Free Flight - Page 41 - RC Groups
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Feb 18, 2013, 07:35 AM
Culper Junior
Originally Posted by TheNightowl
Because this thread hasn't been very active and that was when he posted the picture of his ornithopter.
Oooops...brain freeze.
I thought the posts right before it were from this year, not last year. It's now 2013, gotta get with the program.
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Feb 18, 2014, 10:31 PM
Registered User
Here's my 28" Easy Built Models Corsair in progress. Pretty light so far. I need to buy a scale. I replaced the ribs with lighter wood and doubled the amount. The nose needs to be painted a darker violet as well as the edges of the wing, stab and ruidder. This is not an easy kit to build but having built two Hellcats of a similar design I knew what to expect with this one, which has gone much better. I built up the stab more to prevent warping, in which the two halves are glued onto the sides of the rear fuselage and requires a gluing surface to be built as part of the fuselage. I used a straight edge to monitor the sanding of the surface and marked out the stab edge joint on the fuse so I could get that surface flat for the edges of the stab.

Also my 16" Easy Built Models Fokker DVll. The lower wing dihedral is a little more than I would like but I followed the plan and this is what I got.
Feb 19, 2014, 01:48 AM
Registered User
The Corsair will be set for right hand flight. By accident or divine providence, the left wing has just enough washout, the right wing does not. I am concerned that there isn't enough positive incidence in the wing. The ribs are cambered and not flat bottomed and the wing is placed with an additional 1/6" positive incidence than the plan calls for.
Feb 19, 2014, 01:26 PM
Culper Junior
Nice looking builds. You always have great color choices.

How do you handle the canopies in those kits? I have a few to build and the instructions just say to make a canopy out of thin cellophane liike the wrap on a pack of cigarets. I thought of making a balsa frame and covering it with the cellophane but models with a bubble canopy don't have framework.

What do you do?
Feb 19, 2014, 04:49 PM
Registered User
Hi. Jim. I haven't done anything with clear plastic self made canopies. The Corsair came with a molded one. For those airplanes that don't, I sheet the canopy with balsa and then use black tissue to indicate the glass / plastic. I'd loose points in competition.
Feb 19, 2014, 11:51 PM
Registered User
Carve a block of balsa that is the shape of the canopy. Insert into a thin plastic water bottle . Pull it tight with some clamps as you heat it with a heat gun. Works for me.

Mike 1484
Feb 20, 2014, 11:08 PM
Culper Junior
Carve a block of balsa that is the shape of the canopy

Right there is 2 long sweaty nights of work for me.
Feb 21, 2014, 01:39 PM
Registered User
Just carved one for my Keith Rider R-1 " Suzy". Cut out side profile, block planed the shape ,sand paper smooth, two coats of primer sanded smooth. About an hour to make and an hour to let the primer dry and sand . Five minutes to pull the canopy. I hate making them but it really goes fast once I start. Only power tool I used was a jig saw for the outline , a coping saw is almost as fast. It's a shame to screw up a nice model with a poorly made canopy.

Feb 21, 2014, 04:32 PM
Registered User
Mike, I'm not clear on the plastic to use and just how to form it over the mold.
Feb 22, 2014, 09:23 AM
Registered User
Some plastic water bottles are really thin ,these are the one that I use for rubber scale planes. Cut the bottom off , slide in your wooden plug , pull the plastic down with clamps (take out the slack in the plastic ) and heat it up with a heat gun. The plastic will shrink around the wooden plug .

Feb 22, 2014, 01:26 PM
Registered User
Here are some pictures that may help.
Feb 22, 2014, 02:03 PM
Culper Junior
Those pics make a lot of sense. One question, how do you hold the form while heating it? Or doesn't it get that hot??
Feb 22, 2014, 02:58 PM
Registered User
I just hold on to the clamps and heat it up. Make sure you cut the neck off the bottle . It is very thick and interferes with the front of the canopy. When clamped it looks like crap but you will be surprised how much the plastic shrinks .Try to avoid any laser marks on the plastic , any glue that holds the label on can be removed with lighter fluid . The form should have some extra length and depth to allow for trimming . Go green ,recycle those old water bottles and make lot's of plastic airplane parts .

Mike 1484
Feb 22, 2014, 03:56 PM
White Fang
WBE's Avatar
Brilliant Mike!
Feb 22, 2014, 11:29 PM
Registered User
Thank you very much, Mike. It's clear to me now, no pun intended, Ha Ha. Some of the Easy Built Model kits don't come with molded plastic canopies, not to mention scratch built models.

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