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Old Aug 01, 2006, 10:31 AM
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Sig Four Star 40 ARF Engine recommendations and Building Tips

I just picked up a Sig Four Star 40 ARF. What engines does everyone recommend? Iím thinking of using a Thunder Tiger Pro .46 , Iíve had good luck with them in the past.

Also are there any tips I should follow when assembling the ARF?


Thanks,
Dave
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Old Aug 01, 2006, 10:42 AM
Speed Freak
Joined Jul 2006
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I'd use a bigger engine like a .60-.65 I don't personally do this(just started fling) but I have seen several people avoid crashes by using the power of the .60s to climb out of a bad situation.
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Old Aug 01, 2006, 12:33 PM
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Go with the TT Pro 46 - excellent engine! Other good choices are GMS 47, Magnum 46, Tower 46.

Follow the instructions that come with the ARF - they are great. If you need any particular advice at any step of the assembly, ask here in this thread. We'll be more than happy to answer.

Ivan
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Old Aug 01, 2006, 12:46 PM
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Quote:
Originally Posted by Daverp
I just picked up a Sig Four Star 40 ARF. What engines does everyone recommend? Iím thinking of using a Thunder Tiger Pro .46 , Iíve had good luck with them in the past.

Also are there any tips I should follow when assembling the ARF?


Thanks,
Dave
Hej, Dave !!! Hope you have not assembled the wing together yet. !!!!
Can you do me a favor and trace the wing foil for me ??

TIA

IR
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Old Aug 01, 2006, 04:39 PM
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@indoruwet

Sorry, It's already together.

Quote:
Originally Posted by indoruwet
Hej, Dave !!! Hope you have not assembled the wing together yet. !!!!
Can you do me a favor and trace the wing foil for me ??

TIA

IR
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Old Aug 01, 2006, 05:09 PM
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I would replace the tailwheel assembly with a Sullivan unit, specifically this one:
http://www2.towerhobbies.com/cgi-bin...?&I=LXFV47&P=7

I think your engine choice is perfect for this plane. I have an OS 50 SX on mine and it came out just slightly nose heavy, so I definitely wouldn't put a .60 on it.

Above all else, I would recommend adding some additional color to the plane to help with orientation. I have the red plane and on the bottom of the wing, I applied white monokote stripes on every other rib bay. Each stripe is as wide as the rib bay itself. This has helped with orientation while flying greatly. The plane isn't very large and even with a .46 or .50 engine, it will fly quite fast and and get away from you in a hurry, making orientation difficult, especially if your plane is solid red.

One thing I don't like about the plane is the weak wing tips. If you feel the need, add a rib made of lite-ply to the end rib for some additional strength and recover. And use some scuff tape also. It doesn't take much to damage the wing tips on this plane.

Have fun. It's a great flying plane.
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Old Aug 01, 2006, 05:28 PM
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Quote:
Originally Posted by CoastieTX
I have an OS 50 SX on mine and it came out just slightly nose heavy,
Do you happen to know what the weight of your engine is WITH the muffler ??

Specs say = 13.8 oz (but I think that is without a muffler)
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Old Aug 01, 2006, 05:35 PM
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17.1 oz give or take a tenth

Quote:
Originally Posted by indoruwet
Do you happen to know what the weight of your engine is WITH the muffler ??

Specs say = 13.8 oz (but I think that is without a muffler)
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Old Aug 08, 2006, 11:16 PM
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Finished my 4 * 40 ARF. Very nice plane to assemble.
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Old Aug 09, 2006, 12:25 AM
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Uhmm.... top and bottom of the plane all yellow ?

You need to give the bottom some definition different from the top !
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Old Aug 09, 2006, 12:37 AM
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You already got your plane done Dave?? Weren't you the one with the motor mount probelm? Or did you have the arf?
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Old Aug 09, 2006, 01:57 AM
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Quote:
Originally Posted by trab1925
You already got your plane done Dave?? Weren't you the one with the motor mount probelm? Or did you have the arf?
Hmmm.... yes he did have the ARf. Look at a few posts above where he says :

Finished my 4 * 40 ARF. Very nice plane to assemble.
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Old Aug 09, 2006, 06:16 AM
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heh...
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Old Aug 09, 2006, 09:44 AM
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The bottom of the wings have a large white star decal. Do you think that is enough or should I mimic those decals in red on the top of the wing?


Quote:
Originally Posted by indoruwet
Uhmm.... top and bottom of the plane all yellow ?

You need to give the bottom some definition different from the top !
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Old Aug 09, 2006, 09:49 AM
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No Dave, the big stars will disappear when the plane is in the air. Look at Jason's 4* - he put some nice touch of red covering on top and purple on the bottom. I'd add either purple or red on the bottom and leave the top yellow. In your case as you already have applied the decals on the bottop, I'd add the red/purple trim on top of the wing.

Ivan
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