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Old Jul 24, 2006, 09:50 AM
PB #2212
London, England
Joined Dec 2005
330 Posts
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, 11:33 AM
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Joined Jun 2004
2,231 Posts
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!
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Last edited by Malves; Jul 27, 2006 at 04:34 PM.
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Old Jul 25, 2006, 10:05 PM
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Joined Jun 2004
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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.
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Last edited by Malves; Jul 25, 2006 at 11:27 PM.
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Old Jul 26, 2006, 07:10 PM
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Joined Jun 2004
2,231 Posts
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.
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Last edited by Malves; Jul 27, 2006 at 02:45 PM.
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Old Jul 31, 2006, 01:47 PM
"How old are you?"
Brummeh's Avatar
Brum, U.K.
Joined Feb 2006
544 Posts
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
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Old Jul 31, 2006, 02:43 PM
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Sweet! You may wanna add a lil CF "post" right at the crossing of those CF struts.
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Old Aug 01, 2006, 01:55 AM
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Ireland, Kildare, Leixlip
Joined May 2002
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That's very nice.
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Old Aug 01, 2006, 04:52 AM
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London UK
Joined Dec 2005
394 Posts
YAK-tastic !
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Old Oct 03, 2006, 09:21 PM
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Joined Jun 2004
2,231 Posts
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!
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Last edited by Malves; Oct 03, 2006 at 09:58 PM.
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Old Oct 04, 2006, 12:00 AM
Off 2 The Edge of Reality
TeamTEOR's Avatar
Scottsdale, AZ
Joined Sep 2003
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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?
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Old Oct 04, 2006, 07:55 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.
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Old Oct 04, 2006, 08:10 AM
Off 2 The Edge of Reality
TeamTEOR's Avatar
Scottsdale, AZ
Joined Sep 2003
7,479 Posts
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
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Old Oct 04, 2006, 10:16 AM
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Yup, that setup should work fine. That's more than enough thrust for it.
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Old Oct 12, 2006, 02:07 AM
Mr. Mullins
Joined Jul 2006
66 Posts
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!
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Old Oct 12, 2006, 03:51 AM
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Port Fairy, Australia
Joined Jun 2005
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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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