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Apr 19, 2010, 12:37 PM
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Tomalak's Avatar
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Build Log

Selifun XP


Hello everyone !

May I present to you the " Selifun XP "

Status : maidend, on duty

Wingspan : 100cm
Lenght : 100cm
Motor : BlueBird BLM-12mm 1300kv
Prop : 8x4.3
Power : reduced to 160Watt due motor limits
Lipo : 3S 1500mAh
take off wight : 530g ( overwight to the plan due bigger motor & lipo )
CG : 6,5mm from leading edge

But first : Special Thanks to http://www.jk-modellflug.de.tl for the plans and building tips.

Great page for building fomies! And also this page, the plans and the videos are in german, most of it is easy to understand just while looking at it.
Otherwise just ask here.

Plans for this plane are here : http://www.jk-modellflug.de.tl/Selifun-XP.htm
( Behind "Hier gibt es den Bauplan für den Selifun als Download" )

His build looks far better, but at first, here's mine :
Last edited by Tomalak; Jun 03, 2010 at 09:33 AM.
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Apr 19, 2010, 01:45 PM
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Look really good, and makes me wanna build one. I look forward to see it on a maiden flight. Be sure to have someone with you to film it, and upload it on youtube. Good luck
Apr 19, 2010, 02:21 PM
Registered User
that looks really nice. i really like the shape of the nose and the bubbly cockpit. looks slightly like an edge.

last time i spent that much time on a full-fuse built up wing plane i didnt have great results...sooooo, good luck on the maiden!

- Jeff
Apr 19, 2010, 04:52 PM
Zen in the art of foam
djacob7's Avatar
Excellent workmanship!
What is GFK weaving?
Apr 20, 2010, 11:27 AM
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Tomalak's Avatar
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Quote:
Originally Posted by djacob7
Excellent workmanship!
What is GFK weaving?
Thanks!

I don't know the correct translation. What about "Glass fibre weaving" ?

I used this for the landing gear, 10 layers.

http://www.conrad.de/ce/de/product/8...archDetail=005

By now i would recomend > 200g/m2 an less layers
Apr 21, 2010, 09:01 AM
Zen in the art of foam
djacob7's Avatar
Thanks Tomalak!
Apr 21, 2010, 04:46 PM
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Tomalak's Avatar
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Two things to add :

First :

What could not be seen : The nose got two air intakes for cooling ( see pic ) and the end of fuse is also open on two places . I hope it will be enough.

Second :

Iwas very suprised of the durability of the wing!
I thouht 4 pieces of 3mm depron with a balsa spar on each side glued together would'nt last long. But combined with this fibre tape ... wow!
Apr 22, 2010, 02:23 PM
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Sorry folks, there was time, weather but no camera man ...

I maidend


It started, it flew, it landed and it survived

Because I'm still very new to this, so i can't really compare, but in my opinion It goes great ... way betteer then my Mo-109 witch is slightly under-powerd.

I needed only 1/3 throttle to keep it in the air, very good lift ... and therefore 2/3 of pure fun left

Landing wasn't 100%, with light wind from right i missed the street and let it drop into grass with out any damage.
I think it was a good idea to use fibre weaving in the inside to strength fuse and bottom ( pic will follow )
Last edited by Tomalak; May 24, 2010 at 09:12 AM.
Apr 25, 2010, 07:35 AM
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Not in the original plan, but i think it makes the plane more durable with only very few extra wight
Apr 29, 2010, 03:15 PM
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Found a weakness : I lost the tailwheel after landing. Now it is glued back in place and also fixed with tesefilm ... should think about another way of attaching it
May 13, 2010, 11:44 AM
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Still no one at the camera, but I found a solution

(due this solution quality isn't best )



Link to Selifun XP 4th take off and flight Video


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