• Welcome aboard HomebuiltAirplanes.com, your destination for connecting with a thriving community of more than 10,000 active members, all passionate about home-built aviation. Dive into our comprehensive repository of knowledge, exchange technical insights, arrange get-togethers, and trade aircrafts/parts with like-minded enthusiasts. Unearth a wide-ranging collection of general and kit plane aviation subjects, enriched with engaging imagery, in-depth technical manuals, and rare archives.

    For a nominal fee of $99.99/year or $12.99/month, you can immerse yourself in this dynamic community and unparalleled treasure-trove of aviation knowledge.

    Embark on your journey now!

    Click Here to Become a Premium Member and Experience Homebuilt Airplanes to the Fullest!

Search results

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
  1. H

    British air museums?

    I live on the godforsaken island you are asking about. Duxford is one of the highlights - I go a couple times a year - you can fly in just about any day of the year, and walk from the flightline into the museums. Everything curated topnotch, and you can walk inside/touch some of the exhibits...
  2. H

    Any way to make those so called aerobatic planes any safer ?

    There is nothing unsafe about an Extra. The Finnish accident is pure pilot error. You can't recover from a flat spin that low.
  3. H

    Any way to make those so called aerobatic planes any safer ?

    A fun thread to read, now let me stick my oar in. I see that there are some Pitts pilots and at least one Sukhoi pilot here. I have flown both the Pitts and Sukhoi at unlimited level, so I think I am well qualified to comment on these types of airplanes flown like this. There is nothing...
  4. H

    Deltahawk - Finally!

    There are already diesel conversion kits for some light aircraft (PA28, C172, etc.) available. Not cheap from what I understand. I am in the UK, where 100LL is expensive, and JET-A is a around US prices. Today, 100LL at my airport is about $10.75 per USG. JET-A is just over half that. One of...
  5. H

    Aircraft tubing system for crack monitoring

    FWIW, I know about cracking in Pitts and Sukhoi fuselages. I used to fly unlimited in the Pitts, later in the Sukhoi. I heard about the longerons cracking in the S2s, but never saw it. But what I did see in Pitts that were flown hard (there were 3 of us flying at that level at our airport)...
  6. H

    Red flags and vetting

    "estate sale no logbooks" About 30 years ago I was at an IAC contest and somebody I knew showed up with a new experimental Pitts. You can tell when somebody has put together a no-expense spared no-time spared airplane. I asked him where he got it. He said he saw an ad. "Estate sale. Homemade...
  7. H

    Spent the day at Duxford….not experimental, but worth the trip.

    I live on the god-forsaken island where Duxford is located. I go to Duxford a couple of times a year - by air. Airport is open to GA.
  8. H

    The Recreational Aviation Foundation

    How tall do you have to be not to fit into a normal Cessna? And what is a normal Cessna?
  9. H

    Raptor Composite Aircraft

    Briefly revisiting the topic of horsepower and ground roll....... If you look at the channel where the tower view of the raptors first flight was posted, you can see some other takeoffs on the same runway. Here is one of a Gulfstream.
  10. H

    Raptor Composite Aircraft

    The composite fuselage aircraft I have flown (and owned) had solid carbon fiber construction (no foam). Not only that: MT prop No Lycoming or Continental either. (Some sort of converted industrial unit with an aviation pressure carb and automatic mixture control. Used an aftermarket...
  11. H

    Raptor Composite Aircraft

    I just had a look at the latest video. This gives us a bit more information for the horsepower calculation. Look at the cockpit view starting at around 12 minutes At 12:09 he is rolling about 7kts and the engine is at full power. At 12:29 (20s) he is at 71kts At 12:39 (30s) he is at 90kts We...
  12. H

    Raptor Composite Aircraft

    Jet Guy: You may want to adjust your assumptions slightly. You should be able to run the numbers quickly. You assume because the Raptor needs 90kts to rotate then best ROC will be 110kts. I don't think ratio will hold in this case (but we dont have enough data to be accurate) In the case of...
  13. H

    Raptor Composite Aircraft

    I had a look at the new video - looks like 30s acceleration to 90kts - jetguy should be able to give us a reasonably accurate HP value from this.
  14. H

    Raptor Composite Aircraft

    Another datapoint on takeoff roll. I found a POH for a G1 SR22 online. SL ISA takeoff roll at 3400 (gross weight) with 50% flaps is 1020 feet @ 73Kts. This is about 11% less ground roll than the Saratoga at about the same weight with 25deg flaps. The SR22 will be going a bit faster (73kts), and...
  15. H

    Raptor Composite Aircraft

    I have been following this project since about Christmas. I ended up reading every post in this thread. Once you start, you can't stop! Today I ran an experiment which may give some more useful data to work out the horsepower. I have a Saratoga II HP in very good condition, with an engine that...
Back
Top