roydefiant

roydefiant

Guldukat
wondering what kind of a transport cradle you might have fabricated for the fuselage?

GULDUKAT

I do not have one for this. I can carry the fuselage myself without help. I have cradles only for my SM SU30 , F14 XXL and 4M Leonardo.

roydefiant

Flaps
I found that a 1.25 inch servo arm in conjunction with a 4.5 cm pushrod works best

roydefiant

The fuel tank appears to be glued in place. There is a small brass outlet fitting with 4mm fuel line attached. This fitting appears to be glued in place as attempt to unscrew doesn’t seem to work. The tank is not very translucent and transilluminating the fuel tank I do not see a fuel pickup line or clunk.

anyone with experience with their XXL JMB PC-21

David Jackson

My Feedback: (15)

The main fuel tank is attached with double sided tape. I did remove the tank from my PC-21 and replaced the fuel tubing, clunk, etc, with larger diameter stuff.

roydefiant

Thanks David. That makes sense. I tried to pry it free but no joy. Guess I need to try a little harder.

roydefiant

David, was there a technique to get thru the double sided tape on the fuel tank you can share. I have tried a little bit of heat followed by trying to slide a straight edge razor blade or thin piece of brass with sharpened edges thru where I I think the tape is but must admit, not making much progress

roydefiant

I think I I’m having success now. Using goo gone to soak lower front area of tank. I don’t have it for yet but able to work a flat probe much further under the tank

roydefiant

Replaced wind Rc fitting with jet tech fitting

Stock internal plumbing. No safety wiring but very tight fittings that I don’t think would have come off. The brass tube really helps keep the clunk from flipping forward. The front tank fitting was glued in place and had to be dremeled out to fit the Jettech.

roydefiant

I have not pressurized the fuel tank yet to look for leaks but will before re-installation. The tank was held in place with double sided sticky tape. They should sell the formula to 3M because it was densely adhered to the bottom of the fuel tank. Was difficult get the double-sided tape off the tank. In order to get it out of the plane I had to soak bottom of fuse that held the tank with “glu gone” and then slide a thin flat piece of brass underneath to separate. I’m pretty sure that tank wouldn’t be moving around in flight. I did check the fuel tank capacity and is exactly 3 liters. I will be placing a 1/16 foam sheet with adhesive just on one side on the bottom of the tank to give it slight cushion before it goes back in the plane. Still thinking about how I will secure the tank.

roydefiant

So pressure testing revealed a pin hole leak on the right side of the tank where the top half meets the lower half of the tank. There was a small dimple where the leak was coming thru the glued seam. A little E20HP and issue resolved

roydefiant

Grumania pipes mounted with slotted screws. The latter require proper orientation for the safety wire so they cannot rotate loose

roydefiant

2 coats of BVM heat shield to turbine hatch

roydefiant

JMP airtrap waiting for installation

roydefiant

Batteries for the PC-21

roydefiant

Fuel system plumbing almost done. Kept all this on fuse bottom with pump mounted vertically on the right side. Keeping everything ahead of CG. Still need to mount vent in bottom of fuse

roydefiant

Dry fill valve mounted on right turbine rail. Also will mount ball valve for fuel line here

sportflya2

great job! recently put mine together with mods to make it the plane for more. i re enforced my fuel tank with cf along the seams. stock lights work. i have a upgraded light controller as well as upgraded gear controller. pm if you have questions.

roydefiant

Sportflya2, sent you a PM

roydefiant

Jetcat I/O board mounted on a platform with a magnet. Then mounted just inside the right side behind a former that is immediately aft of turboprop hatch. Because of magnet release, very easy to pull out if needed or can leave in place for start up

roydefiant

Electronic platform with receiver and ECU batteries forward. Jeti CB 320 with Demon Cortex Pro. Jetcat ECU and jetcat telemetry module. Will be installed on the reinforced platform mount in fuselage

sportflya2

Nice work. It should not interfere with the engine bay cover

Westwindpilot86

Very nice build Roy. I am getting mine in about a month hopefully. All depends on shipping

roydefiant

Thanks Westwind. I’ll think you’ll be pleased. The paint job on mine is really excellent. If not too late you may wish to ask wind Rc to wrap pilot seats in bubble wrap. They are glued into the bottom of the cockpit tub. When my kit arrived, both seats were floating around inside the tub and fuse is shipped on its side. As a consequence I have scratches on my rear canopy from the loose seat. I’m going to try and buff it out with Tamiya plastic model buffer. A few more pictures here. One is the vent tubing which bows up before going to vent mounted right behind nose wheel. The other picture shows tethered supports for the rear servo wires so no flopping around. Wires for lights are separate on fuse side. Plastic spiral wrap around some areas where cable ties are. The servo harnesses that came with my kit are plenty long. You could definitely put the power distribution box on the front of the plywood tray. I have all batteries up there to keep weight forward



Clear vent tubing