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Skyline. 2m F3a Bipe

Old 05-28-2019, 03:55 AM
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workers
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Default Skyline. 2m F3a Bipe

Some pics of the early stages of my new build. Based on my last monoplane, but with 2 wings.


Old 05-28-2019, 05:18 PM
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flywilly
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Very impressive! The structure looks quite light weight. Did you do your own laser cutting or outsource it?
Old 05-29-2019, 05:56 AM
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workers
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No i draw it then send it to Belair (uk) to have it cut. Would love a laser cutter but money and space wont allow 😀
Getting on with sheeting now, done the easy bit. Just got to deal with the planking.

Old 05-29-2019, 12:43 PM
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flyintexan
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Very nice work. What thickness sheeting for the fuse...same for wings/stabs?

-mark
Old 05-29-2019, 11:43 PM
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workers
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Thanks Mark. 3/32 all round on this, not gone for contest grade this time, for cost reasons. These sheets are coming out about 21g for a 36"x4" sheet.

Couple of pics of the motor mounting. I've designed in a shroud to try and help with cooling. I know these motors can run a bit warm!!
Old 06-02-2019, 04:26 AM
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Very impressive work. Was just getting a reply from flywilly regarding his results with the Myvec files and he sent me this link. I've been on the fence about the Neo Stage Bipe for a month or two. Any interest in offering files for this one? Thanks, Ted.
Old 07-14-2019, 05:12 AM
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workers
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Finally finished planking the top/front of the fuz and managed to release the canopy. Pretty pleased with how it came out

Old 07-14-2019, 12:18 PM
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Nice work, much appreciated!
👍
Old 07-14-2019, 05:23 PM
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Ricardo M.
 
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Great work so far.
Old 07-14-2019, 11:09 PM
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Just beautiful, great work Dan !
Old 07-15-2019, 07:44 AM
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workers
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Thanks Guys. Alex, if i got to half of your building skills, i'd be very happy!
Old 07-15-2019, 07:06 PM
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CHassan
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Good golly Mrs. Molly! That is some fine looking workmanship!
The form looks pretty rockin too!
Old 07-16-2019, 07:25 PM
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It's a shame to cover up that intricate structure. Need to figure a way to sheet it in clear! Very impressive details.
Old 07-18-2019, 02:44 PM
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grotto2
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Wow! All I can say is just...wow!
Old 07-23-2019, 05:07 AM
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workers
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Fuselage is pretty much complete now. Just the rudder to cut out and face.
Planking the bottom of the nose was very time consuming, each piece had to be shaped and soaked to bend up to the nose ring. Also aliphatic meant only 2 strips at once. Worth it though, even with a rough sand its come up nice.


Happy with weight, its 880g at the moment with the canopy, so prob be about 900 when its cut out and hinged. So its about 20g lighter than the old one, without using contest grade balsa


Old 07-23-2019, 09:31 AM
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Few pics of the finished fuz
Old 08-02-2019, 03:37 PM
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Nice work. BTW, should I send my shipping crate to you this week or next? Be sure to pack it carefully for the trip across the pond. It's awesome that you've offered it to me...…..LOL. Keep up the good work, Ted.
Old 08-28-2019, 07:58 AM
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workers
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So the airframe is pretty much ready to cover now, hoped to have had it flying for the next comp but that seems unlikely now. Small things like checking the wings are square seem to take ages, especially when you cant put it together easily in your shed! Cutting ailerons out was also a pain, mainly because theres 4.
Not too many pics of the wings, but heres the ones i took.


Old 08-28-2019, 08:02 AM
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The wing structure was glued to the bottom sheeting as a whole, then each half had the top sheeting glued on seperatley. I used a jig top and bottom, weighed down, which i've done with all my wings. As long as the bench is flat, so should the wing.

Last edited by workers; 08-28-2019 at 08:04 AM.
Old 08-28-2019, 08:05 AM
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Tail is very basic when there's no elevator or servo
Old 08-28-2019, 08:13 AM
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workers
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So this is where its at at the moment, bar the ailerons and rudder being cut out

Old 08-28-2019, 09:12 AM
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Realy nice looking. What is the engine trust angle?
Old 08-29-2019, 02:03 AM
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workers
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So it been built with 2.5° right thrust and 0 down thrust. I trim my models out gravity neutral so i expect the down thrust will only need a little tweaking to hold a vertical up line.
Right thrust was just a guess really and may need moving a lot, it might not.

Dan
Old 09-09-2019, 02:04 PM
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Got it finished and flying this weekend. Had 4 flights with it yesterday, even managed a p19 with it on the last flight.
Very pleased with it so far, bit of work to do with it re rudder trim but apart from that its great.
As with most biplanes, rudder is very powerful making rollers and ke manoeuvres a lot more stable and easier to control. Problem is the powerful rudder control it amplifies any unwanted yaw trim.
It was very calm aswell so will be interesting to see how it performs in the wind.



Old 09-09-2019, 03:58 PM
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wattsup
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Congratulations! The color combinations you chose are simple and stunning. I have really enjoyed following your build and wish you continued success.

Last edited by wattsup; 09-09-2019 at 04:01 PM.

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