MSComposite Swift II - Page 59 - RC Groups
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Mar 07, 2009, 03:56 PM
Registered Aircraft Offender
Truglodite's Avatar
Originally Posted by erozion
Is it necessary to add carbon rods to stiffen the wing? if so which thickness and where?
What motor/batt combo are you planning on using?

The Swift I built for my buddy uses a relatively efficient and lightweight 180W setup, which I figured would flex quite a bit at WOT without reinforcements. Probably wouldn't be my first choice in power setups, but I had to make it work well, so I used reinforcements; an 11" long 1/8" tube across the root, 3/16" wide strips down the chord line, and Henrys/3m90 at the root to tie the chord spars together and stiffen the motor area. This brought the AUW to 10.7oz. I estimate I added 1oz with all the tape/fg/spars, but if I didn't reinforce I'm pretty sure the pilot would notice the effects of wing flex during harder turns, which would more so damper the fun IMO. (FWIW, I prefer pattern style flying)

On the other hand if I was given a 100W "floater" setup, I would've not used anything but a 1/2" tape strip down the LE for longevity, which would bring AUW to the 8oz range. With that kind of power and weight you just don't have enough loading to produce noticeable flex, so reinforcements are unnecessary. Also, with minimal excess power, extra weight is more noticeable to the pilot.

I'm no definitive expert on Swift's, but I know there are several better designs for a fast wing. Most ppl view the Swift as a wing that is best kept slow and light. That's why you see so many 100W ish setups without reinforcements.

Hope this helps you decide which way to go.

Last edited by Truglodite; Mar 07, 2009 at 04:11 PM.
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Mar 07, 2009, 04:09 PM
GFBurke's Avatar
I'm @ 166w. No added spar.
Just a little reinforced tape on the LE of the wing.
Mar 07, 2009, 04:29 PM
Registered Aircraft Offender
Truglodite's Avatar
Hehe, I guess a better answer would have been: "No"

BTW, what setup are you using GFBurke, AUW?


[edit: FWIW, I'm getting about 16oz static thrust. I added detailed motor info to my original post. link]
Last edited by Truglodite; Mar 07, 2009 at 04:36 PM.
Mar 07, 2009, 04:38 PM
GFBurke's Avatar
Well, I have yet to maiden too.. soo....

14.6A @166w with 8x4 GWS HD prop
308g RTF (with lipo)

Review is about done.
Mar 08, 2009, 03:01 AM
Registered User
im using a dual sky 1300 3s SL battery and a dualsky 2830ca 1450kv motor with 8x6 prop? it flies fine now but i can see alot of flex.
Mar 08, 2009, 03:05 AM
GFBurke's Avatar
YIkes, that's pulling some As!

Mine is only a 1200KV, and I tested with an 8x6 prop:
18A @ 204w with 8x6 GWS HD prop
But only have a 15A ESC, so I bumped the prop down.
Mar 08, 2009, 03:08 AM
Registered User
it goes like a little rocket but just worried when the wind picks up i can see alot of flex in the wings. i have a 25amp esc
Mar 08, 2009, 07:55 PM
3D wannabe
smokejohnson's Avatar
Woohoooo!!! I love the Swift Man does that thing fly good. I'm not sure on my flight time yet but it is on video so when my buddy downloads it tonight we will see how long it felt like around 10 minutes. Not unlimited vertical but more than enough to put a big ol' smile on my face . I'll provide a link to the video later.
Mar 08, 2009, 07:56 PM
GFBurke's Avatar

We sooo where about to toss the SII up. Had it in hand, HD cam rolling. BAM snow and hard wind.. wth..
Mar 09, 2009, 06:19 PM
3D wannabe
smokejohnson's Avatar
My flight time was not near as long as I thought...looks like it was around 6 minutes. I did spend most of the time at 3/4+ throttle but...I think I will lose the 4 quarters (almost an ounce) of dead weight in the nose and go with a larger pack.

James' Swift Maiden (6 min 52 sec)
Mar 09, 2009, 08:25 PM
More Trim
More Trim's Avatar
Did well. Good flying.
Mar 10, 2009, 06:58 AM
3D wannabe
smokejohnson's Avatar
Thanks MT
Mar 10, 2009, 09:39 PM
Registered User
twister782's Avatar
Originally Posted by smokejohnson
My flight time was not near as long as I thought...looks like it was around 6 minutes. I did spend most of the time at 3/4+ throttle but...I think I will lose the 4 quarters (almost an ounce) of dead weight in the nose and go with a larger pack.
Smoke!!!! Way to go great flying!! nice job for a maiden. Gotta say that has to rank in the top 5 swift cameraman jobs I have seen. He follows the plane smooth and zooms in and out. great filming.
Mar 10, 2009, 09:48 PM
Not your average DiggsyBear
Diggs's Avatar
Great maiden flight! How did you like it? Try some nice low and slow flybys once you get comfy with her and be amazed at how nice and slow it can fly.

Mar 10, 2009, 09:54 PM

maiden flight of my new swift II

I am very new to rc. Have had a couple of easystars that have seen better days. I am not an experienced pilot. Mostly crash and rebuild even with the easystar which is supposed to be the best beginner plane. I have had poor results.
I built this little swift II about a week ago but its been windy ever since.
Took it out today and could not believe how easy it was to fly!!
It may not be a starter plane but when it is set up right it flys so easy and stable. It was truly a thrill. I'm sold.

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