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This thread is privately moderated by phil alvirez, who may elect to delete unwanted replies.
Feb 11, 2017, 03:13 PM
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my 2 meters sailplanes-Maverick 1


now that i have all my planes ready until the weather-and my health-(will have surgery so have to wait until fully recovered) let me fly them, the time i have will use for things like providing details on my 2 meters sailplanes, which is what am doing, and expect to keep doing.
all started with the idea of using a nice foam or glass fuselage and designing a wing and tail for it.
1.-i found the foam Dynamic from hobby king, that fitted the dimensions and was available. it is for a wing on top, and came with the wiring for servos at the tail, which was 1 of the things i was thinking of. it was for v tail, so i modded it for t tail, which is the 1 i like best.
i named it Maverick. 2 meters built-up polyhedral wing, spars over/under; solid balsa flat stab. 35 mm diameter motor, 3 cells 1300mah, folding prop.
(more details down here). as it flew to my expectations, i ended up getting another, and made it with a lower t tail, otherwise the same.
with an already made fuselage i got a lighter and stronger plane. am pleased with the performance, and am able to thermal and stay there for a long time, weather permiting-even in near freezing temps. see pics here:
https://www.rcgroups.com/forums/thum...one&starter=no
here are details from my blog.
Maverick started with the availability at the time, of the fuselage/canopy/prop/spinner of the Dynamic-s, a hotliner with v-tail
i used the prop/spinner that come with it, and found a motor that looks close enough to the stock.
but the main difference is that i designed it for thermaling, with a larger wing, and t-tail instead of the v-tail.
as the v-tail comes with a wide base that works well for a t-tail, and the wiring for the servos, it made my life easier. mounting the wing on top, too.
the tail instal is similar to the Thermalis, except that there are no belcranks, and the elevator servo sits up near the stabilizer, with a direct-and short-pushrod that provides precise commands. the rudder servo sits at the bottom.
the wing is 8" chord and 5" tips, undercambered airfoil, and uses an over/under spar of 1/8x1/4 spruce with 1/64 ply webs, and 3 turbulators; the leading edge is 1/8 cf tubing with 1/8x1/4 balsa, and the trailing edge is 3/16x3/4 balsa. ribs are 1/16 hard balsa, has 1 center section flat, and is held in place with 2 nylon screws that fit into the stock mounts in the fuselage. the covering on top is transparent orange solarfilm and transparent red ultracote lite tips, the bottom is clear microlite.
>>>an update: i noticed that as sometimes it got the flutters at climb, i uncovered the bottom of the 3 main panels and added 1/16" diagonal ribs from the spar to the rear. it helped, but not completely, so replaced the covering with transparent (not thin) ultracote and helped even more. still sometimes it does, i think due to the mighty motor, so dont run it full throttle. really, it does not need so. about 50 to 70% gives a fast climb to 200 meters in 30 seconds. enough to reach the level where i find thermals.
i found the motor 35-36/910 kv, that weighs 117 grams, the closest to the stock, and it works fine. it delivers an enormous amount of power.
with 600 sq in and 830 grams auw, the wing loading is similar to the Thermalis, and the glide is good for thermaling. the climb is spectacular at 1/2 throttle and specs in no time, so the 3x1400 pack lasts a long time. i fly it for about 1 hour (several flights) with that pack, even without thermals.


will talk about this at separate post:
Maverick 3: >>>may 2016:found a fiberglass fuselage that is very light and strong-and even more streamlined. saved even more weight. will provide details in a near future.<<<
Last edited by phil alvirez; Feb 14, 2017 at 07:12 AM.
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