Jason Adamo

My Feedback: (2)

Has anybody used a .91FX with a jett JS-90 on this plane? Would it fit like is does with the SJ-60LX?

russm

what is a js 90? i have the jett 90lx on mine. it has worked out well.

Jason Adamo

My Feedback: (2)

The JS-90 is the tuned pipe and the 90LX is the engine.

russm

not sure how the tuned pipe will fit. i have the jett turbo muffler on mine.

patzane

it been a long min since I last been on here

Anasazi

Is the CG from the manual a safe one to start with? I'll be putting an 55AX to SD and would like to know the correct balance point. Also I'll start with 12x6 just to get a grip of the plane, than I'll change into 11x7 and finally 10x8.

spaul813

My Feedback: (44)

I kept my CG just as the manual said.I am running the OS 55 with a jet stream muffler through the firewall. The CG worked well for me. I had one deadstick landing and she glides as good as can be expected considering wing area. I will tell you though that she comes in hot and likes to be landed with a little bit of throttle. Don't try to glide her down.

Anasazi

Thanks. While flying with 70 Surpass II I had this feeling the CG was way to front, because every time I put the throttle to idle the nose would immediately point down and the landings were really difficult. However she can be slowed down quite a lot for landings. I just need more practice.

chuck993

I have a sundowner 50 but I haven't built it yet, how long does it take to put together, realistically, not the marketing bs.

chuck993

no one knows how long it took to build this plane but there are 24 pages of posts on this plane?

jdkxtreme

Cut us some slack dude....This is a dead thread and not everyone checks there mail all the time..Depending on what engine you put in it will change the time alot. I put an os 55 with pitts muffler in mine..Took me 6 hours from start to finish. I have not flown it yet

chuck993

thxs but check the dates the thread is not dead

russm

about 5-6 hours is correct. it is what is called a quick build. not a dead thread, but not much intrest either

chuck993

Danke Russm, I still have one in a box and I have a subscription to this thread and see entries here off and on pretty steady, so I wanted to get some feedback.

Anasazi

With 12x6, 55AX, and elevator servo in the tail, mine flies great. I'll try to speed it up with 11x8

sevans16

I built one with an AX 75 and slimline pitts, completely in the cowl. I have pics in another thread in the ARF section- I think.
I am looking at building another one with a Jett 60xl, I wonder if the Jett 76 would work the same way?? a clean install.
I am also looking at the new OS 95AX that just came out.

spaul813

My Feedback: (44)

I am going to sale mine. If anyone is interested in the airframe only, give me a shout and we can talk. I like the plane (a lot) but like mostly giant scale planes. I have flown mine 3 times.

markskrusher

Hello, what do you think of stepping the motor up to a power 60 with an 80amp esc and 2 3200mah 3s in a series with a 14-8 prop ? what kind of speed do you think you would get out of that setup ? Or do you think this setup would be to heavy? thanks

BIGBADBOB65

I had an eflite power 60, APC 12X14E,CC-HV85,EVO 6cell 4900 mah li-pobattery. It did 82MPH.
I put a Hacker Electric Turbine Series A50-12L outrunner with, APC 12X12E, CC-HV85 esc,2 TP 3 cellpro-power 5000MAH in series, on my SD 50 it clocked 118MPH, but let it get to slow on landing and tip stalled it-heavier setup.(around 7.2 pounds).
Hope this helps

BIGBADBOB65

Sorry,that battery was 2, ThunderPower (PROPOWER-30C) 5000mah 3-cell packs in series.

Bi11ybuck

I was at the field today and was trying different props on my Sundowner with 55AX (Jett Stream Muffler).
I got to a 11x6 APC and liked what I heard and saw. Tacked on ground at 14,000 and transition was very smooth.
I was unable to test fly this prop size, due to high wind conditions, but I hope to soon and will post radar readings as soon as I do.

Has anyone tried this same setup with 11x6 APC, and if so, were your results similar on RPM?

Hangar 9 Sundowner 50



Hangar 9 F-22 Raptor

bob27s

My Feedback: (19)

Numbers are right ...... sounds like you are good to go.

Be sure to launch about 500-700 rpm off of peak rpm - when it unloads in flight, it needs the extra fuel.

jeffk464

gyro, cheater.

vertical grimmace

My Feedback: (1)

So I picked one of these up yesterday. I have a Rossi .67 that generally loves an 11-8. I was thinking of trying a 10-9 or 10-10, but if this does not work I think the 11-8 should be fine. The plane looks very good. I am going to wait until THanksgiving to put it together. Should be fun.

vertical grimmace

My Feedback: (1)

I almost have mine ready to fly now. I have a Rossi .67 long stroke engine installed and will be trying 10-9, 10-10 props. I want to get the RPM up around 18,000. The power band is in this range according to Rossi. This engine was very strong on my Kaos. Unlimited vertical really, so I am really looking forward to seeing what it will do on a smaller cleaner airframe.
All that is left now is to install the RX and cut and fit the cowl (the hardest part). I will have to butcher the cowl somewhat because my muffler is so big.
I am honestly thinking I can hit around 130 with this setup, but I really do not care to know exactly. I am sure it will be plenty fast enough.
I wonder if anyone else has installed a Rossi in one of these?
Also, what is the balance point? The instructions look wrong at 2.5" or something. It seems like it should be more around 3" or so.