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Posted by JeffMac | May 10, 2020 @ 07:28 PM | 5,678 Views
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Scanned from my issue of Model Airplane News January 1951 it's the K&B Torpedo .049 engine review...

Enjoy,

Best regards,

jeff
Posted by JeffMac | May 10, 2020 @ 07:22 PM | 5,339 Views
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From the Master Bill Winter and scanned from my original issue of Model Airplane News May 1935 it's the rubber powered Vultee Transport.

This model looks well drawn and the plans are full size. It also looks like it would be a good flyer if kept light.

Enjoy,

Best regards,

jeff
Posted by JeffMac | May 06, 2020 @ 09:43 PM | 6,245 Views
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Inspired to get another GHQ running, this time on spark ignition, I managed to my surprise that this old " Q" fired off and ran steadily... A large " Ritz" prop was used , 50 % # 30 motor oil with 50% alcohol free pump gas is the fuel. The oil amount is to help seal the poor fits enough to run, it did not hurt. The engine leaked slightly from nearly every joint when running but the needle valve worked well enough to compensate for the leakage. Sometime, the engine will be taken down and the surfaces lightly lapped to improve those flange fits.

Many of these engines would not run when new because the instructions & illusrations from GHQ showed the ignition timer in a clock wise position. The late Bill Mohrbacher ( GWillie) youtube video helped save me a lot of time with his excellent information. For standard counter clockwise running, have the timer as shown in my videos. How many engines would not run " back then " due to this miss-understanding ????

It was satisfying to hear this classic actually run, the engine was notorious for poor quality....

Enjoy,

jeff

https://studio.youtube.com/video/swkM5C7z_e4/edit

GHQ model airplane engine running 2 (0 min 47 sec)

Posted by JeffMac | May 05, 2020 @ 09:26 PM | 7,359 Views
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Scanned from my original issue of Flying Models 6-47 Henry Cole's Super Looper, a minimalist controliner powered by a Forster 29 using the then new glow plug... It looks like a fine flying model that i may build up sometime...

Enjoy,

Best regards,

jeff
Posted by JeffMac | Apr 27, 2020 @ 02:34 PM | 9,059 Views
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Scanned from my original Model Aviation is the 1937 RC contest article by Walt Good...

Enjoy,

...Continue Reading
Posted by JeffMac | Apr 25, 2020 @ 04:33 PM | 6,422 Views
The 1946 Detroit Michigan USA made Delong " 30 " spark ignition engine was a well made unit which was setting control line speed and free flight records nationwide. Dick Korda flew his Powerhouse 56 with the Delong......

However, not all was perfect with these engines as John Pond recollected in the scanned article attached..... A scan of a photocopy of an original instruction and parts list is included as well.

I am preparing my Delong 30 for some test runs on spark ignition with gasoline ( lantern fuel this time ) and will add to this entry with pics and video then.

Enjoy,

Best regards,

...Continue Reading
Posted by JeffMac | Apr 25, 2020 @ 04:18 PM | 6,314 Views
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I set up a portable ignition pack using a Modelectric coil, Tobe condensor and a 3.7v single cell LIPO battery.... The Brown Junior was purchased several years ago and was said to have been rebuilt. What better way to find out than with a test run or two ? Yes, the engine was exactly as claimed and was carefully adjusted to avoid overheating or lean running.

Regular unleaded pump gas and #30 motor oil was mixed to ~ 30 % oil ratio.... An old Top Flite Super M 13-6 was mounted. Needle set to three turns out and a couple choked flicks and the Brown started right up. They are a well made and easy to run engine, and a real classic. Sorry the videos are not to a high standard but i will improve on that That was the first time i have actually used gasoline in these antique engines - ~ 5% nitro 20% castor glow fuel was used to fly my RC1.

Brown Junior Model D 1st run after rebuild (0 min 22 sec)


Brown Junior running (0 min 9 sec)
...Continue Reading
Posted by JeffMac | Feb 21, 2020 @ 10:47 PM | 3,594 Views
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A long time friend had this Skychief and was obtained from him. The engine was in good shape except the crankshaft threads were destroyed and many original parts were missing. A parts Skychief was obtained from an RC groups fellow member and that engine provided the original needle valve / fuel tank assembly , crankshaft , spark ignition timer. The refurbished Skychief pleases me. The crankcase is very light zinc or such pot metal ??? the cylinder is very heavy cast iron. The piston has one ring of about 1/8" width. The piston was soaked for a week in ATF to help loosen the stuck piston ring on my Skychief.

Best regards,

jeff
Posted by JeffMac | Dec 28, 2019 @ 11:41 PM | 2,527 Views
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The 1953 ? Japanese " BOXER " .099 glow is a very obscure marque ... See Adrian's model engine website for more info.. or Ron's model engine news for an article...... My engine is missing the prop drive and fuel tank. Adrian says an OK Cub .074 tank can be trimmed to fit and i will do that....

Best regards,

jeff
Posted by JeffMac | Nov 27, 2019 @ 10:05 AM | 4,153 Views
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Scanned from my issue of the June 1940 Model Airplane News is the Burd KORDA WORLD RECORD HOLDER.... That is a lot of model for 29 cents ...... This model is not the 1939 Wakefield, but an earlier model which won Mulvihill. I built one for electric RC years ago, it is a fine flier.

Also scanned from my issue of December 1939 Model Airplane News is the Country Club Aero Supply Jimmy Allen Sky Raider model kit.

The link to my build conversion log of my Korda World Record Holder built in 2003 from the BURD plan...

https://www.rcgroups.com/forums/show...0#post40768291

Enjoy,

Best regards,

jeff
Posted by JeffMac | Nov 10, 2019 @ 05:57 PM | 2,683 Views
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Recently i acquired this 1940 ? Syncro Devices , Detroit Michigan, USA Syncro Ace Special spark ignition model airplane engine. Also, the 1938 Megow Models catalog yielded some interesting Syncro information.....

Seems the Syncro Saws may be more popular than the engines...... A second or third hand Syncro saw was my 1st saw - it did a nice job, but was extremely loud.

The Syncro B-30 and kit version PC-2 slag engines were art deco pretty, but did not add to the Syncro reputation in a good way.

Enjoy,

Best regards,

jeff
Posted by JeffMac | Aug 26, 2019 @ 07:00 PM | 4,270 Views
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I finished building the 66" Colt 35 under Sundancer George's Complete A Project ( CAP) 2018.

It got to fly it this summer quite a few times , so far... It just could not be a better flyer.

If anyone cares to build it - DO NOT USE THE FRONT WING MOUNT DOWEL LOCATION shown on the plan - change it to a typical dowel like i did, or your favorite system.... That was a mod after flying and having the wing shift.

A link to the build log is posted below rather than repeat it all...

https://www.rcgroups.com/forums/show...6-22-19-7-1-19

The ready to fly weight is just under 5 pounds... Polyspan and Polyspan lite were used for covering, Nelson clear and blue Water based polyurethane and yellow tamiya acrylic paint was used.

The videos are short, shot by me during flight .....

Enjoy,

Jeff
Posted by JeffMac | Jul 03, 2019 @ 09:32 AM | 4,772 Views
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Scanned from my original copy of June 1950 Flying Models it's Walt Schroder's Gassies 1/2A free flight designed for newcomers.

The thick wing would help with steady flying, I'll bet it would be a good flyer today also.

Enjoy,

Best regards,

...Continue Reading
Posted by JeffMac | Jun 03, 2019 @ 07:50 AM | 3,478 Views
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Thought I would share the recently completed Skelly Oil Co. Jimmy Allen Thunderbolt 200% 48 inch electric rc. This model was a Complete A Project 2019 - it had languished since 2007 or so, unfinished. Thanks to Sundancer for running the CAP !

The 12.7 ounce ( 360 gr ) model uses Litespan covering adhered with Modpodge and a hobby iron. A 12mm inrunner with a GWS geardrive powers the plane.

A build log link as well as some cell phone vids are linked....

https://www.rcgroups.com/forums/show...wo-better-vids

https://www.rcgroups.com/forums/show...ter-vids/page5

Thanks,

Best regards,

jeff
Posted by JeffMac | May 28, 2019 @ 06:40 PM | 3,514 Views
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2003 I built the BURD Korda world Record Holder as electric RC. Although it was a good flyer, the GWS brushed motors and fairly heavy batteries put the model in storage after a couple years of successful flying.

I'll link the build / refurbishment log rather than repost it all.



https://www.rcgroups.com/forums/show...Video-attached



There are a couple flight video links in the log. The model really got brought to life with the brushless conversion and flies better than it ever has.

Best regards,

jeff
Posted by JeffMac | Nov 15, 2018 @ 11:08 PM | 4,788 Views
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Scanned from my original issue of the May 1940 Flying Aces it's the Bambino Bipe - an interesting rubber powered biplane....

It looks like it would be a good flyer....

Enjoy,

Best regards,

jeff
Posted by JeffMac | Nov 11, 2018 @ 07:54 PM | 4,642 Views
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Scanned from my original issue of May 1938 Popular Aviation Paul Lindberg's Curtiss P37 fighter.

Feel free to download these full size plans.....

Enjoy,

Jeff
Posted by JeffMac | Sep 05, 2017 @ 10:09 PM | 6,346 Views
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Having obtained a 1951 ? IMA FROG 150 Diesel I have scanned the original instruction sheets and the parts list. Also, the 150 Red Glow instructions are included. The glow version was a failure and only offered for a short time early in the production from the factory in England....

enjoy,

Jeff
Posted by JeffMac | May 09, 2017 @ 10:22 PM | 9,064 Views
Hi All-

This Megow AYA #4 Junior Endurance was scanned from my original 1940 Megow plan. The file size reduction is mine on this one. No clean up of the scan was attempted but it is the real thing...

AYA is Air Youth Association which was an organization intended to promote model airplane building and air mindedness amongst young people in the USA.

Most model companies participated in the AYA programs using standard designs or in many cases, their own designs such as this one from Megow.

It looks like it would be a really nice flyer and doesn't look to really need changes to build and enjoy it....

Enjoy,

jeff
Posted by JeffMac | May 06, 2017 @ 06:03 PM | 9,402 Views
Hi All -

this is scanned from my original Scientific Models plan for the Flying Yankee rubber powered model.

the plan is in poor shape but the model could be built, using your favorite airfoil.....

Enjoy,

jeff