Record Hound (oz24)

 

Record Hound (oz24) by Henry Struck from Air Trails 1939 - plan thumbnail

About this Plan

Record Hound. Free flight gas model. From August 1939 Air Trails article. "The ship that won the 1939 NAA record during the winter with a three flight average of 5:41"

Quote: "CAREFULLY designed for high performance, easy servicing, and thorough protection of vital parts, this ship is ideal for both contest and sport flying.

The single-wheel arrangement has many advantages, chief of which is a great reduction in drag, as the motor and landing gear can be completely housed within the fuselage itself, without exceeding the cross section required by the NAA rule. Though inverted, the engine cannot be damaged by striking an obstruction or nosing over. Last, but not least, a considerable amount of weight can be saved and incorporated in the rest of the structure for greater strength. (Could it be that two ships can be built from one pair of wheels?)

A comparatively high thrust line, long tail moment arm, and large stabilizer area aid the ship in assuming and maintaining its own most efficient attitude. Generous polyhedral in the wings and slight anhedral in the tail work for spiral stability: After watching many a juicy spiral, it seems that the tail swings outward, increasing the angle of attack on that portion, helping to rotate the rear of the fuselage. Anhedral in such a situation creates just the opposite effect, producing a righting tendency.

The wing area has been kept as small as possible without skimping weight on the motor unit, or exceeding the minimum NAA weight rule of 8 ounces per square foot, to attain the fastest climb and lowest sinking speed possible. These desirable qualities were exhibited by the original at its first contest by flights of 3 minutes, 19 seconds and five minutes, 40 seconds on a 19-second motor run. In calm air the altitude reached with this motor run has been determined to be actually 300 to 400 feet, resulting in a power to glide ratio of over 8 to 1..."

Supplementary file notes

Plan file includes the full original magazine article.

Corrections?

Did we get something wrong with these details about this plan (especially the datafile)? That happens sometimes. You can help us fix it.
Add a correction

Record Hound (oz24) by Henry Struck from Air Trails 1939 - model pic

Datafile:

Record Hound (oz24) by Henry Struck from Air Trails 1939 - pic 003.jpg
003.jpg
Record Hound (oz24) by Henry Struck from Air Trails 1939 - pic 004.jpg
004.jpg
Record Hound (oz24) by Henry Struck from Air Trails 1939 - pic 005.jpg
005.jpg
Record Hound (oz24) by Henry Struck from Air Trails 1939 - pic 006.jpg
006.jpg
Record Hound (oz24) by Henry Struck from Air Trails 1939 - pic 007.jpg
007.jpg
Record Hound (oz24) by Henry Struck from Air Trails 1939 - pic 008.jpg
008.jpg

Do you have a photo you'd like to submit for this page? Then email admin@outerzone.co.uk

User comments

Hi Mary and Steve, As promised, here are some photos [morepics 004-008] of my Record Hound, converted to R/C assist. It is powered by a Turnigy G25 turning a 13x6 prop, 50a ESC and 2200 3s lipo battery. It weighs in a 3 lbs. 2.2 oz. and balances right on the indicated plan CG. Covering is black super monokote and Hobbyking transparent burnt orange. Stars are hand cut from the black monokote. Thanks for your wonderful website. I check it daily and have put many plans on my to do list. Your efforts are greatly appreciated for us all who endeavor to keep this hobby alive. Chuck Johnson. Umpqua Valley Modelers
Oakland, Oregon.
ChuckJ - 17/08/2019
Add a comment

 

 
 

Download File(s):
 

Notes

* Credit field

The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.

Scaling

This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.

 

Terms of Use

© Outerzone, 2011-2019.

All content is free to download for personal use.

For non-personal use and/or publication: plans, photos, excerpts, links etc may be used, provided that full and clear credit is given to Outerzone with appropriate and specific direction to the original content i.e. a direct hyperlink back to the Outerzone source page.

Unauthorized use and/or duplication of this material without express and written permission from this site's owner is strictly prohibited. If we discover that content is being stolen, we will consider filing a formal DMCA notice.