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Old Jul 24, 2006, 10:50 AM
3dflyindan is offline
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PB #2212
killi thanks for that mate i have flown 4 of them now and love them so much

Malves - email me a copy of the plans plz pal u have me address i want to make one but a tad bigger so that with my gear it wont be a brick lol

dan
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Old Jul 24, 2006, 12:33 PM
Malves is offline
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Ok, here you go v.3. 35 1/4" WS and 29" long. Modifications to this new version:
- longer fuse
- increased wing area
- increased rudder area
- slightly bigger ailerons

Enjoy!
Last edited by Malves; Jul 27, 2006 at 05:34 PM.
Old Jul 25, 2006, 11:05 PM
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Pics...

I'll try to check the weight tomorrow. It should be around 150-155g with a TP4803s, for a 3-3.1oz/sq.ft.
This plane should be perfect for aeromusicals.
Last edited by Malves; Jul 26, 2006 at 12:27 AM.
Old Jul 26, 2006, 08:10 PM
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Ok, I've put 2 flights on it today and it flies lighter than the previous version. I don't recommend putting those holes on the depron stiffeners. They are not as stiff as if the holes were not there, and that causes tail twisting. Maybe, if the holes aren't that much together and smaller it could be better, but I say leave it.

EDIT: I've replaced the depron strips last nite with no holes and took it outside at lunch time today. What a difference! I'll see if I can weigh it today.
Last edited by Malves; Jul 27, 2006 at 03:45 PM.
Old Jul 31, 2006, 02:47 PM
Brummeh is offline
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"How old are you?"
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A week on and my full fuse is all readt to go, it is 145 g without battery or lg...

27g micro cyclon, 2s400 20c pack, 3 x 5g servos, 10a esc, 5ch rx


Lets hope it flys :P
Old Jul 31, 2006, 03:43 PM
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Sweet! You may wanna add a lil CF "post" right at the crossing of those CF struts.
Old Aug 01, 2006, 02:55 AM
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That's very nice.
Old Aug 01, 2006, 05:52 AM
Mister UHU is offline
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YAK-tastic !
Old Oct 03, 2006, 10:21 PM
Malves is offline
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Well, here's version 4 of the Yak. This will most likely be the last update I'll do to it. I really like flying this plane and I can't wait for the indoor season. Actualy, I am building one right now for this next Sunday, when there will be an indoor meeting in a nearby city.

If you build it right and with light weight equipment, you can get this plane to 140-145g (we're talking about a 35 1/4" wing span). Mine with 7.7g servos weighs ~155g. It won't be only light, but also very strong and with very good stifness for a foamy. It's a great plane for freestyle.

Changes from v.1 thru v.4 were:

- bigger ailerons
- CF on the TE
- increased wing area
- increased rudder area
- increased fuse area
- longer fuselage (from 27" to 30")
- little modification to the fuselage design (v.4)

Have fun and enjoy!
Last edited by Malves; Oct 03, 2006 at 10:58 PM.
Old Oct 04, 2006, 01:00 AM
TeamTEOR is offline
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nice and simple my friend. Got to love a good set of plans. What are you thinking about for a power system for the new one you are building?
Old Oct 04, 2006, 08:55 AM
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Quote:
Originally Posted by TeamTEOR
nice and simple my friend. Got to love a good set of plans. What are you thinking about for a power system for the new one you are building?
Thank you. Same setup I've been using - Park 300, 8x3.8SF, TB-9, TP4802s. I am waiting for the Park 250, so I can replace the 300 and loose ~10g. I am also thinking about replacing the S3110 with D-47.

I am still building mine, and it should be ready in 2-3 days (don't have much time to put on it). I'll have pics then.
Old Oct 04, 2006, 09:10 AM
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Hmmmm.. Do think this will work? Could run it on a 2s700 pack with a 1047? I have one laying around doing nothing. I'll send out for a couple of 5gr servos or find a set of Picos laying around here.

2406-32 1150kv outrunner brushless direct drive motor
Size : Dia 28 mm x L 23 mm
Shaft Size : Dia 3 mm x L 9 mm
Screw Size : M3
Weight : 33 g
KV : 1150
IO : 0.8A (10V)
Efficiency : 70%
Propeller Li-po Battery Current Thrust

1047 2s 6.8 A 310 g

8 x 3.8 3s 6.4 A 363 g

8 x 6 3s 7.8 A 340 g
Old Oct 04, 2006, 11:16 AM
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Yup, that setup should work fine. That's more than enough thrust for it.
Old Oct 12, 2006, 03:07 AM
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Mr. Mullins
Hi there

I really like your YAK 54 and going to build it.
Just wondering how I print it out from PDF to right scale with tile?

Tips?

Tomas


Quote:
Originally Posted by Malves
Thanx, bro.

Here is the plan for the Yak-54. This should be final. I modified the wings a lil with more area and bigger ailerons. Adjusted the cut on the fuse where the stab/elev goes in. Adjusted the elevator for more rudder throw. Broke the x-section in more parts to put 2 CF spars on the wing.

I would start with the CG at around 2 3/4" from LE and go from there.

I'll be putting a new one together over the weekend so I can check the adjustments I've made to it.

Enjoy!
Old Oct 12, 2006, 04:51 AM
tim_mellor is offline
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Hi Tomas, Malves and all,

try this conversion to A4 tiled of version 4. I havn't printed it but it should be OK. Just make sure you print it at 100% and don't allow adobe to shrink it to 96% like it does to fit it on the page.

Tim


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