan 2005
Location: Ontario, Canada
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A RV8 is a nice looking airplane until you park it beside a Rocket.
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Tom Martin RV1 pilot 4.6hours!
CPL & IFR rated
EVO F1 Rocket 1000 hours,
2010 SARL Rocket 100 race, average speed of 238.6 knots/274.6mph
RV4, RV7, RV10, two HRIIs and five F1 Rockets
RV14 Tail dragger

Fairlea Field
St.Thomas, Ontario Canada, CYQS
fairleafield@gmail.com
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  #22  
Old 09-01-2018, 01:52 PM
Stroh21 Stroh21 is offline
 
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Location: Clovis, NM
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Thank you for the numbers analysis. I agree, getting an "accurate" speed assessment is the most difficult part when comparing aircraft.

I know this next question is opening a can of worms, but is there a appreciable speed difference between the F1 and the H2 rockets? Also, I know the F1 is a kit on it's own, but is the $10k difference worth the extra cost?
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RV-8A Owner
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  #23  
Old 09-01-2018, 02:02 PM
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Toobuilder Toobuilder is offline
 
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Location: Mojave
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Speed between the F-1 and HRII is based primarily on attention to the build. Again drawing from the "real world", the group of 6 Rockets that I run with (3 are F-1's and 3 are HRII's), 1 particular F-1 is the fastest, followed by a HRII a close second. Among the rest of us there's no practical difference. Some day if we can ever get all 6 of us airborne together we will do a balls out race to see who has bragging rights.
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WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.

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Harmon Rocket II -SDS EFI instalation in work
RV-8 - Flying
1940 Taylorcraft BL-65 -flying
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  #24  
Old 09-01-2018, 02:36 PM
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Alan Carroll Alan Carroll is offline
 
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Location: Madison, Wisconsin
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Quote:
Originally Posted by Toobuilder View Post
Data from my stable:

RV-8 165 KTAS @ 8.5 GPH (19.4 MPG)
Rocket 202 KTAS @ 11 GPH (18.3 MPG)

Though I dont go flat out very often, I have done some limited testing and the results are as follows:

Rv-8 178KTAS @ 17.5 GPH (10 MPG)
Rocket 220 KTAS @ 25 GPH (8.8 MPG)
Interesting comparison, thanks. I'm curious, what are the altitudes for these numbers?

I don't have anything to compare to the Rocket, but my RV-8 does more like 188 KTAS down low and wide open on a warm day, on a couple of GPH less (180 hp, carb, CS). I know others that beat me regularly in races. Anecdotal report!
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RV-8 N12AC
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  #25  
Old 09-01-2018, 06:46 PM
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Toobuilder Toobuilder is offline
 
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The lower speeds are my typical "economy" cruise and ~9000 MSL. Higher numbers were SL.
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WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.

Michael Robinson
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Harmon Rocket II -SDS EFI instalation in work
RV-8 - Flying
1940 Taylorcraft BL-65 -flying
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  #26  
Old 09-01-2018, 10:13 PM
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rocketbob rocketbob is offline
 
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At RV speeds a rocket will burn less fuel. Jim Winings and I used to fly a lot of cross country trips together. When we would stop and fill up he'd always be a few tenths of a gallon less than I would in my RV6.
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N55BC RV-6 borrowed, flying
N678X F1 Rocket, under const.
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  #27  
Old 09-02-2018, 09:58 AM
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Snowflake Snowflake is offline
 
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Quote:
Originally Posted by Toobuilder View Post
Some day if we can ever get all 6 of us airborne together we will do a balls out race to see who has bragging rights.
Won't that just add drag? :P
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  #28  
Old 09-02-2018, 10:10 AM
Stroh21 Stroh21 is offline
 
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Quote:
Originally Posted by Snowflake View Post
Won't that just add drag? :P
Now that is funny!
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  #29  
Old 09-02-2018, 10:23 AM
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Mike S Mike S is offline
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Quote:
Originally Posted by Snowflake View Post
Won't that just add drag? :P
But sure feels good on those hot summer days
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Rv-10, N210LM.

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  #30  
Old 09-02-2018, 02:17 PM
hohocc hohocc is offline
 
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Quote:
Originally Posted by Mike S View Post
But sure feels good on those hot summer days
Not if you go too fast and get flutter.
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