RE: Electric Lanc Build

RE: Electric Lanc Build (Full Version)

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Scott G -> RE: Electric Lanc Build (11/4/2005 5:17:12 AM)
More work on the inner nacelles. You should dry fit the nacelles into the wing way early before all the ribs and spars are glued. If the ribs are too close together it's way too late to fix it at this point. I didn't think of that until I started testing nacelle fit just recently, luckily everything seems to fit pretty well. Some of the CNC cut plywood nacelle sides were a little warped so I created the little "sight" in the second picture. You can see the balsa brace I used to hold it where I wanted while I sheeted. I thought that the nacelles were going to be a bit fiddlier, but they seem to be going together pretty fast so far. scott.

Scott G -> RE: Electric Lanc Build (11/14/2005 4:48:21 AM)
I got waylaid patching up my Top Flite Sea Fury for our clubs fly-in so I haven't gotten much done over the last couple of weeks. Tonight I finally got back at it. I am about half way through sheeting one of the inboard nacelles. One thing I have found is that you should cut all the sheeting that is described in the patterns on the plan a little big since they have to go around curves... scott.

ramcfarland -> RE: Electric Lanc Build (11/15/2005 1:25:12 AM)
Nice build Scott real nice.

Scott G -> RE: Electric Lanc Build (11/19/2005 7:20:31 PM)
Thanks ramcfarland, I have been following your Jug/Flitemetal build thread. I plan on trying that on a Midwest T-6 I won at last years annual club banquet. More progress on the Lanc. I have finished sheeting both inner nacelles. I couldn't resist putting the fuse and wing together for a couple of pictures. The fuse doesn't quite look perpendicular to the wing. It could just be my eyes playing tricks on me. Hopefully it is, if not maybe when I sand the curves in the bottom it will be less noticeable. In the end if that does not work, I could just crank out a new fuse; it was a pretty fast build. Next up gear mounting blocks and wire bending... then she's up on her legs. Scott.

Scott G -> RE: Electric Lanc Build (11/28/2005 6:19:00 AM)
Well, the gear is in. I am just going with the bent wire setup right now. If it flies nice and I get motivated maybe I'll make something that is a little more scale looking. Nothing to report really the gear was all straight forward... scott.

mR JoLLy -> RE: Electric Lanc Build (11/28/2005 7:02:36 AM)
Nice work Scott. For me the moment a model sits on it's own legs is a point of transformation. It begins to take on a life of it's own. I am sure some other builders have similar oppinions when their models become a "living thing". She certainly looks the part. JoLLy

Scott G -> RE: Electric Lanc Build (11/29/2005 5:05:46 AM)
Yeah, the first milestone for me is the wing to fuse join. The gear qualifies too. I got a start on the outer nacelles but more importantly my pilots flew in. Here they are doing a preflight... These guys are Ultimate Soldier 1/18 P-38 pilots. They came with some accessories like oxygen masks and parachutes. I'll put the mask on one so it wont be so obvious they are twins. :) scott.

p2driver -> RE: Electric Lanc Build (12/7/2005 1:18:41 AM)
Scott...good progress on the Lanc and flight crew seem to be motivated. The P6E arrived and the quality certainly justifies the hype. Cheers

Scott G -> RE: Electric Lanc Build (12/8/2005 5:57:10 AM)
I'm looking forward to seeing the P6E fly. That one should be really nice. Finally, the nacelles are framed up. They just need filling in spots and final sanding... Just a progress report and some pictures. No tricky stuff here. I'm a little tired of breathing balsa dust and staring down four cowls doesn't sound good right now. I think I may rig up a test stand for the motors so I can play with them and break them in. Hopefully they will work well with the three blade Graupner's I have taped to the nacelles. scott.

Scott G -> RE: Electric Lanc Build (12/15/2005 6:11:19 AM)
Cowls were next on the list. Since I was making four of them I decided to crank out a little jig to make keeping everything straight a little easier. I just put a straight line on the base and glued on two standoffs of the right height. I then glued a string directly over the line drawn on the base. Finally I glued a “bridge” on that I could clamp the front cowl former to. To build a cowl I tack glue the rear former to the balsa base and clip the front one to the bridge lined up under the string. Then all I have to do start gluing sides on. It took me about 1.5 hours to make this first one; I still need to fill the 1/8” gap. I deviated from the plans on the cowls. I didn’t really like the screws through the soft balsa as an attachment. Also, my gearbox moves my motor back enough that it was going to fowl the cowl screw. So, my friend and I came up with what you see in the pictures. The rear former is cut from light ply. There are two socket head screws that can be reached with a ball end driver through the air intake. I also added two 1/8” dowels as pins on the top and bottom of the cowl to help with rotational torque from the motor. I’m pretty happy with how it came out. Now on to the other three… Scott.

Scott G -> RE: Electric Lanc Build (1/3/2006 4:17:34 AM)
All the cowls are done and I have built the horizontal stab and elevators. I deviated from the plans when it came to the leading edge of the stab since I didn't have much fun trying to get the forward edge of the wing sheeting mated up to the wing leading edge for a good glue joint. So, instead of that pain again, I replaced the 3/16" leading edge with a 1/16 sub-leading edge. Glued the sheeting to that and then attached a 1/8" leading edge to the sheeted stab. I think this method makes an easier build and a better glue joint. The pictures may not show it very well but I sanded the leading edge and trailing edge so the were both the same height. That way I could rest the flipped over assembly on those with some weight during the sheeting process to keep everything true. And a final note: The plans make no mention of it, but the build article in RCM&E does. Build the stab upside down. The article does not mention why, but if you built it "right side up" your stab would have anhedral instead of dihedral... that's my guess anyway. Here are all the pictures to prove I'm not just making this up to pop my thread to the top... ;) Scott. Edit... Oops, missed pictures.

TAZ -> RE: Electric Lanc Build (1/3/2006 6:02:58 PM)
keep it coming it's looking great[:D] Have just found out that my wifes uncle john was a dorcel gunner in a lancasterover the christmas period when we went for dinner.

Woodsy -> RE: Electric Lanc Build (1/17/2006 5:15:37 AM)
Me and a guy at my club are in the early stages of scratch building an all foam 132" electric Lanc', prototype will be a crash and bash with fixed LG and not a lot of scale detail just to iron out any problems MK2 we will take a bit more time and get things right.

Scott G -> RE: Electric Lanc Build (1/27/2006 6:00:12 AM)
Woodsy, You should post some pictures to the thread. It would be nice to see other projects to keep me moving... :) This last month has been busy at work and home so my progress has slowed a bit, but I have been trying to get a couple minutes in each night even if it's just a little sanding or something minor. Tonight I have some pictures of the completed elevator and the beginning of the tail-wheel assembly. I was kicking around the idea of using dual elevator servos in the tail. In the end I just went with the old school split elevator as you can see. As for the tail-wheel, I stole this setup from my Top Filte Sea Fury. The plastic bit is Dubro .40 size mount cut a bit so it will fit between the triangle stock on the fuse sides. scott.

Scott G -> RE: Electric Lanc Build (2/28/2006 5:08:55 AM)
Well, the progress has been pretty slow for quite a while. I'm down to gun emplacements and the cockpit. After that it's on to finishing. scott.

Scott G -> RE: Electric Lanc Build (3/13/2006 5:53:57 AM)
More work on the gun positions. Today it was the dorsal turret. I used some 1/2" balsa as the starting point. After sanding it down to about 12mm of thickness I sanded it to the rough outline of the gun fairing. At that point I taped a piece of plastic over the fuse where it was going to be positioned and clamped it on. I then filled around it with balsa filler. After that dried overnight I popped it of and sanded it until it was pretty close to how I wanted it. During this part I broke the filler and had to repeat a bit of the previous step. Once that was ready I coated the mating surface with a thin coat of 5min epoxy and glued it on. I wanted a little positioning time and I thought the epoxy might make the piece a little stronger. Next, the tail gunner position needs some work and I have some minor stuff on the horizontal stab to do. If I don't slack I could be ready for some fiberglass by the end of the week. scott.

Mike Denest -> RE: Electric Lanc Build (3/13/2006 9:53:26 AM)
Nice build Scott. Too bad you're in San Diego, you would enjoy this. http://www.maam.org/maamwwii.html Featured this year is an honest to gosh ME-109E, Spitfire, Hurricane and Lancaster.

Scott G -> RE: Electric Lanc Build (3/15/2006 5:46:35 AM)
Thanks Mike, the link you provided had a nice picture of the cockpit of that aircraft. It will prove handy if I decide to do much work in there. It would be nice to see one fly but given my location that probably wont happen. I have seen a B-17 and B-25 fly. One of each comes to a local air show each year and sells 15 minute rides. Someday I'll cough up the money for that. I got some more work done on the fuse which is quite close to being ready for a mess of sanding before the fiberglass. I haven't used glass before so I'll work out some of my mistakes on a test piece first. The little black dohick on the fuse is a really small Browning .303. You might have to squint a bit to recognize it ;). I'm going for !QUOT!could be scale!QUOT!, so I don't have any plans to really go nuts on the details. Scott.

Scott G -> RE: Electric Lanc Build (3/20/2006 5:19:08 AM)
I setup all the gear boxes and made a test stand for the motors. I'm worried about current draw and RPM so I had hoped to run everything up tonight. Unfortunately, my local hobby store decided to close a few minutes early so I couldn't get some needed Deans connectors. That didn't stop me from running them up to about 1/3 throttle. I think they sound pretty nice. I'll get the connectors tomorrow and see if I can't make a video. Scott.

Scott G -> RE: Electric Lanc Build (3/21/2006 5:43:29 AM)
Thankfully Hobby People didn't decide to close 2 hours early so I was able to grab some Deans connectors. I'm using a 4000mah five cell lipo pack. This one that I have is supposed to be 7C but if you watch the video you can see it cutting out near full throttle. According to the watt meter that is about 22 amps which should be within the packs 28 amp max. It could also be motor noise irritating the ESC. I'm not sure what yet. I was not able to get an RPM reading because the incandescent lights are jacking with my tach. I'll have to run them outside for that. If you watch the video you can see I get pretty close to 400 watts at nearly full power. If I can keep the model to five pounds that will be about 80 watts per pound which should be plenty for the Lancaster. No vertical for me... ;) Click here to watch Lancaster-Motor-Test This file is hosted by PutFile. I'm not sure how long they let them stay. Scott.

Cubano8 -> RE: Electric Lanc Build (3/21/2006 2:54:36 PM)
I love the sound of those 4 motors going at the same time.

Scott G -> RE: Electric Lanc Build (4/15/2006 5:13:15 AM)
Despite the lack of posts I have been making incremental progress on the Lancaster. I usually can only work a little bit each night after my son goes to sleep. I made a 12" square frame sheeted on both side to practice fiberglassing a little bit. On one side I used some West Systems epoxy and on the other I used Polycrylic, both with .6 oz. cloth. After weighing both, it was clear that the Polycrylic is in the neighborhood of 60% of the weight of the epoxy and much easier to deal with. So, I decided to go that route with the Lancaster. So over the last week I fiberglassed the fuse. It was quite painless and the Polycrylic sands pretty easy with some 220. I have three coats on it now and the weave looks pretty much full to me. So I may just put it aside until its primer time. On to the wing. My first implementation of the nacelles was to use wood screws to hold them onto the firewalls. To support these I put little 1/8th ply backing bits to give them more bite. I just was not happy with these the more I looked at them. So, I opted to switch over to 4-40 blind nuts. Of course the little blocks of ply that were glued to the back of the firewall were too small to work with the blind nuts. Yay. So my computer donated a couple of bits that I butchered to pry and sand down the backs of the firewalls (I could only access them through the 1" motor hole). Todays Lesson: Don't glue things to near inaccessible regions of your airframe unless you are sure you want them there. Now I am just sanding and filling on the wing. Once I get that done I will use some Nelson lightfab on the open bottom and fiberglass the nacelles and top. Here come the pictures, Scott.

Scott G -> RE: Electric Lanc Build (4/21/2006 6:00:41 AM)
I have started the fabric covering process. I am using Nelson Hobbies LiteFab. This is the natural color, no paint. It's pretty nice to work with so far. I would say it is a little easier to get around a wing tip compared to Monokote. Once I get the bottom of the wing finished I'll be moving on to glassing the nacelles and top of the wing. I also have the rudders and vertical stab to fiberglass. Then I am down to a little cockpit/gun position work and some paint. Scott.

Scott G -> RE: Electric Lanc Build (4/27/2006 6:04:06 AM)
The Nelson LiteFab is all on. I am now working on fiberglassing the rest of the plane. Tonight I did the two outer nacelles and the center section. This is the first time I have fiberglassed a plane and I am amazed at the corners that this stuff will go around... With any luck I can get all the fiberglass on by the end of the weekend. scott.

Scott G -> RE: Electric Lanc Build (5/10/2006 6:47:37 AM)
Fiberglass - polycrylic - polycrylic - sand off extra fiberglass - polycrylic - sand - polycrylic - sand - polycrylic - sand ... Rinse - wash - repeat. Pretty much thats all I have been up to for the last couple of weeks. I'm down to some final sanding and I need to fiberglass some hatches but the majority of the airframe is fiberglassed. I moved on to cleaning up some of the sub assembly joints. The photos below show the process I used to clean up the wing to fuse join. I used Monokote as the parting agent and glopped some 5:1 micro balloons/30 min epoxy on the saddle. Wait a day ... breathe a bunch of epoxy dust while you sand ... next thing you know you have a nice joint and black lung. scott.

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