I have a Hobbico TwinStar with (2) .25 FX engines. Does anyone have a good method for a reliable upgrade to slightly larger capacity fuel tanks? ie. fuselage tank? Thanks! Rich

Hi Jerry here, I have a Twinstar also i have GMS 32s with the stock tanks. I fly about 7 minutes at full throttle and with different power setting i could get longer flights. i just limit myself to that time and i have flown it with one engine out and it flys fine just fly alot of rudder.

I also have one with a pair of SR 32's that is good for no more than 5 mins. The tank subject has been extensively covered here on RCU in the past and there is really no good easy fix in my mind! The plane flys well
But sure could use a little improvement such as covering material and the tank issue.

Thanks, guys. The tank thing is liveable, but the .25 FX engines could use another 2 oz. If this thing lives, I will come up with something LOL! I have the new ARF; it has the improved covering. Mine is holding up well. For what it is, it is a lot of fun. Rich

I've been meaning to post this for awhile, in fact I have found 6oz tanks that fit in the engine nacelles with no mods, I waited a few months from tower to get them but there the tanks that come with the Viper 500 ARF, tank part # GPMA2552. there always in limited supply, you have to build the plumbing and fit the clunk, then take it back out and slip the tank in the nacelle neck first and then without the engine or mount on put the filler neck and plumbing in the tank thru the firewall, pretty easy actually, bolt the engine in and off you go, I had FP 40's in mine and flew for quite awhile on 6oz's.

I put a 2oz tank behind the throt. servo. I had to cut out a section in the wing for the tank to fit in. I fuel proofed the area then got two cowels for the plane and cut them to fit over the tank and servo. With 6oz of fuel I get a solid 10 min. flight on a pair of OS 35ax engines.
C.L. Baker

Hey there,
Would a pair of os fs 26 (4 strokes) be adequate for the twinstar?......thanks

I think it would fly it. But probably on the wing. I'm trying to put a couple of OS.40fs in during my spare time. But got carried away and stripped the plane. Gonna put retracts in, and try glasair2 and clbakers methods for the fuel tanks since I'll have it opened up. Also want to put a bigger rudder on to help with engine outs, not that it needs it much though. A buddy put retracts on his and it looked really cool flying like that.
Edwin

Yes they will!
When both are running it flies quite decently with the 26's, although you are frequently reminded that you are on the very low end of the power band. I had a lot of fun with mine, and the fuel tank size was never an issue. one thing to consider, that if you lose one engine, one 26 will not keep it in level flight, and it will start downhill. If you try to hold it up, it will stall and spin. It is not difficult to fly on one engine, but altitude is definitely your friend.....

I have the Twinstar with a pair of OS 26fs engines, and they have no trouble flying it.

What props are you running with the 26's? I'm running Master Airscrew 10x6 Scimitar Profiles, and they are turning just under 10,000 on the bench.

yes a pair of OS FS-26 Surpass engines work just fine in a Twinstar.
I am presently running 9x7 props on it, but I think the 10x6 would be better, especially fro grass fields.
here is my example.

can't remember..I sold it a couple of years ago.....

Hey guys
Thanks for the info....think I'll go with the twinstar and my os fs 26's........I originally wanted to put them in a DeHavilland Mosquito Twin from nitroplanes....think I'd end up with problems...lol....