Another TF P-47 Build
#51
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ORIGINAL: raptureboy
This site really stinks. I have been trying to post 2 lousy pictures since last night and it still times out.[:@]
This site really stinks. I have been trying to post 2 lousy pictures since last night and it still times out.[:@]
#53
Well, hallelujah! It's about time. The pics are of my servo setup to actuate the cables to control the bomb drops on the wing pylons, I am using a micro servo. There's nothing like a fully loaded jug
#56
Yes it is weird; I don't usually have issues except for the occasional time out issues. I’m working on the layout of the gear doors now and will try to lay some glass down using the monokote technique. I'm at work now( got a little down time)
#58
I'm sure your welcome, though it's not my thread. Hey it looks like your operating under a low cloud ceiling. How many times do you bump your head?
Looks good so far.
Looks good so far.
#64
Back again with some more updates. I’ve been working on making gear doors all week, laying up fiberglass and fretting over some details. Not a lot to show for the week but I’ve had other things to do. I laid down some monokote on the wing in the gear well area and then put down four layers of 5oz cloth with epoxy resin to form the blank for the doors. I made a paper template of the wood gear door parts that come with the kit and then traced them on top of the fiberglass. I first heard of this process from the book RC finishing and detailing available from Model Airplane News, but it’s a pretty common technique describe here in the various threads. After laying them out I removed the fiberglass as one big piece by slowly prying it loose using a thin bladed plastic artist spatula. I will rough cut them out and then finish sanding them to the line, lay them on the wings again and cut out the balsa. I haven’t worked out how I will attach them yet or operate the inner doors. In the mean time I had to do something else because I needed to see some real progress so I spent a day working on my P-40 arf from Topflite. They really do a nice job for an arf.
#65
The blue stuff you see in the pictures is a autobody spot putty that I thin out and then brush on the fiberglass to fill in the weave after the epoxy has cured. I then sand most of it of with 80 gritt paper then wet sand with 120 grit and then finally with 220 grit. Hit it with some primer to show where th low spots are and then some more sanding and touch up with spot putty and then more primer and .... you get the idea lots of work[&:] but when your done it looks great. Here are the final results
#66
I had a PM from a fellow Jug builder wanting to know about the setup for the bomb drops so I'm adding a few pictures. If you are building yours stock you will see on the plans that there is a servo next to the aileron servo used for the drop tank. On my last Jug I used it to operate the bomb drops on the wing pylons, but since I modified this one for scale gear location I had to relocare the servo and I decided on a micro servo to operate it I used some left over inner nyrod to run some very fine music wire over to the pylon locations and then up through the pylons to the bomb release. Its really quite easy to do and adds to the fun factor
#68
Hey all, what’s going on? It’s been kind of quiet here lately. I’ve been busy working on both my 47 and my p-40. I pretty much have the whole basement so I’m going back and forth. I’ve gotten my gear doors and wells cut out, and I’m working on the hinging now. Here are a few pics to go along. I will be adding some more here soon
#69
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<font face="Verdana">I ended up going backwards today

I made great progress getting the stab and fin fitted to the fuse and aligned this weekend. I got everything true and square and ready to go. I even picked up a Robart incidence gauge and used it ensure that the stab had the proper +1 deg. incidence angle. I mixed up the epoxy and got everything glued up and fitted into place. Now I start to worry because after 90 minutes (using 30 minute epoxy), the epoxy left over in my mixing cup is still soft and tacky and shows no sign of kicking. I hit the cup with a little heat and the epoxy immediately turns runny, so </font><font face="Verdana">I convince myself that I did not add enough hardener.</font></p>
<font face="Verdana">I know that 30 minutes epoxy takes about 8 hours to fully set up, and that there is some forgiveness to the mix, but I decided that I’d rather be safe than sorry, so I pulled everything apart. Of course, this leaves me with a big sticky mess to clean up. I got most of it cleaned off by heating it up and scraping it off using single edge razor blades. While doing this, I managed to cut my finger and did not notice that it was bleeding until I saw blood stains on the balsa!</font></p>
<font face="Verdana">I think I have everything cleaned up with only some minor cosmetic damage. I am off to North Carolina again this week, so I won’t be able to try again until next weekend. </font></p>
#70
[:@][:'(][:@][:'(] Been there done that! Sorry to hear of your travails. Man I glassed an entire plane once to not have the polyester resin kick off all the way and it stayed sticky. Turned out the hardner was old and lost alot of it's reaction. I had to go over it all again with a fresh batch and then sand my butt off with 60 grit paper. Then there's the time I mixed equal parts of resin + resin[:'(] Hang in there it will get better.
#71
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No progress this again weekend
[img]../../punymce/plugins/emoticons/img/trans.gif[/img]!
This time I got roped into helping out with set construction for my daughter's high school play. I knew this was going to be a long slow process, but now I'm starting to fell like it may never end ...
[img]../../punymce/plugins/emoticons/img/trans.gif[/img]! This time I got roped into helping out with set construction for my daughter's high school play. I knew this was going to be a long slow process, but now I'm starting to fell like it may never end ...
#72
Aw man, I remember those days. I have done very little myself this week. Yesterday was a real bummer. I was going to the WRAM show in Jersey and ran into a guy who decided to slam on his brakes last minute at a light and the roads were wet from snow, and I slid right into him totaling my van.[:@] I must have slid 100 ft. No one was hurt but now I'm out a car and even worse I have to go car shopping which I hate[:'(][:'(]
#73
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That sucks! Glad to hear no one was hurt though. Actually, I am one of those strange people that actually enjoys car shopping. As long as you go in with the attitude that the dealer wants to sell you a car more than you want ot buy one, you can have some fun and make the salesman earn his commision!
#74
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<font face="Verdana">I have recovered from my misstep from last weekend and made a small but critical step forward this weekend by getting the Stab and Fin glued onto the Fuselage. I have included a few shots of the dry fit up step before my epoxy fiasco from last weekend. </font><font face="Verdana">In order to get a good wood to wood bonding surface between the fin and stab, I glued a small scrap of balsa to the bottom rib of the fin. In hindsight, I wish</font><font face="Verdana"> I had thought to drill holes in the the fin and stab ribs to save a little weight.</font>
<font face="Verdana">
I convinced myself that my problem from last week was not a bad mix of hardener into the epoxy, but rather that the temperature in my basement workshop was just too cool. My small space heater only gets the temperature up to about 55-57 deg. F in the winter. Comfortable enough to work in, but 15 deg. below the recommended minimum cure temperature for the epoxy I am using. So this weekend, I moved upstairs and set up on the dining room table (with plenty of newspaper). All went well, and the epoxy kicked over just as expected.</font></p><font face="Verdana">
<font face="Verdana">The postman showed up with a few goodies this week too!</font></p></font>
#75
Great. Glad to see all is back on track again, I spent last week trying to recover from my car fiasco and looking for a new plane hauler. I hope to have something this week and then I can get going again. I have a feeling spring is coming early.



