Kmot's blog View Details
Posted by Kmot | Jan 03, 2021 @ 02:08 PM | 5,096 Views
Another plane for the hangar. A beautiful Cirrus.
Posted by Kmot | Dec 12, 2020 @ 09:01 PM | 9,520 Views
and Happy New Year!
Posted by Kmot | Aug 09, 2020 @ 08:16 PM | 9,354 Views
In 1974, I taught myself how to fly RC. I did not belong to a club, I did not know anyone else who was into flying RC. But I wanted to get started.

I purchased everything I needed from Hobby Shack. A little 1/2-A high wing trainer called Mini Star, by Pilot; a Cirrus 4-channel radio, Cox engine, fuel, epoxy, rubber bands, battery, starting clip, etc. The cost added up to $213.36 with the 6% local and state tax. I priced everything from a 1974 Hobby Shack catalog. With inflation, that would equal $1115.69 today! Can you imagine. It was an expensive thing to get started in RC back then, and you had to be serious about it.

Well, I don't recall exactly but I think my first 30 to 50 flights were very short and all ended up with some sort of crash damage. Mostly to the front of the plane. With epoxy, balsa, and whatever else I repaired it and tried another flight. By the time I completed a full flight, IE ran the Cox engine tank empty, and landed smoothly, the plane looked completely different in the front! And it weighed significantly more. But, it was a glorious day! I had graduated!

A few years ago, I was thinking that it would be cool to find one of those model airplanes, and have it hanging up in my hangar, just for old time sake and to remember the challenge and struggle it was. I found a Cirrus radio easily enough. But the Mini Star ARF eluded me. I did see the balsa kit version come up for sale occasionally, the 1/2-A Baby Star. But I wanted the same ARF,
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Posted by Kmot | Aug 03, 2020 @ 10:50 PM | 5,777 Views
I was thinking about my very first radio, a Cirrus 4-channel from Hobby Shack. I purchased it in 1974, for a cost of $150, plus whatever the tax rate was back then. Looking at the US Inflation Calculator, that would be $784 dollars today. Plus the tax.

4-channels. No dual rate. No expo. No servo reversing. No LCD screen. No computer. No mixing. No programming. No software. No adjustable gimbal sticks.

Yes, it cost a lot more of your hard earned money to get into RC back in the day then it does now.

Posted by Kmot | Jul 27, 2020 @ 12:43 AM | 10,476 Views
I got an engine made the same year I was born. I think that is pretty cool.
Posted by Kmot | Jul 05, 2020 @ 03:54 PM | 10,695 Views
Plane is all ready to go now. I plan to fly the maiden this coming week. ...Continue Reading
Posted by Kmot | Jun 12, 2020 @ 04:30 PM | 14,623 Views
Just finished my Beaver today. I added a 3D printed radial engine and oil coolers. And an ESS-One Air sound system.

FMS Beaver V2 (3 min 10 sec)
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Posted by Kmot | Apr 18, 2020 @ 09:34 PM | 6,451 Views
Wanna see some really awesome action? Look up Formula Offroad on Youtube.

Here is my latest RC car, a Kyosho FO-XX (Formula Offroad - 2X size) with a .25 glow engine, done up with some decals to look like the full scale racers.
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Posted by Kmot | Dec 29, 2019 @ 11:34 PM | 9,566 Views
Just finished this one. Only need some CAF decals which will arrive in a week or so.
Posted by Kmot | Dec 19, 2019 @ 11:56 PM | 9,092 Views
RC Groups member, "Peter from GER" has made a 3D printable Pratt & Whitney R-1340 radial engine that can be built and then installed onto the E-Flite AT-6 foamie.

I am currently painting the parts and will assemble the dummy radial soon.

The STL files can be purchased for the mere sum of $10 USD and then you can print the parts yourself or have a commercial printer do them for you. Or, you can order a kit of parts from Peter himself.

Link to STL files:

Peter's contact page:

Posted by Kmot | Dec 17, 2019 @ 12:43 AM | 19,433 Views
This is my latest model I have built. It had some defects I had to correct but all is good now.
Posted by Kmot | Oct 10, 2019 @ 06:20 PM | 7,247 Views
This plane was built and flown in 2006 and 2007. Last time out it had a hard landing and broke the nosegear bulkhead, broke the right main landing gear wood blocks, and broke the right wingtip. I hung it up in my workshop and there it has hung for 12 years.

I recently decided to get it going again. I repaired the nosegear bulkhead and cut away the crushed wingtip and replaced it and recovered it.

The engine was spotless inside and only needed some fresh oil.

I replaced the old FM radio with a newer 2.4 gHz version.
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Posted by Kmot | Sep 29, 2019 @ 04:57 PM | 6,847 Views
This is the FMS 1400mm "Sky Trainer 182". I suppose due to licensing issues they did not use the Cessna brand name.

Beautiful scale model.

Posted by Kmot | Sep 29, 2019 @ 11:14 AM | 6,933 Views
Japanese version of the Me-163 Komet. This one has a cool paint scheme.
Posted by Kmot | Sep 14, 2019 @ 11:01 PM | 7,259 Views
Today, I converted a Hewlett Packard 500W PSU to a 12V DC bench top power supply to use with RC battery chargers. I cut off 53 wires and 10 connectors. I grouped like wires together and then covered them with heat shrink tubing. I soldered 6 12V leads and 6 ground leads each in parallel. I soldered the power on signal wires together so that the power supply turns on when plugged into 120V AC. When I was finished I connected my Turnigy quad charger to the converted PSU and the charger lit up and then I charged a 2200 3S LiPo at 8.36 amps. Pretty cool.
Posted by Kmot | Sep 11, 2019 @ 09:52 PM | 6,840 Views
House of Balsa Me-109. I built it in 1974, or maybe 1975. It had a Cox TD .049 engine. The radio was an Aero Sport from Hobby Shack. The servos were standard size, the receiver battery was a 4-cell NiCd pack. The plane was heavy. Hand launching it, I would give a mighty heave while the TD was screaming. It would dip, almost smack the ground, and slowly gain flying speed. Once it was flying, it hauled like a raped ape.

Being without a throttle, you just flew till it ran out of fuel. And then hoped you made it back to the runway. The last time I flew it, it did not make it back to the runway. It landed off in the dirt field. But since it had rained recently, it was soft dirt. So no damage happened. I put the plane away and moved onto another model as I was just starting in RC and was excited about getting new planes.

I kept this HoB Me-109 with me for decades, Wherever I moved too, it came along. In 1996 I moved into my current house. I have a metal storage shed out back. The Me-109 was stored in this shed along with a couple of other models from my early RC days. In 2005 (hard to believe 14 years ago already!) I was playing with the idea of getting it into flying shape again. Unfortunately, it had become so brittle that after taking these photos, it crumbled when I tried to take it apart. So I saved the pilot bust and the engine and scrapped the airframe.

I restored the engine a few years ago, and it is ready to be used again if the opportunity ever arises.

Posted by Kmot | Aug 09, 2019 @ 04:13 PM | 7,871 Views
I did not know much about Merco engines, except that I recalled the brand name from being in the hobby all of my adult life. I did not even know that they were made in England. Until recently, that is.

I had been thinking of getting a Merco, mostly because it seemed to be a somewhat obscure brand of engine and I wanted one for my collection. How wrong I was! Thanks to the website Sceptre Flight, which has dozens of old engine reviews from the long gone print magazines, I learned just how much the Merco was revered back in the day, and what a world champion caliber competition engine it really was.

But before I had read any of those old articles, I had purchased from the RCG classifieds, a well used and castor oil coated Merco .61 Mark I. I intended to tear it down, and rebuild it.

This particular engine was frozen solid like a rock! The old, dried castor oil had welded every part to each other. It took copious amounts of heat to get anything to loosen up so that I could disassemble something as simple as the back plate. To get the cylinder out I had to machine a drift from bronze, and use a lead hammer while wearing thick leather gloves to protect my hands from the searing heat due to having to super heat the crankcase to loosen up the burnt on, dried out castor oil residue.

Once I had the engine completely disassembled, I soaked the parts in an ultrasonic cleaner with a diluted cleaner concentrate. That took care of most of the old castor oil but some of the parts
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