I just picked up a old Kyosho f-86. I know it had lots of problems but i am one that likes a challenge. Any way i have an engine that will spin the fan easily, my question is how did all you old guys measure the rpm of the engine/fan setup. I was thinking of painting one blade white but not sure if will get and accurate reading.

Also does anyone know the rpm limit of the fan in that kit. i will be installing a OS TZ turbo engine that will really spin it up.

Hi airraptor

I painted just the spinner cone on my Dynamax fan unit and stuck a tach in the intake opening. It works great. I eventually put a sensor on the plane itself and had a cable plug into my tach.

JetCrazyCanada

PS. Not all DF pilots are old. I'm 24, but have flown them for the past 6 years. LOL.

I had one of those and it is hanging up in a garage now. I loved this plane , it helped me to get ready for my bigger planes.

I had 219 flights on mine before the pull chord broke and then I moved on to my BVM Bandit.

This plane to fly well, needs a big hole cut in the bottom of the wing just in front of the fan unit , this is a must because all of the other holes still will not let enough smooth air to reach the blades.

I had a .18 engine running on 40% nitro, this setup I topped out a 62 milles per hour. I also install a plastic thrust tube to help guide the air out the back of the plane. I install light weight wheels and spead them apart to lower the back end to help with the takeoff. On takeoff, go for air speed first not altitude before you make a turn, after she gets going then let her rip.

Good luck

William


[email protected]

t33 what 18 did you run on it? will the fan handle 30,000 plus rpm? what was the stock motors rpm on the fan? i am thinking of putting retracks in it and doing a intake to the fan and exit aswell. not really looking for speed at all but the cool ness of a small DF

I flew mine completly stock...with the included exhaust tube suplament.


Here is a video of my very first flight many years ago
http://www.youtube.com/watch?v=h-YPvKc8R2o

I have done 12 of these F-86s with both glow ducting kits and stream lined fuel tanks behind the motor, and electric. For glow I used the Trinity Picco (TP125, P15) and the Fantom FR .18 (Fan0124), I cut down the aluminum heads and added a head cowling.
I'm not sure what they have now in that size motor. I will look for some photos and post later.

Morris
Ductedfans.com

I am going to run an OS.18 tz rear exhaust with pull start. I will have my engine guy work on it some to get some more out of it. i thinking about doing a intake duct for it too.
Also is there any starting wands still available that i can use for this. i would really like to get rid of the pull start. i am doing everything i can on the engine too. like cutting down needle valve and carb going to make a fiberglass cowl to go around carb and base of engine. going to run a plastic thrust tube and work on sizing to get most out of it.

Ok i ran the fan today with the OS 18. stock header that came with kit no pipe got 24,400 rpm, added pipe (stock) got 25,500-25,600.
then open exhaust no header or pipe and got 26,117 rpm. So it looks like the stock header is really holding it back as we thought. i will clean the header up tonight to see if can get more out of it. i will also order a regular header for LA 15s and try some car ones. i think with some work should get 26,500-27,000 out of it. If still need more then can always jump up to a stronger 18.