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O-100-- interesting new engine

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Daleandee

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Sep 11, 2015
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1,160
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SC
I will not be involved in any type racing where the airframe, engine, etc has to be the same. I race to win and do the best that I can do. If I can't do that, I walk away. It's the reason I quit drag racing when they went to bracket racing, why I don't give a flip about NASCAR .
Absolutely correct! Here we likes to say ... "Run what you brung!"

Dale Williams
N319WF @ 6J2
Myunn - "daughter of Cleanex"
120 HP - 3.0 Corvair
Tail Wheel - Center Stick
Signature Finish 2200 Paint Job
166.7 hours / Status - Flying
Member # 109 - Florida Sonex Association
 

BJC

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97FL, Florida, USA
Over coffee and homemade doughnuts this morning, I was discussing engines with a neighbor and former Vans Aircraft employee. After talking about two cylinder engines, including Pete’s new engine, he stumped me with the following question, which I now ask HBAers. What is an RV-5?

Turns out to be a design that has roots in lots of threads here: light weight, simple to build, designed to be trailored to and from the airport (the wing rotated about the X axis), low HP requirement, and a real airplane configuration with a high wing.

Apparently it was not to Dick’s liking, so it never was offered as a product.

It did make me wonder if the RV-5 design, updated somewhat, and equipped with Pete’s engine, might be a popular scratch built offering.

What do you think?


BJC
 

BJC

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Oct 7, 2013
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11,991
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97FL, Florida, USA
Over coffee and homemade doughnuts this morning, I was discussing engines with a neighbor and former Vans Aircraft employee. After talking about two cylinder engines, including Pete’s new engine, he stumped me with the following question, which I now ask HBAers. What is an RV-5?

Turns out to be a design that has roots in lots of threads here: light weight, simple to build, designed to be trailored to and from the airport (the wing rotated about the X axis), low HP requirement, and a real airplane configuration with a high wing.

Apparently it was not to Dick’s liking, so it never was offered as a product.

It did make me wonder if the RV-5 design, updated somewhat, and equipped with Pete’s engine, might be a popular scratch built offering.

What do you think?


BJC
 

Pete Plumb

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Oct 22, 2014
Messages
176
Location
SHAFTER, CA
Over coffee and homemade doughnuts this morning, I was discussing engines with a neighbor and former Vans Aircraft employee. After talking about two cylinder engines, including Pete’s new engine, he stumped me with the following question, which I now ask HBAers. What is an RV-5?

Turns out to be a design that has roots in lots of threads here: light weight, simple to build, designed to be trailored to and from the airport (the wing rotated about the X axis), low HP requirement, and a real airplane configuration with a high wing.

Apparently it was not to Dick’s liking, so it never was offered as a product.

It did make me wonder if the RV-5 design, updated somewhat, and equipped with Pete’s engine, might be a popular scratch built offering.

What do you think?


BJC
I think I would love to see it! I love Van's designs. Most versatile, nicest flying airplanes ever!
 

galapoola

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Jun 4, 2017
Messages
86
Location
NJ
(the wing rotated about the X axis)
BJC
BackYardFlyerUltralightSpecsPage.jpg

Back Yard Flyer scissor wing fold, fits in the ultralight space and with looks only a mother could love. Concept of a single piece wing is excellent but it would need to be nicer looking. This design's wing is out of proportion, too chunky for my taste.
 

TFF

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Apr 28, 2010
Messages
13,826
Location
Memphis, TN
I heard at one time the RV 5 was being restored. Of the pictures I have seen, its like a single seat Cygnet; more of a shoulder wing. It would be interesting to inspect it.
 

Pete Plumb

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Oct 22, 2014
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SHAFTER, CA
Well Folks, we have achieved two major milestones in the Pegasus DP-1 story.

First, we just flew through 50 hours on the tach in the Geissinger Cracker Jack, N205CJ. The engine has performed flawlessly without so much as a hiccup. The Zenith-Bendix 13859 Harley carb seems to be holding up fine although I'm really getting antsy to try fuel injection. 50 hours.jpg

The second milestone is that my son, Nick, got to live his life-long dream this weekend and flew the Cracker Jack. The kid grew up playing in the prototype when it was stored in our garage and has only seen pictures of it flying and dreamt of being behind the stick. Down from their home in Washington, and with Dad's confidence in the airplane and engine running high, Nick climbed in the cockpit and took her up for an hour flight over KMIT. Later, he shot a bunch of landings and just had fun. He made me so proud. It was as exciting for me to watch him fly it as it was for him. Nick Flies N205CJ sml.jpg
 

Pete Plumb

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Oct 22, 2014
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SHAFTER, CA
Just one of the little clips of Nick's flight in Cracker Jack N205CJ last weekend. I've been uploading more stuff to YouTube as well.

https://www.youtube.com/watch?v=-_GZY1d1cPc

Also the 50 hr screen pull:

https://www.youtube.com/watch?v=sjedbcIjexU

And a little tour of the the working end of the Cracker Jack after 50 hours - just uncowled. I skip around a bit, sorry. I need to slow down and finish my thoughts. :ponder:

https://www.youtube.com/watch?v=xUBmvu_440o&t=12s

Takeoff and climb:

https://www.youtube.com/watch?v=0DiqHjWL10c
 
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Topaz

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Orange County, California
Congratulations on the milestones, Pete! That's really great news, and you must be proud as punch to see your boy take the Cracker Jack up!

... carb seems to be holding up fine although I'm really getting antsy to try fuel injection. ...
I think Ross's EFI is going to be a really great match to the engine, and a great option, but please don't think about waiting for that to put the DP-1 on the market. The engine is already great the way it is, with a carb. More improvements can come later, and be sold as upgrades. Right now, my fondest hope for you is that you finish up your planned test program, set up your sales network, and start seeing some return on the many years of time and money you've invested, along with people enjoying your engine pulling them through the sky.

At some point, you just have to shoot the engineer and release to sales. ;)
 

Pete Plumb

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Oct 22, 2014
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176
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SHAFTER, CA
A quick addendum to the residual oil on the engine that was baffling me in the 50 hour inspection video. Actually, Nick reminded me that I cranked it up with the oil cap loose and it blew oil all over the place. How embarrassing! That's one thing about a twin opposed engine is that they try to displace all the air in the case every stroke so if you leave the cap off, 100 cubic inches of air blows out in a big huff! Can't go unnoticed. Anyway, that is probably the best explanation for where the oil on the engine came from. It really doesn't seem to be leaking anywhere.

Pete
 

Highplains

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Jun 2, 2014
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356
Location
Over the Rainbow in Kansas, USA
Me, too! It's sort of like a cross between an airplane and a Harley. How can you not like that? :)
I was thinking BMW R series boxer. Very easy to listen to.

I've looked everywhere for the specs on the Crackerjack. My Kitplanes collection started in late 1985, so I don't have that February 85 issue. But what is the area and weight?
 

Pete Plumb

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Oct 22, 2014
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SHAFTER, CA
I was thinking BMW R series boxer. Very easy to listen to.

I've looked everywhere for the specs on the Crackerjack. My Kitplanes collection started in late 1985, so I don't have that February 85 issue. But what is the area and weight?
Highplains, I'll post the original specs and the new specs when I get in tomorrow. What would be the best forum or thread to do that in? In the mean time, the original span was 28', chord 45", area 104, AR 7.46, length 18', weight of my prototype was 406 I think. The Geissinger Crackerjack is 443 empty and about 660 with me and full of fuel.
 

Victor Bravo

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Jul 30, 2014
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KWHP, Los Angeles CA, USA
And how many of THOSE people created both an airplane and an engine that BOTH performed well, safely, and represented a truly viable product that others would see as a high value in the market?

Pete's far too humble to say this so I am going to open up my gigantic mouth and say it for him... This development program puts him in some pretty impressive company. Aeronca did it, DeHavilland did it. How many other examples can the historians on HBA name, where a civilian aircraft and the engine for that aircraft were developed at the same place? Let's leave out the wartime emergencies (Junkers Jumo engines on Junkers airplanes, Bristol engines on Bristol Beaufighters, etc.)

For bonus points, how many of these results were from mostly the design and engineering efforts of one person? i.e. did Sir Geoffrey design and develop the aircraft and the Gipsy engines?

Like I said, Pete may actually be in a group of one or two people.
 
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