This morning I worked on starting up and tuning the RCGF 10cc engine on the Stik. This is the one I rebuilt and broke the piston ring, had issues with a mistake I made on the metering diaphragm of the carb, and it has a newer cylinder because I stripped the plug threads. So essentially I am breaking in a new engine. I have her running well, but her idle has been a bit high and iffy. Working the low needle for the smooth transition and a decent idle, and finding the balance between low end point on the servo and the low needle setting, giving me a decent no-thrust idle that didn't die, took an hour, but I have come pretty close. I think as she breaks in this will settle down. I wanted to fly her today, but conditions and situations weren't right. Patience.
On my way home from RC Aces in North Hampton, I decided to see what conditions were like at Wason Pond Field, off NH 102 in Chester. There was a clear field, nicely cut, and some wind gusts but manageable. I flew three batteries and enjoyed myself, getting my flying thumbs tuned up. All in all a nice flight.
The weather was wonderful, clear blue skies, and the winds light. I wanted to take advantage of this and headed out to RC Aces in North Hampton. I have been thinking about joining since Gary Hoffman mentioned he now flies out of there. It's a nice field, flat, two runways, and a group that takes very good care of it. Being a bit of a long drive from my house, it's also nice that they have a small solar and power generator charging station. I looked over their website and was pretty impressed, seemed like a nice club to join. Another $75 a year for a membership... need to think about it.
30 miles, about 40 min.
This is on the way back out, but this is the dirt road that accesses the field behind Joe's Meat Shoppe. If you don't know the road is back there you will drive right by it. Gary had said something about it being behind this shop and it stuck in my head. Glad it did as the GPS took me to the wrong side of the field. I drove back remembering what Gary said and found the road.
I was lucky that Cappy Polito and Mike Larson were there! There is a locked gate and I wouldn't have been able to get to the field. They were just leaving but kindly stayed and showed me around, and let me put the Alpha 450 up. The ground is marshy, and recent rains have made it very mushy wet. Everywhere was marshy wet and muddy, I almost got stuck leaving! They noted that in the summer its much drier and not marshy. I really appreciated their kindness and would be comfortable there. It's clear that this is a very well cared for field, and its flat all around. There are some tall and taller in the season, vegetation nearby, so having to bring down or losing a plane would be an adventure to find it, but I would be able to see it all the way down. It was too windy and the Alpha bobbed all around, so I flew only for a few minutes. Since they had stayed to let me fly, I decided not to fly the Stik, which could likely have handled the winds fine.
Parking viewed from the field.
The solar charging station.
Some of the prep tables.
A view across the field.
View from the parking lot into the field.
I think this is a very nice field, and if Cappy and Mike are any indication the club has a nice friendly membership that takes very good care of their field. If I don't join it will be paying out another fee and having to drive a rather long way. We'll see.
Not much to do for the Spitfire build, waiting for paint to dry on the cowl, so I decided to charge a few batteries and head out to the ball field near my home and fly the Eflite Alpha 450, my original trainer and go to for first flights. She flew fine, but it started to rain, landed then it settled into a sprinkle. The pitter-patter caught my attention. Want some more practice...
Today was a busy day. I put the markings on. I took her out back and ran the first and second full tanks, using the rules set in the manual. I did some minor tuning of the needles. There is still a little lag in run up from idle to full throttle. Even during the break-in runs I could hear the engine becoming more efficient.
This is one sweet engine.
I had tried the muffler extension to see if it would deflect the exhaust oil. It points up and out. It deflected it alright. Sucker is soft silicone so if flutters and sprayed the entire side. I removed it. Without it I get a patch across the wing and less on the fuse. I can deal with that. I have since put a piece of duct tape just on the leading edge where the heat and oil collect on the leading edge to about mid way along the chord.
The new flat profile fuel dot came in. I installed it replacing the red one. This looks so much better.
My Master Airscrew 12x8x3 prop arrived. The gloss is new, these used to come matte. Nice, I like.
The cut-outs to allow the cowl to fit.
The landing gear have always been twisty and today I had had enough. Past attemps to fix have failed. I removed them and cleaned up the JB Weld of my last attempt, and let some super thin CA fill in around the posts. I then used 15 min epoxy and reinstalled the gear. Hopefullu that will be thw ned of that!
Today the Tech Aero Ultra BEC/Remote Ignition Switch arrived. I installed it (could not have been easier, described below). This was all I needed to start the engine.
Factory settings, didn't even check the needle settings. Xoar 12x6 break in prop. I ran my stock 30:1 (4.3 oz oil to 1 gallon gas) fuel, and it is, like my RCGF engines, still spitting oil all over. Evolution calls for no less than 20:1 (6.4 oz to 1 gallon)! Can you imagine how much oil that would throw? I don't see me increasing to 20:1, warranty or no. I only ran it for about 10 minutes, barely touched the 420cc tank. I did forget not to run full throttle, but next time, when I run a full tank, I will be more careful to stay 1/2 and less.
No priming. Filled the tank (saw no leaks), turned everything on, put the electric starter to the cone and BRRRRRRP! She started within seconds! Ran just fine. I won't do any tuning until I have run a tank or two through her. I don't know that she will need it. I really like having the telemetry with the Spektrum AR8010T telemetry receiver. My satellite receiver only has one antenna, which I mention as I thought it odd... I really like that bind button instead of having to plug it. The Evolution 10cc kit came with a lot of extras, including an RPM board that plugs into the RPM plug on the side of the receiver using a satellite plug. That was it. The DX8 required no special setup. Now I have the battery pack voltage and RPMs. I like this telemetry thing and am glad it's built in: Evolution-Specktrum coordination! Nice engine. Higher pitched sound than I remember from the RCGF. Oil is on the top of the wing, and sprayed all across the left side of the fuse, all because of that muffler. It comes with a silicone diverter tube, but that's just too much hanging out there. I don't feel like spending the money for a Pitts style muffler.
Look at that natural oil weathering...
This is the Tech Aero Ultra BEC with integrated remote kill switch. Gary Hoffman turned me on to this. It could not be easier to install. It eliminates the need for separate ignition and receiver packs, allowing me to use one 2S LiPO 2550 mAh battery for both. The 3-wire plug goes into an AUX channel on the receiver (I used AUX 3, assigned it in the radio to the MIX/HOLD switch) This provides power from the receiver to the ignition. A set of jumpers sets the voltage sent to the ignition. I have no jumpers, sending 6.6V to the ignition. The 2-wire plugs into the ignition red plug that is usually where an Ignition Battery lead would plug in, or a remote kill switch like the RCXel one I use on all my other gassers, which is half the price. The kill is the AUX switch cutting the power to the ignition. That's it! The LED indicates power on, and comes in a variety of colors. I chose Green. Worked the first try. Flicking the HOLD switch turns it on or off. Mine is set 0 is on, 1 is off.
The only thing I need to do need to do now is try to figure out how to get the cowl on past that muffler and see how much I need to remove for the cylinder head.
Sorry, Joe Nelson... I think I am becoming an Evolution guy.
The tank is plumbed. I stopped by our LHS, ABCHobbies today, and picked up a gas proof plug, I installed the tank using it, and the plastic pipes that came with the original set. I would prefer metal, but plastic is what they are. I don't think the metal plate that is inside the tank that compacts the rubber stopper is working right, I think it stripped. I may solder a nut on the inside of it to be sure. You might notice that I had to move the battery, reciever, and the throttle servo to the otherside. Turns out the throttle linkage is on the other side of the engine.
Here's the underside in it's final settup. The throttle control rod is installed.
This is the Evolution 10cc engine installed, with the ignition. Right out of the box you realize that this engine is a thing of quality. Well constructed, solid, clean. The compression on the cylinder is powerfully tight. The aluminum case that holds the ignition is a solid brick of metal. Quality. I am impressed so far. That muffler is HUGE. It's going to come out OVER the wing, I think!
The view from the top. Again, that muffler! I am waiting for the Tech Aero UltraBEC to arrive, and then I will be able to start the engine.
The fuel dot. Don't think I like it. It sticks out about 5-6 mm, clunky. I like the flat ones. I will probably replace it.
A problem presents itself with placement of the fuel vent. The cowl is large and comes back kinda far on the front of the fuse. I ran the line to the back, just behind the wing screws. I created a flat plate to make it easier to install. Its not as raised as it looks...
It sat for a couple of years, but in the last month I have all but completed the Spitfire Redux.
Seen here are the rudder and elevator servos. I have since also installed the throttle servo in the open space there,
The electronics bay is done, except for the Aero Tech Ultra BEC I ordered this morning. The fuel tank is just sitting there, unplumbed. I still haven't been able to find out if the black rubber fuel tank stopper that comes with the kit is gas proof. I'd like not to buy another one if it is, but no one seems to know. I work tomorrow, but Wed I may run out to the LHS and pick up a Du-Bro gas stopper for the tank. I have attached the wing so I could set up the reciever, so she looks like a plane.
I think I recall others commenting about how tight the plugs are in Spektrum Recivers these days. These were damn near impossilbe to fit! It was exhausting trying to force the plug in while not destroying the pins...
I am strongly leaning towards the Evolution 10cc gas enngine, It actually is a dual needle carb, but the needles are on the opposite sides of the carb. It does have a torpedo muffler instead of a Pitts. My LHS has one.... It fits the 44mm on center width of the standard engin mount distance too, so I have already installed the hardpoints. That was nice, not having to customize the firewall and being able to use the pre-installed T-nuts.
I spent the better part of the afternoon trying to get the flaps to match. The servos are just a little off one another. I got them tuned to within 1 degree of each other. I think that's good. I have set the timing to a leisurely 10s full cycle. For some reason the landing gear will not accept a slower than "normal" transition speed. If I set it longer than 0.5s it doesn't respond to the switch. That's fine, its graceful enough.
It will take a few days for the UBEC to get here. And for me to sneak buy the engine...
