Saturday, August 3, 2024

Soaring USA


I recently purchased an RTF 2m by Vincent Merlijn from Alex Breaux of Soaring USA. Although I have faith in the USPS and other delivery services, it takes just one drop or crush from packing or anything to damage a ship. One of my other disciplines is fly fishing, particularly beach fly fishing and this weekend I was headed to Bolsa Chica in Southern California. A quick search revealed the location of Soaring USA was on the way. 

Arriving there, I was invited in (appointment only) and was greeted by Jeanine and Alex. Quickly I was given my 2m wrapped in bubble plastic and I started a conversation on my further interests in radio control soaring. Alex is super knowledgeable and helped me with assembly techniques on the 2m (Mylar wing root tape to protect covering) and answered my questions which lead him to further suggestions on different wings I may be interested in.

We shook hands and I was back on the road to my fishing destination.




Sunday, June 9, 2024

It's Been a Minute...

The Rise and Fall of the Frankenradian

The last week has been rough, but it ended well. Long story short, I destroyed my latest sailplane on its maiden flight. I did everything right except keep myself in check. I'm terribly overconfident because I have quite a bit of old experience. That's precisely the problem, it's old. Old experience will help, later. It doesn't really help on day one. I haven't flown in quite some time.

I threw it into the air, full throttle and it climbed out steeply. I knew the motor was strong but as it continued to climb up on to its back, my old experience was not fast enough, and I could not roll out or anything but slightly delay the inevitable.

I destroyed it.



It's a week later and it isn't so difficult to write, I want to move away from that memory and my journey has me already flying since then. Friends came to the rescue. I now have a Radian XL and have flown it on my own.

I have another complete Frankenradian kit that I've started but I may put it on hold, I don't know, I have some thinking to do. As it stands now, I'll finish it, maybe a two piece with, no flap or I'll finish it and use it to transition into the Yellow Jacket that I have 80% built.

My goal is to be ready for the 2025 F3L season and I'm still on track however, I had a major setback in destroying the FR. It is nearly mid-June so if I finish it mid-August, I'm still good. I'll fly the Radian XL and work on the FR and complete the YJ and be ready.

There, that's what I'm doing.

I'm going to just copy my social media post from yesterday and place it right here...




"I got to fly today! After last weekend’s terrible ending to my freshly built sailplane, it was good to shake that off. My friend Ken was so kind to push a Radian XL my way and I accepted his gift AND the suggestions from he and John, “Just fly the Radian” which now I will. I came down to the field to just pick up the Radian but John was like, “You want to fly?”
“Hell yeah!” I wasn’t feeling too well from a bender last night but he got his beautiful sailplane up over the North end of the field and handed me the transmitter, “here you go” I flew around on ailerons and elevator (no rudder) and finally lost it, “take it, I lost it, disappeared…” and he gently takes control, “Adam, just pull up when you lose it so the wing shows.” It’s quite a ship, large span and it was way up there like small. He handed me the radio and I flew it around some more. John spiraled it out of the sky and landed it at our feet.
He is an amazing pilot and a pretty good teacher too.
We sat under the shade structure and Ken and Randy worked on mapping control throws for flying and a little later John goes, “You want to fly that Radian?” “Yeah, that’s a good idea, can we do that?”
Like before, this is the second time with a different glider, he dug around in his truck for the receiver, plugged in the servos, created a new file in his transmitter and configured the controls.
I was really tired, hot, dry, but I knew this was my lesson that I needed, again to get going.
He threw the glider with no motor, “Do this first.” Flying it to a soft landing. Then he motored it up describing how he controlled it and handed the transmitter to me. I flew a circles, reversed then he motored it up again handing me the controller. I flew another big circumference of the field as he talked to me while observing and I brought it in for a landing not to far from us.
“That’s how to do it” he said.
The next time he coached me, “Motor on (he had the throttle on a slider) and pushed it into flight. I flew it up keeping it level and steadily climbing out again in a big leg. I flew a circuit again and he said, “you are pretty far away, bring it back and land” which I did. Again, pretty close to us.
“John, I’m getting baked by the sun.” It was only around 10:30a and already 105 degrees. Tired, hungover but very happy. I shook off that bad feeling from last weekend.
“You did good.” And I could hear Ken say something to that affect as well.
So happy but I needed to get some water in me and cool off.
I broke the glider down, stuffed it in the Forester and waved goodbye driving off.
I was happy, I wanted to share my moment with my wife.
The “I” came on in the dashboard and the TPM idiot light blinked on. I scrolled through the car’s menus and got to the tire pressure. Left rear 25 lbs, now 24.
“Melissa, I think I’m getting a flat tire.”
22, 21 and then 0.
Pull over in a horrible spot.
Changed the tire, ugh.
Home.
Shower.
Discount Tire.
Tire no good. Tires halfway through their life.
The heat is just starting too."

So, I did learn something, I'm overconfident and I will fly a Radian (XL) and rack up hours. This one was given to me, it doesn't need much and it has spoilers. It's heavy and wants to come down and that's ok.

I'm back at it.

Friday, May 17, 2024

Charging System



I put together my system with a combination of research and suggestions from my peers at the SWSS. I chose a Goal Zero power station because I like the company and what they do as well as my own use of their other power supplies. My battery is also available for use during travel so it is quite useful.

On the suggestion by a friend, I chose the Ultra Power UP9 smart balance charger. It is capable of charging from an AC or DC source, it is configured with common XT60 connectors and has 4 channels for simultaneous charging of different types of batteries. The screen is also easily seen in bright sunlight. It is able to maintain multiple cell batteries of all types and the charge and storage menus are easy to configure.

I use cables and connectors sourced from Aloft Hobbies.

For transport and storage I use a lipo safe storage bag. 



Sunday, May 12, 2024

Freudenthaler Folding Propeller


I can’t remember the exact year, very early nineties and I was building a Carl Goldberg “Electra.” I had a friend who was really good at R/C, he was actually good at a lot of things and we flew hang gliders together cross country, if he could keep up. His Electra had a geared Astro motor and this beautiful German folding prop.

I had to have all of that.

Len flew r/c aerobatic planes and he was good, apparently very good. He also flew the helicopter and reported the news for channel 12 here in the valley. Going hang gliding together was a blast! We spent a lot of time together around the campfire and in the air. At Torrey Pines, he flew is slope glider, it was this rocket glider with stubby wings but it flew faast! He would hand me the transmitter and I would do laps but the glider was flying ahead of me! Not the other way around.

Anyway, this time around, I decided to build a short kit modified Radian lovingly called the “FrankenRadian” and I defiantly had to have a Freudenthaler folding prop. I ordered from Aloft but they sent me CAM Z, “Adam, they are much better, they aren’t making the old ones any longer.” 

What?

I’m thinking to myself, they look nearly the same, a little bit different in the bend. No, I want the Freudenthaler and finally found mine.

There isn’t much about Rudi Freudenthaler the person, apparently he is a legend but I know there is a story there, probably like my friend Len.

I love this system. It is amazing and works.

I’m sure I’ll own other blades but this propeller is going to connect the young me with the old.







Saturday, May 11, 2024

Pandora Timer Project



Wow! Cool! The guys (thank you Andy Schuler and Randy West) offered to help me with a timer! The internals sourced by Andy, the case kit 3D printed by Rndy.

Assembly is straightforward, start with the reset hole guide and drill.

CA glue pin inside button, let dry.

Solder red wire on positive, black on negative.

I wrapped the battery once around with thin foam tape. Orient battery in the case at the bottom to clear the reset hole. 

Place a short length of straw as a guide for the antenna, route antenna inside.

Place stop/start button in case.

Place board carefully. 4 ea screws hold the board down.

Peel film off back of clear display panel and set in case on top of board.

Peel protective film and screw down display panel.

Charge with USB-C, it will auto shut off when charging is complete.

Long press stop start button to turn on. 

Rocker button to “MENU” to access function options and POWER OFF.

You are done, Pandora timer is ready for usage.

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Turnigy 2000mAh 1S 1C Lipo w/ 2 Pin JST-PH Connector (out of stock)

Spec.
Capacity: 2000mAh
Configuration: 1S / 3.7v / 1Cell
Constant Discharge: 1C
Cell Weight: 33g
Dimensions: 49 x 34 x 10mm
Charge/Discharge Connector: 2 pin JST-PH

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Dimensions: 10*34*50mm

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I ordered the four pack from Amazon. Batteries R Us had some that would work but capacity was lower and they were super expensive.

MakerFocus 4pcs 3.7V 2000mAh Lithium Rechargeable Battery 1S 3C LiPo Battery with Protection Board Insulated Rubber Tape and Micro JST 1.25 Plug

Note: 
1. The maximum operating current of this battery is only about 1.5A, can not be used for unmanned aerial vehicles, model aircraft or power tools and other products that require high current
2. Connector is Micro JST 1.25 plug, it can be used for ESP32 ar duino development board whose plug is 1.25mm

Specification:
Standard Voltage: 3.7V
Capacity: 2000mAh
Approx Weight : 35g
Dimensions(±2mm): 50 * 34 * 10 mm /1.96 * 1.33 * 0.39inch(L*W*H)
Discharge Rate: 1C
Working Current: 1.5A
The maximum discharging current: 3C
Overcurrent Protection: 1.8-2.1A
Type of Connector: Micro JST 1.25

Standard Charging Method:
Charging this battery to 4.25V at 0.2C constant current, then charge the battery at a constant voltage of 4.2V till it's charging current ≦ 0.05C

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Drill the reset hole with the guide

Coffee stir straw to route antenna


Quick charge from my Goal Zero battery bank