Thread Tools
Aug 01, 2006, 10:31 AM
Registered User
Daverp's Avatar
Discussion

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
Sign up now
to remove ads between posts
Aug 01, 2006, 10:42 AM
Speed Freak
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.
Aug 01, 2006, 12:33 PM
S.A.D. member
ivanc's Avatar
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
Aug 01, 2006, 12:46 PM
Registered User
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
Aug 01, 2006, 04:39 PM
Registered User
Daverp's Avatar
@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
Aug 01, 2006, 05:09 PM
Registered User
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.
Aug 01, 2006, 05:28 PM
Registered User
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)
Aug 01, 2006, 05:35 PM
Registered User
Daverp's Avatar
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)
Aug 08, 2006, 11:16 PM
Registered User
Daverp's Avatar
Finished my 4 * 40 ARF. Very nice plane to assemble.
Aug 09, 2006, 12:25 AM
Registered User
Uhmm.... top and bottom of the plane all yellow ?

You need to give the bottom some definition different from the top !
Aug 09, 2006, 12:37 AM
Suspended Account
trab1925's Avatar
You already got your plane done Dave?? Weren't you the one with the motor mount probelm? Or did you have the arf?
Aug 09, 2006, 01:57 AM
Registered User
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.
Aug 09, 2006, 06:16 AM
Suspended Account
trab1925's Avatar
heh...
Aug 09, 2006, 09:44 AM
Registered User
Daverp's Avatar
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 !
Aug 09, 2006, 09:49 AM
S.A.D. member
ivanc's Avatar
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


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Sig Four Star .40 (non-ARF) with no manual..... slider69 The Builders Workshop 9 Jan 31, 2014 07:04 PM
Question Sig Four Star 40 ARF Hatch/Battery Location Question UnPossible Glow to Electric Conversions 6 Apr 05, 2007 04:46 PM
Question Sig Four Star 40 ARF Hatch/Battery Location Question UnPossible The Builders Workshop 0 Feb 21, 2007 07:08 PM
FS: Sig Four Star 40 ARF (RTF) Primodus Aircraft - Fuel - Airplanes (FS/W) 2 Feb 01, 2005 09:04 AM
Sig Four Star 40 ARF conversion YarSmythe Sport Planes 48 Jun 06, 2004 02:11 AM