I put TGS 12x12 prop on my sundowner yesterday and result was 133mph which is 8 miles slower than apc 12x12. I wish somebody makes 12x12 carbon fiber prop

Hi All;
This thread is awesome! I have a SD50 (#1) but the landing in the tree didn't work out so well I've fixed much worse and thankfully it's not terrible but I need to rebuild the first three bulkheads. Does anyone have plans where I could get a scan of those 3 pieces? Just hoping to save some time.

The SD50 (#2) has only landed on pavement so far, thank fully

I feel like an outsider on this thread since I'm running a Jett .60

You are in good company ohnow! Glad you found the thread

I wish I has some insight into where you might find the plans, you might have to contact Horizon or Hangar 9 directly to find that information...

Where are you flying these days? I fly my SD at Stone Mountain every so often, but also fly at Dunwoody Flying Club and the Pecan Patch. Lets get together sometime and burn some laps

Originally Posted by ohnow

I feel like an outsider on this thread since I'm running a Jett .60

Nah, I'm with you on the glow power. Couldnt manage funds for the Jett so I went with an OS 50 hyper, gets the job done, just not near as fast as I would like.

Originally Posted by ACKopter

Nah, I'm with you on the glow power. Couldnt manage funds for the Jett so I went with an OS 50 hyper, gets the job done, just not near as fast as I would like.

Yeah I splurged on this plane. It was a tough choice to go glow or electric but that tuned pipe is hard to beat and I really wanted longer than a few minutes. I ended up squeezing a 24 oz tank in it! I bet it would fly even longer if I could stay out of the trees

Originally Posted by umitv

I put TGS 12x12 prop on my sundowner yesterday and result was 133mph which is 8 miles slower than apc 12x12. I wish somebody makes 12x12 carbon fiber prop

I noticed that to the apc 12x12 prop is faster and more pull then the TGS 12x12 prop. The apc sounds nice to

Hello fellas,
I don't have a SD but I have WM Nemesis that I am converting to electric. I will be using a Hyperion 4035-500kv which is good for WOT 130A @ about 4500watts. I plan of using a 12 or 13 size prop possibly on 10s. Have any of you used this esc. http://www.hobbyking.com/hobbyking/s...hless_ESC.html

I have used there non hv version on 6s and worked out perfect.

Thanks
Mike

That's the same as Hobbywing, which I've had great luck with.

Hey guys i am running 10s with the castle series cable 2 to 1 my question is can i leav the one plug plugged I'n to the esc and then attach the 2 lipos??? The reason why is my esc cable is short and it's hard to get to thx

Yes, you can leave it plugged in.

got it

Hi. Great thread! I'm hoping u guys might be able to help me out. Here's the story ...i bought an sd 50 about a year ago and ive tryed every thing and still no speed. I'm missing something some where. looks to be in the 80 to 90 mph range, definitly not 100mph. Any ideas would be greatly appreciated. Thanks! The motor, props and spinner have been balanced there is no vibration at all. the current setup is


Motor eflight power 52 590kv
phenix ice 100 amp esc
battery 6cell Skylipo 40c
12x12 apc e prop
flying wieght 7 lbs

not sure how to post data log on here so here,s the readings

battery 25.0 avg 23.9
amps 89.9
watts 2009
rpm 11090

I'm sure others will chime in, but just for kicks I ran your setup thru the castle creations flight calculator. On a fully charged batt, it predicted 71A, 10975 rpm, 1538W, and 125mph pitch speed. Seems like the rpm is spot on, but your current and power numbers are a lot higher than theirs. Wonder where the difference comes from...?
Seems like you ought to be hitting the high 90's low 100's with that prop and rpm, unless it's stalling when you test it on the ground, and slowing down a bit when it gets up to speed and 'bites' (am I thinking about that correctly?).
J

Thanks for the calc. data logging was done in flight and those are the peak numbers. at the end of the pass amps dropped to 79 and watts drop to 1879 and rpm peaks at the end of the pass at 11090. I,ve tried a ton of prop configs and have noticed any prop smaller than a 12" is way slower. I'm starting to wonder if its an air frame issue, aero ptoblem or somthing out of line. just not sure where to start. the plane just looks like it,s struggling to get thru the air but it flies like a dream

Originally Posted by twarmbier

Hi. Great thread! I'm hoping u guys might be able to help me out. Here's the story ...i bought an sd 50 about a year ago and ive tryed every thing and still no speed. I'm missing something some where. looks to be in the 80 to 90 mph range, definitly not 100mph. Any ideas would be greatly appreciated. Thanks! The motor, props and spinner have been balanced there is no vibration at all. the current setup is


Motor eflight power 52 590kv
phenix ice 100 amp esc
battery 6cell Skylipo 40c
12x12 apc e prop
flying wieght 7 lbs

not sure how to post data log on here so here,s the readings

battery 25.0 avg 23.9
amps 89.9
watts 2009
rpm 11090

if you want over 100 mph you should try 8s if your motor handle it. you are definitely on right prop