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Foamie jet for X45/K45 ?

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Foamie jet for X45/K45 ?

Old 12-26-2019, 09:20 AM
  #26  
sidgates
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Gary - Can you supply a link to the filter conversion on RCG, I couldn't find it.
Sid
Old 12-26-2019, 10:34 AM
  #27  
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Originally Posted by Viper1GJ View Post
First flights were awesome. It is blast to fly. A real gas and go jet and so far very little maintenance. I love the size. I can pick it up move it around with out another person helping.

My normal take off technique now is to reduce thrust to half stick right after lift off. This makes a normal climb out and gear/flap retraction easy. However it will go straight up from the ground at takeoff with out any problem. I highly recommend this micro turbine conversion for lots of fun with little hassle. Just respect the airframe limits. No foam explosions needed!
So it sounds like the 45 has more than enough power, If i have the Kingtech 30 available do you think it would work ok also?
Old 12-26-2019, 05:56 PM
  #28  
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Originally Posted by sidgates View Post
Gary - Can you supply a link to the filter conversion on RCG, I couldn't find it.
Sid
Sid, here is the link where I got the idea. It was Hobbysquawk not RCG. Sorry.

https://www.hobbysquawk.com/forum/rc...versions/page3 See Post #44

Last edited by Viper1GJ; 12-26-2019 at 06:03 PM.
Old 12-26-2019, 06:01 PM
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Originally Posted by Reever45 View Post
So it sounds like the 45 has more than enough power, If i have the Kingtech 30 available do you think it would work ok also?
Yes, I think the K-30 would work very well. There are several videos on YouTube that show K-30 flying great. Go for it! It's really fun. I think Tony Hung's is a K-30 and his photos and video inspired me to try it. He has several videos on YT and some photos on FB that I copied.

Gary
Old 12-26-2019, 06:08 PM
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Originally Posted by Reever45 View Post
So it sounds like the 45 has more than enough power, If i have the Kingtech 30 available do you think it would work ok also?
Yes, I think the K-30 would work very well. There are several videos on YouTube that show K-30 flying great. Go for it! It's really fun. I think Tony Hung's is a K-30 and his photos and video inspired me to try it. He has several videos on YT and some photos on FB that I copied.

Gary
Old 12-27-2019, 10:20 AM
  #31  
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Originally Posted by Viper1GJ View Post
Yes, I think the K-30 would work very well. There are several videos on YouTube that show K-30 flying great. Go for it! It's really fun. I think Tony Hung's is a K-30 and his photos and video inspired me to try it. He has several videos on YT and some photos on FB that I copied.

Gary
Thanks for your input, have you installed the JP brakes yet? I have a set just like your's picture and i believe mine are 60mm. Was just curious how they fit as it seemed the F22 wheels/axles moved when all the way retracted?

Thanks
Jack
Old 12-27-2019, 06:23 PM
  #32  
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Originally Posted by Reever45 View Post
Thanks for your input, have you installed the JP brakes yet? I have a set just like your's picture and i believe mine are 60mm. Was just curious how they fit as it seemed the F22 wheels/axles moved when all the way retracted?
Thanks
Jack
Yes the trunnions the axles are in rotate but I donít think it would actually affect how the wheel axle would fit. I think it would be a simple remove and replace. Hardest part would be routing the wires.

I am actually considering putting just one brake wheel on the nose gear. Less overall weight and just as effective for taxi stopping. Easier to run wires from there. Also I could remove the nose weight I still have.

Gary
Old 12-27-2019, 06:36 PM
  #33  
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Originally Posted by Viper1GJ View Post
Yes the trunnions the axles are in rotate but I donít think it would actually affect how the wheel axle would fit. I think it would be a simple remove and replace. Hardest part would be routing the wires.

I am actually considering putting just one brake wheel on the nose gear. Less overall weight and just as effective for taxi stopping. Easier to run wires from there. Also I could remove the nose weight I still have.

Gary
I think a single brake would still be AMA legal ...
Old 12-29-2019, 05:02 PM
  #34  
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Originally Posted by Viper1GJ View Post
Two 500ml tanks from Amazon
Do you happen to have a link for the tanks?


Old 12-29-2019, 07:16 PM
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Originally Posted by Reever45 View Post
Do you happen to have a link for the tanks?

Here is the link I used:
https://www.amazon.com/Gasoline-Acce...5MT?th=1&psc=1
Old 12-30-2019, 11:08 AM
  #36  
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Originally Posted by Viper1GJ View Post

Thanks!

Tanks and F22 ordered
Old 12-30-2019, 03:13 PM
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Originally Posted by Reever45 View Post
Thanks!
Tanks and F22 ordered
Great! Post pics of your progress.
Gary

Last edited by Viper1GJ; 12-30-2019 at 03:24 PM.
Old 02-19-2020, 06:52 PM
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Freewing 90mm F-4 EDF Turbine Conversion

Many people have ask me to post photos of my F-4 turbine conversion using a K-45G3.
Here we go. Not all in the exact order but you can get the idea.

All credit here goes to Paul Appelbaum and his conversion design and his custom fuel tank. I followed his lead except for the tail mounted turbine. I used the same turbine mounting in the tail as I did on my first F-22 conversion.


First step was to get exact weight and CG from the EDF that I flew for several months with a HRB 6S 6000 mah battery. My CG was at 203mm from the LE with about 2.5 oz lead on the tail. The book CG was 190 which I found to be very nose heavy. The EDF weight was 8.55 lbs.


The next step was how to fit this stuff in the F-4 foamy. Answer...follow Paul's example.

Last edited by Viper1GJ; 02-19-2020 at 08:07 PM.
Old 02-19-2020, 06:56 PM
  #39  
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Foam cutting tools






























Old 02-19-2020, 06:59 PM
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Old 02-19-2020, 07:07 PM
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JP Hobby brakes with 65mm wheels












Airspeed sensor inside nose cone
Old 02-19-2020, 07:14 PM
  #42  
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Underwater tank test


Checking CG for turbine tail mount or mid mount with pipe. I elected to go with tail mount as the prediction only needed about 2.5 oz in the nose and saved me lots of money for a pipe.


Foam drill made from 1/4" brass tube sharpened on one end
















G10 used under bolt head to keep from crushing the foam.










Last edited by Viper1GJ; 02-19-2020 at 08:09 PM.
Old 02-19-2020, 07:21 PM
  #43  
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Servo connector installed on brake wires to allow wing removal
















Old 02-19-2020, 07:26 PM
  #44  
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Carbon tube used to eyeball thrust line in alignment with EDF thrust tubes


Carbon tube is near parallel to panel line on side of fuse










Foam cutting knife from Amazon


Cutting slots for engine mount braces
Old 02-19-2020, 07:34 PM
  #45  
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FOD cover made from .010 G10 material










BVM heat blanket felt material glued to foam above turbine and aft of exhaust on bottom of tail




Heat blanket covered with aluminum HVAC tape








Ink removed from HVAC tape with acetone


Tape painted with silver acrylic craft paint I stole from wife's craft room.



Old 02-19-2020, 07:46 PM
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Final weight and balance being supervised by Pixie!


Stovepipe from hardware store to protect tail during turbine starting






Weight and balance with take off fuel and landing fuel and fuel system tests using pump test in ECU


Turbine run tests


Ready to fly!
Old 02-19-2020, 07:51 PM
  #47  
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After several flights no heat issues under tail at all. Nothing done to stabs.


New MAP 2 oz air trap












Tank marked in 200 ml increments to calibrate the CTU for fuel telemetry








Turbine filter installed vertical to avoid trapped air


Start pipe in use

Last edited by Viper1GJ; 02-20-2020 at 06:19 AM.
Old 02-19-2020, 08:04 PM
  #48  
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Final weight was 8.55 lbs empty with 2.5 oz of lead on battery box. Take off weight is 10.9 lbs. Landing weight with 30% fuel remaining is 9.15 lbs. Landing weight CG is 86mm from main landing gear on the Xicoy CG machine which is 202 mm from the LE. The FW book CG is 190mm so I am 12 mm aft of the book setting and it lands very nice. Take of CG is 199 mm from LE. Rotation is nice and it does not jump off the ground. Control throws are standard. I have about 10% rudder to aileron mix with flaps down to assist with adverse yaw. I get 6-7 minutes flight time and land with about 30% fuel remaining. Overall it flies very nice. I keep the speed below 100mph similar to my max EDF speed and have had no problems. It will go much faster but I want to avoid a foam explosion.
Good luck. It makes foamy jets much more exciting.
Enjoy,
Gary
Old 02-20-2020, 03:38 AM
  #49  
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Nice work Gary! That looks to be a lot of fun.
Old 02-20-2020, 06:45 PM
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I cut the hole in the bottom of mine for the tank tonight!

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