Hi Friends,

I´m in the process of building a Showtime 4D .90 and I want to know the best setup of servos for this plane and servo arms, I´m will be using Hitec or Jr servos. I want to know the best size of SWB servo arms for elevator and ailerons. I´m thinking using a YS 110.

Thanks
Gaiotto

you can use those black arms that come with the hitec for the showtime i am running jr8101 nylon gear 90 oz on all surfaces of mine.

I use same servo set up, Hi-teck with metal arm on rudder 180oz, and JR (82oz) with plastic arms on other controls, make sure you run the system on 6V, servos work much better in large plane. I have about 10 flights on my showtime, flies well, I have Saito 100 on 30% nitro, I wish I had another 15% power, but for now OK. Watch the landing gear in the Showtime, espically if you fly from grass field. The plane is built light, NOT strong, and built for a pro flying it off a paved runway. Just one or two modest landings, and you'll pull the strut right off. guaranteed. Beef up the strut mount in the fuse, maybe add in light figerglass. The Carbon fibre struts will delaminate at the bends as well, nut thin CA will help that out.

Overall fun plane to fly, built light not strong....the gear and struts are the weak points.

Great flying plane, rolls faster than you can count and very good knife edge. Mine is powered by an OS 1.20 Surpass III 4 stroke. anybody had any aileron flutter? I am using Futaba 3010's on th ailerons at 6 volts with the HD 1" Hitec servo arms. The plane has picked up an aileron flutter after maybe 50 flights. Never a rough landing and only fly full throttle going up. Belwo half throttle everything is ok.

Regards,

3Dflight

Hi Guys,

What do you thinking of using the JR 8231 servos and what metal arm should you recomend? Do you think the Evo 100 is a good engine for this plane?

Thanks
Gaiotto

I have a Showtime and I used Futaba 3010's for a while, but mine were extremely sloppy. That caused my ailerons (and everything else) to flutter. I have switched to Hitec 645 MG's and it is now much better. The best servos to use would be digitals. Does anyone know of any cheap digitals over 90 oz./in.?

Gaiotto, the Evo. 100 is a decent engine for this airplane. I used it foe a while before I switched to gasoline. Any metal arm around 1.5 inches would be good.

I use Hitec 5645's....digital version of the 645 without spending a lot of money. They will give you 130 oz on 6 volts.
They come with 1" blue aluminum arms and 1-1/2" HD black plastic arms.

Thanks!

i have hitec 5625's all around except a 5945 on rudder and a standard one for throttle

airwild 1 1/2 inch aluminum arms with the holes threaded for 4-40 ball links already so zero slop. 20$ an arm but theyre worth it