Ok thanks, will try that. Was using a 2650 35C Nano

Originally Posted by nighthawk0077

Ok had 4 flights today with my HET F20.

Setup is CS10, L2855 2100kv on 6S high timing. I'm getting ~1400watts and 64amps. Motor is fine (although it was cold out today), but I'm not too impressed with this motor. Could be the ducting or exhaust tube, but I was expecting more speed out of it. Probably only got 105mph.

The 10blade fan doesn't like being choked down. Try opening it up to 95% FSA (61mm) and it will come alive. I tried mine with the stock exhaust on my Phase 3 EF-16, 55mm and the performance was terrible. 10oz less static thrust than the 61mm exhaust.

What's your exhaust diameter?

Come to think of it I never actually measured, its probably only 2-inches or so

This is what I was dealing with...lol

Scarry Bungee launch (1 min 2 sec)

That was my first launch off the ramp, was slightly nose heavy. Moved the battery back a few mm for the next ones and launched no problem..

Nighthawk , you don't want to launch with the wing's angle of attack sitting in a negative attitude. Youre lucky that thing didnt spike into the grass .Looks like you could use a few inches cut off the front of the ramp .It needs to sit not quite so steep .

Originally Posted by PAPE

Scunna, to me the best cs10 combination i have seen from your videos is the ff mirage 2000 with the cs10. By any chance do yo know the auw on that plane?

Its auw is 4 pound, decided to give it a paint job

Huh "ff Mirage"...? FlyFly?
The 90mm FlyFly Mirage?

Whatever that is, it looks really nice! Great job!

sure is !here it is flying with 70mm cs10 before paint job

Fly Fly mirage 70 mm changesun 10 blade fan Eflite bl-32 motor 6s 4500 45c nanotech (2 min 43 sec)

Flying this fan in a scratch build tomhe f-22 profile jet. The one that was designed for pusher. I just have a question on the whoosh sound from this fan. I have a straight 56mm thrust tube. Could I cut a hole towards the end of the tube or something to give it a better sound? As of now it is super quiet.

Originally Posted by scunna

sure is !here it is flying with 70mm cs10 before paint job


http://www.youtube.com/watch?v=iyqtD8vO2pY&feature=plcp

That fan sounds great in that airframe.

Originally Posted by nighthawk0077

This is what I was dealing with...lol

http://www.youtube.com/watch?v=kScExXlMqWE

That was my first launch off the ramp, was slightly nose heavy. Moved the battery back a few mm for the next ones and launched no problem..

If you'll wait till it gets some speed up to hammer the throttle, it wont torque to the left so bad.

Originally Posted by dpowellmeii

That fan sounds great in that airframe.

Yes it has a throaty roar but i like twins. They are harder to get a nice sound but i think i acheived it with my a-10. Next is twin lx raptor then my sebart mig29

LX A-10 Changesun 70mm fans Bl-32 motors 5S 8000ma 20-50 c lipo AUW 8.5 pounds (0 min 0 sec)

Originally Posted by dpowellmeii

If you'll wait till it gets some speed up to hammer the throttle, it wont torque to the left so bad.

Actually it came off the ramp cock-eyed. Our field is quite bumpy in spots which can cause the launch rails to be uneven in height.

You can hear the throttle come on after the plane was already in the left hand roll.

Originally Posted by scunna

sure is !here it is flying with 70mm cs10 before paint job


http://www.youtube.com/watch?v=iyqtD8vO2pY&feature=plcp

do you have to modify the ducting on the Mirage for that CS 10 blade 70mm fan?
photos of the ducting would be nice.

Thanks

No mods to ducting. fan is suspended where it is supposed to be. I think the awesome sound comes from the fact that the plane is designed to run 90mm fan so the 70mm fan has lots of free air( not starved)