The "Silver Lining" a start

Ducted fan...............I ain't even tryin' that!!!~

But,

rdw777 wrote:Thanks Bob, It’s a fun little project

I located the bell crank opening center about 1/8 forward of the lead out guide center for a little line rake….The article states not much off sets are needed but does mention some fin off set and also keep the weight forward….. It also said they never built the 1/2 A version so we are a little on our own here….
I think if you hang and balance it like you did on the P-26 should get in the ball park

Robert, I never did find (or could not load) that Kitten article. Is it basically the same plane and what you are working from? I know the Silver Lining has a sourse, but thought it was expanded from someones imagination.

Funny you mentioned ducted fan. I think it was in and around 1970, my dad used a large Hawaiian punch can as the fuse with the bottom and top removed. Using the bottom, he cut it in half and that was soldered onto a piece of music wire which was the elevator internally. The engine crutch held the engine bellcrank and gear wire which was a pine block. For the life of me, I kick myself for removing that engine and never trying it myself. I witnessed it running one time and it was very fast. It would come off of the ground and back to the ground.
    I still have that TD .09.

Hi Bob, I have been referencing the Manx Cat plan and article on OZ…

https://outerzone.co.uk/plan_details.asp?ID=3402

It mainly deals with the larger size version but does show a simple view of a 10” version as well…. It’s not exactly like the Silver Lining but close…. I give the SL about a 50 - 50 chance between kit or scratch built… Just hard to tell….Maybe someone here knows more…I have never seen a kit advertised but the article was a little before my time… 1957….Best guess is maybe it was a sort of random kit and mom helped the son paint it…. Purely speculation…I guess I say that remembering my mom painting my pine wood derby cars…

Did you get my reply to the PM?…I’m not sure of the difference of Out box and Sent box on my side

More fun with SL tomorrow…. You know it lured me away from my pending RC build LOL

Robert

Your build looks to be progressing really well bob Ive attached some photos of my built up version. Its pretty rough a bit like the uncle no one in the family talks about. I am going to have to wait for my Lad to be around to launch it, I dont reckon it will launch well from the launch table/stooge Ive made. I have a suspicion the flight may not end well anyway, when it runs out of fuel and has to land, and I am going to try really hard such that the landing is not an unplanned powered landing. First flight anyway. thanks to yourself and the others that have contributed plans. drawings, links, stencils, photos, ideas, as its certainly distracted my attention from normal stuff to a very fun build and hopefully it flies.

I think the ducted fan sounds like a great idea! Ive so often thought about building one as they seem so different, but it does my head in thinking how I might do it. I sort of get started a bit and then dont progress on it. ( Yet! ) Ken, I like your story as to the ducted fan your father built Ive read stuff about them on other forums and websites and its mostly been negative, but Im not too fussed if its the best or worst way to power a vehichle with a Cox or any other Nitro engine, just more interested in doing it and mucking around with one because its different.







Yabby

Looking good Yabby…. Yes, Silver Lining redirected me a bit as well…. But a fun little build… Besides, I don’t have a double winger in my hanger!!!

On the other end of the SL spectrum, A little progress on the no wind/short line version…

Thanks Robert, I got your Manx Cat link, saved it this time so it won't go missing.  Yes, just answered your PM.

Looks like your electric is nearly ready to go.  I'm eager to see how it flies.  I'm stuck on my bellcranks location.  If I wasn't set on duplicating the Silver Lining I would just hang it as normal under or above the wing.  When I'm unsure I just stop, so it sits.  But eventually I will cut a slot for the bellcrank and mount the pivot pin vertically.  I can always fill it back in and mount it under wing.

Mounted wheels (for now) and added a prop to get a better CG.  Almost back to square one.




Good job Yabby, now I understand your bellcrank installation.  Unique!  Safety tipped yellow prop and with that engine it should really haul.  Post flight, have your Lad standing by with smelling salts and a spanner ready to unscrew you from the ground.  

Bob

BTW, love those pins.........tacking the wing on temporarly? And the light weight wheels. Wierd propeller. Got a head-on view?

Thanks Bob, Yes, those props are weird, Course they were on a cheapie drone… They’re actually nice quality…. They have a set screw instead of just push on….I’m using the left hand set from the drone for what it’s worth…. Yes will get that head shot next shop time…
Yes, the pins were just for mock up… Still have a way to go…The wheels were in my junk parts box from a long time ago….They are made from 1/16 lite ply….Contemplating a very light weight white base coat… Been raiding my wife’s craft paints and watering them down…
Shhh!!! Don’t tell her      

I think you’re fine with the BC near the middle of the fuse… Just brace that pin good on the inboard side…. The MC plan shows that location just a little below the thrust line… Probably to help keep the outboard wing down…. Just guessing, I’m just a would be CL guy…

Interesting set-up Robert, that motor has to be light as a feather. What type of battery are you going to use Lipo probably and where are you going to place it?

My son's foam AT-6, a great little flyer. Lipo is next to nothing in weight also. I once nose dived it into asphault, rearrainged the motor and continued flying.




Bit the bullet and cut the opening for the bell crank. Rough around the edges but sanding and spackling will fix that. Epoxy the pin in and cover with filler. But before I do that I will have to install the music wire lead-outs (per original) and the guide. Will be about the last thing to go in.









Seems like I use every tool in the house to do even the most simple thing.

Yes, Single li po… I’m sure similar in size also with the motor/gearbox in the AT-6….Timer goes on the other side…It has a micro switch I will try to trip with a wiper on the pushrod…It’s actually intended for free flight ….Times in 10 sec intervals up to 50 sec depending which resistor is being used..,




Not a lot on the web on tiny CL biplanes but this is an interesting read..

https://outerzone.co.uk/plan_details.asp?ID=8169

Larry Scarinzi designed the Queen Bee. Larry is a friend of mine. I built a Queen Bee and we flew it at Brodak's when Larry was present. he signed the wing but I never cleared it. It somewhat ran a bit. Larry is sadly no longer flying. He was flying about 2 years ago. We generally get together for the New Jersey Combat Festival in September. I'm up in the air about this year as I have no new models built. My Queen Bee is good flyer, sadly though the Pee Wee carries little to no fuel.

That’s really cool Ken, He sounds like a colorful fellow…. The descriptions of his flights with the QB sound very entertaining…. Thanks for sharing your experience with the QB and its designer

Neat little plane, eleven inch span, open cockpit, I like those and Bipes wear them exceptionally well.

Launched with the engine running backwards and recovered with no damage. Wish I had been there. I can't say that I have ever done it, seems it would be near impossible not to notice. Maybe instead of a second S/L one of those.

Near ready for assembly. Final sanding and rig the elevator control rod and that's it. Paint every individual piece a light coat, assemble and hit it with a final coat then trim. Built in bell crank complicates things with the Z bends, think I will have to attach both ends then slide the tail assembly in and position.

rdw777 wrote:….Times in 10 sec intervals up to 50 sec depending which resistor is being used..,

Did you build your timer?  I've built a number of circuits using the 555, but this seems to have a much lower parts count and is a simple digital switch. I'm guessing this circuit triggers a MOSFET (or high current transistor) by charging a capacitor then drains the cap through the resistor until the MOSFET switches off.

Andrew, No I bought this one from the Williamett Modeler’s Club in Oregon…Got interested in E-20 free flight for a while…. You are correct in its operation, Initial trip of the switch charges a capacitor and chosen resistor regulates discharge and output thru the MOSFET….. Penn Valley Hobby used to sell a kit you had to assemble and I did do a couple of those some years ago…

I’ve done a project or two with the 555 timers as well…There was some guys on RCG about twenty years ago hacking those micro Zip Zap RC cars from Walmart and making the electronics fly a plane…Steering was strictly binary so we used the timer and a pot to pulse the right-left signal from the transmitter making poor boy proportional….Also changed out two surface mount MOSFETS on the RX throttle output to handle added power of the of a bigger motor…. I still have one of the actuators I made for these planes

We fooled around a bit with MOSFETs back in TD-A school when I was in the Navy.

Sounds like your rig Robert is a modern version of Escapement, or George's avatar Galloping Ghost?  I have a couple of them, fun to watch.

https://www.bing.com/videos/search?q=galloping+ghost+actuators&qpvt=galloping+ghost+actuators&view=detail&mid=7A75A31B36E54456A1097A75A31B36E54456A109&&FORM=VRDGAR&ru=%2Fvideos%2Fsearch%3Fq%3Dgalloping%2Bghost%2Bactuators%26qpvt%3Dgalloping%2Bghost%2Bactuators%26FORM%3DVDRE

Both you and Andrew are probably well familiar with them.

A little more progress on the S/L.  Cut the elevator control rod.  Always a touchy situtation for me. I still have to trim the bitter ends and make the decision which to install first, the bell crank or the elevator pivot.  Can't do both and epoxy the tail section in permanently.

rsv1cox wrote:..............Both you and Andrew are probably well familiar with them...........

A little more progress on the S/L.  Cut the elevator control rod.  Always a touchy situtation for me. I still have to trim the bitter ends and make the decision which to install first, the bell crank or the elevator pivot.  Can't do both and epoxy the tail section in permanently.

Your build looks to be coming along quite nicely -- finding solutions (bell crank or elevator) while building is what makes it fun!

I learned to fly RC using a Controlaire TX, Rand Galloping Ghost actuator and a receiver that I built while in college.  The plane is long gone, but I still have the TX, RX, actuator and Enya 15 III engine.

Bob, Yes sorta similar to Galloping Ghost..The actuators were a magnet that was hinged so it could move inside a copper coil…. Pulsed to get an average rudder position… I’ll photo one next shop time..

I’m at the same point on SL….Think I’ll connect BC first and leave the wiggle room to find center in the control horn as the glue is setting …

Love that old transmitter Andrew…. And built from a kit!!…. Those were fun… Mine was an Ace Digital Commander … Wish I had kept it now…

Robert

Yes, if you cement both the control horn and the bell crank in there is no way you can bend/twist those L shaped ends into the holes.  Although I have used threaded cleavises for my R/C planes which would work here and they would be adjustable for length.  Just not what the original builder used.

Really debating whether or not to paint the face of the engine mount.  I like the natural mahogany look.  

Getting closer.  

My first, I built a four channel Blue Max kit.  Put it in a big Lanier low wing monoplane.



Ah, found a picture of it on-line.

rsv1cox wrote:My first, I built a four channel Blue Max kit.  Put it in a big Lanier low wing monoplane.

Ah yes, the infamous Lanier ARF's, I remember those from the 1970's. I bought the Pinto, their 50" wingspan shoulder wing 3 channel, but gave the unfinished kit to a friend when I got my first job out of college and moved to California back in 1982.

rsv1cox wrote:Ah, found a picture of it on-line.

It is interesting how by deja vu we encounter this same topic 7 years later.

https://www.coxengineforum.com/t8740-cox-sanwa-radio#111141

GallopingGhostler on Sep 08, 2015 wrote:Bob, I'm not familiar with that kit radio you built, but the Vintage R/C Society (VRCS) or someone on the Ace R/C Yahoo Groups site would probably be able to give you more info on that radio. Not to hijack this thread, but this is the Charlie's R/C (Cannon 810) kit radio that I built in the late 1970's.


I've been considering doing a 2.4 GHz conversion on it for nostalgia sake.

Never did the conversion, but I think that those kits may no longer be available. Could be mistaken, but I heard that the US Gubmet a few years ago had a lawsuit with huge fines with Hobby King over those.

Paint, two light coats.  "Paint and Primer in one" Paint stick idea ripped off from Kim.  Decided to mask off the engine mount.  Assemble and lay the last coat.  To damp to paint outside.